Disclosed is a sensor arrangement, manufacturing apparatus, and measurement method for an additive manufacture apparatus The sensor arrangement includes a sensor module which is configured to detect oxygen molecules in a gas sample permeating into the sensor module and to generate an electrical sensor signal based on the quantity of the oxygen molecules, a control module which is configured, by means of a comparison of the sensor signal or a variable derived from the sensor signal with a specified threshold value, to determine whether the sensor module is measuring outside a predetermined action range and if this is the case, to generate a control signal which is configured to initiate a predetermined countermeasure which is intended to modify the conditions in the apparatus in a manner such that the sensor module is again measuring in the action range.
G01N 27/12 - Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon absorption of a fluidInvestigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon reaction with a fluid
B22F 10/322 - Process control of the atmosphere, e.g. composition or pressure in a building chamber of the gas flow, e.g. rate or direction
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
G01N 33/00 - Investigating or analysing materials by specific methods not covered by groups
2.
DYNAMIC ALLOCATION OF OBJECTS TO BE MANUFACTURED TO ADDITIVE MANUFACTURING DEVICES
A computer-aided method of controlling a plurality of additive manufacturing apparatuses. The method includes receiving first computer-based data models each of which geometrically describes a first object to be manufactured, receiving status data and/or property parameters of the plurality of additive manufacturing apparatuses, to each of which at least one second computer-based data model of a second object to be manufactured has been assigned, transmitting a first computer-based data model to a target manufacturing apparatus among the plurality of additive manufacturing apparatuses for a manufacture of the first object, where the target manufacturing apparatus is selected on the basis of a rule-based automatic decision in which the received status data and/or property parameters are taken into account.
Disclosed is a method for controlling a manufacturing process for additive manufacturing. In the method, a process gas loaded with contamination is discharged from a process space through a gas pipe, filtered and returned to the process space. The method further includes detecting a number of measuring values by a contamination measuring unit, each measuring value allowing an inference of a degree of contamination of the process gas flowing through the gas pipe prevailing at the time of detection, evaluating the number of measuring values, and controlling the device and/or an output device data-technically connected to the manufacturing process in dependence on the evaluation of the number of measuring values. Further disclosed is a corresponding system and a manufacturing device.
Disclosed is a method for generating control data for an additive manufacturing device. The method includes obtaining or generating layer information selecting or generating a first filling region having a filling pattern of scan vectors parallel to one another with a predefined vector spacing, creating a second filling region having a filling pattern of scan vectors parallel to one another, wherein the scan vectors of the second filling region are substantially parallel to the scan vectors of the first filling region and arranged offset relative thereto, and generating control data in such a way that the device for additive manufacturing can generate component layers corresponding to the solidification regions using this control data.
B22F 10/28 - Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
B22F 10/366 - Scanning parameters, e.g. hatch distance or scanning strategy
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
The invention relates to a method for setting the radiation intensity of a beam in a manufacturing process for additively manufacturing a component. During the manufacturing process, components are produced in that a construction material is deposited layer by layer, and the construction material is solidified in each deposited layer by supplying radiation energy, by means of a beam, to the points of the layer which are associated with the cross-section of the component in said layer in that the beam is moved along a plurality of trajectories in the cross-section of the component by means of a beam moving device, preferably a controllable beam moving device, in order to melt the construction material at the points which are associated with the cross-section of the component, wherein the radiation intensity of the beam is set within a region of incidence of the beam on the construction material using a beam profile setting device. The method is characterized in that the radiation intensity of the beam is set in such a way that the distribution of the radiation intensity in the region of incidence of the beam on the construction material changes by at least 1% per µm at at least one point.
Disclosed is a flow modification element including a gas guide element extending from a gas inlet side to a gas outlet side and a plurality of channels. The channels are spaced apart such that the number of second channels is arranged closer to the build area in a direction perpendicular to the build area than the number of first channels. A total opening cross-sectional area of the number of first channels on the gas outlet side differs from a total opening cross-sectional area of the number of second channels on the gas outlet side, and the total opening cross-sectional areas of the number of first channels and of the number of second channels on the gas inlet sides are substantially equal. Or, at least a partial gas flow introduced into the process chamber from the number of first channels is directed towards a plane of the build area.
B28B 1/00 - Producing shaped articles from the material
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
Disclosed is a method for regulating an irradiation in a manufacturing process for the additive manufacturing of objects. The method involves identifying shape-regions in object layers to be solidified and categorizing them into reference-regions and correction-regions. Target-temperature maps are created to specify desired heat distribution for the correction-regions. Reference-regions are solidified while recording spatial temperature data, which is used to generate correction factor modules. These modules contain spatially resolved correction factors for irradiation values and are assigned to the corresponding correction-regions. The correction-regions are solidified using their respective correction factor modules, ensuring precise heat distribution and improved solidification accuracy.
Disclosed are powder mixtures for use in additive manufacture, which comprise three particle fractions A, B and C with different median particle sizes, wherein the median particle sizes relate to each other as 0.2 to 0.5/1/1.2 to 2. These powder mixtures have higher apparent density and/or conditioned bulk density compared to conventional additive manufacture powders and thus allow for faster processing with less defects. Further disclosed is technology that relates to methods for the preparation of respective powder mixtures, methods and devices for the preparation of three-dimensional objects from such powder mixtures and three-dimensional objects, which have been prepared accordingly, as well as the use of the powder mixtures for reducing the amount of defects in additive manufacturing processes.
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
Disclosed is a calibration method for a layer-wise additive manufacturing apparatus. The method includes a control device, a layer application device, and an energy supply device. The energy supply device can be moved over the building field and a predefined target direction is specified for the energy supply device for this movement. The energy supply device includes a number of radiation emitters which are arranged along an arrangement direction transverse to the predefined target direction The control device specifies for the radiation emitters emission locations over the building field at which radiation is to be emitted. Depending on the positions, it is determined whether a deviation of a movement direction from the predefined target direction occurs in the movement of the energy supply device, and the control device is caused to specify other emission locations for radiation emitters depending on a determined deviation.
The invention concerns a sensor arrangement (9) for an apparatus (1) for the additive manufacture of a component (2) in a manufacturing process in which build material (13), preferably comprising a metal powder, is consolidated on a construction area (8) in a processing area (3) by means of irradiation of the build material (13) with at least one energy beam (AL), the sensor arrangement (9) comprising:
a sensor module (90) which is configured to detect oxygen molecules in a gas sample (P) permeating into the sensor module (90) and to generate an electrical sensor signal (S) based on the quantity of the oxygen molecules,
a selective filter element (F) configured to filter the gas sample (P) so that at least hydrogen molecules and/or hydrogen ions and/or water molecules and/or hydroxide ions are filtered out of the gas sample (P).
The invention concerns a sensor arrangement (9) for an apparatus (1) for the additive manufacture of a component (2) in a manufacturing process in which build material (13), preferably comprising a metal powder, is consolidated on a construction area (8) in a processing area (3) by means of irradiation of the build material (13) with at least one energy beam (AL), the sensor arrangement (9) comprising:
a sensor module (90) which is configured to detect oxygen molecules in a gas sample (P) permeating into the sensor module (90) and to generate an electrical sensor signal (S) based on the quantity of the oxygen molecules,
a selective filter element (F) configured to filter the gas sample (P) so that at least hydrogen molecules and/or hydrogen ions and/or water molecules and/or hydroxide ions are filtered out of the gas sample (P).
The invention further concerns a manufacturing apparatus as well as a measurement method with such a sensor arrangement.
Disclosed is a method for modifying surface-based image data of a three-dimensional geometric model suitable for the additive manufacturing of a component. The method includes creating a number of voxel grids, and for each, determining position information and assigning the position information to the respective voxel, assigning an individual index to at least some of the surface segments of the image data, and assigning the index of the nearest surface segment to the respective voxel. Additionally, or alternatively to the above, the method can include determining a distance of the respective voxel to the surface of the model and assigning corresponding distance information to the respective voxel and outputting the voxels with the information assigned to them.
Disclosed is a method for generating a control data set for an energy input device of an additive manufacturing device. The method includes accessing computer-based model data of an object cross-section of the object to be manufactured, and generating a data model of a region of a building material layer to be solidified, where the region to be solidified is divided into a plurality of subregions. At least a first subregion and a second subregion adjoin each other at a boundary, and locations in the first subregion are scanned at a time coordinated with locations in the second subregion Further, the control data set for the energy input device is generated taking into account the data model generated previously.
B29C 64/393 - 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 64/268 - Arrangements for irradiation using laser beamsArrangements for irradiation using electron beams [EB]
B29K 105/00 - Condition, form or state of moulded material
Disclosed is a steel powder for additive manufacture of three-dimensional objects and in particular for the manufacture hot and cold work tools, wherein the steel combines the properties of carbon hardening and maraging steel. Such steels have been found to be readily processable and provide crack free objects with low distortion. Further disclosed is technology that relates to methods for the preparation of corresponding steel powders, methods for the manufacture of three-dimensional objects from corresponding steel powders and three-dimensional objects prepared by such methods, and the use of a corresponding steel powder for the preparation of die casting or injection moulding tools and for suppressing the formation of cracks in the preparation of three-dimensional objects from steel.
Disclosed is a method and a device for determining property values of a segment of a manufacturing product made by an additive manufacturing process. In the process, a parameter set is determined which includes a defined group of process parameter values for the construction process of a layer of the segment. At least one process parameter value comprises a layer scanning direction arrangement. Furthermore, a segment scanning direction distribution is determined for the construction process of the segment. A macro property value of the segment is determined based on the parameter set and the segment scanning direction distribution. The invention additionally relates to a method for testing a manufacturing product, to a control data generation device, to a control device for a production device, and to a production device. The invention also relates to a method for setting up a basic property database and to a property database system.
This invention relates to a method for generating control data for a device (1) for additively manufacturing a component (2), said method comprising the steps of: - obtaining or generating layer information (SI) comprising a number of layer structures (S) of the component (2), - subdividing at least one layer structure (S) into a plurality of partial structures (T), which together form a number of ring shapes (R) which enclose a dot, wherein adjacent partial structures (T) touch one another such that they form a closed area, - individually assigning a hatch vector (HV) to each partial structure, wherein the hatch vectors (HV) are selected such that they lie on the plane of the layer structure (S) and the orientations of hatch vectors (HV) of partial structures (T) which are adjacent to one another relative to a common coordinates system differ, - generating control data (PS) such that the device (1) for additive manufacturing can use said control data (PS) to generate a fill pattern (F) with hatchings of hatch lines along the respective hatch vectors (HV), said hatch lines being substantially perpendicular to one another. The invention also relates to corresponding control data and to a corresponding control data generation device, to a control unit for an additive manufacturing device, to a corresponding additive manufacturing device and to a manufacturing method.
The present application is concerned with a powder mixture for additive manufacturing processes, wherein the powder mixture comprises a duplex steel powder component and an austenitic steel powder component, wherein the powder mixture comprises Cr in an amount of at least 21.3% by weight. The addition of the austenitic steel powder component increases the ductility of the duplex steel and reduces internal stresses which result in cracking in objects build with duplex steel. The present application is further concerned with methods for the preparation of such powder mixtures, methods and devices for the preparation of three-dimensional objects from the powder mixtures and three-dimensional objects, which have been prepared accordingly, as well as the use of an austenitic steel powder to suppress the formation of cracks in duplex steel three-dimensional objects.
The invention relates to a method for generating control data for additively manufacturing a component (2), having the steps of: - providing a component data set (D) comprising data on the three-dimensional shape of a component (2) and data on a three-dimensional structural region (S) of the component (2) which is to be provided with a structure (T) in a normal operation, - providing a structural data set comprising at least one piece of data for constructing a unit cell (E) of a periodic structure (T), - specifying a grid (G) consisting of three-dimensional grid cells (g) in the structural region (S), wherein the unit cell (E) can be spatially arranged in the grid cells (g), - fitting the unit cell (E) in each grid cell (g) such that the shape of the unit cell (E) corresponds to the shape of the respective grid cell (g) and filling the grid cells (g) with a respective fitted unit cell (E) in order to form a structure (T), - generating control data (PS) for constructing a component (2) in layers, said component having a structural region (S) structured by means of said structure (T), and - outputting the control data (PS) to a device (1) for additively manufacturing a component (2). The invention additionally relates to corresponding control data, to a corresponding control data generating device, to a controller for a device for an additive manufacturing process, to a corresponding device for an additive manufacturing process, and to a manufacturing method.
Disclosed is a method for the post-treatment of particles carried along in a process gas of a device for the generative manufacturing of three-dimensional objects, wherein the particles are conducted to a filter chamber. An oxidant is added to the particles and that an oxidation reaction of the particles with the oxidant is initiated.
The present invention concerns a composition comprising at least one polymer, wherein the polymer solidifies from a molten material in a substantially amorphous or completely amorphous form. The present invention further concerns a process for the production of the composition in accordance with the invention, as well as a structural component comprising a composition in accordance with the invention and the use of the composition in accordance with the invention.
C09D 179/08 - PolyimidesPolyester-imidesPolyamide-imidesPolyamide acids or similar polyimide precursors
B29B 9/12 - Making granules characterised by structure or composition
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 70/00 - Materials specially adapted for additive manufacturing
C08J 3/09 - Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in organic liquids
C08J 3/11 - Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in organic liquids from solid polymers
C08J 3/14 - Powdering or granulating by precipitation from solutions
Disclosed is a filter device for an additive manufacturing device for purifying a process gas of the additive manufacturing device, where the filter device for purifying a process gas during operation has at least one permanent filter, where the permanent filter has at least one coating as well as a method for manufacturing such a filter device. Further disclosed is an additive manufacturing device as well as a method for additive manufacturing.
B01D 39/10 - Filter screens essentially made of metal
B01D 46/54 - Particle separators, e.g. dust precipitators, using ultra-fine filter sheets or diaphragms
B01D 46/71 - Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter with pressurised gas, e.g. pulsed air
B33Y 40/00 - Auxiliary operations or equipment, e.g. for material handling
01 - Chemical and biological materials for industrial, scientific and agricultural use
06 - Common metals and ores; objects made of metal
07 - Machines and machine tools
41 - Education, entertainment, sporting and cultural services
42 - Scientific, technological and industrial services, research and design
Goods & Services
Unprocessed plastics, in particular in liquid, granular
and/or powder form; chemical substances for producing foam;
chemicals in the form of foam boosters; pastes containing
metalliferous glass [chemical products] for use in industry;
parts and fittings for all the aforesaid goods, included in
this class. Common metals and their alloys; metal ores; metal hardware;
metalliferous parts being semi-finished products; metal
containers for storage and transport; metals in powder form;
powder of or with metal for sintering; alloys of metal;
parts and fittings for all the aforesaid goods, included in
this class. Manufacturing machines; machine tools and power-operated
tools; machines for use in generative manufacture [additive
manufacturing]; parts and fittings for all the aforesaid
goods, included in this class. Education; training; entertainment services; sporting and
cultural activities; training and further training
consultancy; coaching; conducting and organizing of training
seminars, workshops, trainings, training courses; arranging
and organization of demonstrations for educational purposes;
training, in particular training in connection with additive
manufacturing [generative manufacturing processes];
arranging of lectures; provision and conducting
correspondence courses; provision of electronic
publications, also via the internet or a global network as
well as in electronic or computerized form; rental and
leasing of objects in connection with providing the
aforesaid services, included in this class; consultancy and
information in relation to the aforesaid services, included
in this class. Scientific and technological services and research; design
services; industrial analysis and research services; civil
engineering; design and development of computer hardware;
technological consultancy; mechanical engineering services
and/or engineering services and/or chemistry services and/or
mechanics services; design, development, programming and
implementation of software; consultancy on the use of
software; software as a service [SaaS] and rental of
software; data mining; services of a computer scientist
and/or mathematician; quality control; support and
maintenance of software; rental and leasing of objects in
connection with providing the aforesaid services, included
in this class; consultancy and information in relation to
the aforesaid services, included in this class.
22.
GENERATING OPTIMIZED PROCESS VARIABLE VALUES AND CONTROL DATA FOR AN ADDITIVE MANUFACTURING PROCESS
Disclosed is a method and device for generating optimized process variable values for an additive manufacturing process of a manufactured product. Requirement data of the manufactured product is provided and includes at least geometric data of the manufactured product. A region is then defined which encompasses the manufactured product. The manufactured product includes at least one segment. An optimization process is then carried out for the at least one segment in the defined region to select at least one optimal parameter set, which includes a defined group of process parameter values, from candidate parameter sets, to ascertain an optimized segment scanning direction distribution using a defined target function and the requirement data. The optimal parameter set and the optimized segment scanning direction distribution are provided in the form of optimized process variable values.
Disclosed is a method for treating objects produced by an additive manufacturing process which have at least one surface formed from a polymer with a glass transition temperature of at least 120° C., and preferably are formed from such a polymer, and in which the surface of the object is brought into contact with an organic or inorganic solvent. By such a treatment, the surface of the objects can be smoothed and relevant mechanical properties can be improved. Further disclosed are three-dimensional objects produced according to such a method and to the use of organic or inorganic solvents to reduce the surface roughness and/or to improve the mechanical properties and/or the chemical resistance.
Disclosed is a passivation device for passivating a filter residue occurring in a filter device. The passivation device includes an outlet region for receiving filter residue from the filter device, a fluid supply for supplying a fluid flow of a fluid, which can include a passivating agent, into the outlet region, a fluid discharge for discharging the fluid flow and the filter residue from the outlet region and an energy supply device for applying energy to the fluid flow and/or the filter residue. The passivation device is configured and/or controllable to effect a chemical reaction between the filter residue and the passivating agent at least partially in the entrained flow. Furthermore, the passivation device optionally includes a passivating agent supply for adding a passivating agent to the fluid flow.
01 - Chemical and biological materials for industrial, scientific and agricultural use
06 - Common metals and ores; objects made of metal
07 - Machines and machine tools
41 - Education, entertainment, sporting and cultural services
42 - Scientific, technological and industrial services, research and design
Goods & Services
Unprocessed plastics, in particular in liquid, granular
and/or powder form; chemical substances for producing foam;
chemicals in the form of foam boosters; pastes containing
metalliferous glass [chemical products] for use in industry;
parts and fittings for all the aforesaid goods, included in
this class. Common metals and their alloys; metal ores; metal hardware;
metalliferous parts being semi-finished products; metal
containers for storage and transport; metals in powder form;
powder of or with metal for sintering; alloys of metal;
parts and fittings for all the aforesaid goods, included in
this class. Manufacturing machines; machine tools and power-operated
tools; machines for use in generative manufacture [additive
manufacturing]; parts and fittings for all the aforesaid
goods, included in this class. Education; training; entertainment services; sporting and
cultural activities; training and further training
consultancy; coaching; conducting and organizing of training
seminars, workshops, trainings, training courses; arranging
and organization of demonstrations for educational purposes;
training, in particular training in connection with additive
manufacturing [generative manufacturing processes];
arranging of lectures; provision and conducting
correspondence courses; provision of electronic
publications, also via the internet or a global network as
well as in electronic or computerized form; rental and
leasing of objects in connection with providing the
aforesaid services, included in this class; consultancy and
information in relation to the aforesaid services, included
in this class. Scientific and technological services and research; design
services; industrial analysis and research services; civil
engineering; design and development of computer hardware;
technological consultancy; mechanical engineering services
and/or engineering services and/or chemistry services and/or
mechanics services; design, development, programming and
implementation of software; consultancy on the use of
software; software as a service [SaaS] and rental of
software; data mining; services of a computer scientist
and/or mathematician; quality control; support and
maintenance of software; rental and leasing of objects in
connection with providing the aforesaid services, included
in this class; consultancy and information in relation to
the aforesaid services, included in this class.
A method for providing control data for an additive manufacturing device (1) involves: a first step (S1) of accessing model data of a number of partial cross sections of the object to be manufactured, each of which comprises a subarea of an object cross section and a portion of the periphery of this object cross section, a second step (S2) of creating a data model of the number of partial cross sections, wherein the data model specifies a scanning of the locations of the number of partial cross sections with a number of beams (22) along a plurality of trajectories (54) in the layer plane (7), wherein at least one of the partial cross sections has a set sequence for scanning the trajectories such that first a starting trajectory is scanned, wherein at least one point of the starting trajectory is at such a distance from the periphery of the object cross section that at least one further trajectory lies between the at least one point and the periphery, and a third step (S3), in which control data for generating a set of control data are provided.
The invention relates to a conveyor device (40) for an apparatus (1) for the additive manufacture of at least one component (2) from a powder construction material (13, 13', 15) by means of selective at least partial solidification of the construction material (13). For conveying construction material (13') in the apparatus (1), the conveyor device (40) has a chain-driven conveyor (50), preferably a chain conveyor (50), with at least one toothed wheel (51). At least one inter-tooth region (52) between two adjacent teeth (57, 57') of the toothed wheel (51) comprises an escape space (54, 54') for the powder construction material (13'). The invention also relates to an apparatus (1) for the additive manufacture of at least one component (2), and to a method for the additive manufacture of at least one component (2).
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 10/28 - Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
B22F 12/50 - Means for feeding of material, e.g. heads
B33Y 30/00 - Apparatus for additive manufacturingDetails thereof or accessories therefor
B33Y 40/00 - Auxiliary operations or equipment, e.g. for material handling
B65G 17/00 - Conveyors having an endless traction element, e.g. a chain, transmitting movement to a continuous or substantially-continuous load-carrying surface or to a series of individual load-carriersEndless-chain conveyors in which the chains form the load-carrying surface
B65G 17/30 - Conveyors having an endless traction element, e.g. a chain, transmitting movement to a continuous or substantially-continuous load-carrying surface or to a series of individual load-carriersEndless-chain conveyors in which the chains form the load-carrying surface DetailsAuxiliary devices
B65G 19/10 - Conveyors comprising an impeller or a series of impellers carried by an endless traction element and arranged to move articles or materials over a supporting surface or underlying material, e.g. endless scraper conveyors for moving bulk material in open troughs or channels the impellers being scrapers similar in size and shape to the cross-section of the trough or channel and attached to a pair of belts, ropes, or chains
Disclosed is an additive manufacturing apparatus. The apparatus includes a residual powder chamber with a receiving opening to receive excess powdered material. A region between the construction area and the receiving opening has at least one flow restricting device. A region between a construction area of the apparatus and the residual powder chamber and/or at least a part of the residual powder chamber is preferably covered by at least one cover element leaving the receiving opening free. The surface of the cover element least one flow restricting device for the powdered construction material.
B29C 64/307 - Handling of material to be used in 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
A method of passivating a filter residue that arises in a filter apparatus (40) includes the following steps: – feeding a filter residue that has been cleaned off a filter element (42) in the filter apparatus (40) to a collecting region (71, 71a, 71b), – compacting the filter residue in the collecting region (71, 71a, 71b), – feeding the compacted filter residue to an oxidation region (290) in an oxidation unit (200, 210, 230) and oxidizing the compacted filter residue in the oxidation unit (200, 210, 230).
B01D 46/48 - Removing dust other than cleaning filters
B01D 46/71 - Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter with pressurised gas, e.g. pulsed air
B22F 1/145 - Chemical treatment, e.g. passivation or decarburisation
What are described are a mixture comprising at least one polymer-based material in powder form and at least one halogen-free flame retardant in powder form, wherein the flame retardant in powder form has a particle size distribution with a d50 in the range from 20 to 80 µm, preferably of at least 30 µm and/or at most 60 µm, and a d10 of greater than 10 µm, preferably greater than 15 µm, even more preferably greater than 20 µm, a method for producing such a mixture, a mixture obtainable by said method, the use of such a mixture as build material for the additive manufacturing of a three-dimensional object, a three-dimensional object produced by solidifying said mixture, and a method and a system for production of such a three-dimensional object.
B22F 12/00 - Apparatus or devices specially adapted for additive manufacturingAuxiliary means for additive manufacturingCombinations of additive manufacturing apparatus or devices with other processing apparatus or devices
B29C 64/00 - 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
The invention relates to a production method for additively manufacturing at least one component of an electrochemical device, preferably an electrochemical energy store, in particular a storage battery, preferably a lithium ion storage battery, and/or an electrolytic cell, at least partially by applying a build material, preferably a powdered build material, layer by layer and subsequently solidifying, in particular selectively solidifying, said build material, the production method comprising the steps of: - providing a support device in the form of a support belt, in particular comprising or formed by a support foil, preferably a metal support foil, - applying at least one layer of the build material to the support belt, - feeding the build material into an irradiation region (19) of at least one first, preferably stationary, irradiation unit (10) and at least partially solidifying, in particularly selectively solidifying, the build material on the support belt by means of the at least one first irradiation unit.
The invention relates to a method and a device (60) for generating optimized process variable values (PGO) for an additive construction process of a manufacturing product (2, 2', 2''). For this purpose, request data (AD) of the manufacturing product (2, 2', 2'') is provided, and an optimization method is then carried out in order to ascertain the optimized process variable values (PGO) while taking into consideration the request data (AD), wherein at least one optimized scan direction distribution (SSV) for at least one region of the manufacturing product (2, 2', 2'') is ascertained as an optimized process variable value (PGO) using an AI-based optimization unit (NN, NPS, NSV, NNW, KNSP, KNWS). The optimized process variable values (PGO) are then provided. The invention additionally relates to a method and a control data generating device (54, 54') for generating control data (BSD, PSD), to a method for generating an AI-based optimization unit (KNSP, KNWS), to a control method, to a controller (50) for a production device (1) for an additive manufacturing process, and to a corresponding production device (1).
The present application is concerned with aluminium alloys in powder form, which comprise up to 8 wt.-% Ni and up to 4 wt.-% Fe. Corresponding alloys provide for a beneficial combination of high conductivity, moderate strength, good wear resistance and good stability at temperatures of up to 250°C. The powder has a particle size d50 of from 2 to 90 μm, which makes the powder particularly suitable for powder bed based additive manufacturing processes. The present application is further concerned with processes for the production of such aluminium alloy powders, methods for the production of three-dimensional objects using corresponding aluminium alloy powders and three-dimensional objects prepared accordingly, and combinations of devices for the production of such three-dimensional objects and corresponding aluminium alloy powders.
B22F 1/05 - Metallic powder characterised by the size or surface area of the particles
B22F 9/08 - Making metallic powder or suspensions thereofApparatus 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
B22F 10/25 - Direct deposition of metal particles, e.g. direct metal deposition [DMD] or laser engineered net shaping [LENS]
B22F 3/24 - After-treatment of workpieces or articles
B22F 9/04 - Making metallic powder or suspensions thereofApparatus or devices specially adapted therefor using physical processes starting from solid material, e.g. by crushing, grinding or milling
C22F 1/04 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
The invention describes a laser printing system (100) for illuminating an object moving relative to a laser module of the laser printing system (100) in a working plane (180), the laser module comprising at least two laser arrays of semiconductor lasers and at least one optical element, wherein the optical element is adapted to image laser light emitted by the laser arrays, such that laser light of semiconductor lasers of one laser array is imaged to one pixel in the working plane of the laser printing system, and wherein the laser printing system is a 3D printing system for additive manufacturing and wherein two, three, four or a multitude of laser modules (201, 202) are provided, which are arranged in columns (c1, c2) perpendicular to a direction of movement (250) of the object in the working plane (180), and wherein the columns are staggered with respect to each other such that a first laser module (201) of a first column of laser modules (c1) is adapted to illuminate a first area (y1) of the object and a second laser module (202) of a second column (c2) of laser modules is adapted to illuminate a second area (y2) of the object, wherein the first area (y1) is adjacent to the second area (y2) such that continuous illumination of the object is enabled.
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 12/00 - Apparatus or devices specially adapted for additive manufacturingAuxiliary means for additive manufacturingCombinations of additive manufacturing apparatus or devices with other processing apparatus or devices
B29C 64/268 - Arrangements for irradiation using laser beamsArrangements 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]
B29C 64/282 - Arrangements for irradiation using multiple radiation means, e.g. micromirrors or multiple light-emitting diodes [LED] of the same type, e.g. using different energy levels
B29C 64/386 - Data acquisition or data processing for additive manufacturing
B33Y 30/00 - Apparatus for additive manufacturingDetails thereof or accessories therefor
B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
B41J 2/45 - Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of radiation to a printing material or impression-transfer material using arrays of radiation sources using light-emitting diode arrays
B41J 2/455 - Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of radiation to a printing material or impression-transfer material using arrays of radiation sources using laser arrays
01 - Chemical and biological materials for industrial, scientific and agricultural use
06 - Common metals and ores; objects made of metal
07 - Machines and machine tools
41 - Education, entertainment, sporting and cultural services
42 - Scientific, technological and industrial services, research and design
Goods & Services
Unprocessed plastics, in particular in liquid, granular or powder form; chemical substances for producing foam; chemicals in the form of foam boosters; thermal pastes containing metalliferous glass for use in industry Common metals and their alloys; metal ores; metal containers for storage and transport of goods; common metals in powder form; powder of common metal powder and common metal for further use in sintering in manufacturing; alloys of common metal Manufacturing machines for use in the manufacture of additive manufactured objects; machines for use in generative manufacture of additive manufactured objects; structural parts for all the aforesaid goods Educational services, namely, workshops, seminars in the field of additive manufacturing; training services in the field of additive manufacturing; training and training consultancy in the field of additive manufacturing; arranging and organization of educational demonstrations in the field of additive manufacturing for educational purposes; training, in particular training in connection with additive manufacturing; providing and conducting education in the field of additive manufacturing rendered through correspondence courses; provision of electronic publications, via the internet or a global network as well as in non-downloadable electronic or computerized form in the field of additive manufacturing; educational and entertainment consultancy and information in relation to the aforesaid services Scientific and technological services, namely, research and design services in the field of additive manufacturing; industrial scientific analysis and research services in the field of industrial engineering; civil engineering; design and development of computer hardware; technological consultancy in the field of additive manufacturing; mechanical engineering services; engineering services; chemistry services; mechanics services;chemical engineering services; design, development, programming and implementation of computer software; computer software consultancy regarding the use of software; quality control for others; technical support services, namely, troubleshooting of computer software problems and maintenance of software; scientific research and technological consultancy and information in relation to the field of additive manufacturing
01 - Chemical and biological materials for industrial, scientific and agricultural use
06 - Common metals and ores; objects made of metal
07 - Machines and machine tools
41 - Education, entertainment, sporting and cultural services
42 - Scientific, technological and industrial services, research and design
Goods & Services
Unprocessed plastics, in particular in liquid, granular or powder form; chemical substances for producing foam; chemicals in the form of foam boosters; thermal pastes containing metalliferous glass for use in industry. Common metals and their alloys; metal ores; metal containers for storage and transport of goods; common metals in powder form; powder of common metal powder and common metal for further use in sintering in manufacturing; alloys of common metal. Manufacturing machines for use in the manufacture of additive manufactured objects; machines for use in generative manufacture of additive manufactured objects; structural parts for all the aforesaid goods. Educational services, namely, workshops, seminars in the field of additive manufacturing; training services in the field of additive manufacturing; training and training consultancy in the field of additive manufacturing; arranging and organization of educational demonstrations in the field of additive manufacturing for educational purposes; training, in particular training in connection with additive manufacturing; providing and conducting education in the field of additive manufacturing rendered through correspondence courses; provision of electronic publications, via the internet or a global network as well as in non-downloadable electronic or computerized form in the field of additive manufacturing; educational and entertainment consultancy and information in relation to the aforesaid services. Scientific and technological services, namely, research and design services in the field of additive manufacturing; industrial scientific analysis and research services in the field of industrial engineering; civil engineering; design and development of computer hardware; technological consultancy in the field of additive manufacturing; mechanical engineering services; engineering services; chemistry services; mechanics services; chemical engineering services; design, development, programming and implementation of computer software; computer software consultancy regarding the use of software; quality control for others; technical support services, namely, troubleshooting of computer software problems and maintenance of software; scientific research and technological consultancy and information in relation to the field of additive manufacturing.
The invention concerns a method for the removal of a part (41, 55) of a particle collecting device (40, 41, 42, 55), which part is loaded with at least highly flammable particles (51). The part (41, 55) is removed from a process gas cleaning device (100) of an additive manufacturing device (1) by means of the following steps. An inert gas (50, 250) which substantially encloses the particles (51) is provided. The part (41, 55) of the particle collecting device (40, 41, 42, 55), is removed from the process gas cleaning device (100), wherein the particles (51) remain enclosed in the inert gas (50, 250).
Disclosed is a specific Ni-base superalloy, preferably in powder form, comprising at least 7.00 to 24.00 wt.-% Cr, 5.00 to 20.00 wt.-% Co, 0.00 to 5.00 wt.-% Fe, 0.00 to 10.00 wt.-% W, 0.00 to 3.00 wt.-% Nb, 0.00 to 10.00 wt.-% Mo, 0.00 to 6.00 wt.-% Ti, 0.50 to 6.00 wt.-% Al, 0.00 to 9.00 wt.-% Ta, 0.00 to 0.20 wt.-% C, 0.00 to 0.20 wt.-% Zr, 0.00 to 2.00 wt.-% Hf, 0.00 to 0.50 Si wt.-% and 0.00 to 0.20 wt.-% B, wherein the balance is Ni and unavoidable impurities. Further disclosed are processes for the manufacture of such Ni-base superalloy powders, processes and devices for the manufacture of three-dimensional objects, three-dimensional objects prepared by such processes and devices and the use of such a Ni-base superalloy in powder form for minimizing and/or suppressing microcrack formation in a three-dimensional object and/or for providing improved ductility and rupture life in creep conditions.
B22F 9/08 - Making metallic powder or suspensions thereofApparatus 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
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
C22C 1/04 - Making non-ferrous alloys by powder metallurgy
C22C 19/05 - Alloys based on nickel or cobalt based on nickel with chromium
An additive manufacturing method comprises: - applying a layer of building material on a support or a layer of building material that has been previously selectively solidified, - selectively solidifying the layer of building material by supplying laser radiation to positions in the layer that are assigned to a cross-section of the object in this layer in that these positions are scanned with a laser beam along a number of trajectories in order to melt the building material along these trajectories, and - repeating the two steps of applying a layer and solidifying said layer until the cross- sections of the object that are to be manufactured by additive manufacturing have all been selectively solidified. The method is characterized in that pulsed laser radiation is used for melting the building material, wherein the laser beam is moved across the layer of building material with a speed exceeding 1000 mm/s.
B22F 10/36 - Process control of energy beam parameters
B22F 10/366 - Scanning parameters, e.g. hatch distance or scanning strategy
B22F 12/43 - Radiation means characterised by the type, e.g. laser or electron beam pulsedRadiation means characterised by the type, e.g. laser or electron beam frequency modulated
The invention relates to a method for generating control data (PS) for a device (1) for additively manufacturing a component (2) in a manufacturing process, in which method build-up material (13), preferably comprising a metal powder, is built up in layers in a build-up field (8) by selectively solidifying the build-up material (13) by irradiating the build-up material (13) with at least one energy beam (22), the method comprising the steps of: - recording a process chamber sensor data set (SD) with spatially resolved thermal data of a component layer (B) currently being solidified; - providing a process chamber control data set (KD) with a target shape (F) of the component layer (B) currently being solidified; - determining a number of special regions (S) in the target shape (F); - assigning the number of special regions (S) to corresponding regions in the process chamber sensor data set (SD); - generating a correction factor module (KK), wherein correction factors (KF) are generated in the special regions (S) according to different rules than in other regions of the target shape (F) outside the special regions (S); - correcting control data (PS) for the additive manufacture of a subsequent component layer (B1) based on the correction factor module (KK); - outputting the corrected control data (PS) to a device (1) for additively manufacturing a component (2). The invention also relates to corresponding control data, a method for additive manufacturing, a control data generation device, a control device, and a manufacturing device.
B22F 10/368 - Temperature or temperature gradient, e.g. temperature of the melt pool
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
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
The invention relates to a method for controlling a manufacturing process for additively manufacturing a component (2) in an apparatus (1), wherein build-up material (13) is solidified on a build-up field (8) in a process chamber (3) by irradiating the build-up material (13) with at least one energy beam (22), and wherein a process gas (G) loaded with impurities (A) is discharged from the process chamber (3) through a gas line (9), filtered, and returned to the process chamber (3), the method comprising the steps: - using a contamination measuring unit (18) to record a number of measured values (M), each measured value (M) permitting a conclusion to be drawn about a degree of contamination, at the time of recording, in the process gas (G) flowing through the gas line (9), - evaluating the number of measured values (M), - depending on the evaluation of the number of measured values (M), controlling the apparatus (1) and/or an output device (39) which is connected to the manufacturing process via a data link. The invention also relates to a corresponding system and to a manufacturing apparatus.
01 - Chemical and biological materials for industrial, scientific and agricultural use
06 - Common metals and ores; objects made of metal
Goods & Services
Chemicals for use in industry; Chemicals for use in science; Unprocessed artificial resins; Unprocessed plastics, in particular in form of liquids, granules, powder and/or paste Common metals in powder form; common metals and their alloys, namely, sinter powders; Alloys of common metal
43.
CALIBRATION SYSTEM FOR AN ENERGY BEAM OF AN ADDITIVE MANUFACTURING DEVICE
The invention relates to a calibration system (100, 100', 100'') for an energy beam (22) of an additive manufacturing device (1). The calibration system comprises an additive manufacturing device (1) with a beam inlet (25) for the energy beam (22), a gas supply (31) for providing a gas that is suitable for calibration, and a measuring unit (35) for detecting a beam property of the energy beam (22). In addition, the calibration system (100, 100', 100'') comprises a calibration aid (40, 60, 80) with a hollow space (54, 74, 94) and an inflow opening (41, 61, 81) for introducing the gas into the hollow space (54, 74, 94). The calibration aid (40, 60, 80) is arranged in the additive manufacturing device (1) and the energy beam (22) is surrounded by the hollow space (54, 74, 94) from the beam inlet (25) to the measuring unit (35). For calibration purposes, the gas flows into the hollow space (54, 74, 94). The invention further relates to a method for calibrating an energy beam (22) and to the use of a calibration aid (40, 60, 80) for calibrating an energy beam (22).
The invention relates to a method for generating irradiation control data (BS) for a device (1) for additive manufacturing of a component (2) in a manufacturing process, in which the component (2) is constructed in layers in a construction field (8) by selectively solidifying the construction material (13) by irradiation of the construction material (13) using at least one energy beam (22), the method comprising the steps of: - providing a component data set (TD) comprising geometry data of at least one component layer of the component (2) and/or comprising a trajectory data set (TD) with scan track segments (B) for producing a component layer of the component (2), - creating a number of standardised target tracks (T2) from the component data set (TD), a standardised target track (T2) being formed from standard track segments (nB), the spatial length of which is an integer multiple of a standard length (N), which is determined from a predefined scan control cycle of the device (1), - generating irradiation control data (BS) in such a way that the device (1) for additive manufacturing can create a component layer with a solidification of construction material (13) on the basis of this irradiation control data (BS) along the number of standardised target tracks (T2), - outputting the irradiation control data (BS) to a memory unit and/or to a device (1) for additive manufacturing of a component (2). The invention furthermore relates to corresponding control data, a method for additive manufacturing, a control data generation device, a control unit and a manufacturing device.
B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
B22F 12/43 - Radiation means characterised by the type, e.g. laser or electron beam pulsedRadiation means characterised by the type, e.g. laser or electron beam frequency modulated
B29C 64/273 - Arrangements for irradiation using laser beamsArrangements for irradiation using electron beams [EB] pulsedArrangements for irradiation using laser beamsArrangements for irradiation using electron beams [EB] frequency modulated
45.
FILTER SYSTEM HAVING INDIVIDUALLY SEPARABLE FILTER CHAMBERS
A device for providing a process gas atmosphere during a manufacturing method for a three-dimensional object (2) in a process chamber (3) of an additive manufacturing device comprises a gas circulation system with a gas circuit for a process gas conducted through a process chamber (3), the gas circuit being closed during operation, wherein a filter system (40) having a plurality of filter chambers (41a, 41b, 41c) is disposed in the closed gas circuit, at least three filter chambers are provided, each of which has at least one filter element (43a, 43b, 43c) for filtering particles in the gas circuit, and a gas control device (80) for controlling the gas circuit is provided, the gas control device being designed such that it can separate a number of filter chambers (41a, 41b, 41c) from the gas circuit during the manufacturing method in progress and at the same time can ensure that, at least for part of the time, preferably constantly, the number of filter chambers remaining in the gas circuit exceeds the number of filter chambers separated from the gas circuit.
B01D 46/00 - Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
B01D 46/10 - Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
B01D 46/24 - Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
B01D 46/56 - Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition
B01D 46/58 - Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition connected in parallel
B01D 46/71 - Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter with pressurised gas, e.g. pulsed air
B22F 10/28 - Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
B22F 10/32 - Process control of the atmosphere, e.g. composition or pressure in a building chamber
The present in invention relates to powder mixtures for use in additive manufacture, which comprise three particle fractions A, B and C with different median particle sizes, wherein the median particle sizes relate to each other as 0.2 to 0.5 / 1 / 1.2 to 2. These powder mixtures have higher apparent density and/or conditioned bulk density compared to conventional additive manufacture powders and thus allow for faster processing with less defects. The present invention further relates to methods for the preparation of respective powder mixtures, methods and devices for the preparation of three-dimensional objects from such powder mixtures and three-dimensional objects, which have been prepared accordingly, as well as the use of the powder mixtures for reducing the amount of defects in additive manufacturing processes.
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
B22F 10/34 - Process control of powder characteristics, e.g. density, oxidation or flowability
B33Y 70/00 - Materials specially adapted for additive manufacturing
47.
DYNAMIC ALLOCATION OF OBJECTS TO BE MANUFACTURED TO ADDITIVE MANUFACTURING DEVICES
The invention relates to a computer-assisted method for controlling a plurality of additive manufacturing devices, said method comprising the following steps: receiving a number of first computer-based data models, each of which geometrically describes a first object to be manufactured by means of an additive manufacturing device; receiving state data and/or property parameters of a plurality of additive manufacturing devices, each of which is allocated to at least one second computer-based data model of a second object to be manufactured in the additive manufacturing device; transmitting at least one first computer-based data model to a target manufacturing device, that is selected from the plurality of additive manufacturing devices, in order to manufacture the first object, that is described by the first computer-based data model, by means of the target manufacturing device, wherein the target manufacturing device to which the at least one first computer-based data model is transmitted is selected based on a rule-based automatic decision in which the received state data and/or property parameters are taken into consideration.
B22F 10/28 - Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
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
48.
METHOD AND DEVICE FOR GENERATING CONTROL DATA FOR A DEVICE FOR ADDITIVE MANUFACTURING OF A COMPONENT
The invention relates to a method for generating control data (PS) for a device (1) for additive manufacturing of a component (2) in a manufacturing process, in which method the component (2), in a construction field (8), is constructed in the form of component layers (B) by selective solidification of build-up material (13), preferably comprising a metal-based powder, by irradiating the build-up material (13) with at least one enegry beam (22), the method comprising the steps of: a) obtaining or generating layer information (SI) comprising geometric parameters of component layers and/or information relating to scan vectors of solidification regions (V1, V2, V3, V4) which represent component layers (B) of the component (2); b) selecting or generating a first filling region (F1) for a first solidification region (V1), this filling region (F1) having a filling pattern (FM) of scan vectors (S) parallel to one another with a predefined vector spacing; c) creating a second filling region (F2) having a filling pattern (FM) of scan vectors (S) parallel to one another for a second solidification region (V2) lying on the first solidification region (V1), the scan vectors (S) of the second filling region (F2) being oriented substantially parallel to the scan vectors (S) of the first filling region (F1) and being arranged offset relative thereto; d) generating control data (PS) in such a way that the additive manufacturing device (1) can generate component layers (B) corresponding to the solidification regions (V1, V2, V3, V4) using this control data (PS). The invention further relates to corresponding control data, a method for additive manufacturing, a control data generation device, a control device, and a manufacturing device.
B22F 10/28 - Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
B22F 10/366 - Scanning parameters, e.g. hatch distance or scanning strategy
B28B 1/00 - Producing shaped articles from the material
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
The invention relates to a method for generating control data for a device for additively manufacturing a component in a manufacturing process, in which method the energy beam is moved along a number of solidification paths across the construction field, and operation takes place at least temporarily in a toothing mode in which, when the energy beam is being moved across the construction field, a location-dependent desired welding-in depth of the energy beam is switched over at a plurality of switchover points which are randomly distributed over at least one defined region of a cross-section of the component in the layer in question.
The invention relates to a flow device for an additive manufacturing device (1), comprising a gas-supply apparatus for generating a gas flow (33) at least in a process chamber (3) of the manufacturing device, a feed line (30) for supplying the gas flow to the process chamber, and a flow-modification element (31) for introducing the gas flow from the feed line (30) into the process chamber (3). The flow-modification element (31) comprises at least one first gas-conducting element (144a, 144b) extending from a gas-inlet side (141) to a gas-outlet side (142) and a plurality of ducts (143a, 143b, 143c), each of the ducts allowing for gas to be transported from the gas-inlet side (141) to the gas-outlet side (142). A number of first ducts and a number of second ducts are at least partly defined by the first gas-conducting element (144a, 144b), which ducts are mutually spaced in such a way that the number of second ducts, in a direction perpendicular to the build area (10), is arranged closer to the build area than the number of first ducts. A total opening cross-sectional area of the number of first ducts on the gas-outlet side differs from a total opening cross-sectional area of the number of second ducts on the gas-outlet side, and the total opening cross-sectional areas of the number of first ducts and the number of second ducts on the gas-inlet side have substantially the same size. Alternatively or additionally, at least one partial gas flow (61) which is introduced from the number of first ducts into the process chamber during operation of the flow device is directed towards one plane of the build area (10).
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
Disclosed is a filter system for an additive manufacturing device for purifying a process gas of the additive manufacturing device wherein, in order to purify a volume of process gas during operation, the filter system has at least one permanent filter. The permanent filter is configured so as to be thermally stable in a manner such that during operation, the permanent filter is stable at a temperature of more than 110° C. Further disclosed is an additive manufacturing device as well as an additive manufacturing process.
The present invention relates to a steel powder for additive manufacture of three-dimensional objects and in particular for the manufacture hot and cold work tools, wherein the steel combines the properties of carbon hardening and maraging steel. Such steels have been found to be readily processable and provide crack free objects with low distortion. The present invention further relates to methods for the preparation of corresponding steel powders, methods for the manufacture of three-dimensional objects from corresponding steel powders and three-dimensional objects prepared by such methods, and the use of a corresponding steel powder for the preparation of die casting or injection molding tools and for suppressing the formation of cracks in the preparation of three-dimensional objects from steel.
B22F 1/05 - Metallic powder characterised by the size or surface area of the particles
B22F 5/00 - Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
B22F 10/28 - Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
B22F 12/00 - Apparatus or devices specially adapted for additive manufacturingAuxiliary means for additive manufacturingCombinations of additive manufacturing apparatus or devices with other processing apparatus or devices
The invention relates to a method for generating a control data set for an energy input device of an additive manufacturing device which is designed to produce an object by applying a construction material layer by layer and by solidifying the construction material in a construction area (8) by means of the energy input device. The method has the following steps: a first step (S1) of accessing computer-based model data of an object cross-section of the object to be produced; a second step (S2) of generating a data model of a construction material layer region to be solidified in order to produce the object cross-section, wherein the region to be solidified is separated into a plurality of sub-regions (8a, 8b), at least one first sub-region (8a) and a second sub-region (8b) adjoin each other at a border (8ab), and points in the first sub-region (8a) are scanned in a timed manner with respect to points in the second sub-region (8b); and a third step (S3), in which the control data set for the energy input device is generated while taking into consideration the data model generated in the second step.
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 10/28 - Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
B22F 10/366 - Scanning parameters, e.g. hatch distance or scanning strategy
B29C 64/277 - Arrangements for irradiation using multiple radiation means, e.g. micromirrors or multiple light-emitting diodes [LED]
B29C 64/393 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
The present application is concerned with a powder mixture for additive manufacturing processes, wherein the powder mixture comprises a duplex steel powder component and an austenitic steel powder component, wherein the powder mixture comprises Cr in an amount of at least 21.3 % by weight. The addition of the austenitic steel powder component increases the ductility of the duplex steel and reduces internal stresses which result in cracking in objects build with duplex steel. The present application is further concerned with methods for the preparation of such powder mixtures, methods and devices for the preparation of three-dimensional objects from the powder mixtures and three-dimensional objects, which have been prepared accordingly, as well as the use of an austenitic steel powder to suppress the formation of cracks in duplex steel three-dimensional objects.
A mixing device serves for producing a powder mixture of a first powder component and at least one second powder component for an additive manufacturing device. The mixing device includes a first container for receiving the first and/or the second powder component, where a discharge opening for discharging the first and/or the second powder component is provided at a lower boundary of the first container, and a second container for receiving the first and/or the second powder component. The second container is designed to be at least partially open towards an upper side. The first and second container each include at least one fluidization zone for introducing a gas into the first and second container. The mixing device further includes a powder conduit that connects to the discharge opening of the first container and is guided into the second container.
The invention relates to a particle separator (1) for an additive manufacturing device (5) for separating a coarse-particle fraction (6) from a process gas (50) of an additive manufacturing device (5) that flows through the particle separator (1) during operation. The particle separator (1) has at least one main flow-guiding body (10), an inlet element (12) for process gas (50) entering the main flow-guiding body (10) and an outlet element (13) for process gas (50) leaving the main flow-guiding body (10). The particle separator (1) also has an adhesion-reducing element (2). The adhesion-reducing element (2) has at least one temperature-controlling element (20), in order to control the temperature at least of a subregion (15, 15') of a housing wall (14) of the particle separator (1), which subregion (15, 15') is subjected to the flow of process gas (50) during operation. As an alternative, or in addition, the adhesion-reducing element (2) has at least one element (30) for guiding the flow, in order to introduce the process gas (50) of the additive manufacturing device (5) into the, preferably substantially cylindrical, main flow-guiding body (10) in the form of at least two partial streams (31, 33). The invention also relates to a particle-separating system (8) with a particle separator (1), to an additive manufacturing system (9) with at least one additive manufacturing device (5), to a process-gas cleaning process for cleaning process gas (50) and to a method for controlling an additive manufacturing operation.
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
The invention relates to a filter device for an additive manufacturing device for purifying a process gas of the additive manufacturing device, the filter device having at least one permanent filter for purifying a process gas during operation, the permanent filter having at least one coating. The invention also relates to a method for producing such a filter device. The invention further relates to an additive manufacturing device and to a method for additive manufacturing.
B33Y 30/00 - Apparatus for additive manufacturingDetails thereof or accessories therefor
B33Y 40/00 - Auxiliary operations or equipment, e.g. for material handling
B01D 46/10 - Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
B01D 46/24 - Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
B01D 46/52 - Particle separators, e.g. dust precipitators, using filters embodying folded material
B01D 46/54 - Particle separators, e.g. dust precipitators, using ultra-fine filter sheets or diaphragms
B01D 46/58 - Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition connected in parallel
B01D 46/71 - Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter with pressurised gas, e.g. pulsed air
B01D 39/08 - Filter cloth, i.e. woven, knitted or interlaced material
B01D 39/10 - Filter screens essentially made of metal
B01D 39/20 - Other self-supporting filtering material of inorganic material, e.g. asbestos paper or metallic filtering material of non-woven wires
01 - Chemical and biological materials for industrial, scientific and agricultural use
06 - Common metals and ores; objects made of metal
Goods & Services
Chemicals for use in industry; Chemicals for use in science; Unprocessed artificial resins; Unprocessed plastics, in particular in form of liquids, granules, powder and/or paste. Metals in powder form; Sinter powders of metal or containing metal; Alloys of metal.
59.
METHOD AND DEVICE FOR GENERATING CONTROL DATA FOR AN ADDITIVE MANUFACTURING DEVICE
The invention relates to a method for generating control data (PS, BS) for a device (1) for additively manufacturing a component (2), said method comprising the steps: - obtaining or generating layer information (SI) comprising layer structures of the component, wherein layer structures should be solidified with a number of predefined filling patterns (F) in the form of hatching composed of parallel solidification paths (B), - dividing solidification paths (B) of at least one of the filling patterns (F) into at least a first group (G1), a second group (G2), and a third group (G3), wherein each group (G1, G2, G3) substantially comprises solidification paths (B) which are not directly adjacent to one another, - determining an irradiation sequence of the solidification paths (B) of the groups (G1, G2, G3), wherein firstly the solidification paths (B) of the first group (G1) are solidified, then the solidification paths (B) of the second group (G2), and then the solidification paths (B) of the third group (G3), - generating control data (PS, BS) in such a way that the additive manufacturing device (1) can use said control data (PS, BS) to generate a filling pattern (F) in accordance with the corresponding irradiation sequence. The invention also relates to: corresponding control data; a control-data-generating device; a control means for a device for additively manufacturing a component; such a device for additively manufacturing components; and a method for additively manufacturing a component.
Nickel alloys in powder form comprising at least 40 wt.-% Ni, about 20.0 to 25.0 wt.-% Cr, about 5.0 to 25.0 wt.-% Co and about 1.5 to 5.0 wt.-% Ti, which have a content of B in an amount of less than 40 ppmw, are disclosed. Corresponding alloys have the advantage of providing minimal or no micro-cracks as well as an improved ductility in creep conditions compared to similar alloys having a higher content of B, when the alloys are processed by additive manufacturing to prepare three-dimensional objects.
B22F 10/28 - Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
C22C 19/05 - Alloys based on nickel or cobalt based on nickel with chromium
C22F 1/10 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of nickel or cobalt or alloys based thereon
A passivation device for passivating filter residues of a filter device arranged in a process gas circuit of an additive manufacturing apparatus includes a reaction unit having an inlet suitable for supplying an oxidant, a coupling unit adapted to be coupled to the filter device for introducing filter residues into the reaction unit, a discharge unit suitable for discharging passivated filter residues from the reaction unit, and an energy supply unit suitable for effecting a reaction between the filter residues and the oxidant in the reaction unit.
B22F 1/145 - Chemical treatment, e.g. passivation or decarburisation
B01D 46/00 - Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
B01F 27/72 - Mixers with rotary stirring devices in fixed receptaclesKneaders with stirrers rotating about a horizontal or inclined axis with helices or sections of helices
B33Y 40/00 - Auxiliary operations or equipment, e.g. for material handling
FRIEDRICH-ALEXANDER-UNIVERSITÄT ERLANGEN-NÜRNBERG, KÖRPERSCHAFT DES ÖFFENTLICHEN RECHTS (Germany)
Inventor
Bück, Andreas
Dechet, Maximilian
Fischer, Sybille
Freihart, Karl
Pfister, Andreas
Schmidt, Jochen
Sesseg, Jens
Unger, Laura
Abstract
The present invention relates to a composition comprising at least one polymer, the polymer solidifying from a molten material in a substantially amorphous or completely amorphous form. The present invention further relates to a method for producing the composition according to the invention, to a structural component comprising a composition according to the invention and to the use of the composition according to the invention.
A method for determining a distance in an additive manufacturing device includes emitting a number of directed beams using a number of beam sources, detecting at least one of the directed beams from a first beam source using a first detector and generating a signal in dependence on the at least one beam impinging on the least one detector, wherein a recoating element is spatially arranged between the first beam source and the first detector, and determining a distance between a boundary of the recoating element and a surface of a building base and/or an article placed on the building base, based on the signal generated by the detector and using an evaluation unit.
B29C 64/393 - 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
The invention relates to a sensor arrangement (9) for a device (1) for additive manufacturing of a component (2) in a manufacturing process in which build material (13), preferably comprising a metal powder, is solidified in a building area (8) in a process space (3) by means of irradiation of the build material (13) with at least one energy beam (AL), said sensor arrangement (9) comprising: - a sensor module (90) designed to detect oxygen molecules in a gas sample (P) that penetrates into the sensor module (90) and to generate an electrical sensor signal (S) based on the amount of oxygen molecules, - a selective filter element (F) designed to filter the gas sample (P) such that at least hydrogen molecules and/or hydrogen ions and/or water molecules and/or hydroxide ions are filtered out of the gas sample (P). The invention further relates to a manufacturing device and to a test method comprising such a sensor arrangement.
The invention relates to a sensor arrangement (9) for an apparatus (1) for additive manufacturing of a component (2) in a manufacturing process in which, on a build zone (8) in a process area (3), construction material (13), preferably comprising a metal powder, is solidified by means of irradiation of the construction material (13) using at least one energy beam (AL), the sensor arrangement (9) comprising: – a sensor module (90), designed to detect oxygen molecules in a gas sample (P) penetrating into the sensor module (90) and to generate an electrical sensor signal (S) on the basis of the quantity of oxygen molecules, – a control module (95), designed to determine whether the sensor module (90) is measuring outside a predetermined action range on the basis of a comparison of the sensor signal (S) or of a variable derived from the sensor signal (S) with a predefined limit value (G), and if this is the case, to generate a control signal (SL) designed to initiate a predetermined countermeasure that is intended to change the conditions in the apparatus (1) so that the sensor module (90) measures in the action range (AB) again. The invention furthermore relates to a manufacturing apparatus and to a measuring method with such a sensor arrangement.
Disclosed is a method for controlling an energy input device of an additive manufacturing device. A beam bundle deflection center is assigned to each of the number of beam bundles from which this beam bundle is directed onto the build plane. Each beam bundle deflection center is assigned a projection center corresponding to a perpendicular projection of the position of the beam bundle deflection center onto the build plane. The directions of the movement vectors of the number of beam bundles when scanning the trajectories are defined such that at each of the solidification points in this section the movement vector has an angle with respect to a connection vector from this solidification point to the projection center of the beam bundle used, which angle is smaller than a predetermined maximum angle γ1.
Method for moderating a reaction of metal particles, in particular metal condensates, preferably from an additive manufacturing process, in particular a laser sintering or laser melting process, wherein the metal particles are combined, in particular mixed, with an at least partially meltable inerting material, wherein the inerting material comprises particles with a particle size of less than or equal to 100 µm.
The invention relates to a calibration method of a device for layered additive manufacturing of items, which device comprises: a control device for controlling the layered additive manufacturing process; a layer deposition device which is designed to provide a layer of a construction material; and an energy supply device which is designed to solidify points of the layer by supplying electromagnetic radiation; wherein the energy supply device is designed to be moved over the construction region and a predefined target direction (X) is specified to the energy supply device for this movement; and wherein the energy supply device comprises a number of radiation emitters which are arranged along an arrangement direction (Y) transversely to the predefined target direction (X); and, depending on the points, the control device specifies to the radiation emitters the emission locations at which radiation should be emitted over the construction region; in which calibration method it is determined whether the movement of the energy supply device leads to a deviation of the movement direction (B) from the predefined target direction (X) and the control device is prompted to specify other emission locations to the radiation emitters on the basis of a determined deviation.
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 10/28 - Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
B22F 10/31 - Calibration of process steps or apparatus settings, e.g. before or during manufacturing
B22F 10/85 - Data acquisition or data processing for controlling or regulating additive manufacturing processes
The present invention relates to a method of treatment of objects produced by an additive manufacturing method, having at least one surface formed from a polymer having a glass transition temperature of at least 120°C, and preferably being formed from such a polymer, and in which the surface of the object is contacted with an organic or inorganic solvent. Such a treatment can smooth the surface of the objects and improve relevant mechanical properties. The present invention further relates to three-dimensional objects produced by such a method and to the use of organic or inorganic solvents for reduction of surface roughness and/or for improvement of mechanical properties and/or chemical stability.
The invention relates to a filter device (1) for filtering a process gas. In particular, the process gas can be a process gas of a device (101) for the additive manufacture of three-dimensional objects (102), and the filter device (1) comprises: a filter chamber (10), at least one filter element (20) which is arranged in the filter chamber and which is designed to filter the process gas, wherein a filter residue remains, a fluid flow generating device (40, 40') which is designed to generate a fluid flow, and a conveyor device (50) for conveying the filter residue in the fluid flow, said conveyor device being designed and/or arranged such that the filter residue is at least partly removed from the filter chamber (10) and is conveyed back into the filter chamber (10).
The invention relates to a passivating device (1) for passivating a filter residue resulting in a filter device (10). The passivating device (1) comprises an outlet region (3, 3') for receiving filter residue from the filter device (10), a fluid feed (4, 4') for supplying a fluid flow of a fluid, which can comprise a passivating agent, to the outlet region (3, 3'), a fluid discharge (5) for discharging the fluid flow and the filter residue out of the outlet region (3, 3'), and an energy supply device (70, 70', 70'') for supplying the fluid flow and/or the filter residue with energy. The passivating device (1) is designed and/or can be controlled so as to produce a chemical reaction between the filter residue and the passivating agent at least partly in an entrained flow. In addition, the passivating device optionally comprises a passivating agent feed for mixing the fluid flow with a passivating agent.
The invention relates to a method and a device (60) for generating optimized process variable values (PGO) for an additive manufacturing process of a manufactured product (2, 2', 2"). For this purpose, request data (AD) of the manufactured product (2, 2', 2") is provided, said data comprising at least geometric data (GD) of the manufactured product (2, 2', 2"). A region (G) is then defined which encompasses the manufactured product (2, 2', 2"), said manufactured product comprising at least one segment (SG, SG1, SG2, SG3). An optimization method is then carried out for at least one segment (SG, SG1, SG2, SG3) of the manufactured product (2, 2', 2") in the defined region (G) in order to select at least one optimal parameter set (PS), which comprises a defined group of process parameter values, from a number of candidate parameter sets (KPS) and in order to ascertain an optimized segment scanning direction distribution (SSV) using a defined target function (ZF) and the request data (AD). The optimal parameter set (PS) and the optimized segment scanning direction distribution (SSV) are provided in the form of optimized process variable values (PGO). The invention additionally relates to a method and a control data generating device (54, 54') for generating control data (BSD, PSD), to a method for controlling a control device (50) for a production device (1) for an additive manufacturing process, and to a corresponding production device (1).
B22F 10/28 - Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
B22F 10/36 - Process control of energy beam parameters
B22F 10/366 - Scanning parameters, e.g. hatch distance or scanning strategy
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
The invention relates to a method and a device (70) for ascertaining property values of a segment (SG, SG1, SG2, SG3) of a manufactured product (2, 2', 2"), which is made of multiple layers (L, L1, L2, L3, L4) of a construction material (13), of an additive manufacturing process. In the process, a parameter set (PS, PS') is ascertained which comprises a defined group of process parameter values for the construction process of at least one layer (L, L1, L2, L3, L4) of the segment (SG, SG1, SG2, SG3). At least one process parameter value comprises a layer scanning direction arrangement (HS2, HS3). Furthermore, at least one segment scanning direction distribution (SSV) is ascertained for the construction process of the segment (SG, SG1, SG2, SG3). A macroproperty value (MWA) of the segment is ascertained on the basis of the parameter set (PS) and the segment scanning direction distribution (SSV). The invention additionally relates to a method and a testing device (80) for testing a manufactured product (2, 2', 2"), to a control data generating device (54, 54') which comprises such a testing device (80), to a control device (50) for a production device (1), said control device comprising such a control data generating device (54, 54'), and to a production device (1). The invention also relates to a method for setting up a basic property database (EDB) and to a property database system (DBS) comprising such a basic property database (EDB).
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
The invention relates to a method for oxidizing particles on a filter element of an additive manufacturing device. The additive manufacturing device has a process chamber (3) for producing a three-dimensional object (2) and a circulating system (31, 32, 33, 34, 35, 40) with a gas circuit, which is closed during operation, for a protective gas, which is conducted through the process chamber (3). A filter system (40) is connected to the circulating system, wherein the filter system has at least one filter chamber (41) which contains a filter element (43) for filtering particles in the protective gas flow, said filter elements being cleanable by a gas pressure pulse. The filter element is then cleaned by means of a gas pressure pulse, and the cleaned filter element is then exposed to an oxidizing agent for a period of time defined in advance or the cleaned filter element is exposed to said oxidizing agent for a period of time which is controlled using a sensor for detecting the concentration of the oxidizing agent.
B01D 46/48 - Removing dust other than cleaning filters
B01D 46/56 - Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition
B01D 46/71 - Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter with pressurised gas, e.g. pulsed air
B22F 10/28 - Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
B22F 10/32 - Process control of the atmosphere, e.g. composition or pressure in a building chamber
The invention relates to a method for oxidizing welding fume residue of an additive manufacturing device designed to process a metal-based construction material. The additive manufacturing device has a process chamber (3) for producing a three-dimensional object (2) and a recirculating system (31, 32, 33, 34, 35, 40) with a gas circuit for a protective gas which is conducted through the process chamber (3). In the method, the welding fume residue is exposed to an oxidizing agent in a chamber for a passivation period of time, wherein the passivation period of time is terminated on the basis of a difference between oxidizing agent concentrations detected in the chamber by at least one sensor at two points in time separated by a delay.
B01D 46/00 - Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
B01D 46/71 - Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter with pressurised gas, e.g. pulsed air
B01D 46/80 - Chemical processes for the removal of the retained particles, e.g. by burning
B22F 10/28 - Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
B22F 10/32 - Process control of the atmosphere, e.g. composition or pressure in a building chamber
Disclosed is a method for providing control data for manufacturing a three-dimensional object including accessing computer-based model data of at least one portion of the object, at least one data model specifying the scanning of locations of the region to be selectively solidified, using at least one beam along a first trajectory and a second trajectory substantially parallel thereto, the motion vectors of the beams in the construction plane having mutually opposite directional components during the scan along the two trajectories, and the distance between a starting point of the second trajectory and an end point of the previously scanned first trajectory is less than half a beam width of the beam at the end point of the first trajectory ;and a providing control data of the at least one data model for the generation of a control data set.
B29C 64/393 - 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
B22F 10/366 - Scanning parameters, e.g. hatch distance or scanning strategy
77.
BIODEGRADEABLE PLASTICS FOR USE IN ADDITIVE MANUFACTURING PROCESSES
The present application concerns a plastic powder for use as a building material for the additive manufacturing of a three-dimensional object by selective solidification of the building material at the points corresponding to the cross-section of the three-dimensional object in the respective layer by exposure to radiation, wherein the plastic powder comprises polymer-based particles and an additive for imparting biodegradability in an amount of 0.05 to 5% by weight based on the weight of the polymeric components in the polymer-based powder. The present application further concerns method for the production of such powder, methods for the production of three dimensional objects using such powder as well as three dimensional objects, which have been prepared accordingly, as well as the use of corresponding additives to impart biodegradability to three dimensional objects, which have been prepared accordingly.
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 70/00 - Materials specially adapted for additive manufacturing
B33Y 80/00 - Products made by additive manufacturing
78.
Method for calibrating a device for producing a three-dimensional object and device configured for implementing said method
A calibration method serves for calibrating a manufacturing device for additively producing a three-dimensional object by applying layer by layer and selectively solidifying a building material. The manufacturing device comprises at least two scanning units, each of which is capable of directing a beam to different target points in the working plane, which are located within a scanning region assigned to the respective scanning unit, wherein the scanning regions region of the at least two scanning units overlap in an overlap area. At least a first of the at least two scanning units is assigned a first monitoring unit whose monitoring region extends to a target point of the first scanning unit and its proximity, wherein a change of a position of the monitoring region is carried out as a function of a change of a position of the target point.
B22F 12/90 - Means for process control, e.g. cameras or sensors
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 laser beamsArrangements 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]
The present invention relates to a method for the additive manufacture of components (2), wherein a pulverulent or wire-shaped metal construction material is deposited on a platform (4) in layers, melted using a primary heating device (7), in particular using a laser or electron beam (14), and is heated using an induction heating device (8), which has an alternating voltage supply device (9) with an induction generator (16) and at least one induction coil (10) which can be moved above the platform (4). The induction generator (16) is controlled such that the induction generator is driven with a different output at different specified positions of the at least one induction coil (10). The invention additionally relates to a device, to a control method, and to a storage medium.
B22F 12/41 - Radiation means characterised by the type, e.g. laser or electron beam
B22F 12/00 - Apparatus or devices specially adapted for additive manufacturingAuxiliary means for additive manufacturingCombinations of additive manufacturing apparatus or devices with other processing apparatus or devices
An additive manufacturing apparatus serves for producing a three-dimensional object (2) by means of successively solidifying layers of a building material (13) within a build area (10) of the additive manufacturing apparatus (1), the layers corresponding to cross-sections of the object (2) to be produced. The additive manufacturing apparatus (1) comprises a process chamber (3) for building the object (2), the process chamber (3) comprising the build area (10) and a ceiling (4a) of the process chamber located opposite the build area (10), and a nozzle element (43) for introducing a gas into the process chamber (3), the nozzle element (43) being arranged in the ceiling (4a) of the process chamber (3). The nozzle element (43) comprises an inlet (61), an outlet (62), and a plurality of gas flow passages (65, 65a, 65b) being in fluidic communication with the inlet (61) and the outlet (62) for receiving a gas at the inlet (61) and supplying the gas through the outlet (62) into the process chamber (3), wherein the outlet (62) faces the build area (10), preferably at least a center region of the build area (10), and the outlet (62) of the nozzle element (43) has a substantially elongate shape, the elongate shape defining a longitudinal direction (l) of the nozzle element (43), and wherein the plurality of gas flow passages (65, 65a, 65b) subdivide a cavity of the nozzle element (65) at least along the longitudinal direction (l).
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
Disclosed are powder mixtures for use in the manufacture of three dimensional objects. In the respective powder mixtures, a first material includes an aluminium alloy or a mixture of elemental precursors thereof, and is in powder form. The second material includes a metal powder of Zr and/or Hf. By the addition of the second material, it is possible to prepare three dimensional objects with high ultimate tensile strength and yield strength by additive manufacturing. Further disclosed are processes for the preparation of corresponding powder mixtures and three dimensional objects, the three dimensional objects themselves, devices for implementing the processes, and uses of the powder mixture.
An additive manufacturing device for manufacturing a three-dimensional object by selective solidification of a building material layer by layer, including a process chamber having a chamber wall, wherein the chamber wall of the process chamber has at least one elongate opening. The device includes a cover device having a cover area for covering and/or shielding the at least one opening, the extent of the cover area being variable in the longitudinal direction of the opening, and the cover device includes a plurality of individual elements of similar type that are connected to one another in such a way that they are movable relative to one another in the longitudinal direction of the opening.
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 64/236 - Driving means for motion in a direction within the plane of a layer
The invention relates to an apparatus (1) for the additive manufacture of finished products (2) by successive selective consolidation of layers (S) of a powdered construction material (15), which can be consolidated by means of irradiation, at points which correspond to a cross-section of the finished product (2). The apparatus (1) comprises at least one construction container (5) comprising at least one height-adjustable construction platform (12), and also at least one beam source (21) for irradiation of construction material (13) to be consolidated in a construction area (8) above the construction platform (12). Furthermore, the apparatus (1) comprises at least one coater (16), the coater (16) being designed to apply layers (S) of the construction material (15) to the construction platform (12) and/or to a previously applied layer. The apparatus (1) also comprises at least one residual powder chamber (50) having a receiving opening (55) to receive excess powdered material (13) moved by the coater (16), a region (B) between the construction area (8) and the receiving opening (55) having at least one flow restricting device (60, 61) for the powdered construction material (13). Moreover, a region between the construction area (8) and the residual powder chamber (50) and/or at least a part of the residual powder chamber (50) is preferably covered by at least one cover element (54) leaving the receiving opening (55) free, the surface of the cover element (54) having at least one flow restricting device (60, 61) for the powdered construction material (13). The invention also relates to a cover element (54) for such an apparatus (1), and to a method for producing such an apparatus (1) and such a cover element (54) and to the use of the cover element (54) for the apparatus (1).
B33Y 30/00 - Apparatus for additive manufacturingDetails thereof or accessories therefor
B33Y 40/00 - Auxiliary operations or equipment, e.g. for material handling
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 64/307 - Handling of material to be used in additive manufacturing
84.
METAL ALLOYS WITH IMPROVED PROCESSABILITY FOR DIRECT METAL LASER SINTERING
Disclosed are mixtures for use in additive manufacturing, wherein the powder mixture comprises first and second materials. The first material includes a metal alloy or a mixture of elemental precursors thereof, and is in powder form. The second material includes a reinforcement material comprising powder particles having a particle diameter of from 1 to less than 30 μm (as determined by laser scattering or laser diffraction). The inventive powder mixtures allows for the processing to three dimensions objects which are free of cracking and which thus have favourable mechanical characteristics. Further disclosed are processes for the preparation of corresponding powder mixtures and three dimensional objects, three dimensional objects prepared accordingly and devices for implementing processes for the preparation of such objects, as well as the use of a corresponding powder mixture to suppress crack formation in a three-dimensional object, which is prepared by additive manufacturing.
Powder mixture for the use as building material for manufacturing a three-dimensional object by solidifying the building material layer by layer at the positions corresponding to the cross-section of the three-dimensional object in the respective layer, in particular by exposure to radiation, wherein the powder mixture comprises a first powder and a second powder, wherein the first powder comprises powder particles of a first thermoplastic polymer material and a reinforcement material, wherein the reinforcement material is at least partially embedded in the powder particles of the first powder and/or adhered to the surface of the powder particles of the first powder, wherein the second powder comprises powder particles of a second thermoplastic polymer material which is the same as or different from the first thermoplastic polymer material, wherein the powder particles of the second powder do not comprise the reinforcement material or comprise it only in an amount of at most 50% by weight relative to the amount of the reinforcement material in or on the powder particles of the first powder.
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 70/10 - Composites of different types of material, e.g. mixtures of ceramics and polymers or mixtures of metals and biomaterials
A method of manufacturing an object (3) in a build area (22) by means of a successive layer-by-layer solidification of a building material in powder form (18) comprises the steps:
a) applying a layer of the building material in powder form (18) having a predetermined thickness d2 onto a layer of the building material already previously applied which has been solidified in a region corresponding to a cross section of the object (3), wherein, for applying the building material (18), a recoater (5, 15) is moved in a direction (B) across the layer already previously applied, and
b) selectively solidifying the building material (18) applied in step a) in a region corresponding to a cross section of the object (3),
wherein, prior to the application of a layer, for a solidified region having a thickness d1 in the layer applied before, the maximum (MAX) of the product of the extension of this solidified region in movement direction (B) of the recoater (5) and the thickness d1 is determined and
during the application of the layer in step a), at least an additional powder amount (P2) proportional to the value of the maximum (MAX) is additionally provided.
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
A support structure for a three-dimensional object is provided, which support structure and three-dimensional object are produced by means of layer-wise applying and selectively solidifying of a building material. The support structure has a reduced resistance to compressional and/or tensional forces applied to the support structure in a first extension direction of the support structure and in said first extension direction the support structure has an alternating shape including a plurality of crests.
The invention describes a laser printing system (100) for illuminating an object moving relative to a laser module of the laser printing system (100) in a working plane (180), the laser module comprising at least two laser arrays of semiconductor lasers and at least one optical element, wherein the optical element is adapted to image laser light emitted by the laser arrays, such that laser light of semiconductor lasers of one laser array is imaged to one pixel in the working plane of the laser printing system, and wherein the laser printing system is a 3D printing system for additive manufacturing and wherein two, three, four or a multitude of laser modules (201, 202) are provided, which are arranged in columns (c1, c2) perpendicular to a direction of movement (250) of the object in the working plane (180), and wherein the columns are staggered with respect to each other such that a first laser module (201) of a first column of laser modules (c1) is adapted to illuminate a first area (y1) of the object and a second laser module (202) of a second column (c2) of laser modules is adapted to illuminate a second area (y2) of the object, wherein the first area (y1) is adjacent to the second area (y2) such that continuous illumination of the object is enabled.
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 64/277 - Arrangements for irradiation using multiple radiation means, e.g. micromirrors or multiple light-emitting diodes [LED]
B41J 2/45 - Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of radiation to a printing material or impression-transfer material using arrays of radiation sources using light-emitting diode arrays
B29C 64/268 - Arrangements for irradiation using laser beamsArrangements for irradiation using electron beams [EB]
B29C 64/282 - Arrangements for irradiation using multiple radiation means, e.g. micromirrors or multiple light-emitting diodes [LED] of the same type, e.g. using different energy levels
B29C 64/386 - Data acquisition or data processing for additive manufacturing
B29C 64/20 - Apparatus for additive manufacturingDetails thereof or accessories therefor
B22F 12/00 - Apparatus or devices specially adapted for additive manufacturingAuxiliary means for additive manufacturingCombinations of additive manufacturing apparatus or devices with other processing apparatus or devices
B23K 26/08 - Devices involving relative movement between laser beam and workpiece
B41J 2/455 - Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of radiation to a printing material or impression-transfer material using arrays of radiation sources using laser arrays
A powder discharge module serves for a recoating device of an additive manufacturing device. A powder discharge module has a powder container for receiving the building material in powder form, and the powder container includes a supply opening for supplying the building material in powder form to the powder container and a discharge section facing the working plane, the discharge section having at least a first discharge device for discharging building material in powder form and at least one fluidization zone for fluidizing the building material in powder form using a gas in the powder container. The powder container further includes a first flow reduction element provided in the powder container.
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 64/255 - Enclosures for the building material, e.g. powder containers
The invention relates to a method for removing part (41, 55) of a particle collection device (40, 41, 42, 55) which is loaded with at least highly flammable particles (51). The part (41, 55) is removed from a process gas purification device (100) of an additive manufacturing device (1) by means of the following steps. An inert gas (50, 250) substantially enclosing the particles (51) is provided. The part (41, 55) of the particle collection device (40, 41, 42, 55) is removed from the process gas purification device (100), with the inclusion of the particles (51) in the inert gas (50, 250) being retained.
The invention relates to a pulverulent composition comprising a powder based on at least one polyaryl ether ketone, said composition having at least a first endothermic peak and a second endothermic peak, the first endothermic peak having a peak temperature strictly greater than 280°C, and the second endothermic peak having a peak temperature equal to a value of 200°C to 280°C; the endothermic peaks are measured on a thermogram obtained by differential scanning calorimetry, according to the standard ISO 11357-3: 2018, on first heating, using a temperature ramp of 20°C/minute. The invention also relates to a method for the electromagnetic radiation-mediated layer-by-layer sintering construction of a three-dimensional object from the pulverulent composition, to a method for determining the minimum construction temperature to be used, and also to objects that may be manufactured via this construction process.
C08G 65/40 - Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from hydroxy compounds or their metallic derivatives derived from phenols from phenols and other compounds
Disclosed is a method for the post-treatment of particles carried along in a process gas of a device for the generative manufacturing of three-dimensional objects, wherein the particles are conducted to a filter chamber. An oxidant is added to the particles and that an oxidation reaction of the particles with the oxidant is initiated.
A device for the making of a three-dimensional object by means of layer by layer consolidation of a powderlike construction material by electromagnetic radiation or particle beam has a control unit that controls an irradiation device such that the powder particles of the construction material are bonded together at the sites where the radiation impinges on the construction material. A selective heating device is designed so that any given partial surface of the construction field can be heated before and/or after to a plateau temperature, which is significantly higher than the temperature of at least a portion of the construction field outside the partial surface. The control unit actuates the selective heating device such that the partial surface has a predefined minimum distance from the edge of the construction field.
B29C 64/268 - Arrangements for irradiation using laser beamsArrangements for irradiation using electron beams [EB]
B22F 10/28 - Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
B22F 12/13 - Auxiliary heating means to preheat the material
B22F 12/90 - Means for process control, e.g. cameras or sensors
B22F 10/36 - Process control of energy beam parameters
B22F 10/362 - Process control of energy beam parameters for preheating
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 beamNozzles therefor the fluid stream containing particles, e.g. powder
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
The invention relates to a method for generating control data for a device for additively manufacturing a component in a manufacturing process, in which method the energy beam is moved along a number of solidification paths across the construction field, and operation takes place at least temporarily in a toothing mode in which, when the energy beam is being moved across the construction field, a location-dependent desired welding-in depth of the energy beam is switched over at a plurality of switchover points which are randomly distributed over at least one defined region of a cross-section of the component in the layer in question.
G05B 19/4099 - Surface or curve machining, making 3D objects, e.g. desktop 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
Disclosed is a flow device for an additive manufacturing device. The device includes a gas supply line located outside the process chamber to conduct gas to a gas inlet. The gas supply line includes a first line section extending in a first extension direction and a maximum width that extends transverse to the first extension direction and parallel to the build area. A length of the first line section is at least half as large as the maximum value of the width. The first line section also includes a first subsection spaced from the gas inlet and including a first flow conditioning unit and a wall of the first line section. The first flow conditioning unit substantially aligns the gas stream in the first extension direction.
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 - Apparatus for additive manufacturingDetails thereof or accessories therefor
B22F 12/17 - Auxiliary heating means to heat the build chamber or platform
97.
Method and device for generating control data for an additive manufacturing device
has an intensity profile curve, running along the edge of the intensity distribution, which intensity profile curve has, at least at one point, a maximum value, and, at least at one point in a region opposite the maximum value on the intensity profile curve, a minimum value.
Plastic powder for use as a building material for manufacturing a three-dimensional object by layer-by-layer melting and solidification by hardening of the building material at the positions corresponding to the cross-section of the three-dimensional object in the respective layer by exposure to radiation, preferably by exposure to NIR radiation, wherein the plastic powder comprises a dry blend of polymer-based particles and particles of a NIR absorber, wherein the NIR absorber comprises carbon black or is carbon black and wherein the weight percentage of carbon black in the total weight of polymer and carbon black particles is in the range of at least 0.02% and at most 0.45%, and/or wherein the carbon black has a mean primary particle diameter in the range of from 15 nm to 70 nm, preferably of at least 26 nm and/or at most 58 nm.
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 70/00 - Materials specially adapted for additive manufacturing
A mixing device (18) serves for producing a powder mixture from a first powder component and at least one second powder component for an additive manufacturing device (1). The mixing device (18) comprises a first container (30) for receiving the first and/or the second powder component, wherein a discharge opening (34) for discharging the first and/or second powder component is provided at a lower limit of the first container (30), and a second container (40) for receiving the first and/or the second powder component, wherein the second container (40) is designed at least partially open toward a top side. The second container (40) has at least one fluidization zone (47), in order to introduce a gas into the second container (40). The mixing device (18) further comprises a powder line (50), which is attached to the discharge opening (34) of the first container (30) and guided into the second container (40).
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
Plastic powder for use as building material for additively manufacturing a three-dimensional object by selectively solidifying the building material at the positions corresponding to the cross-section of the three-dimensional object in the respective layer, in particular by exposure to radiation, wherein the plastic powder comprises a mixture of polymer-based particles and particles of a particulate additive and wherein the particulate additive is selected such that the crystallization point of the mixture of the polymer-based particles and the particulate additive is substantially not increased compared to the crystallization point of a mixture of the polymer-based particles without the particulate additive.
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
