Abstract

This three-dimensional additive manufacturing system that performs additive manufacturing using electron beams comprises: a first irradiation device that irradiates a shaping surface with a substantially vertical high-energy electron beam for shaping; a second irradiation device that irradiates the shaping surface with a non-vertical low-energy electron beam for observation; and an imaging device that receives the reflected electron beam, which has been emitted from the second irradiation device to the shaping surface and reflected on the shaping surface, and forms an image. Thus, the state of a melt pool can be observed with high accuracy.

IPC Classes  ?

• B22F 12/90 - Means for process control, e.g. cameras or sensors
• B22F 10/28 - Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
• B22F 10/85 - Data acquisition or data processing for controlling or regulating additive manufacturing processes
• B29C 64/386 - Data acquisition or data processing for additive manufacturing
• B33Y 50/00 - Data acquisition or data processing for additive manufacturing

Abstract

This three-dimensional layering-forming device performs layering-forming by using an electron beam in order to achieve both forming and observation while protecting an electron gun. The three-dimensional layering-forming device comprises: a first deflection unit that changes an irradiation direction of an electron beam for melting; a second deflection unit that changes the irradiation direction of the electron beam, which has passed through the first deflection unit, to a vertical direction; a third deflection unit that changes the irradiation direction of the electron beam that has passed through the second deflection unit; a fourth deflection unit that changes the irradiation direction of the electron beam, which has passed through the third deflection unit, to a vertical direction to irradiate a formed object; a shielding plate that is installed between the second deflection unit and the third deflection unit and that comprises at least two differently sized apertures for passage of the electron beam; and a control unit that, in order to guide the electron beam to the differently sized apertures of the shielding plate, controls the direction of deflection by the first to fourth deflection units.

IPC Classes  ?

• B22F 12/90 - Means for process control, e.g. cameras or sensors

Abstract

Provided is a three-dimensional additive manufacturing device that makes it possible to easily ascertain the melt state of an entire fabricated surface. Specifically provided is a three-dimensional additive manufacturing device that uses a manufacturing beam to perform additive manufacturing in a vacuum, said device comprising: a thermoelectron detection unit that detects the amount of thermoelectrons emitted from a fabricated surface irradiated with the manufacturing beam; a storage unit that stores the positions at which the fabricated surface is irradiated with the manufacturing beam in association with the amounts of thermoelectrons detected by the thermoelectron detection unit at the times of irradiation with the manufacturing beam, and a display control unit for displaying a thermoelectron distribution image obtained by superimposing an image expressing the amounts of thermoelectrons, said image being stored at the storage unit, on an image of the fabricated surface.

IPC Classes  ?

• B22F 12/90 - Means for process control, e.g. cameras or sensors
• B22F 10/20 - Direct sintering or melting
• B22F 10/30 - Process control
• B22F 10/368 - Temperature or temperature gradient, e.g. temperature of the melt pool
• B29C 64/393 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
• B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes

Abstract

The present invention makes it possible to generate a process map with reduced time and cost for evaluating molding conditions, therefore enabling efficient additive manufacturing. This process map generation method comprises: a classification model generation step for generating a classification model for inputting pass/fail for the quality of molded articles as well as at least two surface texture parameters highly correlated to pass/fail for the quality of the molded articles, and classifying pass/fail for the quality of the molded articles on the basis of the at least two surface texture parameters; a regression model generation step for generating at least two regression models for taking molding conditions of the molded articles as input data, taking each of the at least two surface texture parameters as training data, and estimating each of the at least two surface texture parameters from the molding conditions; and a process map generation step for using the at least two regression models and the classification model to map pass/fail for the quality of the molded articles in accordance with the molding conditions, to generate a first process map for evaluating the molding conditions.

IPC Classes  ?

• B22F 10/85 - Data acquisition or data processing for controlling or regulating additive manufacturing processes

Abstract

An information processing apparatus for controlling additive manufacturing of a powder bed method includes an acquirer that acquires roughness data indicating a roughness of a manufacturing surface after melting, and defect determiner that divides the manufacturing surface into small regions each having a predetermined size, and compares the roughness data with a predetermined threshold for each small region, thereby determining whether a defect exists in the small region. If an unmolten region is included in the small region, the defect determiner replaces data of the manufacturing surface in the unmolten region using data of the manufacturing surface in the small region, and determines whether a defect exists in the small region including the unmolten region. Also, the manufacturing defect detection method further includes a defect repair instructor that instructs remelting of a region that is determined by the defect determiner to have a defect.

IPC Classes  ?

• G05B 19/4099 - Surface or curve machining, making 3D objects, e.g. desktop manufacturing
• B22F 10/85 - Data acquisition or data processing for controlling or regulating additive manufacturing processes
• B29C 64/393 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
• B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
• G06T 7/00 - Image analysis
• G06T 7/11 - Region-based segmentation

Abstract

An additive manufacturing development method includes predicting a defect that occurs in a product based on a combination of a plurality of design data and a plurality of manufacturing conditions, collecting defect detection data for defect detection by monitoring the product during manufacturing in accordance with the combination of the plurality of design data and the plurality of manufacturing conditions, and generating a process map in which the plurality of manufacturing conditions are plotted using the predicted defect and the collected defect detection data. The method further includes collecting defect repair data for defect repair by monitoring the product during manufacturing and repairing a defect detected from the product, and storing the defect and the defect repair data in association with each other using the defect repair data and a repair result.

IPC Classes  ?

• B22F 10/80 - Data acquisition or data processing
• G06T 7/00 - Image analysis

Abstract

A laser beam and an electron beam can be combined to carry out additive manufacturing effectively. An additive manufacturing method according to the present invention uses an electron beam and a laser beam for additive manufacturing, the method comprising: a step for irradiating in advance, with the laser beam, an additive manufacturing powder material located at a position to be scanned by the electron beam in order to place the additive manufacturing powder material in a conductive state by bonding the powders to each other through an oxide coating layer on the powder surface while leaving the additive manufacturing powder material in a solid phase without neck formation or the occurrence of a liquid phase; and a step for scanning, with the electron beam, the additive manufacturing powder material in a conductive state, and melting the same in order to manufacture an additive manufactured article.

IPC Classes  ?

• B22F 12/45 - Two or more
• B22F 10/28 - Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
• B22F 10/34 - Process control of powder characteristics, e.g. density, oxidation or flowability
• B22F 10/362 - Process control of energy beam parameters for preheating
• B22F 10/85 - Data acquisition or data processing for controlling or regulating additive manufacturing processes
• B33Y 10/00 - Processes of additive manufacturing
• B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
• B33Y 40/10 - Pre-treatment

Abstract

This invention is directed to a method of efficiently improving a relative density of a shaped object using an evaluation criterion having a higher correlation with a density of an object to be shaped. The method according to this invention includes acquiring three-dimensional point group data of a surface of a shaping object, calculating at least one of three-dimensional surface texture parameters extended to a plane region using the three-dimensional point group data, and evaluating a quality of the object to be shaped using the at least one of the three-dimensional surface texture parameters.

IPC Classes  ?

• B22F 12/90 - Means for process control, e.g. cameras or sensors
• B22F 10/28 - Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
• B22F 10/38 - Process control to achieve specific product aspects, e.g. surface smoothness, density, porosity or hollow structures
• B22F 10/85 - Data acquisition or data processing for controlling or regulating additive manufacturing processes
• B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
• B29C 64/393 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
• G01B 11/30 - Measuring arrangements characterised by the use of optical techniques for measuring roughness or irregularity of surfaces

Abstract

An object of the present invention is to provide an additive manufactured object which is free of solidification cracking due to, e.g., heat shrinkage during additive manufacturing of an aluminum alloy; which is free of anisotropy in strength, and has high strength and ductility. An aluminum alloy powder for additive manufacturing includes aluminum alloy particles in which not less than 0.01% by mass and not more than 1% by mass of a grain refiner is trapped. This grain refiner is at least one selected from the borides and carbides of group 4 elements.

IPC Classes  ?

• B22F 1/12 - Metallic powder containing non-metallic particles
• B33Y 10/00 - Processes of additive manufacturing
• B33Y 80/00 - Products made by additive manufacturing
• B22F 10/38 - Process control to achieve specific product aspects, e.g. surface smoothness, density, porosity or hollow structures

Abstract

According to the information processing device of the present invention, a defect position during additive manufacturing can be confirmed and therefore can be repaired efficiently. An information processing device for controlling powder head additive manufacturing, wherein the device is provided with an acquisition unit for acquiring roughness data representing the roughness of the manufactured surface after melting and a defect assessment unit for dividing the manufactured surface into small areas of predetermined dimensions and comparing the roughness data for each small area with a predetermined threshold to assess whether a defect is present in the small area. When an unmelted area is included in a small area, the defect assessment unit substitutes the manufactured surface data of the unmelted area using manufactured surface data within the small area to assess whether there is a defect in the small area that includes the unmelted area. The device is also provided with a defect repair instruction unit for instructing that the area assessed to be a defect by the defect assessment unit be re-melted.

IPC Classes  ?

• B29C 64/386 - Data acquisition or data processing for additive manufacturing

Abstract

The present invention greatly reduces the time and cost involved in development for establishing manufacturing conditions for additive manufacturing, detecting defects during manufacture, and optimizing defect repair. The method includes: a defect-predicting step for predicting defects occurring in the manufactured product based on a combination of a plurality of design data and a plurality of manufacturing conditions; a defect detection data collection step for monitoring the manufactured product during manufacture according to a combination of a plurality of design data and a plurality of manufacturing conditions to collect defect detection data for defect detection; and a process-map-generating step for generating a process map plotting a plurality of manufacturing conditions using the predicted defects and the collected defect detection data. Furthermore, the method includes: a defect repair data collection step for monitoring the manufactured product during manufacture, repairing defects, and collecting defect repair data; and a defect repair data storage step for storing the associated defect and defect repair data using the defect repair data and repair results.

IPC Classes  ?

• B29C 64/393 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
• B33Y 10/00 - Processes of additive manufacturing
• B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
• B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes

Abstract

A nozzle includes a nozzle member includes a first passage, a second passage surrounding the first passage and configured to eject powder and fluid from an end portion, a diffusion room apart from the end portion and configured to supply the powder and the fluid to the second passage, and a supply path to supply the powder and the fluid to the diffusion room. A first inner surface of the nozzle member includes a first curved surface in a conical shape having a diameter decreasing toward the end portion. A second inner surface of the nozzle member includes a second curved surface in a conical shape having a diameter decreasing toward the end portion. The second passage is formed between the first curved surface and the second curved surface. The diffusion room is formed between the first inner surface and the second inner surface.

IPC Classes  ?

• B22F 12/53 - Nozzles
• B22F 12/40 - Radiation means
• B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor

Abstract

The present invention provides a laminating and shaping copper powder capable of shaping a laminated and shaped object of copper having a high electrical conductivity of, for example, 80% IACS or more. The present invention is a laminating and shaping copper powder obtained by mixing a nano-oxide of equal to or more than 0.01 wt % and equal to or less than 0.20 wt % and a pure copper powder. There is also provided a laminated and shaped object using the laminating and shaping copper powder of the present invention. There are also provided a manufacturing method of the laminated and shaped object using the laminating and shaping copper powder of the present invention and a laminating and shaping apparatus using the laminating and shaping copper powder.

IPC Classes  ?

• B22F 1/12 - Metallic powder containing non-metallic particles
• B33Y 10/00 - Processes of additive manufacturing
• B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
• B33Y 70/00 - Materials specially adapted for additive manufacturing
• B22F 1/05 - Metallic powder characterised by the size or surface area of the particles
• B22F 10/28 - Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
• B23K 26/342 - Build-up welding

Abstract

A management system is for managing a material of a three-dimensional deposition device that shapes a laminate by irradiation with a light beam and supplying of the material. The management system includes a shape data acquisition unit that acquires shape data of the laminate; a shaping condition setting unit that sets, based on the shape data, a set shaping condition as a shaping condition for shaping the laminate by the three-dimensional deposition device; a shaping simulation execution unit that executes, based on the set shaping condition, a shaping simulation for shaping the laminate with the set shaping condition; and a required material amount acquisition unit that acquires, based on an execution result of the shaping simulation, a required material amount that is an amount of the material required for shaping the laminate by the three-dimensional deposition device.

IPC Classes  ?

• G06F 30/20 - Design optimisation, verification or simulation
• B29C 64/268 - Arrangements for irradiation using electron beams [EB]
• B29C 64/393 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
• B33Y 10/00 - Processes of additive manufacturing
• B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes

Abstract

A three-dimensional deposition method and a three-dimensional object are provided. Included are: a step of supplying a powder toward an outer peripheral surface of a shaft, irradiating the powder with a laser beam, and sintering or melting and solidifying at least a part of the powder irradiated with the laser beam to form a formed layer, so as to form a three-dimensional object body in which an internal space communicates with an exterior through an opening; a step of discharging a residue such as the powder in the internal space from the opening to an exterior; and a step of emitting the laser beam toward an end surface of the opening to melt and solidify the formed layer, so as to close the opening.

IPC Classes  ?

• B22F 10/28 - Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
• B33Y 80/00 - Products made by additive manufacturing
• B33Y 10/00 - Processes of additive manufacturing

Abstract

In the three-dimensional deposition device and the three-dimensional deposition method, included are: a powder passage and a nozzle injection opening serving as a powder supply unit that supplies powder toward an object to be processed; a laser path serving as a light irradiation unit that irradiates the powder with a laser beam to sinter or melt and solidify at least a part of the powder irradiated with the laser beam to form a formed layer; an interference information acquisition unit that acquires interference information on the object to be processed with the powder injected from the nozzle injection opening based on the shape of the object to be processed; and a controller that changes the powder passage of the powder that the nozzle injection opening supplies to the object to be processed based on the interference information acquired by the interference information acquisition unit.

IPC Classes  ?

• B22F 10/85 - Data acquisition or data processing for controlling or regulating additive manufacturing processes
• B33Y 10/00 - Processes of additive manufacturing
• B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
• B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
• B22F 10/28 - Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
• B22F 12/90 - Means for process control, e.g. cameras or sensors
• B23K 26/34 - Laser welding for purposes other than joining

Abstract

A three-dimensional deposition device and a three-dimensional deposition device method are provided. Included are: a powder passage and a nozzle injection opening that supply a powder toward a working surface of an object to be processed; a laser path that irradiates the powder with a laser beam to sinter or melt and solidify at least a part of the powder irradiated with the laser beam so as to form formed layers; a rotation table unit serving as an irradiation angle changing unit that changes an irradiation angle of the laser beam emitted from the laser path to the working surface; and a controller that controls the rotation table unit so that the irradiation angle on an overhanging side with respect to the working surface is less than 90° in a range in which the formed layers can be formed.

IPC Classes  ?

• B22F 10/28 - Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
• B33Y 10/00 - Processes of additive manufacturing
• B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
• B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
• B22F 10/85 - Data acquisition or data processing for controlling or regulating additive manufacturing processes
• B23K 26/342 - Build-up welding

Abstract

Provided is an information processing device for reflecting an evaluation result of the surface properties of a powder bed in the improvement of shaping quality. This information processing device controls a laminate shaping device that radiates a laser onto a powder bed on which a material powder has been spread to produce a shaped article, the information processing device being provided with a data acquisition unit that acquires 3D point group data on the surface of the powder bed before laser irradiation, a parameter calculation unit that calculates surface property parameters in which the 3D point group data of the powder bed surface has been reduced in dimension, and a control unit that evaluates the condition of the powder bed surface using the surface property parameters of the powder bed surface and controls the production of the shaped article by the laminate shaping device.

IPC Classes  ?

• B22F 3/16 - Both compacting and sintering in successive or repeated steps
• B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes

Abstract

A calculation device used in a manufacturing apparatus for producing a 3D manufactured object from a solidified layer formed by heating a layer-shaped material layer formed of a powder material by irradiation with an energy beam includes a detection unit configured to obtain a state of the material layer based on a shape of the formed material layer, and an output unit configured to output information on the state of the material layer obtained by the detection unit to set a manufacturing condition of the manufacturing apparatus.

IPC Classes  ?

• B22F 10/80 - Data acquisition or data processing
• G06T 7/00 - Image analysis
• B33Y 50/00 - Data acquisition or data processing for additive manufacturing
• B22F 12/90 - Means for process control, e.g. cameras or sensors
• B29C 64/386 - Data acquisition or data processing for additive manufacturing

Abstract

The present invention is a method in which manufacturing density is efficiently increased by using an evaluation criterion having a higher correlation with manufacturing density. The method of the present invention is a manufacturing quality evaluation method, for additive manufacturing, which includes: a data acquisition step for acquiring three-dimensional point group data for a manufacturing surface; a parameter calculation step for reducing the order of the three-dimensional point group data and calculating a three-dimensional surface property parameter extended to a plane region; and an evaluation step in which the three-dimensional surface property parameter is used to evaluate manufacturing quality.

IPC Classes  ?

• B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
• B29C 64/393 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
• B22F 10/366 - Scanning parameters, e.g. hatch distance or scanning strategy
• B22F 10/38 - Process control to achieve specific product aspects, e.g. surface smoothness, density, porosity or hollow structures

Abstract

The present invention is a method using evaluation criteria that are more highly correlated with forming density, to increase efficiently the forming density. This forming quality evaluation method for layered manufacturing comprises: a data acquisition step of acquiring three-dimensional point group data from a formed surface; a parameter computation step of reducing the dimensionality of the three-dimensional point group data to compute three-dimensional surface characteristics parameters that have been expanded for planar regions; and an evaluation step of using the three-dimensional surface characteristics parameters to evaluate the forming quality.

IPC Classes  ?

• B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
• B22F 3/16 - Both compacting and sintering in successive or repeated steps
• B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
• B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
• B29C 64/393 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes

Abstract

The purpose of the present invention is to provide a molded product in which solidification cracking due to heat shrinkage during laminate molding of an aluminum alloy is prevented, and which has no strength anisotropy, and excellent strength and ductility. An aluminum alloy powder for laminate molding is used that is formed from aluminum alloy particles that include 0.01-1 mass% of a refining agent inside of the particles. At least one species selected from borides and carbides of Group 4 elements is used as the refining agent.

IPC Classes  ?

• B22F 1/00 - Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
• C22C 21/00 - Alloys based on aluminium
• B33Y 10/00 - Processes of additive manufacturing
• B33Y 80/00 - Products made by additive manufacturing
• B33Y 70/00 - Materials specially adapted for additive manufacturing
• B22F 10/22 - Direct deposition of molten metal

Abstract

A general-purpose process window is constructed while saving cost and time. A process window generation method comprises performing laminating and shaping of samples using sets of at least two parameters for controlling laminating and shaping, which are scattered in a process window, determining, in a process map generated by mapping evaluation results obtained by evaluating the laminated and shaped samples, a boundary of the evaluation results by machine learning; and repeating the performing laminating and shaping and the determining while using a boundary region including the determined boundary as a new process window, and generating a process window separated by a finally determined boundary as a process window that guarantees quality of laminating and shaping.

IPC Classes  ?

• B22F 10/85 - Data acquisition or data processing for controlling or regulating additive manufacturing processes
• B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
• B22F 10/28 - Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
• B33Y 10/00 - Processes of additive manufacturing
• B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor

Abstract

A calculation device used in a manufacturing apparatus for producing a 3D manufactured object from a solidified layer formed by heating a powder material by irradiation with an energy beam, includes a detection unit configured to obtain a state of at least a part of a predetermined region including a melted portion in which the powder material melts by being heated by irradiation with an energy beam, and an output unit configured to output state information based on the state obtained by the detection unit to change a manufacturing condition of the manufacturing apparatus.

IPC Classes  ?

• B22F 10/85 - Data acquisition or data processing for controlling or regulating additive manufacturing processes
• B22F 12/41 - Radiation means characterised by the type, e.g. laser or electron beam
• B22F 10/368 - Temperature or temperature gradient, e.g. temperature of the melt pool
• B22F 12/49 - Scanners
• B22F 12/90 - Means for process control, e.g. cameras or sensors
• B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes

Abstract

[Problem] To provide a configuration capable of performing efficient and uniform three-dimensional shaping using two-dimensional scanning, in which all laser beams that are scanned upon being transmitted through a plurality of galvanoscanners contribute to formation of a sintered surface. [Solution] The above problem is solved by a three-dimensional shaping method and device that utilize a plurality of galvanoscanners 3 that realize scanning of laser beams 7 along a two-dimensional direction of orthogonal coordinates or cylindrical coordinates by reflection from a first mirror 31, which vibrates via a rotation shaft 30 that is orthogonal to a transmission direction of the laser beams 7 transmitted through a dynamic focus lens 2, and from a second mirror 32, which vibrates via a horizontal rotation shaft 30 that is orthogonal to the rotation shaft 30 of the first mirror 31. The range of the vibration is made freely adjustable on the basis of control of the vibration, and then a region on a sintered surface 6 of a focus point or a nearby position thereof of the laser beams 7 that are irradiated from a direction inclined with respect to the surface of a table 4 is made freely selectable.

IPC Classes  ?

• B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
• B22F 3/16 - Both compacting and sintering in successive or repeated steps
• B33Y 10/00 - Processes of additive manufacturing
• B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
• B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
• B29C 64/268 - Arrangements for irradiation using electron beams [EB]
• B29C 64/277 - Arrangements for irradiation using multiple radiation means, e.g. micromirrors or multiple light-emitting diodes [LED]

Abstract

A nozzle according to one embodiment has an inner surface and an outer surface, and is provided with a first passage through which an energy ray passes, and a second passage that is provided between the inner surface and the outer surface, and through which powder and fluid pass. The second passage includes a second open end on one end thereof in a first direction. A first surface that is one of the inner surface and the outer surface includes a first edge on one end thereof in the first direction. A second surface that is the other one of those includes a second edge on one end thereof in the first direction, and is distanced from the first edge toward the first direction. The fluid ejected from the second open end flows along the second surface, and separates at the second edge.

IPC Classes  ?

• B29C 64/209 - Heads; Nozzles
• B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
• B29C 64/165 - Processes of additive manufacturing using a combination of solid and fluid materials, e.g. a powder selectively bound by a liquid binder, catalyst, inhibitor or energy absorber
• B33Y 10/00 - Processes of additive manufacturing
• B29C 64/268 - Arrangements for irradiation using electron beams [EB]
• B22F 3/24 - After-treatment of workpieces or articles
• B29C 64/264 - Arrangements for irradiation
• B29C 64/205 - Means for applying layers
• B29C 64/20 - Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering - Details thereof or accessories therefor
• B29C 64/371 - Conditioning of environment using an environment other than air, e.g. inert gas
• B22F 12/00 - Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
• B22F 10/10 - Formation of a green body
• B22F 10/00 - Additive manufacturing of workpieces or articles from metallic powder
• B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor

Abstract

A nozzle according to an embodiment of the present invention is provided with a nozzle member, a first inner surface, and a second inner surface. The nozzle member has an end portion in a first direction, and is provided with: a first passage; a second passage which encloses the first passage, and which discharges powder and fluid from the end portion; a diffusion chamber which is separated from the end portion, and which supplies the powder and the fluid into the second passage; and a feed passage for feeding the powder and the fluid into the diffusion chamber. The first inner surface includes a conical first curved surface which is provided in the nozzle member and which has a diameter that decreases toward the end portion. The second inner surface includes a conical second curved surface which is provided in the nozzle member, faces the first inner surface across a gap, and has a diameter that decreases toward the end portion, wherein the second passage is formed between the first curved surface and the second curved surface, and the diffusion chamber is formed between the second inner surface and the first inner surface.

IPC Classes  ?

• B33Y 10/00 - Processes of additive manufacturing
• B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
• B29C 64/141 - Processes of additive manufacturing using only solid materials
• B29C 64/209 - Heads; Nozzles

Abstract

The present invention is a three-dimensional layering device and method wherein the device is provided with: a powder channel (43) and a nozzle injection orifice section (45), that serve as a powder feed part that feeds a powder (P) toward an object to be processed (90); a laser path (44) that serves as a light radiating part and that forms a shaped layer (94) by radiating laser light (L) onto the powder (P) and firing or melting/solidifying at least part of the powder (P) irradiated with the laser light (L); an interference information acquisition unit (56) that acquires information of interference by the powder (P) injected from the nozzle injection orifice section (45) with the object to be processed (90) on the basis of the shape of the object to be processed (90); and a control unit (52) that, on the basis of the interference information acquired by the interference information acquisition unit (56), alters the powder channel (43) for the powder (P) fed by the nozzle injection orifice section (45) toward the object to be processed (90).

IPC Classes  ?

• B23K 26/34 - Laser welding for purposes other than joining
• B23K 26/03 - Observing, e.g. monitoring, the workpiece
• B23K 26/21 - Bonding by welding
• B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
• B29C 64/209 - Heads; Nozzles
• B29C 64/393 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
• B33Y 10/00 - Processes of additive manufacturing
• B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
• B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes

Abstract

The present invention is a three-dimensional layering device and method, wherein the device is provided with: a powder channel (43) and a nozzle injection orifice section (45) that feed a powder (P) toward a surface to be processed (91) of an object to be processed (90); a laser path (44) that forms shaped layers (151, 152, 153, 154) by radiating a laser light (L) onto the powder (P), and firing, or melting/solidifying, at least part of the powder (P) irradiated with the laser light (L); a rotating table section (17), as a radiation angle alteration section, that alters the angle of radiation (θ) of the laser light (L) radiated from the laser channel (44) onto the surface to be treated (91); and a control unit (52) that controls the rotating table section (17) so that the angle of radiation (θ), on the side of overhang with the surface to be processed (91), is within a range that allows formation of the shaped layers (151, 152, 153, 154) and is less than 90°.

IPC Classes  ?

• B23K 26/34 - Laser welding for purposes other than joining
• B23K 26/04 - Automatically aligning, aiming or focusing the laser beam, e.g. using the back-scattered light
• B23K 26/21 - Bonding by welding
• B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
• B29C 64/209 - Heads; Nozzles
• B29C 64/393 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
• B33Y 10/00 - Processes of additive manufacturing
• B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
• B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes

Abstract

The present invention is a three-dimensional layering method and an object with a three-dimensional shape, wherein the method is provided with: a step in which a powder (P) is fed toward an outer peripheral surface (96) of a shaft (95) and laser light (L) is radiated onto the powder (P) to fire, or melt/solidify, at least a part of the powder (P) irradiated with the laser light (L) to form shaped layers, thereby forming an object body with a three-dimensional shape (156) in which an internal space (157) communicates with the outside via an opening section (158); a step in which residue of powder (P) and the like in the internal space (157) is discharged from the opening section (158) to the outside; and a step in which the opening section (158) is blocked by radiating the laser light (L) toward an end surface of the opening section (158) so as to melt and solidify the shaped layers.

IPC Classes  ?

• B23K 26/342 - Build-up welding
• B23K 26/21 - Bonding by welding
• B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
• B33Y 10/00 - Processes of additive manufacturing
• B33Y 80/00 - Products made by additive manufacturing

Abstract

The purpose of the present invention is to provide a copper powder which is for laminate shaping and from which a laminate shaped article of copper having a high electrical conductivity, for example, of at least 80% IACS can be shaped. The present invention is a copper powder which is for laminate shaping and in which 0.01-0.20 wt% of a nano-oxide is mixed with a copper powder. Moreover, provided is a laminate shaped body using the copper powder for laminate shaping according to the present invention. Furthermore, provided are: a method for manufacturing the laminate shaped body using the copper powder for laminate shaping according to the present invention; and a laminate shaping apparatus.

IPC Classes  ?

• B22F 1/00 - Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
• B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
• B22F 3/16 - Both compacting and sintering in successive or repeated steps
• C22C 1/05 - Mixtures of metal powder with non-metallic powder
• B82Y 30/00 - Nanotechnology for materials or surface science, e.g. nanocomposites
• B82Y 40/00 - Manufacture or treatment of nanostructures
• B33Y 10/00 - Processes of additive manufacturing
• B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
• B33Y 80/00 - Products made by additive manufacturing
• B33Y 70/00 - Materials specially adapted for additive manufacturing

Abstract

A surface processing device and method, and a three-dimensional layering apparatus are provided with a powder flow channel (43) as a powder supply unit for supplying powder (P) toward a processing surface (91) of an object (90) to be processed, and a laser path (44) as a light irradiation unit that irradiates the powder P with a laser beam (L) before the powder P reaches the object (90) to be processed, wherein the irradiation position of the laser beam (L) on the processing surface (91) and the powder injection position of the powder (P) are offset.

IPC Classes  ?

• B23K 26/342 - Build-up welding
• B23K 26/04 - Automatically aligning, aiming or focusing the laser beam, e.g. using the back-scattered light
• B23K 26/21 - Bonding by welding
• B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
• B29C 64/209 - Heads; Nozzles
• B33Y 10/00 - Processes of additive manufacturing
• B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor

Abstract

According to the present invention, the amount of material required when a three-dimensional laminating device performs shaping is accurately estimated. This management system is a management system for managing materials for a three-dimensional laminating device, and comprises: a shape data acquisition unit (80) which acquires shape data about a laminated body; a shaping condition setting unit (82) which sets, on the basis of the shape data, set shaping conditions that are shaping conditions for shaping the laminated body by using the three-dimensional laminating device; a shaping simulation executing unit (84) which executes a shaping simulation for shaping the laminated body under the set shaping conditions, on the basis of the set shaping conditions; a necessary material amount acquisition unit (86) which acquires a necessary material amount that is the amount of a material necessary for shaping the laminated body by using the three-dimensional laminating device, on the basis of the execution result of the shaping simulation; and an output control unit (88) which outputs to the outside, information based on the necessary material amount.

IPC Classes  ?

• B33Y 50/00 - Data acquisition or data processing for additive manufacturing
• B29C 64/386 - Data acquisition or data processing for additive manufacturing

Abstract

3 or more is satisfied, the powder is evaluated to be spread into a uniform powder layer in the lamination shaping.

IPC Classes  ?

• G01N 11/14 - Investigating flow properties of materials, e.g. viscosity or plasticity; Analysing materials by determining flow properties by moving a body within the material by using rotary bodies, e.g. vane
• B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
• B33Y 50/00 - Data acquisition or data processing for additive manufacturing
• B23K 26/342 - Build-up welding
• B23K 15/00 - Electron-beam welding or cutting

Abstract

3, the squeegeeing property is evaluated as that the powder can be spread into a uniform powder layer in the lamination shaping. Furthermore, if the 50% particle size of a powder obtained by a laser diffraction method is 3 to 250 μm, the squeegeeing property is evaluated as that the powder can be spread into a uniform powder layer in the lamination shaping.

IPC Classes  ?

• G01N 15/02 - Investigating particle size or size distribution
• G01N 15/00 - Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
• B22F 10/28 - Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
• G01N 3/24 - Investigating strength properties of solid materials by application of mechanical stress by applying steady shearing forces

Abstract

A 3D printer that improves the speed at which a 3D printed article is fabricated. The present invention is a 3D printer, wherein the 3D printer comprises: a fabrication table on which a 3D printed article is fabricated; a light source that directs a laser beam on the fabrication table; a diffraction grating provided between the fabrication table and the light source, the diffraction grating splitting the laser light and emitting the resulting beams at the fabrication table; and a powder-supplying part that supplies powder to the modeling table.

IPC Classes  ?

• B29C 64/135 - Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using layers of liquid which are selectively solidified characterised by the energy source therefor, e.g. by global irradiation combined with a mask the energy source being concentrated, e.g. scanning lasers or focused light sources
• B33Y 10/00 - Processes of additive manufacturing
• B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor

Abstract

In this invention, a copper powder to which phosphorus (P) is added is developed such that a high-density laminated and shaped product can be obtained by a laminating and shaping method using a fiber laser as a heat source by appropriately reducing the electrical conductivity of copper, so a laminated and shaped product having a high density and a high electrical conductivity can be obtained. This invention is a copper powder for lamination shaping in which a phosphorus element is added to pure copper. The copper powder desirably contains 0.01 wt % or more of the phosphorus element. The copper powder more desirably contains 0.04 wt % or more of the phosphorus element. The copper powder desirably contains 0.30 wt % or less of the phosphorus element. The copper powder more desirably contains 0.24 wt % or less of the phosphorus element. No element other than the phosphorus element is desirably added to the copper powder.

IPC Classes  ?

• C22C 1/04 - Making non-ferrous alloys by powder metallurgy
• B33Y 70/00 - Materials specially adapted for additive manufacturing
• B33Y 10/00 - Processes of additive manufacturing
• B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
• B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
• B22F 1/00 - Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
• B22F 3/16 - Both compacting and sintering in successive or repeated steps
• B22F 10/10 - Formation of a green body
• B22F 10/28 - Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
• B22F 12/41 - Radiation means characterised by the type, e.g. laser or electron beam
• B22F 1/052 - Metallic powder characterised by the size or surface area of the particles characterised by a mixture of particles of different sizes or by the particle size distribution

Abstract

This invention provides a copper powder to which tin (Sn) is added such that a high-density laminated and shaped product can be obtained by a laminating and shaping method using a fiber laser as a heat source by appropriately reducing the electrical conductivity of copper, so a laminated and shaped product having a high density and a high electrical conductivity can be obtained. That is, this invention provides a copper powder for lamination shaping in which a tin element is added to pure copper. Desirably, the copper powder contains 0.5 wt % or more of the tin element. More desirably, the copper powder contains 5.0 wt % or more of the tin element. When the product has an electrical conductivity sufficient as a copper product, the copper powder desirably contains 6.0 wt % or less of the tin element. Furthermore, no element other than the tin element is desirably added to the copper powder.

IPC Classes  ?

• B22F 1/00 - Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
• B22F 10/28 - Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
• B33Y 70/00 - Materials specially adapted for additive manufacturing
• B33Y 80/00 - Products made by additive manufacturing

Abstract

The present invention can evaluate whether a powder for metal additive manufacturing is a powder for which smoking will not occur even when a preheating temperature is lowered. This evaluation method for a powder for metal additive manufacturing includes: an impedance measurement step in which the impedance of a metal powder is measured while the metal powder is heated; a capacitance component extraction step in which a capacitance component is extracted from the measured impedance; and an evaluation step in which, if the capacitance value becomes zero before the metal powder reaches a prescribed temperature, the metal powder is evaluated as being a powder material for metal additive manufacturing for which smoking will not occur during bombardment by an electron beam even when a preheating temperature is lowered.

IPC Classes  ?

• B22F 3/16 - Both compacting and sintering in successive or repeated steps
• B22F 1/00 - Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
• B22F 1/02 - Special treatment of metallic powder, e.g. to facilitate working, to improve properties; Metallic powders per se, e.g. mixtures of particles of different composition comprising coating of the powder
• B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
• B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
• B33Y 40/00 - Auxiliary operations or equipment, e.g. for material handling
• B33Y 50/00 - Data acquisition or data processing for additive manufacturing

Abstract

The present invention provides a powder for metal additive manufacturing, wherein due to simple mechanical processing, smoking does not occur even when a preheating temperature is lowered. In this powder for metal additive manufacturing, a solidification structure including a dendrand structure of a surface of a metal powder is flattened. The flattening of the solidification structure including the dendrand structure is achieved via mechanical processing that includes collision processing of the metal powder. The mechanical processing is performed with the metal powder heated to 100°C-300°C. The powder for metal additive manufacturing is a metal powder wherein the capacitance component of the impedance as measured with the metal powder heated to a prescribed temperature is zero. This metal powder is a powder of a metal alloy that is produced according to an atomization method or a plasma rotating electrode method. This metal alloy includes a nickel-based alloy, a cobalt-chromium alloy, an iron-based alloy, an aluminum alloy, or a titanium alloy.

IPC Classes  ?

• B22F 1/00 - Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
• B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
• B22F 3/16 - Both compacting and sintering in successive or repeated steps
• B33Y 70/00 - Materials specially adapted for additive manufacturing

Abstract

The present invention provides a powder for metal additive manufacturing that does not cause smoke to be emitted even when a preheating temperature is lowered by simple mechanical processing. In the powder for metal additive manufacturing, a solidified structure including a dendrite structure on the surface of a metal powder is flattened. Flattening of the solidified structure including the dendrite structure is achieved by mechanical processing including collision processing of the metal powder. The metal powder is heated to 100-300°C when performing the mechanical processing. The powder for metal additive manufacturing is a metal powder in which the capacitive component of impedance measured after heating to a predetermined temperature is zero. The metal powder is a powder of a metal alloy produced by an atomizing method or a plasma rotating electrode method. The metal alloy includes a nickel-based alloy, a cobalt-chrome alloy, an iron-based alloy, an aluminum alloy, and a titanium alloy.

IPC Classes  ?

• B22F 1/00 - Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
• B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
• B22F 3/16 - Both compacting and sintering in successive or repeated steps
• B33Y 70/00 - Materials specially adapted for additive manufacturing

Abstract

The present invention makes it possible to evaluate whether a metal powder is a powder for metal additive manufacturing that does not cause smoke to be emitted even when a preheating temperature is lowered. This evaluation method for a powder for metal additive manufacturing includes: an impedance measurement step in which the impedance of a metal powder is measured while heating the metal powder; a capacitive component extraction step for extracting the capacitive component from the measured impedance; and an evaluation step in which when the capacitive component becomes zero before the metal powder reaches a predetermined temperature, the metal powder is evaluated to be a powder material for metal additive manufacturing that does not cause smoke to be emitted when irradiated with an electron beam even when the preheating temperature of the metal powder is lowered.

IPC Classes  ?

• B22F 3/16 - Both compacting and sintering in successive or repeated steps
• B22F 1/00 - Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
• B22F 1/02 - Special treatment of metallic powder, e.g. to facilitate working, to improve properties; Metallic powders per se, e.g. mixtures of particles of different composition comprising coating of the powder
• B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
• B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
• B33Y 40/00 - Auxiliary operations or equipment, e.g. for material handling
• B33Y 50/00 - Data acquisition or data processing for additive manufacturing

Abstract

The present invention constructs a general purpose process window while saving cost and time. This information processing device is provided with: a parameter generation unit that generates a group of at least two parameters for controlling layered-molding so as to be dispersed within a process window; a sample molding instruction unit that instructs a layered-molding unit to layer-mold a sample, using the group of at least two dispersed parameters; a sample quality evaluation unit that acquires an image of the layer-molded sample and evaluates the quality of the sample; a boundary determination unit that uses machine learning to determine the boundaries of the evaluation results, in a process map generated by mapping the sample evaluation results; and a process window generation unit that uses a boundary region including the determined boundaries as a new process window to repeat the parameter generation process, the sample molding instruction process, the quality evaluation process and the boundary determination process, and that generates a process window separated by the ultimately determined boundaries, as a process window guaranteeing layered-molding quality.

IPC Classes  ?

• B29C 64/386 - Data acquisition or data processing for additive manufacturing
• B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
• B33Y 50/00 - Data acquisition or data processing for additive manufacturing

Abstract

Provided is an arithmetic device that is used in a modeling apparatus that models a three-dimensional structure from a solidified layer modeled by heating a powder material by irradiation with energy rays, the arithmetic device comprising: a detection unit that determines the state of at least a portion of a predetermined region that includes a melted part in which the powder material is melted by heating by irradiation with energy rays; and an output unit that outputs state information on the basis of the state determined by the detection unit in order to change a modeling condition of the modeling apparatus.

IPC Classes  ?

• B29C 64/393 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
• B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
• B22F 3/16 - Both compacting and sintering in successive or repeated steps
• B33Y 10/00 - Processes of additive manufacturing
• B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
• B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes

Abstract

This computation device used in a molding device for molding a three-dimensional molded object from a solid layer molded by heating a layer-shaped material layer, formed from a powder material, by irradiation with energy rays is provided with a detection unit for determining a state of the material layer based on the shape of the formed material layer, and an output unit for outputting information relating to the state of the material layer determined by the detection unit, in order to set a molding condition for the molding device.

IPC Classes  ?

• B29C 64/386 - Data acquisition or data processing for additive manufacturing
• B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
• B22F 3/16 - Both compacting and sintering in successive or repeated steps
• B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
• B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
• B33Y 50/00 - Data acquisition or data processing for additive manufacturing
• B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes

Abstract

The purpose of the present invention is to shape a three-dimensional laminate shaped object with high accuracy. Provided is a blade that, in a three-dimensional laminate shaping device, has a bottom surface contacting a surface of powder material and flattens the surface of the powder material laid on a shaping board while moving horizontally. The blade has a protrusion part extending in a movement direction from the bottom surface in at least one of movement directions in which the blade moves.

IPC Classes  ?

• B29C 64/214 - Doctor blades
• B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
• B22F 3/16 - Both compacting and sintering in successive or repeated steps
• B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
• B29C 64/393 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
• B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
• B33Y 50/00 - Data acquisition or data processing for additive manufacturing
• B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes

Abstract

The present invention relates to a powder removing device that efficiently performs an operation to remove powder material having not been used to form a shaped object from each storage section with a simple configuration. The powder removing device is a powder removing device that removes powder material having not been used to form a shaped object in a shaping device that uses the powder material, the powder removing device being provided with: a first storage section and a second storage section that temporarily store powder material having not been used to form a shaped object; and a selecting switch that includes a valve having an open state or a closed state and changes a state of the valve to select a discharging source of the temporarily-stored powder material between the first storage section and the second storage section.

IPC Classes  ?

• B29C 64/35 - Cleaning
• B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
• B22F 3/16 - Both compacting and sintering in successive or repeated steps
• B33Y 10/00 - Processes of additive manufacturing
• B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
• B33Y 40/00 - Auxiliary operations or equipment, e.g. for material handling

Abstract

The purpose of the present invention is to accurately control a material supply amount. A material supply device comprises: a hopper that stores material of a three-dimensional laminate shaped object; a column-shaped recoater having a rotation axis; and a driving unit that rotates the recoater while moving the same in a direction perpendicular to the rotation axis and in a horizontal direction. The recoater has on an outer peripheral surface thereof a plurality of grooves that temporarily store the material supplied from the hopper and are provided in a direction along the rotation axis.

IPC Classes  ?

• B29C 64/209 - Heads; Nozzles
• B29C 64/343 - Metering
• B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor

Abstract

The purpose of the present invention is to miniaturize an entire configuration of a three-dimensional laminate shaping device. The three-dimensional laminate shaping device is provided with: a case that accommodates a shaping board; at least two arms that are coupled to the shaping board and extended in a horizontal direction to support the shaping board; and a moving unit that moves the arms up and down. The case is provided with: a slit that is provided on a lateral surface of the case and extended in a vertical direction to insert the arms that move up and down; a tape-shaped seal member of which upper and lower ends are fixed and that is extended in the vertical direction to prevent leakage of powder from the slit; and a winding member that winds the tape-shaped seal member so as to inwardly expand in a convex shape at positions of arm ends inserted in the case via the slit.

IPC Classes  ?

• B29C 64/25 - Housings, e.g. machine housings
• B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor

Abstract

The present invention relates to a powder reuse device that efficiently reuses a powder material by taking into consideration whether the powder material removed from a molding table during additive manufacturing has been stored. This powder reuse device comprises: a storage unit that is provided at the periphery of a molding table where additive manufacturing is performed, and that temporarily stores powder material removed from the molding table during additive manufacturing; a detection unit for detecting whether powder material has been stored in the storage unit; a recovery unit for recovering the powder material stored in the storage unit when powder has been detected by the detection unit; and a supply unit for supplying the powder material recovered by the recovery unit to a recoater for carrying out recoating on the molding table.

IPC Classes  ?

• B22F 3/16 - Both compacting and sintering in successive or repeated steps
• B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
• B29C 64/357 - Recycling
• B33Y 10/00 - Processes of additive manufacturing
• B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
• B33Y 40/00 - Auxiliary operations or equipment, e.g. for material handling
• B33Y 50/00 - Data acquisition or data processing for additive manufacturing

Abstract

The purpose of the present invention is to accurately evaluate a powder material as a raw material for additively manufactured three-dimensional objects. The present invention relates to a powder material evaluation device, the powder material serving as a raw material for additively manufactured three-dimensional objects, the device being provided with: a calculation unit for calculating the volume of a closed space formed by a plurality of particles forming the powder material using powder component data relating to the particles of the powder material; and an evaluation unit for evaluating the powder material by comparing the volume of the closed space calculated by the calculation unit and a predetermined threshold value.

IPC Classes  ?

• B29C 64/386 - Data acquisition or data processing for additive manufacturing
• B22F 3/16 - Both compacting and sintering in successive or repeated steps
• B33Y 50/00 - Data acquisition or data processing for additive manufacturing
• G01N 15/02 - Investigating particle size or size distribution

Abstract

A nozzle according to one embodiment has an inner surface and an outer surface, and is provided with a first passage through which an energy ray passes, and a second passage that is provided between the inner surface and the outer surface, and through which powder and fluid pass. The second passage includes a second open end on one end thereof in a first direction. A first surface that is one of the inner surface and the outer surface includes a first edge on one end thereof in the first direction. A second surface that is the other one of those includes a second edge on one end thereof in the first direction, and is distanced from the first edge toward the first direction. The fluid ejected from the second open end flows along the second surface, and separates at the second edge.

IPC Classes  ?

• B29C 64/209 - Heads; Nozzles
• B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
• B29C 64/165 - Processes of additive manufacturing using a combination of solid and fluid materials, e.g. a powder selectively bound by a liquid binder, catalyst, inhibitor or energy absorber
• B33Y 10/00 - Processes of additive manufacturing
• B29C 64/268 - Arrangements for irradiation using electron beams [EB]
• B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
• B22F 3/24 - After-treatment of workpieces or articles
• B29C 64/264 - Arrangements for irradiation
• B29C 64/205 - Means for applying layers
• B29C 64/20 - Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering - Details thereof or accessories therefor
• B29C 64/371 - Conditioning of environment using an environment other than air, e.g. inert gas
• B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor

Abstract

A nozzle according to one embodiment includes a nozzle unit and a guide surface. A first passage, a second passage, and the guide surface are provided to the nozzle unit. The first passage has a first open end. The second passage has a second open end, and a section that is positioned upstream of the second open end and that extends in a second direction. The guide surface has an edge in a first direction. The guide surface is exposed on the outer side at the edge, is along a third direction at the edge, the third direction being a direction becoming more distanced from an axis than the second direction does, as the third direction is extended further toward the first direction. A flow of fluid ejected from the second open end follows the guide surface, and becomes separated from the nozzle unit at the edge.

IPC Classes  ?

• B29C 64/209 - Heads; Nozzles
• B33Y 10/00 - Processes of additive manufacturing
• B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
• B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
• B29C 64/371 - Conditioning of environment using an environment other than air, e.g. inert gas
• B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
• B22F 3/24 - After-treatment of workpieces or articles
• B29C 64/20 - Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering - Details thereof or accessories therefor
• B29C 64/268 - Arrangements for irradiation using electron beams [EB]
• B29C 64/165 - Processes of additive manufacturing using a combination of solid and fluid materials, e.g. a powder selectively bound by a liquid binder, catalyst, inhibitor or energy absorber
• B29C 64/205 - Means for applying layers
• B29C 64/264 - Arrangements for irradiation

Abstract

The present invention relates to an evaluation method of a laminate molding powder, for evaluating a laminate molding powder on the basis of stable determination criteria. In this laminate molding powder evaluation method, the fluidity with which a uniform powder layer can be formed in laminate molding is evaluated using the adhesive force of the powder calculated from the fracture envelope obtained by shear testing. Further, the shear testing is performed with a powder rheometer, and the adhesive force is calculated from the relation between vertical stress and shear stress in the powder rheometer. If the adhesive force is less than or equal to 0.450 kPa, then the powder is evaluated as being capable of forming a uniform powder layer in laminate molding. Furthermore, if the 50% particle diameter of the powder, measured with a laser diffraction method, is 3-250 µm and/or the apparent density of the powder is greater than or equal to 3.5 g/cm3, then the powder is evaluated as capable of forming a uniform powder layer in laminate molding.

IPC Classes  ?

• G01N 11/00 - Investigating flow properties of materials, e.g. viscosity or plasticity; Analysing materials by determining flow properties
• B22F 3/16 - Both compacting and sintering in successive or repeated steps
• G01N 3/24 - Investigating strength properties of solid materials by application of mechanical stress by applying steady shearing forces

Abstract

The present invention relates to an evaluation method of a laminate molding powder, for evaluating squeezing properties of a laminate molding powder on the basis of stable determination criteria. In this laminate molding powder evaluation method, at least the satellite adhesion ratio of the powder and the apparent density of the powder are used to evaluate the squeezing properties of the powder for laminate molding. If the satellite adhesion ratio, which is the ratio of the number of powder particles adhered as satellites, to the total number of powder particles, is less than or equal to 50% and the apparent density of the powder is greater than or equal to 3.5 g/cm3, then the powder is evaluated as being capable of forming a uniform powder layer in laminate molding. Furthermore, if the 50% particle diameter of the powder, measured with a laser diffraction method, is 3-250 µm, then the powder is evaluated as capable of forming a uniform powder layer in laminate molding.

IPC Classes  ?

• G01N 11/00 - Investigating flow properties of materials, e.g. viscosity or plasticity; Analysing materials by determining flow properties
• B22F 3/16 - Both compacting and sintering in successive or repeated steps
• G01N 3/24 - Investigating strength properties of solid materials by application of mechanical stress by applying steady shearing forces

Abstract

A three-dimensional laminating and shaping apparatus capable of measuring the quality of a three-dimensional laminated and shaped object in real time during shaping of the three-dimensional laminated and shaped object includes a material ejector that ejects the material of the three-dimensional laminated and shaped object onto a shaping table on which the three-dimensional laminated and shaped object is shaped, a light beam irradiator that irradiates the ejected material with a light beam, a data acquirer that acquires monitoring data used to monitor a shaping state of the three-dimensional laminated and shaped object during shaping of the three-dimensional laminated and shaped object, and a shaping quality estimator that estimates shaping quality of the three-dimensional laminated and shaped object based on the monitoring data.

IPC Classes  ?

• B29C 64/393 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
• B29C 64/268 - Arrangements for irradiation using electron beams [EB]
• B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
• B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
• B33Y 10/00 - Processes of additive manufacturing
• B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
• B23K 26/342 - Build-up welding
• B29C 64/118 - Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using filamentary material being melted, e.g. fused deposition modelling [FDM]
• B22F 10/00 - Additive manufacturing of workpieces or articles from metallic powder
• B22F 10/10 - Formation of a green body

Abstract

The present invention provides a copper powder for additive manufacturing, wherein tin (Sn) is added so that a high-density additive manufactured product is obtained by means of an additive manufacturing method in which a fiber laser is used as a heat source by appropriately reducing the electrical conductivity of copper. According to the present invention, an additive manufactured product having a high density and high electrical conductivity can be obtained. This copper powder for additive manufacturing is obtained by adding elemental tin to pure copper. The copper powder preferably contains at least 0.5 wt% of elemental tin, and more preferably at least 5.0 wt% of elemental tin. The copper powder contains at most 6.0 wt% of elemental tin when having sufficient electrical conductivity for a copper product. It is preferable that no elements other than elemental tin are added to the copper powder.

IPC Classes  ?

• B22F 1/00 - Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
• B22F 3/16 - Both compacting and sintering in successive or repeated steps

Abstract

The present invention can obtain a layer molded product having high density and high electrical conductivity through development of a copper powder for layer molding to which phosphorus (P) is added so as to suitably reduce the electrical conductivity of copper and thereby obtain a high-density layer molded product using a layer molding method in which a fiber laser is used as a heat source. The present invention is a copper powder for layer molding, in which phosphorus element is added to pure copper. The copper powder for layer molding preferably contains 0.01 wt% or more of phosphorus element. In addition, the copper powder for layer molding preferably contains 0.04 wt% or more of phosphorus element. In addition, the copper powder for layer molding preferably contains 0.30 wt% or less of phosphorus element. In addition, the copper powder for layer molding preferably contains 0.24 wt% or less of phosphorus element. In addition, it is preferable for elements other than phosphorus element not to be added to the copper powder for layer molding.

IPC Classes  ?

• B22F 1/00 - Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
• B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
• B22F 3/16 - Both compacting and sintering in successive or repeated steps

Abstract

The present invention relates to a powder for metal additive manufacturing with which, by processing the metal powder so as to lower the pre-sintering temperature, additive manufacturing time can be reduced and unnecessary powder can be easily eliminated after additive manufacturing. This powder for metal additive manufacturing has a conductive material coated onto the surface of metal powder. When the metal powder is a nickel alloy powder that includes nickel as the main component and chromium and iron as the main secondary components, nickel is coated as a conductive material by plating or the like. Moreover, the particle size range for the metal powder is 10 – 200 µm, preferably 25 – 150 µm, and more preferably 45 – 105 µm. In addition, the range for the thickness of the conductive material is preferably 0.1 – 1 µm, and preferably 0.3 µm or greater.

IPC Classes  ?

• B22F 1/02 - Special treatment of metallic powder, e.g. to facilitate working, to improve properties; Metallic powders per se, e.g. mixtures of particles of different composition comprising coating of the powder
• B22F 1/00 - Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
• B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
• B22F 3/16 - Both compacting and sintering in successive or repeated steps
• B33Y 70/00 - Materials specially adapted for additive manufacturing

Abstract

The present invention provides a metal laminated shaped article that includes aluminum and that is sound and free of defects. The metal lamination shaping powder according to the present invention for shaping this metal laminated shaped article is an aluminum-based powder having a 50% particle size of 10 µm to less than 100 µm on a volume basis when the particle size distribution is measured by a laser diffraction/scattering method, a specific surface area of 0.5 m2/g or less, and an oxygen amount per unit surface area of 30 mg/m2 to 100 mg/m2, the relationship between the hydrogen amount (X mL: standard state) per 100 g of the aluminum-based powder and the specific surface area (Y m2/g), and the relationship between the hydrogen amount (X mL: standard state) and the oxygen amount (Z weight%) being represented by X/Y ឬ 151 and Z/X ᡶ 0.0022. A metal laminated shaped article shaped through use of a three-dimensional lamination shaping device using this metal lamination shaping powder by a powder-floor melt-bonding system has a hydrogen content of 3 mL or less per 100 g (standard state) and a relative density of 99% or greater.

IPC Classes  ?

• B22F 1/00 - Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
• B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
• B22F 3/16 - Both compacting and sintering in successive or repeated steps
• B22F 9/08 - Making metallic powder or suspensions thereof; Apparatus or devices specially adapted therefor using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
• B33Y 70/00 - Materials specially adapted for additive manufacturing
• B33Y 80/00 - Products made by additive manufacturing

Abstract

Through the present invention, excessive evaporation of a powder is prevented. A three-dimensional-shaping device, provided with: an electron gun for generating an electron beam; one or more stages of deflector for one-dimensionally deflecting or two-dimensionally deflecting the electron beam; at least one lens for focusing the electron beam, the lens being provided between the electron gun and the deflector; and a control means for controlling the speed of scanning and the direction of deflection by the deflector; the deflector being provided with a control means for canning and irradiating a predetermined region and furthermore controlling the cross-sectional diameter of the electron beam, a step for melting the powder being divided into two steps and the two steps being designated as first and second melting steps in order, a heat per unit area necessary to increase the temperature of the powder from a pre-heating temperature to the melting point thereof at each point being applied to the powder in the first melting step, and heat per unit area equal to or greater than the heat per unit area necessary for the powder to receive the heat of fusion thereof and melt being applied to the powder in the second melting step, and the cross-sectional diameter of the beam furthermore being increased in the second melting step, whereby the electric power per unit area of the electron beam applied to the powder in the second melting step is made smaller than the electric power per unit area of the electron beam applied to the powder in the first melting step.

IPC Classes  ?

• B22F 3/105 - Sintering only by using electric current, laser radiation or plasma

Abstract

A rise in temperature of a work (laminating base material) is controlled and the occurrence of thermal deformation is suppressed. There is provided a three-dimensional laminating and shaping apparatus having the following arrangement. That is, the three-dimensional laminating and shaping apparatus includes a material ejector that ejects a material of a three-dimensional laminated and shaped object onto a work on which the three-dimensional laminated and shaped object is shaped. The three-dimensional laminating and shaping apparatus includes a light beam irradiator that irradiates the ejected material with a light beam. Furthermore, the three-dimensional laminating and shaping apparatus includes a jig to which the work is detachably attached. The jig includes a channel supplied with a cooling medium for cooling the work.

IPC Classes  ?

• B29C 67/00 - Shaping techniques not covered by groups , or
• B29C 64/245 - Platforms or substrates
• B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
• B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
• B23K 26/144 - Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor the fluid stream containing particles, e.g. powder
• B22F 10/20 - Direct sintering or melting
• B33Y 10/00 - Processes of additive manufacturing
• B23K 26/342 - Build-up welding
• B23K 26/70 - Auxiliary operations or equipment
• B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
• B29C 64/393 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
• B29C 64/268 - Arrangements for irradiation using electron beams [EB]
• B22F 10/10 - Formation of a green body

Abstract

The temperature of a molten pool is measured based on an image captured by an infrared camera or the like. A three-dimensional laminating and shaping apparatus include a material ejector that ejects a material of a three-dimensional laminated and shaped object. The three-dimensional laminating and shaping apparatus includes a light beam irradiator that irradiates the ejected material with a light beam. The three-dimensional laminating and shaping apparatus includes an image capturer that captures a molten pool of the material formed by irradiating the ejected material with the light beam. The three-dimensional laminating and shaping apparatus includes a temperature deriving unit that derives a temperature of the molten pool based on a luminance of an image of the molten pool captured by the image capturer.

IPC Classes  ?

• B23K 26/342 - Build-up welding
• B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
• B33Y 10/00 - Processes of additive manufacturing
• B23K 26/03 - Observing, e.g. monitoring, the workpiece
• B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
• B23K 26/082 - Scanning systems, i.e. devices involving movement of the laser beam relative to the laser head
• B23K 26/14 - Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor
• B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
• B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
• B29C 64/393 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
• G01J 5/00 - Radiation pyrometry, e.g. infrared or optical thermometry
• B23K 26/144 - Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor the fluid stream containing particles, e.g. powder

Abstract

The purpose of the present invention is to form a 3D printed article having a corner portion with high precision in 3D printing. The present invention is a 3D printing device that is provided with: a material supply unit for supplying a material for a 3D printed article onto a forming platform; a light beam emission unit for emitting a light beam; a control unit for controlling the scanning direction and scanning speed of the light beam; a forming model acquisition unit for acquiring a forming model for the 3D printed article; a forming path determination unit for determining a forming path on the basis of the acquired forming model; an extraction unit for extracting, from the determined forming path, the start and end points of the forming path and a junction point at which the direction of the forming path changes; and an additional path determination unit for determining an additional path for at least one of the extracted start point, the end point, and the junction point. The control unit controls the scanning direction and scanning speed of the light beam on the basis of the forming path and the additional path.

IPC Classes  ?

• B22F 3/16 - Both compacting and sintering in successive or repeated steps
• B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
• B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
• B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes

Abstract

The present invention minimizes variations in the coupling efficiency of the light output from a laser element to an optical fiber. A semiconductor laser module comprises a plurality of semiconductor laser elements, an optical fiber, a light collection means for collecting the laser light emitted from the semiconductor laser elements into the optical fiber, and a housing having the laser elements, the light collection means, and the optical fiber mounted therein, the semiconductor laser module including at least one thin plate disposed between the laser elements and the top plate of the housing and mounted on the top plate to form a gap with the top plate.

IPC Classes  ?

• G02B 6/42 - Coupling light guides with opto-electronic elements
• H01S 5/022 - Mountings; Housings
• H01S 5/024 - Arrangements for thermal management

Abstract

The present invention reduces an overall device stop time caused by a molding sequence, maintenance, or material replacement, etc. This three-dimensional laminate molding device is provided with: a plurality of molding chambers; at least one material providing unit which provides a material of a three-dimensional laminate molded object to molding stands in the plurality of molding chambers; at least one light irradiation unit which irradiates light to a material; and a control unit which controls the material providing unit and the light irradiation unit, wherein when the material providing unit provides the material onto the molding stands on one side, the control unit controls the light irradiation unit to irradiate the light onto the molding stands on another side.

IPC Classes  ?

• B29C 67/00 - Shaping techniques not covered by groups , or
• B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor

Abstract

The present invention is an additive manufacturing control device that corrects a laser irradiation position in response to changes in the laser irradiation position during additive manufacturing with a stereolithography apparatus. The additive manufacturing control device controls an additive manufacturing unit that manufactures an additively manufactured object and that is provided with a squeegee blade for blanketing a layering material upon the top layer of the additively manufactured object and an irradiation unit for irradiating the layering material. The additive manufacturing control device is equipped with a misalignment acquisition unit for acquiring the misalignment of the irradiation position of the irradiation light on the surface of the squeegee blade that receives the irradiation light from the irradiation unit, and an irradiation position correction unit for correcting the irradiation position from the irradiation unit on the basis of the misalignment.

IPC Classes  ?

• B29C 67/00 - Shaping techniques not covered by groups , or
• B33Y 10/00 - Processes of additive manufacturing
• B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor

Abstract

The present invention pertains to a three-dimensional lamination shaping system that reduces a scan time for divided scanning regions and reduces a shaping time for three-dimensional lamination shaping. The three-dimensional lamination shaping system is provided with: a lamination shaping unit that has at least one irradiation unit to irradiate lamination material and shapes respective layers of a lamination shaped object made of the lamination material as an aggregate of cell regions; and a lamination shaping control unit that controls the lamination shaping unit so that the irradiation unit performs a spiral scan along the sides of a scanning region to irradiate the lamination material inside the cell regions, the scanning region for irradiating the cell regions with the irradiation unit having a shape having at least five apexes with the internal angle of 90 degrees or more.

IPC Classes  ?

• B29C 67/00 - Shaping techniques not covered by groups , or
• B33Y 10/00 - Processes of additive manufacturing
• B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
• B33Y 50/00 - Data acquisition or data processing for additive manufacturing

Abstract

The present invention pertains to a 3D additive manufacturing system that eliminates effects resulting from the flow of gas between the irradiation positions of a plurality of irradiation units. This 3D additive manufacturing system is equipped with: an additive manufacturing unit that is provided with a plurality of irradiation units for irradiating a layering material and a removal unit for creating a flow path across the layering surface and removing powder dust generated from the irradiated layering material, and that irradiates each layer of an additively manufactured object comprising the layering material with the plurality of irradiation units and manufactures each layer as a collection of cell regions; and an additive manufacturing control unit that controls the selection of cell regions irradiated by each of the plurality of irradiation units such that the powder dust generated at a cell region upstream on the flow path does not affect manufacturing at a cell region downstream on the flow path.

IPC Classes  ?

• B29C 67/00 - Shaping techniques not covered by groups , or
• B33Y 10/00 - Processes of additive manufacturing
• B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
• B33Y 50/00 - Data acquisition or data processing for additive manufacturing

Abstract

The present invention provides a granular material that can be excellently coated regardless of the type of granular material and can be used without regenerating a refractory aggregate of a non-printed portion in manufacturing a mold by additive manufacturing. The granular material is a granular material for use in manufacturing a mold by additive manufacturing, wherein a coating material in which acid is mixed in or coated for a catalyst that activates and cures an organic binder for bonding the granular material contains material that can form a hydration reaction having a moisture absorbing function and that exhibits a catalytic effect.

IPC Classes  ?

• B22C 1/22 - Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents of organic agents of resins or rosins
• B22C 9/02 - Sand moulds or like moulds for shaped castings
• B33Y 10/00 - Processes of additive manufacturing
• B33Y 70/00 - Materials specially adapted for additive manufacturing

Abstract

The purpose of the present invention is to effectively prevent charge-up on an unsintered region. This three-dimensional additive manufacturing device is provided with a straight funnel for dropping a material for a three-dimensional additively manufactured object onto a manufacturing surface on which a three-dimensional additively manufactured object is to be manufactured. Additionally, the three-dimensional additive manufacturing device is provided with an electron gun for generating an electron beam. The three-dimensional additive manufacturing device is further provided with a charge shield for shielding the material dropped on the manufacturing surface when the electron beam is emitted onto the material. Furthermore, the three-dimensional additive manufacturing device is provided with a raising/lowering mechanism for raising and lowering the charge shield.

IPC Classes  ?

• B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
• B22F 3/16 - Both compacting and sintering in successive or repeated steps
• B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
• B33Y 50/00 - Data acquisition or data processing for additive manufacturing

Abstract

The purpose of the present invention is to prevent a decrease in the temperature of a fabrication surface and to maintain the temperature of the fabrication surface. A three-dimensional additive fabrication device comprises: material scattering means for scattering material of a three-dimensional additively fabricated object onto a fabrication surface on which the three-dimensional additively fabricated object is to be fabricated; an electron gun for generating an electron beam; at least one polarizer for one-dimensionally or two-dimensionally polarizing the electron beam on the fabrication surface; at least one lens provided between the electron gun and the polarizer and causing the electron beam to converge; focus control means for controlling focus of the electron beam on the basis of a region scanned by the electron beam; and control means for controlling a polarizing direction of the polarizer and a scanning speed.

IPC Classes  ?

• B29C 67/00 - Shaping techniques not covered by groups , or
• B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor

Abstract

The present invention effectively suppresses the occurrence of scattered electrons such as secondary electrons and reflected electrons. This 3D additive manufacturing device is equipped with a linearly-shaped funnel for spreading a material for a 3D additively manufactured object upon a manufacturing surface whereon the 3D additively manufactured object is manufactured. The 3D additive manufacturing device is also equipped with an electron gun for generating an electron beam. The 3D additive manufacturing device is further equipped with a metallic deposition-preventing cover that is provided between the manufacturing surface and the electron gun. In addition, the 3D additive manufacturing device is equipped with a DC power source that applies a positive voltage to the deposition-preventing cover.

IPC Classes  ?

• B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
• B22F 3/16 - Both compacting and sintering in successive or repeated steps
• B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
• B33Y 50/00 - Data acquisition or data processing for additive manufacturing

Abstract

The present invention manufactures a 3D additively manufactured object with a high degree of precision. Provided is a 3D additive manufacturing device that is equipped with a material injecting unit for injecting material for the 3D additively manufactured object upon a manufacturing base. The 3D additive manufacturing device is also equipped with a light beam irradiating unit for irradiating the injected material with light beams. The 3D additive manufacturing device is further equipped with a beam pathway controlling unit that is disposed upon the beam pathway of the light beams, detects the convergence position of the material upon the manufacturing surface, and controls the beam pathway of the light beams on the basis of the detected convergence position. The beam pathway controlling unit determines the focusing position of the light beams relative to the convergence position.

IPC Classes  ?

• B29C 67/00 - Shaping techniques not covered by groups , or
• B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
• B22F 3/16 - Both compacting and sintering in successive or repeated steps
• B23K 26/342 - Build-up welding
• B33Y 10/00 - Processes of additive manufacturing
• B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
• B33Y 50/00 - Data acquisition or data processing for additive manufacturing

Abstract

The present invention improves shaping accuracy without the use of a finishing process. A three-dimensional lamination shaping device is provided with: a material injection unit that injects material for a three-dimensional laminated shaped object onto a shaping table on which the three-dimensional laminated shaped object is to be shaped; a light beam irradiation unit that irradiates the material with a light beam; a cutting unit that cuts a bead formed after the material irradiated with the light beam has melted and solidified; and a control unit that controls the injection of the material by the material injection unit, the irradiation of the light beam by the light beam irradiation unit, and the cutting of the bead by the cutting unit. The cutting unit cuts an upper surface of the bead by a size smaller than a lamination height and 1/2 or less of a thickness of the bead.

IPC Classes  ?

• B29C 67/00 - Shaping techniques not covered by groups , or
• B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
• B22F 3/16 - Both compacting and sintering in successive or repeated steps
• B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
• B33Y 50/00 - Data acquisition or data processing for additive manufacturing

Abstract

The present invention controls temperature increases in a workpiece (layering base material) to suppress the occurrence of thermal distortions. Provided is a 3D additive manufacturing device that is equipped with the following configuration. The 3D additive manufacturing device is equipped with a material injecting unit for injecting material for a 3D additively manufactured object upon a workpiece whereon the 3D additively manufactured object is manufactured. The 3D additive manufacturing device is also equipped with a light beam irradiating unit for irradiating the injected material with light beams. The 3D additive manufacturing device is further equipped with a jig to which the workpiece is removably attached. In addition, the jig is provided with a channel through which a cooling medium for cooling the workpiece is supplied.

IPC Classes  ?

• B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
• B22F 3/16 - Both compacting and sintering in successive or repeated steps
• B29C 67/00 - Shaping techniques not covered by groups , or
• B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
• B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes

Abstract

The purpose of the present invention is to effectively suppress a reduction in fabrication accuracy based on a difference in thermal expansion coefficient between a three-dimensional additively fabricated object and a fabrication plate. A three-dimensional additive fabrication device is provided with a linear funnel for scattering material of a three-dimensional additively fabricated object. In addition, the three-dimensional additive fabrication device is provided with an electron gun for generating an electron beam. Moreover, the three-dimensional additive fabrication device is provided with a fabrication base material on which the three-dimensional additively fabricated object is to be fabricated. Further, a thermal expansion coefficient of the fabrication base material and a thermal expansion coefficient of the three-dimensional additively fabricated object are the same, or a difference between the thermal expansion coefficients falls within prescribed values.

IPC Classes  ?

• B29C 67/00 - Shaping techniques not covered by groups , or
• B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor

Abstract

The purpose of the present invention is to mould a highly accurate three-dimensional laminate moulded article on the basis of a captured image. This three-dimensional laminate moulding device is provided with: a material ejection means for ejecting a material of a three-dimensional laminate moulded article on a moulding base; a light beam irradiation means for irradiating the ejected material with a light beam; an image capturing means for capturing an image of a molten pool formed by irradiating the ejected material with the light beam; a scanning direction determination means which, on the basis of the change in the position of the moulding base, determines the scanning direction of the light beam with respect to the moulded article; a detection means which detects the molten pool on the basis of the scanning direction and the image captured by the image capturing means; and a moulding control means which, on the basis of the detected molten pool, controls the output of the light beam and/or the scanning speed of the light beam.

IPC Classes  ?

• B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
• B22F 3/16 - Both compacting and sintering in successive or repeated steps
• B29C 67/00 - Shaping techniques not covered by groups , or
• B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
• B33Y 50/00 - Data acquisition or data processing for additive manufacturing

Abstract

The present invention measures the temperature of a melt pool on the basis of an image captured by an infrared camera or the like. Provided is a 3D additive manufacturing device that is equipped with a material injecting unit for injecting material for a 3D additively manufactured object. The 3D additive manufacturing device is also equipped with a light beam irradiating unit for irradiating the injected material with a light beam. The 3D additive manufacturing device is additionally equipped with an imaging unit for capturing an image of a melt pool of the material that is formed by irradiating the injected material with the light beam. The 3D additive manufacturing device is further equipped with a temperature deriving unit for deriving the temperature of the melt pool on the basis of the brightness of the image of the melt pool captured by the imaging unit.

IPC Classes  ?

• B29C 67/00 - Shaping techniques not covered by groups , or
• B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
• B22F 3/16 - Both compacting and sintering in successive or repeated steps
• B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
• B33Y 50/00 - Data acquisition or data processing for additive manufacturing

Abstract

The purpose of the present invention is to measure the quality of a three-dimensional laminate moulded article in real time during moulding of the three-dimensional laminate moulded article. This three-dimensional laminate moulding device is provided with: a material ejection unit for ejecting a material of a three-dimensional laminate moulded article, on a moulding base on which the three-dimensional laminate moulded article is moulded; a light beam irradiation unit for irradiating the ejected material with a light beam; a data acquisition unit which acquires monitoring data for monitoring the moulding state of the three-dimensional laminate moulded article, during moulding of the three-dimensional laminate moulded article; and a moulding quality estimation unit which, on the basis of the monitoring data, estimates the moulding quality of the three-dimensional laminate moulded article.

IPC Classes  ?

• B29C 67/00 - Shaping techniques not covered by groups , or
• B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
• B22F 3/16 - Both compacting and sintering in successive or repeated steps
• B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
• B33Y 50/00 - Data acquisition or data processing for additive manufacturing

Abstract

In order to make a beam branching structure more compact so as to miniaturize the device as a whole, this optical processing head is provided with an optical element group which guides a processing beam from a light source to a processing surface, and a beam branching unit which separates reflected light of the processing beam from the processing surface and an observation beam for observing the state of the processing surface. The beam branching unit is arranged in the beam path of the processing beam and comprises a half-mirror which, between the optical element group and the processing surface, guides the observation beam to an observation optical system.

IPC Classes  ?

• B23K 26/00 - Working by laser beam, e.g. welding, cutting or boring
• B23K 26/21 - Bonding by welding
• B23K 26/34 - Laser welding for purposes other than joining
• B29C 67/00 - Shaping techniques not covered by groups , or
• B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
• B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
• B22F 3/16 - Both compacting and sintering in successive or repeated steps

Abstract

The purpose of the present invention is to prevent deterioration of a formed object. Provided is a nozzle for optical processing, the nozzle comprising: an optical system in which a focal point has been adjusted to a processing point; a first set of mixed fluid discharge tubes that discharge, onto the processing point, a material-purge-gas mixed fluid which comprises a mixture of a purge gas with a powdered processing material; and a second set of purge gas discharge tubes that discharge the purge gas, which has a purging function, toward the first set of mixed fluid discharge tubes, with the discharge tubes of the first set of mixed fluid discharge tubes being respectively associated with the purge gas discharge tubes in the second set of purge gas discharge tubes.

IPC Classes  ?

• B29C 67/00 - Shaping techniques not covered by groups , or
• B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
• B22F 3/16 - Both compacting and sintering in successive or repeated steps
• B23K 26/144 - Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor the fluid stream containing particles, e.g. powder
• B23K 26/21 - Bonding by welding
• B23K 26/34 - Laser welding for purposes other than joining
• B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor

Abstract

In order to increase maneuverability, this beam processing device moves a nozzle head to scan a processing region while irradiating an optical processing beam via a nozzle head onto a processing region having extension in one or more dimensions. The beam processing device comprises: a light source which emits into the atmosphere an optical processing beam towards the nozzle head; a nozzle head which comprises a nozzle which is hollow in the vertical direction and a beam direction changing optical system which receives the beam emitted from the light source and propagated through the atmosphere and changes the direction of propagation of the received beam to the direction of a processing point where processing is currently being performed inside the processing region; and a main scan direction moving mechanism which moves the nozzle head to scan in the primary scanning direction of the processing region.

IPC Classes  ?

• B23K 26/08 - Devices involving relative movement between laser beam and workpiece
• B23K 26/21 - Bonding by welding
• B23K 26/34 - Laser welding for purposes other than joining
• B29C 67/00 - Shaping techniques not covered by groups , or
• B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
• B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
• B22F 3/16 - Both compacting and sintering in successive or repeated steps

Abstract

The system of the present invention is a 3D additive manufacturing system that prevents, in advance, a squeegee blade from becoming caught on a manufactured object obtained by additive manufacturing. This 3D additive manufacturing system is equipped with: an additive manufacturing unit that is provided with a squeegee blade for blanketing a layering material upon the top layer of an additively manufactured object and an irradiating unit for irradiating the layering material, and manufactures each layer of the additively manufactured object as a collection of cell regions; and an additive manufacturing controlling unit that controls the additive manufacturing unit such that the scanning direction in which the irradiating unit irradiates the layering material within a cell region changes during additive manufacturing relative to the movement direction of the squeegee blade.

IPC Classes  ?

• B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
• B22F 3/16 - Both compacting and sintering in successive or repeated steps

Abstract

Provided is a granular material which, when used for mold production therefrom by three-dimensional additive manufacturing, gives a mold that evolves no harmful gas during pouring to diminish gas defects, which are one kind of cast defects. The granular material after the pouring is easy to reutilize. This granular material is a granular material for use in devices for producing molds by three-dimensional additive manufacturing, and contains magnesium sulfate. The amount of the magnesium sulfate contained in the granular material is in the range of 1-10 parts by mass per 100 parts by mass of the granular material. The granular material has a water content of 0.1 mass% or less, except for the crystal water possessed by the magnesium sulfate.

IPC Classes  ?

• B22C 1/18 - Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents of inorganic agents
• B22C 9/02 - Sand moulds or like moulds for shaped castings
• B33Y 10/00 - Processes of additive manufacturing
• B33Y 70/00 - Materials specially adapted for additive manufacturing

Abstract

The objective of the present invention is to prevent excessive evaporation of a powder in a 3D-modeling device wherein an electron beam scans the powder. The 3D-modeling device (100) comprises: a main deflector (103) causing an electron beam (107) to be deflected; an auxiliary deflector (108) causing the electron beam (107) to be deflected, and having a narrower deflection range and a faster scanning speed than the main deflector (103); and control means (112, 113) for controlling the deflection directions and the scanning speeds of the main deflector (103) and the auxiliary deflector (108). The main deflector (103) moves the deflection range of the auxiliary deflector (108). Within the deflection range, the auxiliary deflector (108) scans and irradiates a sub-region multiple times distributed over a predetermined number of times, the sub-region being the region to be scanned and irradiated by the electron beam (107).

IPC Classes  ?

• H01J 37/30 - Electron-beam or ion-beam tubes for localised treatment of objects
• B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
• B22F 3/16 - Both compacting and sintering in successive or repeated steps
• H01J 37/305 - Electron-beam or ion-beam tubes for localised treatment of objects for casting, melting, evaporating, or etching

Abstract

In this three-dimensional laminate molding device, a fixed quantity of a material is sprayed without the material clogging the supply port. The three-dimensional laminate molding device is provided with a material spraying means which sprays the material of the three-dimensional laminate molded article onto a spraying surface and which comprises at least one tapered section having a diameter that decreases from upstream to downstream. The three-dimensional laminate molding device is further provided with at least one vibration ball which is arranged in the tapered section of the material spraying means and vibrates, and with a vibration control means which controls vibration of the vibration ball.

IPC Classes  ?

• B29C 67/00 - Shaping techniques not covered by groups , or
• B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
• B22F 3/16 - Both compacting and sintering in successive or repeated steps
• B33Y 10/00 - Processes of additive manufacturing
• B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
• B33Y 50/00 - Data acquisition or data processing for additive manufacturing
• C03B 7/088 - Outlets, e.g. orifice rings
• F16K 29/00 - Arrangements for movement of valve members other than for opening or closing the valve, e.g. for grinding-in, for preventing sticking

Abstract

In order to cool a two-dimensionally driven recoater with a simple structure, this three-dimensional laminate molding device is provided with at least one material spraying means which sprays the material of the three-dimensional laminate molded article, a temperature measuring means which measures the temperature of the material spraying means, at least one cooling means which, when the material is not being sprayed, is provided in a storage position where the material spraying means is stored and cools the material spraying means, and a control means which controls the material spraying means, wherein the control means moves the spraying means to the storage position and brings the material spraying means and the cooling means into contact.

IPC Classes  ?

• B22F 3/16 - Both compacting and sintering in successive or repeated steps
• B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
• B33Y 10/00 - Processes of additive manufacturing
• B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
• B33Y 50/00 - Data acquisition or data processing for additive manufacturing

Abstract

In order to accurately form a three-dimensional laminate molded article having a graded composition, this three-dimensional laminate molding device, for laminating multiple types of materials and forming a three-dimensional laminate molded article having a graded composition, is provided with a material supply means which supplies a material while scanning, an irradiation means which irradiates the aforementioned material with a beam, and a control means which controls the material supply means, wherein the control means controls the material supply means such that, within a prescribed scanning range of the range in which the material supply means scans and supplies a material, said material supply means supplies, over a prescribed number of times, a prescribed material in the amount necessary for lamination of one layer of the three-dimensional laminate molded article.

IPC Classes  ?

• B22F 3/16 - Both compacting and sintering in successive or repeated steps
• B22F 3/105 - Sintering only by using electric current, laser radiation or plasma

Abstract

In order to form a dissimilar material-bonding three-dimensional additively manufactured article using a three-dimensional additive manufacturing device, this three-dimensional additive manufacturing device is provided with a material supply means which supplies a material of the three-dimensional additively manufactured article onto a manufacturing surface, an irradiation means which irradiates the material with light, and a control means which controls the material supply means, wherein the three-dimensional additively manufactured article is a bonded member obtained by bonding dissimilar materials, and the control means controls the material supply means such that a gradient composition of materials is formed at the boundary region of the dissimilar materials of the three-dimensional additively manufactured article.

IPC Classes  ?

• B22F 3/16 - Both compacting and sintering in successive or repeated steps
• B22F 3/105 - Sintering only by using electric current, laser radiation or plasma

Abstract

In order to manufacture a three-dimensional article using multiple materials and further, in order to replenish the materials during manufacturing without stopping the device, this three-dimensional additive manufacturing device is provided with a manufacturing chamber in which a three-dimensional additively manufactured article is formed, at least two material spraying means which are provided in the manufacturing chamber and which spray the materials of the three-dimensional additively manufactured article, at least two material supply means which supply the materials to the material spraying means, a control means which controls movement of the material spraying means and the material supply means, and a beam irradiation means which irradiates the materials with a beam, wherein the material spraying means and the material supply means form pairs, and the control means controls the movement of the material spraying means and the material supply means such that the material spraying means are supplied with material from the paired material supply means at a prescribed timing.

IPC Classes  ?

• B29C 67/00 - Shaping techniques not covered by groups , or
• B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
• B22F 3/16 - Both compacting and sintering in successive or repeated steps
• B33Y 10/00 - Processes of additive manufacturing
• B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
• B33Y 50/00 - Data acquisition or data processing for additive manufacturing

Abstract

The present invention prevents the overheating of powder and the unintended melting of the powder to improve the accuracy of modeling. This three-dimensional modeling apparatus is provided with: an electron gun which generates an electron beam; at least one first deflector which one-dimensionally or two-dimensionally deflects the electron beam; at least one lens which is disposed between the electron gun and the first deflector and causes the electron beam to focus; a second deflector which is disposed between the electron gun and the first deflector and one-dimensionally or two-dimensionally deflects the electron beam; and a control means which controls the deflection direction and the scanning speed of the first deflector and the second deflector. When the scanning speed of the first deflector is not more than a predetermined speed, the control means controls the deflection direction and the scanning speed of the second deflector.

IPC Classes  ?

• B22F 3/105 - Sintering only by using electric current, laser radiation or plasma

Abstract

In order to improve powder convergence properties without causing irregularities in powder flow flowrate or powder density, this nozzle for machining comprises: an inner cone that encases a light beam path through which light from a light source passes; an outer cone arranged on the outside of the inner cone; a fluid emission flowpath formed in a gap between the inner cone and the outer cone and comprising an emission port opening towards a machining surface; and a fluid guide flowpath having a fluid inlet for fluid. The fluid guide flowpath guides fluid in a direction away from the light beam path, towards the fluid emission flowpath.

IPC Classes  ?

• B23K 26/34 - Laser welding for purposes other than joining
• B23K 26/144 - Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor the fluid stream containing particles, e.g. powder
• B23K 26/21 - Bonding by welding

Abstract

In order to have a configuration whereby a branching location is arranged near a nozzle and flowpath lengths are uniform, this nozzle for machining emits fluid including a machining material, from an emission port, has a light beam path through which light from a light source passes, and includes: a supply pipe supplying the fluid and arranged on the outside of the light beam path through which the light flows; and first and second branched pipes having the same total length and supplying the fluid from the supply pipe towards the emission port. The first branched pipe includes a first curved section having a first shape, on the upstream side of the fluid, and includes a second curved section having a second shape, on the downstream side of the fluid. The second branched pipe includes a third curved section having the first shape, on the upstream side of the fluid, and a fourth curved section having the second shape, on the downstream side of the fluid.

IPC Classes  ?

• B23K 26/34 - Laser welding for purposes other than joining
• B23K 26/144 - Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor the fluid stream containing particles, e.g. powder
• B23K 26/21 - Bonding by welding

Abstract

In order to switch between emitting and stopping a powder flow while maintaining a steady flow and without stopping the steady flow once started, this nozzle for machining comprises: a supply source for fluid including a powder; a first flowpath through which passes the fluid supplied from the supply source; a second flowpath that supplies the fluid to a nozzle emission port; a third flowpath that releases the fluid outside the nozzle; and a switching means that, when the fluid is to be supplied to the emission port, connects the first flowpath and the second flowpath and, when the fluid is not to be supplied to the emission port, connects the first flowpath and the third flowpath.

IPC Classes  ?

• B23K 26/34 - Laser welding for purposes other than joining
• B23K 26/144 - Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor the fluid stream containing particles, e.g. powder
• B23K 26/21 - Bonding by welding

Abstract

The present invention increases the speed with which a three-dimensional additively manufactured object is manufactured by a three-dimensional additive manufacturing device. Provided is a three-dimensional additive manufacturing device in which a three-dimensional additively manufactured object is manufactured by irradiating a powder with an electron beam. The three-dimensional additive manufacturing device is provided with a manufacturing box in which the three-dimensional additively manufactured object is manufactured. The three-dimensional additive manufacturing device is provided with a heating means for preheating that is disposed outside the manufacturing box. In addition, the heating means for preheating is disposed on the lateral surface side of the manufacturing box. Furthermore, the heating means for preheating is disposed so as to surround the manufacturing box from the lateral surfaces thereof.

IPC Classes  ?

• B29C 67/00 - Shaping techniques not covered by groups , or
• B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
• B33Y 10/00 - Processes of additive manufacturing
• B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
• B33Y 50/00 - Data acquisition or data processing for additive manufacturing

Abstract

Powder is supplied to a shaping chamber without interrupting processing to shape a three-dimensional laminated shaped object. A three-dimensional lamination shaping apparatus comprises: a shaping chamber for shaping a three-dimensional laminated shaped object; a powder storage means for storing powder to be conveyed to the shaping chamber; an intermediate powder storage means for temporarily storing the powder, the intermediate powder storage means being provided between the shaping chamber and the powder storage means, connected to the shaping chamber via a first valve, and connected to the powder storage means via a second valve; a valve control means for controlling the opening/closing of the first valve and the second valve; and an atmosphere control means for controlling the atmosphere inside the intermediate powder storage means and the atmosphere inside the shaping chamber.

IPC Classes  ?

• B29C 67/00 - Shaping techniques not covered by groups , or
• B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
• B33Y 10/00 - Processes of additive manufacturing
• B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
• B33Y 50/00 - Data acquisition or data processing for additive manufacturing

Abstract

Through the present invention, the cost of shaping a three-dimensional laminate-shaped object is reduced. The present invention is a three-dimensional laminate shaping device for irradiating a powder with a high-energy beam and shaping a three-dimensional laminate-shaped object, the three-dimensional laminate shaping device provided with a laminate shaping data acquiring means for acquiring laminate shaping data used for laminate shaping of the three-dimensional laminate-shaped object, an attribute information acquiring means for acquiring attribute information of the powder used in laminate shaping of the three-dimensional laminate-shaped object, a model generating means for generating a circuit pattern model for drawing off electrons from the powder charged by irradiation by the high-energy beam on the basis of the laminate shaping data and the attribute information, and a circuit pattern shaping means for shaping the circuit pattern on the basis of the generated circuit pattern model.

IPC Classes  ?

• B29C 67/00 - Shaping techniques not covered by groups , or
• B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
• B22F 3/16 - Both compacting and sintering in successive or repeated steps
• B33Y 10/00 - Processes of additive manufacturing
• B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
• B33Y 50/00 - Data acquisition or data processing for additive manufacturing

Abstract

A line ink jet head washing apparatus for effectively washing an elongate line ink jet head comprises: a wiper fixation part that extends in the length direction of the line ink jet head to be washed, has a prescribed width in a vertical direction, and has a washing wiper fixed to an upper end thereof; a washing liquid bath that has a prescribed volume to enclose the wiper fixation part and has an opening in an upper surface thereof; and driving means for moving the wiper fixation part upward and downward between washing liquid inside the washing liquid bath and the line ink jet head to be washed, positioned over the opening.

IPC Classes  ?

• B41J 2/165 - Prevention of nozzle clogging, e.g. cleaning, capping or moistening for nozzles

Abstract

The present description discloses an optical machining head (100) which is provided with a light guide unit (101) that guides a machining beam (111) to a surface to be machined (120). The light guide unit (101) is configured to also guide an inspection beam (112) to the surface to be machined (120), said inspection beam having a wavelength different from that of the machining beam (111). The optical machining head (100) is also provided with an inspection unit (102) that inspects the state of the surface to be machined (120) on the basis of reflection light (113) of the inspection beam (112), said reflection beam having been reflected by the surface to be machined (120). The state of the surface to be machined (120) can be simply inspected by means of the optical machining head (100), even during a time when the optical machining is performed.

IPC Classes  ?

• B23K 26/34 - Laser welding for purposes other than joining
• B23K 26/00 - Working by laser beam, e.g. welding, cutting or boring
• B23K 26/21 - Bonding by welding
• B29C 67/00 - Shaping techniques not covered by groups , or