A milling tool for milling a material is provided. The milling tool comprises a tool shank having an axis of rotation, and further comprises a tool head at one end thereof. The tool head comprises at least two tiers, each tier comprising a plurality of flutes extending circumferentially around the tool head. The tool head comprises superhard material and the tiers are axially displaced from each other and separated by a non-cutting portion of the tool head.
This disclosure relates to a method of machining articles from a disc comprising superhard material, such as polycrystalline diamond (PCD) or polycrystalline cubic boron nitride (PCBN). The method includes providing a disc having a diameter of no more than 100 mm and a thickness of no more than 10 mm, providing a nesting pattern, scanning the disc to identify and locate any flaws in the disc and subsequently creating a machining program that takes into account said flaws.
G05B 19/401 - Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by control arrangements for measuring, e.g. calibration and initialisation, measuring workpiece for machining purposes
G05B 19/408 - Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by data handling or data format, e.g. reading, buffering or conversion of data
A milling tool for milling a material is provided, The milling tool comprises a tool shank having an axis of rotation, and further comprises a tool head at one end thereof. The tool head comprises at least two tiers, each tier comprising a plurality of flutes extending circumferentially around the tool head. The tool head comprises superhard material and the tiers are axially displaced from each other and separated by a non-cutting portion of the tool head.
B23C 5/10 - Shank-type cutters, i.e. with an integral shaft
B28D 1/18 - Working stone or stone-like materials, e.g. brick, concrete, not provided for elsewhereMachines, devices, tools therefor by milling, e.g. channelling by means of milling tools
4.
METHOD OF POLISHING A POLYCRYSTALLINE DIAMOND BODY
This disclosure relates to polishing a polycrystalline diamond body. A femtosecond laser system with a maximum average power of 1.1 kW and a minimum average power of 900 W is operated to ablate the surface of a polycrystalline diamond body and thereby reduce its surface roughness.
A superhard construction comprises a substrate comprising a peripheral surface, an interface surface and a longitudinal axis and a super hard material layer formed over the substrate and having an exposed outer surface forming a working surface, a peripheral surface extending therefrom and an interface surface. One of the interface surface of the substrate or the interface surface of the super hard material layer comprises one or more projections arranged to project from the interface surface, the height of the one or more projections being between around 0.2 mm to around 1.0 mm measured from the lowest point on the interface surface from which the one or more projections extend.
E21B 10/573 - Button-type inserts with preformed cutting elements mounted on a distinct support, e.g. polycrystalline inserts characterised by support details, e.g. the substrate construction or the interface between the substrate and the cutting element
B22F 7/06 - Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting of composite workpieces or articles from parts, e.g. to form tipped tools
B22F 5/00 - Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
B22F 7/08 - Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting of composite workpieces or articles from parts, e.g. to form tipped tools with one or more parts not made from powder
6.
A METHOD OF MACHINING ARTICLES FROM A SUPERHARD DISC
This disclosure relates to a method of machining articles from a disc comprising superhard material, such as polycrystalline diamond (PCD) or polycrystalline cubic boron nitride (PCBN). The method includes providing a disc having a diameter of no more than 100 mm and a thickness of no more than 10 mm, providing a nesting pattern, scanning the disc to identify and locate any flaws in the disc and subsequently creating a machining program that takes into account said flaws.
G05B 19/4093 - Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by part programming, e.g. entry of geometrical information as taken from a technical drawing, combining this with machining and material information to obtain control information, named part programme, for the NC machine
7.
Super-hard constructions, methods for making same and method for processing same
A construction comprising a sintered polycrystalline super-hard layer having mutually opposite reinforced boundaries, each of which is bonded to a respective reinforcement structure, in which the super-hard layer includes polycrystalline diamond (PCD) material or polycrystalline cubic boron nitride (PCBN) material. The construction will be configured such that the equivalent circle diameter of each reinforced boundary is at least ten times the mean thickness of the super-hard layer between them. The reinforcement structures will be substantially free of material having a melting point of less than 2,000 degrees Celsius, at least adjacent the reinforced boundaries.
C04B 35/52 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxides based on carbon, e.g. graphite
C04B 37/02 - Joining burned ceramic articles with other burned ceramic articles or other articles by heating with metallic articles
C04B 37/00 - Joining burned ceramic articles with other burned ceramic articles or other articles by heating
C04B 35/5831 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxides based on borides, nitrides or silicides based on boron nitride based on cubic boron nitride
B22F 7/06 - Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting of composite workpieces or articles from parts, e.g. to form tipped tools
8.
Composite material, articles comprising same and method for making same
Composite material comprising aluminum nitride (AlN) material, less than 80 weight percent cubic boron nitride (cBN) grains dispersed within the AlN material and less that 5 weight percent sinter promotion material, the composite material including no more than about 1.5 percent porosity.
C04B 35/5831 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxides based on borides, nitrides or silicides based on boron nitride based on cubic boron nitride
C04B 35/581 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxides based on borides, nitrides or silicides based on aluminium nitride
PCBN material consisting of cBN grains dispersed in a matrix, the content of the cBN grains being in the range of about 35 to about 70 volume % of the PCBN material. The matrix comprises at least one kind of chemical compound that includes aluminum (Al) and at least one kind of chemical compound that includes titanium (Ti). The size distribution of the cBN grains exposed at a surface of the PCBN material is such that at least about 50% percent of the total equivalent circle area (ECA) arises from cBN intercept lengths up to 5 microns. At least about 20 percent of the total ECA arises from cBN intercept lengths greater than about 5 microns.
C04B 35/5831 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxides based on borides, nitrides or silicides based on boron nitride based on cubic boron nitride
A support structure (40) for a PCD element (10) comprises a support (42) into which a PCD element (10) is locatable and a sealing element (48) for location in the support structure (40) and configured to protect a non-leached portion of a PCD element (10) during a leaching process. The support (42) is formed from or coated with a polyketone based plastics material.
B01J 19/02 - Apparatus characterised by being constructed of material selected for its chemically-resistant properties
B24D 18/00 - Manufacture of grinding tools, e.g. wheels, not otherwise provided for
C04B 41/91 - After-treatment of mortars, concrete, artificial stone or ceramicsTreatment of natural stone of only ceramics involving the removal of part of the materials of the treated articles, e.g. etching
C04B 41/53 - After-treatment of mortars, concrete, artificial stone or ceramicsTreatment of natural stone involving the removal of part of the materials of the treated article
B01J 3/03 - Pressure vessels, or vacuum vessels, having closure members or seals specially adapted therefor
B01J 3/06 - Processes using ultra-high pressure, e.g. for the formation of diamondsApparatus therefor, e.g. moulds or dies
11.
Diamond grains, method for making same and mixture comprising same
A method of providing well-shaped diamond grains of at most about 100 microns in size. The method includes providing a synthesis assembly comprising a source of carbon material, a plurality of seed grains on which diamond material can crystallize, and solvent-catalyst material for promoting the crystallization of the diamond grains, and subjecting the synthesis assembly to a condition for growing the diamond grains. The synthesis condition is maintained long enough for at least about half of the carbon material to be converted into the diamond grains.
B24D 3/02 - Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special natureAbrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent
B24D 18/00 - Manufacture of grinding tools, e.g. wheels, not otherwise provided for
A polycrystalline super hard construction has a body of PCD material and a plurality of interstitial regions between inter-bonded diamond grains forming the PCD material. The body also has a first region substantially free of a solvent/catalyzing material which extends a depth from a working surface into the body of PCD material. A second region remote from the working surface includes solvent/catalyzing material in a plurality of the interstitial regions. A chamfer extends between the working surface and a peripheral side surface of the body of PCD material. The chamfer has a height which is the length along a plane perpendicular to the plane along which the working surface extends between the point of intersection of the chamfer with the working surface and the point of intersection of the chamfer and the peripheral side surface of the body of PCD material. The depth of the first region is greater than the height of the chamfer. A first length along a plane extending from the point of intersection of the chamfer and the peripheral side edge of the PCD body at an angle of between around 65 to 75 degrees to the interface between the first and second regions is between around 60% to around 300% of the depth of the first region.
B24D 3/02 - Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special natureAbrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent
B24D 3/06 - Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special natureAbrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially inorganic metallic
B22F 3/24 - After-treatment of workpieces or articles
B22F 5/00 - Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
A polycrystalline superhard construction comprises a body of polycrystalline superhard material having two or more layers. A first layer differs from a second layer in one or more characteristics. The body has a thickness of greater than around 1.8 mm. A substrate is bonded to at least one of said layers, and one of the interface surface of the substrate or the body comprises one or more projections arranged to project from the interface surface, the height of the projection(s)being between around 0.2mm to around 2.0mm measured from the lowest point on the interface surface from which the one or more projections extend. At least a portion of the body of superhard material is substantially free of a catalyst material for the superhard material, and forms a thermally stable region extending a depth of at least around 300 microns from the working surface of the body of superhard material.
C04B 37/00 - Joining burned ceramic articles with other burned ceramic articles or other articles by heating
E21B 4/00 - Drives for drilling, used in the borehole
E21B 10/573 - Button-type inserts with preformed cutting elements mounted on a distinct support, e.g. polycrystalline inserts characterised by support details, e.g. the substrate construction or the interface between the substrate and the cutting element
A superhard construction comprises a substrate (10) comprising a peripheral surface, an interface surface (18) and a longitudinal axis and a super hard material layer (12) formed over the substrate and having an exposed outer surface forming a working surface (14), a peripheral surface extending therefrom and an interface surface. One of the interface surface of the substrate or the interface surface of the super hard material layer comprises one or more projections (24, 26) arranged to project from the interface surface, the height of the one or more projections being between around 0.2mm to around 1.0mm measured from the lowest point on the interface surface from which the one or more projections extend.
E21B 10/573 - Button-type inserts with preformed cutting elements mounted on a distinct support, e.g. polycrystalline inserts characterised by support details, e.g. the substrate construction or the interface between the substrate and the cutting element
B22F 5/00 - Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
A polycrystalline superhard construction comprises a body (20, 51, 52) of polycrystalline diamond material, a working surface (34), a first region (51) substantially free of a solvent/catalysing material, the first region extending a depth (Y) from the working surface into the body along a plane substantially perpendicular to the plane along which the working surface extends, and a second region (52) remote from the working surface that includes solvent/catalysing material in a plurality of interstitial regions. A substrate (30) is attached to the body along an interface (24) with the second region. A chamfer extends between the working surface and a peripheral side surface of the body. The depth of the first region tapers towards the working surface at the intersection of the first region with the peripheral side surface such that the depth (Υ') of the first region at the peripheral side surface is less than the depth of the majority of the first region.
E21B 10/573 - Button-type inserts with preformed cutting elements mounted on a distinct support, e.g. polycrystalline inserts characterised by support details, e.g. the substrate construction or the interface between the substrate and the cutting element
A method of making a cutter structure (1) comprises placing a pre-formed body (4) of hard material having a surface topography in a canister, placing an aggregated mass of grains of superhard material (2) over said surface topography, placing a punch (10) in contact with the superhard material (2), the punch (10) having a surface with a surface topography inverse to that of the hard material body to imprint a pattern in the superhard material (2) complementary to the surface topography of the punch (10). The surface of the punch (10) contacting the superhard material (2) being formed of a ceramic material that does not react chemically with the superhard material (12) and/or a sinter catalyst for the superhard material (2). A pressure of greater than 3 GPa is then together with a temperature sufficiently high for the catalyst to melt to form the cutter structure (1) with a layer of polycrystalline superhard material bonded to the hard material and having a surface topography corresponding to the surface topography of the hard material.
B01J 3/06 - Processes using ultra-high pressure, e.g. for the formation of diamondsApparatus therefor, e.g. moulds or dies
B24D 18/00 - Manufacture of grinding tools, e.g. wheels, not otherwise provided for
B22F 3/00 - Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sinteringApparatus specially adapted therefor
B22F 3/14 - Both compacting and sintering simultaneously
B22F 7/06 - Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting of composite workpieces or articles from parts, e.g. to form tipped tools
E21B 10/567 - Button-type inserts with preformed cutting elements mounted on a distinct support, e.g. polycrystalline inserts
E21B 10/573 - Button-type inserts with preformed cutting elements mounted on a distinct support, e.g. polycrystalline inserts characterised by support details, e.g. the substrate construction or the interface between the substrate and the cutting element
B24D 3/00 - Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special natureAbrasive bodies or sheets characterised by their constituents
E21B 10/54 - Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of the rotary drag type, e.g. fork-type bits
B22F 3/24 - After-treatment of workpieces or articles
B22F 5/00 - Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
A sealing member for location in a support structure for a PCD element during processing is configured to protect a non-leached portion of a PCD element during a process to remove residual catalyst/binder from interstices in the PCD element. The sealing member is formed from or coated with one or more of a peroxide-cured terpolymer, a fluorocarbon polymer, or a fluoropolymer elastomer comprising copolymers of hexafluoropropylene and vinylidene fluoride, terpolymers of tetrafluoroethylene, vinylidene fluoride and hexafluoropropylene, and/or perfluoromethylvinylether. A support structure comprising such a sealing member and a method of processing a body of polycrystalline diamond are also disclosed.
A method of making a construction comprising a polycrystalline super-hard structure joined to a side surface of an elongate substrate. The method includes: providing a vessel configured for an ultra-high pressure, high temperature furnace, the vessel having an elongate cavity for containing a pre-sinter assembly and defining a longitudinal axis, the cavity having opposite ends connected by a cavity wall. The pre-sinter assembly comprises the substrate, an aggregation comprising a plurality of super-hard grains arranged over at least a part of the side surface of the substrate, and a spacer structure configured for spacing the substrate apart from the cavity wall. The spacer structure comprises material having a Young's modulus of at least 300 GPa. The method further includes inserting the pre-sinter assembly into the cavity, the substrate being substantially longitudinally aligned and the spacer structure arranged between the side surface of the substrate and the cavity wall; applying a force to the pre-sinter assembly and heating it to a temperature, the force being sufficient to generate a pressure within the vessel for sintering the aggregation at the temperature, and providing the construction.
B28B 3/02 - Producing shaped articles from the material by using pressesPresses specially adapted therefor wherein a ram exerts pressure on the material in a moulding spaceRam heads of special form
B22F 3/14 - Both compacting and sintering simultaneously
B22F 7/06 - Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting of composite workpieces or articles from parts, e.g. to form tipped tools
B23C 5/10 - Shank-type cutters, i.e. with an integral shaft
B23P 15/34 - Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools milling cutters
C04B 35/52 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxides based on carbon, e.g. graphite
C04B 35/5831 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxides based on borides, nitrides or silicides based on boron nitride based on cubic boron nitride
A cartridge assembly having a chamber for containing hydraulic fluid, an intensifier element capable of reciprocating in the chamber and displacing the hydraulic fluid responsive to a drive system acting on the intensifier element, and a piston capable of reciprocating in the chamber and being displaceable responsive to a change in the pressure of the hydraulic fluid. The cartridge assembly is configured so that when the pressure in the fluid increases responsive to a first force being applied by the drive system on the intensifier, the hydraulic fluid will exert a second force on the piston, the second force being greater than the first force; the mass of the hydraulic fluid being substantially conserved within the cartridge assembly.
F15B 15/08 - Fluid-actuated devices for displacing a member from one position to anotherGearing associated therewith characterised by the construction of the motor unit
B30B 11/02 - Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses or tabletting presses using a ram exerting pressure on the material in a moulding space
B30B 1/32 - Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by plungers under fluid pressure
B01J 3/06 - Processes using ultra-high pressure, e.g. for the formation of diamondsApparatus therefor, e.g. moulds or dies
B30B 11/00 - Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses or tabletting presses
26.
Polycrystalline superhard material and method for making same
A method of making a body of polycrystalline superhard material comprising placing an aggregated mass of grains of superhard material into a canister, placing a ceramic layer either in direct contact with the aggregated mass of grains of superhard material or in indirect contact therewith, the ceramic layer being spaced from the grains by an interlayer of material when present, the ceramic layer having a surface with surface topology, the surface topology imprinting a pattern in the aggregated mass of grains of superhard material complementary to the surface topology, the ceramic material and the material of the interlayer being such that they do not react chemically with the superhard material and/or a sinter catalyst material for the grains of superhard material. The aggregated mass of grains of superhard material and ceramic layer are subjected to a pressure of greater than 5.5 GPa and sintered to form a body of polycrystalline superhard material having a surface topology complementary to the surface topology of the ceramic layer. The ceramic layer and interlayer if present are then removed from the body of polycrystalline material. There is also disclosed a body of polycrystalline superhard material having a surface topology on a first surface, the first surface being substantially free of material from a canister used in formation of the body of polycrystalline superhard material.
B01J 3/06 - Processes using ultra-high pressure, e.g. for the formation of diamondsApparatus therefor, e.g. moulds or dies
B24D 18/00 - Manufacture of grinding tools, e.g. wheels, not otherwise provided for
B22F 7/08 - Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting of composite workpieces or articles from parts, e.g. to form tipped tools with one or more parts not made from powder
C04B 35/52 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxides based on carbon, e.g. graphite
C04B 35/5831 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxides based on borides, nitrides or silicides based on boron nitride based on cubic boron nitride
B24D 3/00 - Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special natureAbrasive bodies or sheets characterised by their constituents
B22F 5/00 - Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
27.
MILLING TOOLS, METHOD FOR MAKING SAME AND METHOD OF USING SAME
A milling tool (10) having a longitudinal axis (A) about which the milling tool (10) will rotate in use, comprising a tool body (14) on which a plurality of cutter assemblies (16) are arranged azimuthally, each cutter assembly (16) comprising a plurality of super-hard cutter segments (12) attached to the tool body (14) in an axial arrangement, each cutter segment (12) having a cutting edge (13); in which the tool body (10) and the cutter segments (12) are configured such that the cutting edges(13) define a mean cut diameter of at least 6 (six) millimetres (mm) and a cut length of at least 1.5 times the mean cut diameter.
A construction comprising a sintered polycrystalline super-hard layer having mutually opposite reinforced boundaries, each of which is bonded to a respective reinforcement structure, in which the super-hard layer comprises polycrystalline diamond (PCD) material or polycrystalline cubic boron nitride (PCBN) material. The construction will be configured such that the equivalent circle diameter of each reinforced boundary is at least ten times the mean thickness of the super-hard layer between them. The reinforcement structures will be substantially free of material having a melting point of less than 2,000 degrees Celsius, at least adjacent the reinforced boundaries.
C04B 35/52 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxides based on carbon, e.g. graphite
C04B 37/00 - Joining burned ceramic articles with other burned ceramic articles or other articles by heating
29.
Cutting elements including polycrystalline diamond compacts for earth-boring tools
Methods of forming a polycrystalline diamond compact for use in an earth-boring tool include forming a body of polycrystalline diamond material including a first material disposed in interstitial spaces between inter-bonded diamond crystals in the body, removing the first material from interstitial spaces in a portion of the body, selecting a second material promoting a higher rate of degradation of the polycrystalline diamond compact than the first material under similar elevated temperature conditions and providing the second material in interstitial spaces in the portion of the body. Methods of drilling include engaging at least one cutter with a formation and wearing a second region of polycrystalline diamond material comprising a second material faster than the first region of polycrystalline diamond material comprising a first material. Polycrystalline diamond compacts and earth-boring tools including such compacts.
B24D 3/10 - Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special natureAbrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially inorganic metallic for porous or cellular structure, e.g. for use with diamonds as abrasives
PCBN material comprising at least 30 volume per cent cubic boron nitride (cBN) grains (10) bonded together by a matrix comprising aluminium nitride (20), and a plurality of regions (30) comprising boron and aluminium atoms, in which regions there are at least 15 times more boron atoms than aluminium atoms present. The regions comprise an aluminium boride phase of the inorganic chemical formula Al xBy, where x is at least 0.8 and at most 1.2, and y is at least 15, the ratio y:x being at least 15. The cubic boron nitride ceramic has been made by mixing cBN and Al grains and sintering at at least 1500 degrees Celcius and 4.5 GPa.
C04B 35/5831 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxides based on borides, nitrides or silicides based on boron nitride based on cubic boron nitride
C04B 35/63 - Preparing or treating the powders individually or as batches using additives specially adapted for forming the products
A method for treating a super-hard structure, the method including heating the super-hard structure to a treatment temperature of at least 500 degrees centigrade and cooling the super-hard structure from the treatment temperature to a temperature of less than 200 degrees centigrade at a mean cooling rate of at least 1 degree centigrade per second and at most 100 degrees centigrade per second to provide a treated super-hard structure. A PCBN structure produced by the method may have flexural strength of at least 650 MPa.
B24D 3/02 - Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special natureAbrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent
C04B 35/52 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxides based on carbon, e.g. graphite
C04B 35/5831 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxides based on borides, nitrides or silicides based on boron nitride based on cubic boron nitride
B24D 18/00 - Manufacture of grinding tools, e.g. wheels, not otherwise provided for
C01B 21/064 - Binary compounds of nitrogen with metals, with silicon, or with boron with boron
32.
COMPOSITE MATERIAL, ARTICLES COMPRISING SAME AND METHOD FOR MAKING SAME
Composite material comprising aluminium nitride (AlN) material, less than 80 weight per cent cubic boron nitride (cBN) grains dispersed within the AlN material and less that 5 weight per cent sinter promotion material, the composite material including no more than about 1.5 per cent porosity.
C04B 35/581 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxides based on borides, nitrides or silicides based on aluminium nitride
C04B 35/5831 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxides based on borides, nitrides or silicides based on boron nitride based on cubic boron nitride
33.
PCBN MATERIAL, METHOD FOR MAKING SAME, TOOLS COMPRISING SAME AND METHOD OF USING SAME
PCBN material consisting of cBN grains dispersed in a matrix, the content of the cBN grains being in the range of about 35 to about 70 volume % of the PCBN material. The matrix comprises at least one kind of chemical compound that includes aluminium (Al) and at least one kind of chemical compound that includes titanium (Ti). The size distribution of the cBN grains exposed at a surface of the PCBN material is such that at least about 50% per cent of the total equivalent circle area (ECA) arises from cBN intercept lengths up to 5 microns. At least about 20 per cent of the total ECA arises from cBN intercept lengths greater than about 5 microns.
C04B 35/5831 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxides based on borides, nitrides or silicides based on boron nitride based on cubic boron nitride
34.
FRIABILITY TESTING METHOD FOR SUPER-ABRASIVE GRAINS
A method of measuring an aggregate strength indication of a test sample comprising a plurality of super-abrasive grains having an aggregate mass. The method includes measuring the size frequency distribution of the super-abrasive grains and providing a friability tester apparatus, which comprises a drive mechanism, a crusher ball, and a capsule having an enclosable cavity for containing the test sample and the crusher ball. The capsule is configured such that the capsule can be moved at a cyclically varying speed for a number of cycles by the drive mechanism. An energy indication value is calculated as an integration over a full cycle of the square of the speed of the capsule, in metres per second,multiplied by half the mass of the crusher ball, in kilograms,multiplied by the number of cycles, divided by the aggregate mass of the grit sample, in grams. The method include enclosing the test sample and the crusher ball within the cavity;subjecting the capsule to the motion, such that the energy indication value is at least about 2 and at most about 50 ("Joules" per gram), to produce a comminuted sample;measuring the size frequency distribution of the comminuted sample; and calculating the aggregate strength indication based on the size frequency distributions of both the comminuted sample and the test sample.
B02C 17/00 - Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
G01N 3/56 - Investigating resistance to wear or abrasion
G01N 15/00 - Investigating characteristics of particlesInvestigating permeability, pore-volume or surface-area of porous materials
G01N 15/02 - Investigating particle size or size distribution
Polycrystalline compacts including diamond nanoparticles, cutting elements and earth- boring tools including such compacts, and methods of forming same
A polycrystalline compact includes a plurality of diamond grains of micron size, submicron size, or both, and a plurality of diamond nanoparticles disposed in interstitial spaces between the plurality of diamond grains. A method of forming a polycrystalline compact includes combining a plurality of micron and/or submicron-sized diamond grains and a plurality of diamond nanoparticles to form a mixture and sintering the mixture in a presence of a carburized binder to form a polycrystalline hard material having a plurality of inter-bonded diamond grains and diamond nanoparticles. Cutting elements including a polycrystalline compact and earth-boring tools bearing such compacts are also disclosed.
C04B 35/528 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxides based on carbon, e.g. graphite obtained from carbonaceous particles with or without other non-organic components
C04B 35/532 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxides based on carbon, e.g. graphite obtained from carbonaceous particles with or without other non-organic components containing a carbonisable binder
E21B 10/573 - Button-type inserts with preformed cutting elements mounted on a distinct support, e.g. polycrystalline inserts characterised by support details, e.g. the substrate construction or the interface between the substrate and the cutting element
36.
ROLLER BEARING ASSEMBLY AND ELEMENTS THEREOF, AND METHOD OF MAKING A ROLLER ELEMENT
A roller bearing assembly comprises a roller element comprising a roller bearing surface defined by a super-hard structure,and a race element comprising a race bearing surface, which may optionally also be defined by a super-hard surface. The race element and the roller element are configured such that the roller element can roll through at least one complete revolution about an axis of rolling rotation, throughout which rolling movement the roller bearing surface abuts the race bearing surface. The super-hard structure is configured such that the roller element is capable of supporting a load of at least 4,500 Newtons applied onto the roller bearing surface. A roller element is also described, and a method of making the roller element. The roller bearing assembly and roller element exhibit enhance wear resistance and find application, for example, in apparatus for boring into the earth, such as in roller cone bits, and in gear boxes, pumps compressors, milling apparatus and the like.
F16C 19/26 - Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for radial load mainly with a single row of rollers
37.
Cutter structures, inserts comprising same and method for making same
A method of making a cutter structure comprising super-hard material defining a rake face topology is provided. The method includes providing a pre-sinter assembly comprising a substrate body having a formation surface defining a topology complementary to the rake face topology, and an aggregation comprising a plurality of super-hard grains, the aggregation disposed adjacent the formation surface of the substrate body, the substrate body comprising a source of catalyst or binder material capable of promoting the sintering of the super-hard grains at a pressure and temperature at which the super-hard material is thermodynamically stable; subjecting the pre-sinter assembly to the pressure and temperature to provide a sintered polycrystalline super-hard structure joined to the formation surface of the substrate body at a first major boundary of the super-hard structure and having a second major boundary surface opposite the formation surface; removing the substrate body to expose the first major boundary of the super-hard structure defining the rake face topology. Cutter inserts and machine tools are also provided.
A support structure (40) for a PCD element comprises a support (42) into which a plurality of PCD elements are locatable, and a plurality of sealing elements (48) for location in the support structure. Each sealing element (48) is configured to protect a non-leached portion of an associated PCD element during a leaching process, said support being formed from or coated with a polyketone based plastics material. A plurality of support structures (42) may be stacked on top of each other and a central support rod (52) is locatable in a central aperture (50) extending though the stack of support structures (42). A handle (54) may be attached to the central support rod (52) for ease of transporting the assembled support structure.
A tip for twist drill, comprising a super-hard structure joined to a substrate at an interface boundary coterminous with an end of the substrate, the super-hard structure comprising sintered polycrystalline material comprising super-hard grains, the super-hard structure defining a super-hard end surface opposite the interface boundary and a plurality of cutting edges configured for boring into a body in use; the super-hard end surface including a center point or chisel edge, and comprising a plurality of surface regions configured such that respective planes tangential to each of the surface regions are disposed at substantially different angles from the axis of rotation of the tip in use. Precursor constructions for use in manufacturing the tips as well as methods for making the precursor constructions and the tips are disclosed.
A support structure (40) for a PCD element (10) comprises a support (42) into which a PCD element (10) is locatable and a sealing element (48) for location in the support structure (40) and configured to protect a non-leached portion of a PCD element (10) during a leaching process. The support (42) is formed from or coated with a polyketone based plastics material.
A method for making a treated super-hard structure, the method including providing a super-hard structure comprising super-hard material selected from polycrystalline cubic boron nitride (PCBN) material or thermally stable polycrystalline diamond (PCD) material; subjecting the super-hard structure to heat treatment at a treatment temperature of greater than 700 degrees centigrade at a treatment pressure at which the super-hard material is not thermodynamically stable, for a treatment period of at least about 5 minutes to produce the treated super-hard structure.
C04B 37/00 - Joining burned ceramic articles with other burned ceramic articles or other articles by heating
C03B 29/00 - Reheating glass products for softening or fusing their surfacesFire-polishingFusing of margins
C04B 35/52 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxides based on carbon, e.g. graphite
C04B 35/56 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxides based on carbides
C04B 35/58 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxides based on borides, nitrides or silicides
C04B 35/581 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxides based on borides, nitrides or silicides based on aluminium nitride
C04B 35/5831 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxides based on borides, nitrides or silicides based on boron nitride based on cubic boron nitride
E21B 10/46 - Drill bits characterised by wear resisting parts, e.g. diamond inserts
B24D 11/00 - Constructional features of flexible abrasive materialsSpecial features in the manufacture of such materials
B24D 3/02 - Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special natureAbrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent
B22F 7/00 - Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting
C22C 32/00 - Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
C21D 1/00 - General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
B22F 1/00 - Metallic powderTreatment of metallic powder, e.g. to facilitate working or to improve properties
C22C 1/04 - Making non-ferrous alloys by powder metallurgy
B22F 5/00 - Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
42.
DIAMOND GRAINS, METHOD FOR MAKING SAME AND MIXTURE COMPRISING SAME
A method of providing well-shaped diamond grains of at most about 100 microns in size. The method includes providing a synthesis assembly comprising a source of carbon material, a plurality of seed grains on which diamond material can crystallise, and solvent-catalyst material for promoting the crystallisation of the diamond grains, and subjecting the synthesis assembly to a condition for growing the diamond grains. The synthesis condition is maintained long enough for at least about half of the carbon material to be converted into the diamond grains.
A polycrystalline super hard construction comprising a body of polycrystalline diamond (PCD) material and a plurality of interstitial regions between inter-bonded diamond grains forming the polycrystalline diamond material; the body of PCD material comprises a working surface positioned along an outside portion of the body; a first region substantially free of a solvent/catalysing material; a second region remote from the working surface that includes solvent/ catalysing material in a plurality of the interstitial regions; and a substrate attached to the second region along an interface. The first region extends a depth from the working surface and the thickness of the second region between the interface with the substrate and an interface with the first region is between around 20 microns to around 200 microns at one or more points along the interface with the substrate.
B01J 3/06 - Processes using ultra-high pressure, e.g. for the formation of diamondsApparatus therefor, e.g. moulds or dies
B30B 11/00 - Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses or tabletting presses
C04B 35/20 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on silicates other than clay rich in magnesium oxide
C04B 35/63 - Preparing or treating the powders individually or as batches using additives specially adapted for forming the products
A method of making a construction comprising a diamond body joined to carrier body, the method including disposing chromium adjacent a surface of diamond material comprised in the diamond body, and joining the diamond body to the carrier body by means of braze material, in an atmosphere containing oxygen.
B23K 35/32 - Selection of soldering or welding materials proper with the principal constituent melting at more than 1550°C
B22F 1/02 - Special treatment of metallic powder, e.g. to facilitate working, to improve properties; Metallic powders per se, e.g. mixtures of particles of different composition comprising coating of the powder
B24D 3/06 - Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special natureAbrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially inorganic metallic
B23K 35/02 - Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
B24D 18/00 - Manufacture of grinding tools, e.g. wheels, not otherwise provided for
An earth-boring drilling tool comprises a cutting element. The cutting element comprises a substrate, a diamond table, and at least one sensing element formed from a doped diamond material disposed at least partially within the diamond table. A method for determining an at-bit measurement for an earth-boring drill bit comprises receiving an electrical signal generated within a doped diamond material disposed within a diamond table of a cutting element of the earth-boring drill bit, and correlating the electrical signal with at least one parameter during a drilling operation.
An earth-boring drilling tool comprises a cutting element. The cutting element comprises a substrate, a diamond table, and at least one sensing element formed from a doped diamond material disposed at least partially within the diamond table. A method for determining an at-bit measurement for an earth-boring drill bit comprises receiving an electrical signal generated within a doped diamond material disposed within a diamond table of a cutting element of the earth-boring drill bit, and correlating the electrical signal with at least one parameter during a drilling operation.
A method of forming an instrumented cutting element comprises forming a free standing sintered diamond table having at least one chamber in the free standing sintered diamond table, providing a doped diamond material within the at least one chamber, and attaching a substrate to the free standing sintered diamond table to form an instrumented cutting element. The instrumented cutting element includes the doped diamond material disposed within the sintered diamond table on the substrate. A method of forming an earth-boring tool comprises attaching at least one instrumented cutting element to a body of an earth-boring tool. The at least one instrumented cutting element has a diamond table bonded to a substrate. The diamond table has at least one sensing element disposed at least partially within the diamond table. The at least one sensing element comprises a doped diamond material.
A bit for a rotary drill, the bit including a cylindrical body having at least two flutes provided therein, the cylindrical body terminating in a cutting end; and a cylindrical land defined by a peripheral face of the cylindrical body between adjacent flutes, the cylindrical land including a margin that is radially elevated relative to a remainder of the cylindrical land; the margin having a width that varies along the length of the cylindrical land.
A method of making a cutter structure (1) comprises placing a pre-formed body (4) of hard material having a surface topography in a canister, placing an aggregated mass of grains of superhard material (2) over said surface topography, placing a punch (10) in contact with the superhard material (2), the punch (10) having a surface with a surface topography inverse to that of the hard material body to imprint a pattern in the superhard material (2) complementary to the surface topography of the punch (10). The surface of the punch (10) contacting the superhard material (2) being formed of a ceramic material that does not react chemically with the superhard material (12) and/or a sinter catalyst for the superhard material (2). A pressure of greater than 3 GPa is then together with a temperature sufficiently high for the catalyst to melt to form the cutter structure (1) with a layer of polycrystalline superhard material bonded to the hard material and having a surface topography corresponding to the surface topography of the hard material.
B22F 3/14 - Both compacting and sintering simultaneously
B22F 7/06 - Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting of composite workpieces or articles from parts, e.g. to form tipped tools
A method of making a tool element comprising a plurality of abrasive grains dispersed in a matrix material, each abrasive grain having an aspect ratio substantially greater than 1, in which the abrasive grains are non-randomly oriented with respect to one another; the method including: combining the abrasive grains with binder material and precursor material from which the matrix material can be formed, to provide a paste body in which the abrasive grains are substantially randomly oriented; extending the paste body along two mutually orthogonal dimensions to provide a precursor structure in which the abrasive grains are substantially non- randomly oriented with respect to each other; at least partly removing or transforming binder material and treating the precursor structure to transform the precursor material into matrix material and providing the tool element.
B24D 3/00 - Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special natureAbrasive bodies or sheets characterised by their constituents
B24D 18/00 - Manufacture of grinding tools, e.g. wheels, not otherwise provided for
52.
CUTTING ELEMENTS FOR EARTH-BORING TOOLS, EARTH-BORING TOOLS INCLUDING SUCH CUTTING ELEMENTS, AND RELATED METHODS
Cutting elements for earth-boring tools include one or more recesses and/or one or more protrusions in a cutting face of a volume of superabrasive material. The superabrasive material may be disposed on a substrate. The cutting face may be non- planar. The recesses and/or protrusions may include one or more linear segments. The recesses and/or protrusions may comprise discrete features that are laterally isolated from one another. The recesses and/or protrusions may have a helical configuration. The volume of superabrasive material may comprise a plurality of thin layers, at least two of which may differ in at least one characteristic. Methods of forming cutting elements include the formation of such recesses and/or protrusions in and/or on a cutting face of a volume of superabrasive material. Earth-boring tools include such cutting elements, and methods of forming earth-boring tools include attaching such a cutting element to a tool body.
A twist drill assembly (10) comprising a shaft (30) and a drill tip (20); the shaft having a single internal shaft conduit (34) for a fluid, extending between orifices (36, 37) formed into the shaft; the drill tip having an internal drill tip conduit (22) for the fluid, extending between orifices formed into the drill tip; the shaft and the drill tip configured such that the drill tip is connectable to an end of the shaft with the internal drill tip conduit in communication with the internal shaft conduit, allowing the fluid to be capable of flowing from the internal shaft conduit into the internal drill tip conduit; the internal shaft conduit having a spiral form aligned with a central longitudinal axis of the shaft, and configured to complement the arrangement of spiral flutes (38) formed on the shaft.
A method of making a construction for an indexable cutter insert, the method including providing a wafer (20) comprising ceramic material, the wafer (20) being substantially unsupported by a cemented carbide substrate and having a mean thickness of at most 2 mm; providing an insert base (30) having proximate and distal major ends (33, 34) connected by peripheral sides (36), the proximate end (33) of the insert base (30) being configured to have at least two corners (35) defined by junctions of the peripheral sides (36); the wafer (20) being configured to have at least two corners (25) corresponding to the two corners (35) of the proximate end (33) of the insert base (30); the method including bonding the wafer (20) to the proximate end (33) by means of a bond material, the corners (25) of the wafer (20) being disposed adjacent the corresponding corners (35) of the proximate end (33) to provide the construction.
B32B 37/00 - Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
B32B 37/10 - Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using direct action of vacuum or fluid pressure
B32B 37/12 - Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
B32B 38/00 - Ancillary operations in connection with laminating processes
A method of making a construction comprising a polycrystalline super-hard structure joined to a side surface of an elongate substrate. The method includes: providing a vessel configured for an ultra-high pressure, high temperature furnace, the vessel having an elongate cavity for containing a pre-sinter assembly and defining a longitudinal axis, the cavity having opposite ends connected by a cavity wall. The pre-sinter assembly comprises the substrate, an aggregation comprising a plurality of super-hard grains arranged over at least a part of the side surface of the substrate, and a spacer structure configured for spacing the substrate apart from the cavity wall. The spacer structure comprises material having a Young's modulus of at least 300 GPa. The method further includes inserting the pre-sinter assembly into the cavity, the substrate being substantially longitudinally aligned and the spacer structure arranged between the side surface of the substrate and the cavity wall; applying a force to the pre-sinter assembly and heating it to a temperature, the force being sufficient to generate a pressure within the vessel for sintering the aggregation at the temperature, and providing the construction.
B22F 3/14 - Both compacting and sintering simultaneously
B23C 5/10 - Shank-type cutters, i.e. with an integral shaft
B22F 7/06 - Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting of composite workpieces or articles from parts, e.g. to form tipped tools
B23P 15/34 - Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools milling cutters
A method of manufacturing a plurality of synthetic diamond crystals, the method including providing a reaction compact comprising a plurality of diamond seed particles dispersed within a matrix comprising a carbon source and catalyst material; in which the combined surface area of the diamond seed particles is at least 0.01 square cm per cubic cm of the reaction compact volume; the method further including subjecting the reaction compact to an ultra-high pressure and high temperature at which the catalyst material is molten and diamond is more thermodynamically stable than the carbon source, for a sufficient period of time to grow the diamond crystals on the diamond seed particles; and treating the reaction compact to recover the diamond crystals.
A press assembly (100) for pressurising a body, comprising a cartridge (300) for generating a load on the body, a frame (200) comprising a bore for accommodating the cartridge, a chamber for accommodating the body and a fastening mechanism (400) for fastening the cartridge to the frame when the cartridge is inserted into the bore; the bore having an open proximate end into which the cartridge can be inserted and the bore being in communication with the chamber at a distal end. The fastening mechanism is located outside the bore.
B30B 11/00 - Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses or tabletting presses
B30B 15/02 - DiesInserts therefor or mountings thereofMoulds
A cartridge assembly comprising a chamber for containing hydraulic fluid, an intensifier element capable of reciprocating in the chamber and displacing the hydraulic fluid responsive to a drive means acting on the intensifier element, and a piston capable of reciprocating in the chamber and being displaceable responsive to a change in the pressure of the hydraulic fluid. The cartridge assembly is configured so that when the pressure in the fluid increases responsive to a first force being applied by the drive means on the intensifier, the hydraulic fluid will exert a second force on the piston, the second force being greater than the first force; the mass of the hydraulic fluid being substantially conserved within the cartridge assembly.
B30B 11/00 - Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses or tabletting presses
59.
POLYCRYSTALLINE SUPERHARD MATERIAL AND METHOD FOR MAKING SAME
A method of making a body of polycrystalline superhard material comprising placing an aggregated mass of grains of superhard material into a canister, placing a ceramic layer either in direct contact with the aggregated mass of grains of superhard material or in indirect contact therewith, the ceramic layer being spaced from the grains by an interlayer of material when present, the ceramic layer having a surface with surface topology, the surface topology imprinting a pattern in the aggregated mass of grains of superhard material complementary to the surface topology, the ceramic material and the material of the interlayer being such that they do not react chemically with the superhard material and/or a sinter catalyst material for the grains of superhard material. The aggregated mass of grains of superhard material and ceramic layer are subjected to a pressure of greater than 5.5 GPa and sintered to form a body of polycrystalline superhard material having a surface topology complementary to the surface topology of the ceramic layer. The ceramic layer and interlayer if present are then removed from the body of polycrystalline material. There is also disclosed a body of polycrystalline superhard material having a surface topology on a first surface, the first surface being substantially free of material from a canister used in formation of the body of polycrystalline superhard material.
B22F 7/06 - Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting of composite workpieces or articles from parts, e.g. to form tipped tools
B23B 27/14 - Cutting tools of which the bits or tips are of special material
B23P 15/28 - Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools
B23P 15/30 - Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools lathes or like tools
E21B 10/567 - Button-type inserts with preformed cutting elements mounted on a distinct support, e.g. polycrystalline inserts
60.
PCBN material, tool elements comprising same and method for using same
PCBN material consisting essentially of cubic boron nitride (cBN) grains and binder material, the content of the cBN grains being at least 80 weight percent of the PCBN material; the binder material comprising greater than 50 weight percent Al and a combined content of at least 5 weight percent of an iron group element and a refractory element, the iron group element selected from the group consisting of Co, Fe, Ni and Mn, and the refractory element selected from the group consisting of W, Cr, V, Mo, Ta, Ti, Hf and Zr.
C04B 35/5831 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxides based on borides, nitrides or silicides based on boron nitride based on cubic boron nitride
C22C 29/14 - Alloys based on carbides, oxides, borides, nitrides or silicides, e.g. cermets, or other metal compounds, e. g. oxynitrides, sulfides based on borides
C22C 29/16 - Alloys based on carbides, oxides, borides, nitrides or silicides, e.g. cermets, or other metal compounds, e. g. oxynitrides, sulfides based on nitrides
B26D 1/00 - Cutting through work characterised by the nature or movement of the cutting memberApparatus or machines thereforCutting members therefor
A method for making a cutter element, the method including combining a plurality of super-hard grains, a powder source of bond material for bonding the super-hard grains in the cutter element, and a fluid medium to form a paste, in which the content of the super-hard grains is sufficient for the content of the super-hard grains in the cutter element to be at least about 3 volume per cent. The paste is introduced into an extrusion device and extruded to form a green body, which is sintered to provide the cutter element. In some examples, the cutter element may be for a saw blade or drill bit.
B22F 3/20 - Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sinteringApparatus specially adapted therefor by extruding
B24D 3/06 - Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special natureAbrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially inorganic metallic
A polycrystalline diamond construction comprises diamond grains exhibiting inter-granular bonding and defining a plurality of interstitial regions, and a non-diamond phase at least partially filling a plurality of the interstitial regions to form non-diamond pools. The percentage of non-diamond phase in the total area of a cross-section of the body of polycrystalline diamond material is between around 0 to 5 %, and the average nearest neighbour distance between grains of the non-diamond phase is less than around 1.3 microns in an analysed image of a cross-section through the body of polycrystalline material when analysed using an image analysis technique at a magnification of around 1000 and an image area of 1280 by 960 pixels; or is between around 5 to 10 %, and the average nearest neighbour distance between grains of the non-diamond phase is less than around 1.04 microns, or is between around 10 to 15 %, and the average nearest neighbour distance between grains of the non-diamond phase is less than around 1.04 microns, or is between around 15 to 30%, and the average nearest neighbour distance between grains of the non-diamond phase is less than around 0.8 microns.
C04B 35/52 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxides based on carbon, e.g. graphite
A polycrystalline diamond construction comprises diamond grains exhibiting inter-granular bonding and defining a plurality of interstitial regions, and anon- diamond phase at least partially filling a plurality of the interstitial regions to form non-diamond pools. The percentage of non-diamond phase in the total area of a cross-section of the body of polycrystalline diamond material is between around 0 to 5 %, and the average non-diamond phase Euler number is less than around 4000 as determined from an analysed image of a cross- section through the body of polycrystalline material when analysed using an image analysis technique at a magnification of around 1000 and an image area of 1280 by 960 pixels,or is between around 5 to 10 %, and the average non-diamond phase Euler number is greater than around 1600 or less than around 1200, or is between around 10 to 15 %, and the average non-diamond phase Euler number is less than around 2000,or is between around 15 to 30%, and the average non-diamond phase Euler number is less than around 2000.
C04B 35/52 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxides based on carbon, e.g. graphite
A superhard element (22) for a machine tool, comprising polycrystalline cubic boron nitride (PCBN) material containing whiskers of a ceramic material, the PCBN material comprising at least about 50 volume percent cubic boron nitride (cBN) material dispersed in a binder matrix comprising a compound including titanium and the whiskers; the content of the whiskers being at least 1 weight percent and at most 6 weight percent of the binder matrix.
C04B 35/5831 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxides based on borides, nitrides or silicides based on boron nitride based on cubic boron nitride
C04B 35/80 - Fibres, filaments, whiskers, platelets, or the like
65.
Superhard tool tip, method for making same and tool comprising same
A tip (20) for a rotary machine tool comprising a superhard structure (12) joined to a cemented carbide substrate 14 by means of at least one intermediate layer (161, 62, 163) disposed between the superhard structure (12) and the cemented carbide substrate (14), the intermediate layer or layers (161, 162, 163) comprising grains of superhard material and grains of a metal carbide material dispersed in a metal binder material.
B23B 27/14 - Cutting tools of which the bits or tips are of special material
B22F 7/06 - Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting of composite workpieces or articles from parts, e.g. to form tipped tools
B22F 7/08 - Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting of composite workpieces or articles from parts, e.g. to form tipped tools with one or more parts not made from powder
Polycrystalline diamond compacts for cutting tools and rock drilling tools, and more particularly to very fine polycrystalline diamond compacts with a grain growth inhibitor layer and reduced abnormal grain growth. A method of fabricating such polycrystalline diamond material includes placing a powder layer of nano-sized grain growth inhibitor particles next to a mixture of diamond particles having an average particle size of about 1 micron or less and sintering at high pressure and high temperature to create a polycrystalline structure of sintered diamond grains. The sintered diamond grains have an average size of about 1 micron or less.
B24D 3/10 - Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special natureAbrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially inorganic metallic for porous or cellular structure, e.g. for use with diamonds as abrasives
B23B 27/20 - Cutting tools of which the bits or tips are of special material with diamond bits
B23B 7/02 - Automatic or semi-automatic machines for turning of stock
E21B 10/46 - Drill bits characterised by wear resisting parts, e.g. diamond inserts
E21B 10/567 - Button-type inserts with preformed cutting elements mounted on a distinct support, e.g. polycrystalline inserts
E21B 10/573 - Button-type inserts with preformed cutting elements mounted on a distinct support, e.g. polycrystalline inserts characterised by support details, e.g. the substrate construction or the interface between the substrate and the cutting element
67.
Fine polycrystalline diamond compact with a grain growth inhibitor layer between diamond and substrate
Polycrystalline diamond compacts for cutting tools and rock drilling tools, and more particularly to very fine polycrystalline diamond compacts with a grain growth inhibitor layer and reduced abnormal grain growth. A method of fabricating such polycrystalline diamond material includes placing a powder layer of nano-sized grain growth inhibitor particles next to a mixture of diamond particles having an average particle size of about 1 micron or less and sintering at high pressure and high temperature to create a polycrystalline structure of sintered diamond grains. The sintered diamond grains have an average size of about 1 micron or less.
E21B 10/46 - Drill bits characterised by wear resisting parts, e.g. diamond inserts
E21B 10/55 - Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of the rotary drag type, e.g. fork-type bits with preformed cutting elements
B24D 99/00 - Subject matter not provided for in other groups of this subclass
B24D 18/00 - Manufacture of grinding tools, e.g. wheels, not otherwise provided for
B22F 3/14 - Both compacting and sintering simultaneously
B22F 7/06 - Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting of composite workpieces or articles from parts, e.g. to form tipped tools
A polycrystalline diamond construction comprising a body of polycrystalline diamond material is formed of a mass of diamond grains exhibiting inter- granular bonding and defining a plurality of interstitial regions therebetween, and a non-diamond phase at least partially filling a plurality of the interstitial regions to form non-diamond phase pools, the non-diamond phase pools each having an individual cross-sectional area. The percentage of non- diamond phase in the total area of a cross-section of the body of polycrystalline diamond material and the mean of the individual cross- sectional areas of the non-diamond phase pools in the image analysed using an image analysis technique at a selected magnification is less than 0.7, or less than 0.340 microns squared, or between around 0.005 to 0.340 microns squared depending on the percentage of non-diamond phase in the total area of the cross-section of the polycrystalline diamond construction. There is also disclosed a method of making such a construction.
E21B 10/567 - Button-type inserts with preformed cutting elements mounted on a distinct support, e.g. polycrystalline inserts
B22F 7/06 - Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting of composite workpieces or articles from parts, e.g. to form tipped tools
69.
CUTTER STRUCTURES, INSERTS COMPRISING SAME AND METHOD FOR MAKING SAME
A method of making a cutter structure comprising super-hard material defining a rake face topology is provided. The method includes providing a pre-sinter assembly comprising a substrate body having a formation surface defining a topology complementary to the rake face topology, and an aggregation comprising a plurality of super-hard grains, the aggregation disposed adjacent the formation surface of the substrate body, the substrate body comprising a source of catalyst or binder material capable of promoting the sintering of the super-hard grains at a pressure and temperature at which the super-hard material is thermodynamically stable; subjecting the pre-sinter assembly to the pressure and temperature to provide a sintered polycrystalline super-hard structure joined to the formation surface of the substrate body at a first major boundary of the super-hard structure and having a second major boundary surface opposite the formation surface; removing the substrate body to expose the first major boundary of the super-hard structure defining the rake face topology. Cutter inserts and machine tools are also provided.
A tip for twist drill, comprising a super-hard structure joined to a substrate at an interface boundary coterminous with an end of the substrate, the super-hard structure comprising sintered polycrystalline material comprising super-hard grains, the super-hard structure defining a super-hard end surface opposite the interface boundary and a plurality of cutting edges configured for boring into a body in use; the super-hard end surface including a centre point or chisel edge, and comprising a plurality of surface regions configured such that respective planes tangential to each of the surface regions are disposed at substantially different angles from the axis of rotation of the tip in use. Precursor constructions for use in manufacturing the tips as well as methods for making the precursor constructions and the tips are disclosed.
A method for making a cutter construction comprising a cutter body joined to a carrier body, the method including providing the cutter body with a cutter coat structure, at least one of the carrier body and the cutter coat structure comprising a first material and the other comprising a second material, the first material having a lower melting point than the second material and being capable of wetting it, taking it into solution and reacting with it to produce a solid phase; heating the carrier body to above the melting point of the first material and contacting the cutter coat structure of the cutter body with the carrier body for a sufficient period for the first material to melt and for sufficient solid phase to form between the cutter body and the carrier body and join the cutter body to the carrier body; the heat being applied to the first and second materials via the carrier body.
B24D 3/06 - Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special natureAbrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially inorganic metallic
B24D 18/00 - Manufacture of grinding tools, e.g. wheels, not otherwise provided for
A method for treating a super-hard structure, the method including heating the super- hard structure to a treatment temperature of at least 500 degrees centigrade and cooling the super-hard structure from the treatment temperature to a temperature of less than 200 degrees centigrade at a mean cooling rate of at least 1 degree centigrade per second and at most 100 degrees centigrade per second to provide a treated super-hard structure. A PCBN structure produced by the method may have flexural strength of at least 650 MPa.
C04B 35/52 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxides based on carbon, e.g. graphite
C04B 35/5831 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxides based on borides, nitrides or silicides based on boron nitride based on cubic boron nitride
A method for making a treated super-hard structure, the method including providing a super-hard structure comprising super-hard material selected from polycrystalline cubic boron nitride (PCBN) material or thermally stable polycrystalline diamond (PCD) material; subjecting the super-hard structure to heat treatment at a treatment temperature of greater than 700 degrees centigrade at a treatment pressure at which the super-hard material is not thermodynamically stable, for a treatment period of at least about 5 minutes to produce the treated super-hard structure.
B24D 3/06 - Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special natureAbrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially inorganic metallic
C04B 41/00 - After-treatment of mortars, concrete, artificial stone or ceramicsTreatment of natural stone
A superhard construction comprises a substrate (10) and an ultra hard material layer (12) formed over the substrate. One of the interface surface (18) of the substrate or the interface surface of the ultra hard material layer comprises a plurality of spaced-apart projections (24, 26) arranged to project from the interface surface, the interface surface between the spaced-apart projections being uneven. A further superhard construction comprises a plurality of projections arranged to project from the interface surface which abut one or more adjacent projections along an edge thereof on the surface from which the projections project, and extend over all or a majority of the interface surface. One or more of the surfaces of all or a majority of the projections extend in one or more planes which are not substantially parallel to the plane of the exposed outer surface of the ultra hard material layer and/or in one or more planes which are not substantially parallel to a plane through which the central longitudinal axis of the substrate extends.
E21B 10/573 - Button-type inserts with preformed cutting elements mounted on a distinct support, e.g. polycrystalline inserts characterised by support details, e.g. the substrate construction or the interface between the substrate and the cutting element
75.
CONTAINMENT ELEMENT COMPRISING MULLITE OR A POLYMORPH OF MULLITE, ASSEMBLY COMPRISING SAME, METHOD OF MAKING SAME AND METHOD OF USING SAME
C04B 33/20 - Preparing or treating the raw materials individually or as batches for dry-pressing
C04B 35/63 - Preparing or treating the powders individually or as batches using additives specially adapted for forming the products
B30B 11/00 - Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses or tabletting presses
76.
CUBIC BORON NITRIDE CRYSTAL, BODIES COMPRISING SAME AND TOOLS COMPRISING SAME
A cubic boron nitride (cBN) crystal or plurality of crystals containing a chloride salt compound including an alkali metal or an alkali earth metal. For example, the chloride salt compound may be selected from potassium chloride, magnesium chloride, lithium chloride, calcium chloride or sodium chloride. The crystal or crystals may have a relatively rough surface texture.
C04B 35/5831 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxides based on borides, nitrides or silicides based on boron nitride based on cubic boron nitride
B01J 3/06 - Processes using ultra-high pressure, e.g. for the formation of diamondsApparatus therefor, e.g. moulds or dies
C01B 21/064 - Binary compounds of nitrogen with metals, with silicon, or with boron with boron
A superhard cutter element for machining a workpiece comprising wood, metal, ceramic material or composite material, the superhard cutter comprising a superhard structure (140) having a rake side (110) and a flank side (120), the rake side (110) and the flank side (120) enclosing a wedge angle ω; and a protective layer (170) bonded to the superhard structure (140) at a rake interface (180) on the rake side (110), the protective layer (170) being softer than the material of the superhard structure (140).
B23B 27/00 - Tools for turning or boring machinesTools of a similar kind in generalAccessories therefor
B23B 27/14 - Cutting tools of which the bits or tips are of special material
B22F 7/06 - Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting of composite workpieces or articles from parts, e.g. to form tipped tools
B23D 61/04 - Circular saw blades with inserted saw teeth
A method of manufacturing a bit for a rotary drill, the bit including a drill tip (30), the method including providing a precursor structure (10) comprising substrate body (14) and a super-hard structure (12) joined to an upper surface of the substrate body; cutting a plurality of conformal inserts (20) from the precursor structure (10), each insert (20) comprising a part of the super-hard structure; providing a drill tip (30) configured for receiving the insert (20); and joining the insert to the drill tip (30).
A bit for a rotary drill, the bit including a cylindrical body having at least two flutes provided therein, the cylindrical body terminating in a cutting end; and a cylindrical land defined by a peripheral face of the cylindrical body between adjacent flutes, the cylindrical land including a margin that is radially elevated relative to a remainder of the cylindrical land;the margin having a width that varies along the length of the cylindrical land.
The present disclosure relates to the formation of polycrystalline diamond materials with fine diamond grains and nano-sized particles of a grain growth inhibitor. In one embodiment, a method of fabricating a polycrystalline diamond material is provided. The method includes providing a mixture of diamond particles with an average particle size of about 1 micron or less, distributing a plurality of nano-sized titanium-containing particles with the diamond mixture, to act as a grain growth inhibitor, and sintering the mixture of diamond particles and titanium-containing particles at high pressure and high temperature to create a polycrystalline structure of sintered diamond grains. The sintered diamond grains have an average size of about 1 micron or less.
B24D 3/00 - Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special natureAbrasive bodies or sheets characterised by their constituents
B24D 3/02 - Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special natureAbrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent
B24D 11/00 - Constructional features of flexible abrasive materialsSpecial features in the manufacture of such materials
B24D 18/00 - Manufacture of grinding tools, e.g. wheels, not otherwise provided for
C04B 35/52 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxides based on carbon, e.g. graphite
Downhole tool bearings are provided with diamond-enhanced materials. The diamond-enhanced materials comprise diamond grains in a matrix of tungsten or silicon carbide or a silicon-bonded diamond material. A brazed diamond grit or diamond particles coated with a reactive braze may be utilized for bearing applications. Bearing rings for use in downhole tools may be formed at least in part with the diamond-enhanced material. In one embodiment, the bearing rings may be used in a positive displacement motor. In additional embodiments, the bearing rings may be used in a submersible pump.
F04B 39/00 - Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups
82.
Method for manufacturing encapsulated superhard material
A method of manufacturing encapsulated superhard material includes the steps of providing a source of superhard material, providing a mixture comprising an appropriate binder, a solvent or fluid medium and the intended coating or encapsulating layer, combining the superhard material and the mixture in a shovel rotor, the shovel rotor having a vessel including a rotor, the vessel adapted to receive a stream of gas. The rotor is rotated at an appropriate velocity such that the superhard material is encapsulated by the mixture.
Bearings for downhole tools including a first bearing member and a second bearing member, at least one of the first and second bearing members having a channel formed therein. Methods of cooling bearings of downhole tools comprise flowing a fluid within a channel formed in at least one bearing member. Heat is transferred from at least the at least one bearing member to the fluid. The fluid is flowed away from the at least one bearing member.
A twist drill assembly (10) comprising a shaft (30) and a drill tip (20); the shaft having a single internal shaft conduit (34) for a fluid, extending between orifices (36, 37) formed into the shaft; the drill tip having an internal drill tip conduit (22) for the fluid, extending between orifices formed into the drill tip; the shaft and the drill tip configured such that the drill tip is connectable to an end of the shaft with the internal drill tip conduit in communication with the internal shaft conduit, allowing the fluid to be capable of flowing from the internal shaft conduit into the internal drill tip conduit; the internal shaft conduit having a spiral form aligned with a central longitudinal axis of the shaft, and configured to complement the arrangement of spiral flutes (38) formed on the shaft.
The present disclosure relates to cubic boron nitride (cBN) cutting elements that have high cBN content and that are cuttable by electric discharge machining (EDM). A cutting element according to an embodiment includes a self-sintered polycrystalline cubic boron nitride (PCBN) compact, having a first phase of cubic boron nitride (cBN) particles and a ceramic binder phase with titanium compounds. The first phase occupies greater than 80% by volume of the self-sintered PCBN compact. The self-sintered PCBN compact has an electrical conductivity sufficient to be cuttable by electrical discharge machining.
A method of making a construction for an indexable cutter insert, the method including providing a wafer (20) comprising ceramic material, the wafer (20) being substantially unsupported by a cemented carbide substrate and having a mean thickness of at most 2 mm; providing an insert base (30) having proximate and distal major ends (33, 34) connected by peripheral sides (36), the proximate end (33) of the insert base (30) being configured to have at least two corners (35) defined by junctions of the peripheral sides (36); the wafer (20) being configured to have at least two corners (25) corresponding to the two corners (35) of the proximate end (33) of the insert base (30); the method including bonding the wafer (20) to the proximate end (33) by means of a bond material, the corners (25) of the wafer (20) being disposed adjacent the corresponding corners (35) of the proximate end (33) to provide the construction.
A process for the formation of pellets containing an ultra hard (superhard) core coated with an encapsulating material includes utilizing a shovel rotor in combination with a rotating pan and/or a fluidized bed apparatus in sequence. The process includes providing a source of superhard material, providing a mixture comprising a binder, a solvent or fluid medium and the intended coating or encapsulating layer, and combining the superhard material and the mixture in a shovel rotor. The rotor of the shovel rotor is rotated at a velocity such that the superhard material is encapsulated by the mixture to form pellets. The pellets are introduced into a rotating vessel or fluidized bed granulating apparatus, and the pellets are contacted with encapsulating material to form pellets of greater mass than the pellets introduced into the vessel.
PCBN material consisting essentially of cubic boron nitride (cBN) grains and binder material, the content of the cBN grains being at least 80 weight percent of the PCBN material; the binder material comprising greater than 50 weight percent Al and a combined content of at least 5 weight percent of an iron group element and a refractory element, the iron group element selected from the group consisting of Co, Fe, Ni and Mn, and the refractory element selected from the group consisting of W, Cr, V, Mo, Ta, Ti, Hf and Zr.
C04B 35/5831 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxides based on borides, nitrides or silicides based on boron nitride based on cubic boron nitride
A cutter element (100) for a rotary machine tool having an axis of rotation, the cutter element comprising a plurality of cutting edges (110) defined by at least one cutter structure (120) comprising superhard material, consecutive cutting edges being spaced apart by at most 10 mm and configured operable to cut a body when moved in a direction that is substantially non-aligned with the axis of rotation.
B23C 5/10 - Shank-type cutters, i.e. with an integral shaft
B23P 15/34 - Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools milling cutters
A method for making a polycrystalline diamond (PCD) construction comprises providing a cemented carbide substrate comprising carbide grains cemented together by a cement material, subjecting the substrate to a first pressure treatment, treating the substrate to remove at least some of the cement material from at least a region of the substrate adjacent a boundary defined by the substrate, and subjecting the substrate to a second pressure treatment, in contact with or bonded at the boundary to a diamondiferous structure.
B24D 3/00 - Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special natureAbrasive bodies or sheets characterised by their constituents
B01J 3/06 - Processes using ultra-high pressure, e.g. for the formation of diamondsApparatus therefor, e.g. moulds or dies
B24D 18/00 - Manufacture of grinding tools, e.g. wheels, not otherwise provided for
B24D 99/00 - Subject matter not provided for in other groups of this subclass
A method for making a polycrystalline diamond (PCD) construction comprises providing a cemented carbide substrate comprising carbide grains cemented together by a cement material, subjecting the substrate to a first pressure treatment, treating the substrate to remove at least some of the cement material from at least a region of the substrate adjacent a boundary defined by the substrate, and subjecting the substrate to a second pressure treatment, in contact with or bonded at the boundary to a diamondiferous structure.
E21B 10/573 - Button-type inserts with preformed cutting elements mounted on a distinct support, e.g. polycrystalline inserts characterised by support details, e.g. the substrate construction or the interface between the substrate and the cutting element
92.
SUPERHARD ELEMENT, METHOD OF USING SAME AND METHOD OF MAKING SAME
A superhard element (22) for a machine tool, comprising polycrystalline cubic boron nitride (PCBN) material containing whiskers of a ceramic material, the PCBN material comprising at least about 50 volume percent cubic boron nitride (cBN) material dispersed in a binder matrix comprising a compound including titanium and the whiskers; the content of the whiskers being at least 1 weight percent and at most 6 weight percent of the binder matrix.
C04B 35/5831 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxides based on borides, nitrides or silicides based on boron nitride based on cubic boron nitride
A tip (20) for a rotary machine tool comprising a superhard structure (12) joined to a cemented carbide substrate14by means of at least one intermediate layer (161, 62, 163) disposed between the superhard structure (12) and the cemented carbide substrate (14), the intermediate layer or layers (161, 162, 163) comprising grains of superhard material and grains of a metal carbide material dispersed in a metal binder material.
B22F 7/06 - Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting of composite workpieces or articles from parts, e.g. to form tipped tools
B22F 7/08 - Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting of composite workpieces or articles from parts, e.g. to form tipped tools with one or more parts not made from powder
A PCD structure comprising a first region, in a state of residual compressive stress, and a second region in a state of residual tensile stress adjacent the first region; the first and second regions each formed of respective PCD grades and directly bonded to each other by intergrowth of diamond grains, the PCD grades having transverse rupture strength (TRS) of at least 1,200 MPa. A third region in a state of residual compressive stress may also be provided such that the second region is disposed between the first and third regions and is bonded to the first and third regions by intergrowth of diamond grains.
B22F 7/06 - Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting of composite workpieces or articles from parts, e.g. to form tipped tools
E21B 10/567 - Button-type inserts with preformed cutting elements mounted on a distinct support, e.g. polycrystalline inserts
E21B 10/573 - Button-type inserts with preformed cutting elements mounted on a distinct support, e.g. polycrystalline inserts characterised by support details, e.g. the substrate construction or the interface between the substrate and the cutting element
A cutter insert assembly for a drill bit for boring into the earth, comprising a super-hard structure clampable to a support body by means of a clamp mechanism; the clamp mechanism comprising opposed or opposable compression members connected or connectable by a tension member capable of sustaining a clamping force between the compression members when the cutter insert assembly is in a clamped condition, in which condition the compression members exert opposing compressive forces on the super-hard structure and the support body, operable to clamp the super-hard structure to the support body, and in which condition the cutter insert assembly is self-supporting and capable of being mounted onto a drill bit body.
E21B 10/633 - Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable with plural detachable cutting elements independently detachable
A PCD composite compact comprising a PCD structure bonded at an interface to a substrate comprising cemented carbide material; the PCD structure comprising a mass of directly inter-bonded diamond grains having a mean size of at most about 4 microns, and the PCD structure comprising at least about 0.05 weight percent refractory metal or carbide of a refractory metal selected from the group comprising W, Ti, V, Cr, Zr, Nb, Mo, Hf and Ta; and at least the cemented carbide material proximate the interface having a content of metallic binder material of at most about 6 weight percent.
E21B 10/46 - Drill bits characterised by wear resisting parts, e.g. diamond inserts
B23B 5/16 - Turning-machines or devices specially adapted for particular workAccessories specially adapted therefor for bevelling, chamfering, or deburring the ends of bars or tubes
A PCD composite compact comprising a PCD structure bonded at an interface to a substrate comprising cemented carbide material; the PCD structure comprising a mass of directly inter-bonded diamond grains having a mean size of at most about 4 microns, and the PCD structure comprising at least about 0.05 weight percent refractory metal or carbide of a refractory metal selected from the group comprising W, Ti, V, Cr, Zr, Nb, Mo, Hf and Ta; and at least the cemented carbide material proximate the interface having a content of metallic binder material of at most about 6 weight percent.
C04B 37/00 - Joining burned ceramic articles with other burned ceramic articles or other articles by heating
C04B 35/56 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxides based on carbides
C04B 35/52 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxides based on carbon, e.g. graphite
B22F 3/14 - Both compacting and sintering simultaneously
B22F 7/06 - Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting of composite workpieces or articles from parts, e.g. to form tipped tools
A cutting element comprising a substrate having an upper surface, a rear surface spaced apart from the upper surface, and a side surface connected to the rear surface and upper surface. The cutting element further includes a superabrasive layer comprising a rear surface, an upper surface, and a side surface connected to and extending between the rear surface and upper surface, wherein the rear surface of the superabrasive layer overlies the upper surface of the substrate. The cutting element is also formed to include a jacket overlying the side surface of the substrate and abutting a portion of the rear surface of the superabrasive layer, wherein the jacket comprises a flange extending along a portion of the side surface of the superabrasive layer.
A polycrystalline diamond (PCD) composite compact element comprising a PCD structure bonded to a cemented carbide substrate, in which at least a peripheral region of the substrate comprises cemented carbide material having a mean free path (MFP) characteristic of at least about 0.1 microns and at most about 0.7 microns; and an elastic limit of at least about 1.9 GPa.
B22F 7/06 - Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting of composite workpieces or articles from parts, e.g. to form tipped tools
C22C 29/08 - Alloys based on carbides, oxides, borides, nitrides or silicides, e.g. cermets, or other metal compounds, e. g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds based on tungsten carbide
ELEMENT SIX (PRODUCTION)(PTY) LIMITED (South Africa)
Inventor
Scott, Danny Eugene
Schmitz, Kurtis Karl
Van Der Riet, Clement David
Can, Antionette
Abstract
A polycrystalline diamond (PCD) composite compact element 100 comprising a substrate 130, a PCD structure 120 bonded to the substrate 130, and a bond material in the form of a bond layer 140 bonding the PCD structure 120 to the substrate 130; the PCD structure 120 being thermally stable and having a mean Young's modulus of at least about 800 GPa, the PCD structure 120 having an interstitial mean free path of at least about 0.05 microns and at most about 1.5 microns; the standard deviation of the mean free path being at least about 0.05 microns and at most about 1.5 microns. Embodiments of the PCD composite compact element may be for a tool for cutting, milling, grinding, drilling, earth boring, rock drilling or other abrasive applications, such as the cutting and machining of metal.
C04B 35/52 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxides based on carbon, e.g. graphite
C04B 37/00 - Joining burned ceramic articles with other burned ceramic articles or other articles by heating
