Entries |
Document | Title | Date |
20080209818 | POLYCRYSTALLINE COMPOSITES REINFORCED WITH ELONGATED NANOSTRUCTURES - A sintered polycrystalline composite for cutting tools that includes a plurality of diamond or cubic boron nitride particles; a plurality of nanotube materials; and a refractory or binder material is disclosed. Methods of forming such polycrystalline composites that include integrating or mixing a plurality of nanotube materials with diamond or cubic boron nitride particle and/or refractory or binder particles are also disclosed. | 09-04-2008 |
20080222966 | Polycrystalline Diamond Abrasive Elements - A polycrystalline diamond abrasive element, particularly a cutting element, comprises a table of polycrystalline diamond bonded to a substrate, particularly a cemented carbide substrate, along a non-planar interface. The polycrystalline diamond abrasive element is characterised by the nonplanar interface having a cruciform configuration, the polycrystalline diamond having a high wear-resistance, and the polycrystalline diamond having a region adjacent the working surface lean in catalysing material and a region rich in catalysing material. The polycrystalline diamond cutters have improved wear resistance, impact strength and cutter life than prior art cutters. | 09-18-2008 |
20080236051 | AGGLOMERATE ABRASIVE GRAINS AND METHODS OF MAKING THE SAME - An abrasive agglomerate includes a plurality of abrasive grains bonded together in a three-dimensional structure by a substantially continuous, non-porous inorganic binder, wherein the abrasive grains have an average size of between about 0.5 microns and about 1500 microns, the inorganic binder is less than about 75 percent, by weight, of the abrasive agglomerate, and the bulk density of the abrasive agglomerate is less than about 90 percent of the bulk density of the abrasive grains. | 10-02-2008 |
20080250724 | High Impact Shearing Element - A high impact resistant tool having a sintered body of diamond or diamond-like particles in a metal matrix bonded to a cemented metal carbide substrate at a non planar interface, interface having at least two circumferentially adjacent faces, outwardly angled from a central axis of the substrate. The sintered body has a thickness of 0.100 to 0.500 inches proximate each face. The sintered body also has a flat working surface, wherein the tool has an angle of 30 to 60 degrees between the flat working surface and each face. | 10-16-2008 |
20080276544 | Cemented Carbides - The present invention provides a cemented carbide with superior strength and toughness by refining the WC in the alloy uniformly and by restricting the growth of coarse WC efficiently. In this cemented carbide, WC with a mean particle diameter of no more than 0.3 microns serves as a hard phase and at least one type of iron group metal element at 5.5-15 percent by mass serves as a binder phase. In addition to this hard phase and binder phase, this cemented carbide contains 0.005-0.06 percent by mass of Ti, Cr at a weight ratio relative to the binder phase of at least 0.04 and no more than 0.2, with the remaining portion being formed from inevitable impurities. In particular, this cemented carbide does not contain Ta. | 11-13-2008 |
20080313968 | Diamond Growth Devices and Methods - Growth precursors to form discrete superabrasive particles including associated methods are disclosed. Such growth precursor may include a crystalline seed, an initiation material, and a feed material. The initiation material may substantially encompass the crystalline seed, and may include a catalyst and a raw material source. The raw material source makes up less than 50 wt % of the initiation material. The feed material may contact the initiation material and may also include raw material source and catalyst. The catalyst may be present in less than 50 wt % in the feed material. In one aspect, the growth precursor may be configured to form diamond particles. | 12-25-2008 |
20090044458 | SYSTEM FOR INDICATING THE GRADE OF AN ABRASIVE - A system for indicating the nature of an abrasive surface that is determined by an abrasive with a regular pattern, at least a basic portion of which is repeated, which system comprises at least two different abrasive elements that each have an abrasive surface, wherein the basic portion of the pattern of the one abrasive surface has different dimensions to the basic portion of the pattern of the other abrasive surface. | 02-19-2009 |
20090056232 | CUBIC BORON NITRIDE COMPACT - A CBN compact comprises CBN and a matrix phase incorporating a secondary hard phase selected from TiCN, TiC, TiN and mixtures and solid solutions thereof and a maximum amount of titanium diboride where the XRD peak height of the ( | 03-05-2009 |
20090094902 | Grinding Tools that Contain Uniform Distribution of Abrasive Grits and Method of Manufacture Thereof - The present invention relates to a method of uniformly distributing abrasive grits on grinding tools. It can be applied in the cutting, grinding segments of diamond tools, which are typically used in cutting and drilling various hard and fragile materials, such as granite, marble, concrete, asphalt, etc. The present invention provides a template, the template designed based on the arranging requirement of abrasive particles such as diamond grits. The template can adsorb only a single layer of abrasive particles and is then placed onto a sheet, where the diamond grits are pressed into the sheet, with the diamond grits distributed uniformly on the sheet. | 04-16-2009 |
20090100765 | POLISHING SLURRY, METHOD OF PRODUCING SAME, AND METHOD OF POLISHING SUBSTRATE - Disclosed is a polishing slurry, particularly, a slurry for chemical mechanical polishing, which is used in a chemical mechanical polishing process for flattening a semiconductor laminate. More particularly, the present invention provides a method of producing a slurry which has high removal selectivity to a nitride layer used as a barrier film in a shallow trench isolation CMP process needed to fabricate ultra highly integrated semiconductors of 256 mega D-RAM or more (Design rule of 0.13 μm or less) and which decreases the occurrence of scratches on a flattened surface, and a method of polishing a substrate using the same. | 04-23-2009 |
20090120010 | Sintered Bead Based on Zirconia and on Cerium Oxide - A sintered bead presenting the following chemical analysis, in percentages by weight and for a total of 100%: ZrO | 05-14-2009 |
20090120011 | Composite Sintered Body - A composite sintered body according to the present invention contains at least cubic boron nitride and a binder. Cubic boron nitride has a continuous structure as a result of bonding of a plurality of cubic boron nitride particles to each other. The binder has a continuous structure as a result of bonding of a plurality of binder particles to each other, that are present in a region except for a bonding interface where the cubic boron nitride particles are bonded to each other. | 05-14-2009 |
20090145045 | Methods for Orienting Superabrasive Particles on a Surface and Associated Tools - Methods of making a superabrasive tool precursor are disclosed, along with such precursors and associated tools. Particularly, methods are disclosed for orienting superabrasive particles in a viscous binding material in order to provide tools based thereupon and having desired performance characteristics. | 06-11-2009 |
20090158670 | SUPERABRASIVE ELEMENT COMPRISING ULTRA-DISPERSED DIAMOND GRAIN STRUCTURES, STRUCTURES UTILIZING SAME, AND METHODS OF MANUFACTURE - Superabrasive elements, methods of fabricating such elements, and applications utilizing such elements. In one embodiment, a superabrasive element includes a mass of polycrystalline diamond including ultra-dispersed diamond grain structures present in an amount greater than zero weight percent and less than about 75 weight percent of the mass of polycrystalline diamond. Various structures and apparatuses that utilize the superabrasive elements, such as polycrystalline diamond compacts (PDCs) and drill bits are disclosed. Methods of manufacture are also disclosed. | 06-25-2009 |
20090173014 | POLYCRYSTALLINE ULTRA-HARD CONSTRUCTIONS WITH MULTIPLE SUPPORT MEMBERS - Polycrystalline ultra-hard constructions comprise a polycrystalline ultra-hard material body and two or more support members attached to the body by braze material. The support members include a backside support member and a side support member. The side support member is a one- or two-piece construction, and is positioned circumferentially around and extends axially along the body or both the body and the backside support member such that a working surface of the body remains exposed. The support members can be configured to provide a mechanical attachment or interlocking attachment with the body or another support member. The braze materials used in the construction can be different and selected to enhance the attachment and/or reduce the creation of thermal stress within the construction during assembly. The support members can be selected having different thermal expansion characteristics that also operate to reduce the thermal stress during construction assembly. | 07-09-2009 |
20090173015 | Polycrystalline Diamond Constructions Having Improved Thermal Stability - Polycrystalline diamond constructions include a diamond body comprising a matrix phase of bonded together diamond crystals formed at high pressure/high temperature conditions with a catalyst material. The sintered body is treated remove the catalyst material disposed within interstitial regions, rendering it substantially free of the catalyst material used to initially sinter the body. Accelerating techniques can be used to remove the catalyst material. The body includes an infiltrant material disposed within interstitial regions in a first region of the construction. The body includes a second region adjacent the working surface and that is substantially free of the infiltrant material. The infiltrant material can be a Group VIII material not used to initially sinter the diamond body. A metallic substrate is attached to the diamond body, and can be the same or different from a substrate used as a source of the catalyst material used to initially sinter the diamond body. | 07-09-2009 |
20090188170 | METHOD OF PRODUCING POLISHING MATERIAL COMPRISING DIAMOND CLUSTERS - Diamond clusters are used as a polishing material of free abrading particles, each being a combination of artificial diamond particles having primary particle diameters of 20 nm or less and impurities that are attached around these diamond particles. The density of non-diamond carbon contained in the impurities is in the range of 95% or more and 99% or less, and the density of chlorine contained in other than non-diamond carbon in the impurities is 0.5% or more and preferably 3.5% or less. The diameters of these diamond clusters are in the range of 30 nm or more and 500 nm or less, and their average diameter is in the range of 30 nm or more and 200 nm or less. Such polishing material is produced first by an explosion shock method to obtain diamond clusters and then removing the impurities such that density of non-diamond carbon contained in the impurities and density of chlorine contained in other than non-diamond carbon in the impurities become adjusted. | 07-30-2009 |
20090193721 | ABRASIVE PARTICLES, METHOD OF MANUFACTURING THE ABRASIVE PARTICLES, AND METHOD OF MANUFACTURING CHEMICAL MECHANICAL POLISHING SLURRY - Disclosed are abrasive particles, a method for manufacturing the abrasive particles, and a method for manufacturing a Chemical Mechanical Polishing (CMP) slurry. The method for manufacturing abrasive particles for the CMP slurry includes preparing a raw material precursor, drying the raw material precursor, and calcining the dried raw material precursor using a calcination furnace where a gas atmosphere having relatively less oxygen in comparison with an air atmosphere is created. | 08-06-2009 |
20090211167 | SLURRY FOR WIRE SAW - A wire saw slurry containing, in a dispersing medium, 0.01-1 wt % of a metal film forming substance or a chelating agent that forms a film over copper in the dispersing medium. Entry of copper into a wafer bulk is prevented by the metal film forming substance or the chelating agent capturing the copper leaching out from brass plating of wires. | 08-27-2009 |
20090272041 | METHOD OF MAKING A CBN COMPACT - A layer of a refractory material produced and bonded in situ to a surface of a CBN compact during the high temperature/high pressure manufacture of the CBN compact. | 11-05-2009 |
20090293369 | WIRE SAW SLURRY RECYCLING PROCESS - The present invention provides a method of recycling a water-based wire saw cutting slurry waste fluid comprising abrasive particles and waste solids in a water-based carrier. The method comprises the steps of (a) separating the waste fluid into a first fraction and a second fraction, the first fraction comprising recovered abrasive particles, and the second fraction comprising waste solids and a portion of the water-based carrier; (b) optionally, separating the second fraction to separate the waste solids from the water-based carrier to form a waste solids portion and a recovered water-based carrier portion; (c) optionally, drying the first fraction from step (a) and separating the resulting dried abrasive particles from smaller waste particles to produce a purified recovered abrasive fraction; and (d) suspending particles of the first fraction from step (a), the purified recovered abrasive fraction from step (c), or both, in a suspending medium comprising at least a portion of the recovered water-based carrier from step (b), to generate a recycled water-based wire saw cutting slurry. | 12-03-2009 |
20100043302 | ABRASIVE COMPACTS - An abrasive compact having at least a tri-modal particle size distribution, and a binder phase, define a plurality of interstices. The binder phase is distributed in the interstices to form binder pools that correspond substantially in average size to that of an ultrahard polycrystalline composite material having a monomodal particle size distribution and substantially the same overall average particle grain size. | 02-25-2010 |
20100083583 | CUTTING TOOL - One object of the present invention is to provide a cutting tool excellent in strength and wear resistance. The cutting tool has a cutting blade formed using a highly hard diamond polycrystalline body made substantially only of diamond and produced by directly converting a raw material composition including a non-diamond type carbon material into diamond and sintering the diamond at an ultra high pressure and an ultra high temperature without adding a sintering aid or a catalyst, the polycrystalline body having a mixed construction including fine-grained diamond crystals with a maximum grain size of less than or equal to 100 nm and an average grain size of less than or equal to 50 nm and plate-like or particulate coarse-grained diamond crystals with a minimum grain size of greater than or equal to 50 nm and a maximum grain size of less than or equal to 10000 nm. | 04-08-2010 |
20100146865 | POLYCRYSTALLINE DIAMOND - An object is to provide polycrystalline diamond applicable to diverse applications; and a water jet orifice, a stylus for gravure printing, a scriber, a diamond cutting tool, and a scribing wheel that include such polycrystalline diamond. This object is achieved by polycrystalline diamond obtained by converting and sintering non-diamond carbon under an ultrahigh pressure and at a high temperature without addition of a sintering aid or a catalyst, wherein sintered diamond grains constituting the polycrystalline diamond have an average grain diameter of more than 50 nm and less than 2500 nm and a purity of 99% or more, and the diamond has a D90 grain diameter of (average grain diameter+average grain diameter×0.9) or less. | 06-17-2010 |
20100146866 | Friction stir welding using a superabrasive tool - A probe for friction stir welding MMCs, ferrous alloys, non-ferrous alloys, and superalloys, as well as non-ferrous alloys, the probe including a shank, a shoulder, and a pin disposed through the shoulder and into the shank, wherein the pin and the shoulder at least include a coating comprised of a superabrasive material, the pin and shoulder being designed to reduce stress risers, disposing a collar around a portion of the shoulder and the shank to thereby prevent movement of the shoulder relative to the shank, and incorporating thermal management by providing a thermal flow barrier between the shoulder and the shank, and between the collar and the tool. | 06-17-2010 |
20100186302 | REGENERATING PROCESS AND REGENERATING SYSTEM TO REGENERATE WASTE SLURRY FROM SEMI-CONDUCTOR WAFER MANUFACTURING PROCESS - There are provided a method and a system for regenerating a waste slurry which is disused after a slurry has been used to raise the cutting efficiency in a process of fabricating various wafers, such as semiconductor wafers, solar wafers and others. The method for regenerating the waste slurry processes comprises: a waste slurry mixing step (S | 07-29-2010 |
20100192473 | THERMALLY STABLE POLYCRYSTALLINE DIAMOND MATERIALS, CUTTING ELEMENTS INCORPORATING THE SAME AND BITS INCORPORATING SUCH CUTTING ELEMENTS - A cutting element is provided including a substrate and a TSP material layer over the substrate. The TSP material layer includes at least a property having a value that varies through the layer. | 08-05-2010 |
20100199573 | ULTRAHARD DIAMOND COMPOSITES - The invention is for an ultrahard composite material comprising a diamond phase and a binder phase, the binder phase comprising a ternary carbide of the general formula Mx M′y C wherein; M is at least one metal selected from the group consisting of the transition metals and the rare earth metals, M′ is a metal selected from the group consisting of the main group metals or metalloid elements and the transition metals Zn and Cd, x is from 2.5 to 5.0, y is from 0.5 to 3.0 and z is from 0.1 to 1. The invention extends to a diamond abrasive compact comprising such an ultrahard composite material and to a tool comprising such a diamond abrasive compact. | 08-12-2010 |
20100223856 | ABRASIVE COMPACTS - An abrasive compact comprises an ultrahard polycrystalline composite material comprised of ultrahard abrasive particles having a multimodal size distribution and a binder phase. The ultrahard polycrystalline composite material defines a plurality of interstices, the binder phase being distributed in the interstices to form greater than an optimal threshold of binder pools per square micron. | 09-09-2010 |
20100242375 | Double Sintered Thermally Stable Polycrystalline Diamond Cutting Elements - Embodiments of the invention include a polycrystalline diamond compact comprising a plurality of double-sintered polycrystalline diamond segments. The polycrystalline diamond segments are configured to remain thermally stable at a first temperature. The polycrystalline diamond segments are positioned upon and bonded to a transition layer of single-sintered polycrystalline diamond that is configured to remain thermally stable at a second temperature lower than the first temperature. The transition layer is positioned upon and bonded to a substrate. Embodiments of the invention have improved thermally stability, resulting in fewer defects during manufacturing and improved longevity in use. | 09-30-2010 |
20100275523 | ABRASIVE COMPACTS - The invention is for a polycrystalline diamond abrasive compact comprising a primary polycrystalline diamond material of bonded diamond particles and a secondary polycrystalline diamond material interspersed through the primary polycrystalline diamond material or a region thereof. The invention is characterised in that the secondary polycrystalline diamond material comprises particulates or granules of thermally stable polycrystalline diamond material. The invention extends to an abrasive cutting element suitable for cutting or abrading a substrate or in drilling applications. | 11-04-2010 |
20100287845 | POLYCRYSTALLINE DIAMOND COMPOSITES - The invention is for a polycrystalfine diamond composite material comprising intergrown diamond particles and a binder phase, the binder phase comprising a tin-based intermetallic or ternary carbide compound formed with a metallic solvent/catalyst. The invention extends to a polycrystalline diamond abrasive compact comprising such a composite material and to a tool insert comprising such a diamond abrasive compact. | 11-18-2010 |
20100300004 | BORON SUBOXIDE COMPOSITE MATERIALS - The invention provides a boron suboxide composite material comprising boron suboxide and a secondary phase, wherein the secondary phase contains a boride. The boride may be selected from the borides of transition metals of the fourth to eighth groups of the periodic table. Particularly, the boride may be selected from the borides of iron, cobalt, nickel, titanium, tungsten, hafnium, tantalum, zirconium, rhenium, molybdenum or chromium. The boride also may be a platinum group metal boride, preferably palladium boride. The secondary phase also may contain one or more oxides. | 12-02-2010 |
20100307067 | ABRASIVE COMPACT - The invention relates to an abrasive compact comprising a mass of diamond particles and a silicon containing binder phase wherein the diamond particles are present in an amount less than 75 volume % and the binder phase contains less than 2 volume % unreacted (elemental) silicon. The invention further relates to a method of producing an abrasive compact including the steps of forming a feed diamond powder into a diamond preform, interposing a separating mechanism between the diamond preform and a silicon infiltrant source, heating the diamond preform and silicon infiltrant source until the infiltrant is molten and the preform and infiltrant are isothermal and allowing infiltration from the molten silicon infiltrant source to occur into the diamond preform. | 12-09-2010 |
20110041413 | ABRASIVE TOOL HAVING A PARTICULAR POROSITY VARIATION - An abrasive tool has a body including an abrasive portion having abrasive grains contained within a matrix material, and a first reinforcing member contained within the abrasive portion, wherein the body comprises a porosity variation difference through at least half of a thickness of the body of not greater than 250% from a mean porosity of the body. | 02-24-2011 |
20110225896 | METHODS OF FABRICATING POLYCRYSTALLINE DIAMOND ELEMENTS AND COMPACTS USING SP2-CARBON-CONTAINING PARTICLES - Methods of fabricating polycrystalline diamond elements and compacts using sp | 09-22-2011 |
20110232199 | Process for Production of Dispersion of Fluorinated Nano Diamond - There is provided a process for producing a fluorinated nanodiamond dispersion liquid, including a purification step of mixing a fluorinated nanodiamond with an alcohol having a carbon number of 4 or fewer, then conducting an ultrasonic treatment to produce a suspension, and subjecting the obtained suspension to a classification treatment by centrifugation to produce a dispersion liquid of fluorinated nanodiamond; a drying step to prepare a dry fluorinated nanodiamond by removing the alcohol from the dispersion liquid of fluorinated nanodiamond that is obtained by the purification step; and a redispersion step to prepare the fluorinated nanodiamond dispersion liquid by mixing the dry fluorinated nanodiamond that is obtained by the drying step, with an aprotic polar solvent and then conducting an ultrasonic treatment. | 09-29-2011 |
20110232200 | MANUFACTURE OF THERMALLY STABLE CUTTING ELEMENTS - A method of forming a thermally stable cutting element that includes disposing at least a portion of a polycrystalline abrasive body containing a catalyzing material to be leached into a leaching agent; and subjecting the polycrystalline abrasive object to an elevated temperature and pressure is disclosed. Thermally stable cutting elements and systems and other methods for forming thermally stable cutting elements are also disclosed. | 09-29-2011 |
20110271604 | METHOD OF BONDING POLY-CHRYSTALLINE DIAMONDS TO WEAR SURFACES - A method of bonding poly-crystalline diamonds to a wear surface, using commercially available poly-crystalline diamond cutters having poly-crystalline diamond buttons bonded to a carbide core. The poly-crystalline diamond cutters are cooled with cryogenic liquid. The poly-crystalline diamond cutters are crushed to form poly-crystalline diamond cutter fragments, with each of the fragments having a poly-crystalline diamond button fragment still bonded to a carbide core fragment. The carbide core fragment is then bonded onto the wear surface, such that the wear surface includes poly-crystalline diamond buttons fragments. | 11-10-2011 |
20110283628 | POLYCRYSTALLINE DIAMOND - 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. | 11-24-2011 |
20110289855 | Superabrasive Cutting Element and Manufacturing Method with High Degree of Control of Distribution and Crystallographic Orientation of the Micro Cutting Edges - An abrasive element comprises a body of crystalline abrasive material. The body has an array of cutting elements formed of crystalline abrasive material which projects from a surface of the body. The shape, size and form of the projections is controlled in the production process. The body may be a natural or synthetic crystal. The body may be a film formed by deposition. The body may be diamond or cubic boron nitride. The body may be monocrystalline or polycrystalline. The projections may be aligned along a crystallographic plane or planes. | 12-01-2011 |
20120066981 | SIALON SINTERED BODY AND CUTTING INSERT - The present invention provides a technique of improving wear resistance of a Sialon sintered body. The Sialon sintered body has a Sialon phase including at least a β-Sialon and a 12H-Sialon among an α-Sialon, the β-Sialon and the 12H-Sialon. A ratio of a second Sialon total content, which is a sum of the contents of the α-Sialon and the 12H-Sialon, to a first Sialon total content, which is a sum of contents of the α-Sialon, the β-Sialon and the 12H-Sialon, is greater than 20% and not greater than 55%, and a ratio of the content of the 12H-Sialon to the first Sialon total content is not less than 2% and not greater than 55%. | 03-22-2012 |
20120131856 | FABRICATION OF ULTRAFINE POLYCRYSTALLINE DIAMOND WITH NANO-SIZED GRAIN GROWTH INHIBITOR - 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. | 05-31-2012 |
20120151847 | PROTECTIVE SYSTEM FOR LEACHING POLYCRYSTALLINE DIAMOND ELEMENTS - The disclosure provides to a PDC element protective system including a mask configured to protect a non-leached portion of a leached polycrystalline diamond compact (PDC) element during a leaching process. The mask may be formed from or coated with polytetrafluoroethylene (PTFE). The disclosure also provides a leaching system containing such a mask and a leaching vessel as well as methods of using the protective and leaching systems. The disclosure further provides a Lewis acid-based leaching agent and methods of its use. Finally, the disclosure provides a method of recycling a PDC or carbide element using a Lewis acid-based leaching agent. | 06-21-2012 |
20120167480 | SURFACE ETCHED DIAMOND PARTICLES AND METHOD FOR ETCHING THE SURFACE OF DIAMOND PARTICLES - A method is provided of etching a diamond particle including the step of heating the particle at a temperature of about 700° C. or greater in the presence of water vapor to form an etched particle. Also provided is an etched particle having a core and a surface. The core is formed of sp3 hybridized carbon atoms covalently bonded together, and the surface has substantially no chlorine atoms, oxygen atoms or oxygen species. | 07-05-2012 |
20120186160 | METHOD FOR MODIFICATION OF CEMENTED CARBIDES AND CEMENTED CARBIDES MODIFIED BY THE METHOD - Provided are a method of modifying a cemented carbide and a cemented carbide modified by the method. Particularly provided is an advantageous method of modifying a cemented carbide layer formed by a thermal spraying method on a surface of a metal substrate. The method of modifying a cemented carbide includes applying a friction stir process to a cemented carbide, thereby allowing crystal grains in a binder phase included in the cemented carbide to become finer. It is possible to achieve modification effectively by applying the friction stir process particularly to a cemented carbide layer formed on a surface of a metal substrate by using the thermal spraying method. | 07-26-2012 |
20120227332 | DEEP LEACH PRESSURE VESSEL FOR SHEAR CUTTERS - A system for producing thermally stable cutting elements may include a heat source, a pressure vessel, at least one polycrystalline diamond body attached to a carbide substrate, and a leaching agent is disclosed, wherein the heat source includes a container comprising at least one receiving mechanism and at least one retention mechanism, and wherein the carbide substrate is disposed in the at least one receiving mechanism of the pressure vessel, and wherein the leaching agent is disposed in the pressure vessel, and wherein the leaching agent removes the catalyzing material from the interstitial spaces interposed between the diamond particles of the at least one polycrystalline diamond body, and wherein the at least one retention mechanism of the pressure vessel seals at least a portion of the carbide substrate into the at least one receiving mechanism and prevents the leaching agent from contacting at least a portion of the carbide substrate. | 09-13-2012 |
20120255236 | HIGH-HARDNESS CONDUCTIVE DIAMOND POLYCRYSTALLINE BODY AND METHOD OF PRODUCING THE SAME - A diamond sintered body conventionally used in a cutting tool or the like includes an iron group metal element as a sintering aid, and therefore has a problem in heat resistance. A diamond sintered body not including the iron group metal, on the other hand, does not have sufficient mechanical strength to be used as a tool material, and also does not have conductivity, which makes electrical discharge machining impossible, and thus processing thereof is difficult. A diamond polycrystalline body having high heat resistance and mechanical strength and having conductivity enabling electrical discharge machining is obtained by using only an amorphous or fine graphite-type carbon material as a starting material, adding boron thereto and concurrently performing conversion into diamond and sintering in an ultra-high pressure and temperature condition. | 10-11-2012 |
20120304545 | NANO-DIAMOND DISPERSION SOLUTION AND METHOD FOR PREPARING SAME - The present invention relates to a nano-diamond dispersion solution and a method of preparing the same. The method of preparing a nano-diamond dispersion solution comprises the following steps: providing a nano-diamond aggregation; mixing the nano-diamond aggregation with a metal hydroxide solution and stirring the mixture such that the nano-diamond aggregation is separated, to obtain a mixture solution; stabilizing the mixture solution such that the mixture solution is separated into a supernatant and precipitates; and extracting the supernatant and precipitates. | 12-06-2012 |
20120324800 | METHOD FOR PRODUCING ABRASIVE GRAINS, METHOD FOR PRODUCING SLURRY, AND METHOD FOR PRODUCING POLISHING LIQUID - In the production method for abrasive grains according to the invention, an aqueous solution of a salt of a tetravalent metal element is mixed with an alkali solution, under conditions such that a prescribed parameter is 5.00 or greater, to obtain abrasive grains including a hydroxide of the tetravalent metal element. | 12-27-2012 |
20130000213 | TOOL MADE OF CUBIC BORON NITRIDE SINTERED BODY - A tool made of a cubic boron nitride sintered body which has a long life in a stable manner in any application of cutting and plastic working is provided. The tool made of the cubic boron nitride sintered body according to the present invention includes a cubic boron nitride sintered body at least at a tool working point and it is characterized by satisfying an Equation (I) and any one of an Equation (II) and an Equation (III) | 01-03-2013 |
20130008093 | POLYCRYSTALLINE COMPACTS HAVING MATERIAL DISPOSED IN INTERSTITIAL SPACES THEREIN, CUTTING ELEMENTS AND EARTH-BORING TOOLS INCLUDING SUCH COMPACTS, AND METHODS OF FORMING SUCH COMPACTS - Polycrystalline compacts include smaller and larger hard grains that are interbonded to form a polycrystalline hard material. The larger grains may be at least about 150 times larger than the smaller grains. An interstitial material comprising one or more of a boride, a carbide, a nitride, a metal carbonate, a metal bicarbonate, and a non-catalytic metal may be disposed between the grains. The compacts may be used as cutting elements for earth-boring tools such as drill bits, and may be disposed on a substrate. | 01-10-2013 |
20130055645 | ELEMENT CONTAINING THERMALLY STABLE POLYCRYSTALLINE DIAMOND MATERIAL AND METHODS AND ASSEMBLIES FOR FORMATION THEREOF - The disclosure provides a super abrasive element containing a substantially catalyst-free thermally stable polycrystalline diamond (TSP) body having pores and a contact surface, a base adjacent the contact surface of the TSP body; and an infiltrant material infiltrated in the base and in the pores of the TSP body at the contact surface. The disclosure additionally provides earth-boring drill bits and other devices containing such super abrasive elements. The disclosure further provides methods and mold assemblies for forming such super abrasive elements via infiltration and hot press methods. | 03-07-2013 |
20130067825 | METHODS OF FORMING POLYCRSTALLINE COMPACTS AND RESULTING COMPACTS - Methods for forming cutting elements, methods for forming polycrystalline compacts, and related polycrystalline compacts are disclosed. Grains of a hard material are subjected to a high pressure, high temperature process to form a polycrystalline compact. Inclusion of at least one relatively quick spike in system pressure or temperature during an otherwise plateaued temperature or pressure stage accommodates formation of inter-granular bonds between the grains. The brevity of the peak stage may avoid undesirable grain growth. Embodiments of the methods may also include at least one of oscillating at least one system condition (e.g., pressure, temperature) and subjecting the grains to ultrasonic or mechanical vibrations. A resulting polycrystalline compact may include a high density of inter-granularly bonded hard material with a minimized amount of catalyst material, and may provide improved thermal stability, wear resistance, toughness, and behavior during use of a cutting element incorporating the polycrystalline compact. | 03-21-2013 |
20130067826 | Polycrystalline Diamond Compacts Having Improved Wear Characteristics, and Method of Making the Same - A method of making a polycrystalline diamond compact includes mixing a diamond particle feed with a binder to form a mixture, forming the mixture into a precompact, heating the pre-compact in a non-oxidizing atmosphere to substantially drive off the binder, oxidizing the pre-compact in an oxidizing atmosphere at a temperature and for a time sufficient to burn off non-diamond carbon without overoxidizing diamond, and sintering the pre-compact at high pressure and high temperature to form a polycrystalline diamond compact. The method may also include oxidizing the diamond particle feed prior to mixing with the binder. | 03-21-2013 |
20130067827 | POLYCRYSTALLINE DIAMOND MATERIALS HAVING IMPROVED ABRASION RESISTANCE, THERMAL STABILITY AND IMPACT RESISTANCE - PCD materials comprise a diamond body having bonded diamond crystals and interstitial regions disposed among the crystals. The diamond body is formed from diamond grains and a catalyst material at high pressure/high temperature conditions. The diamond grains have an average particle size of about 0.03 mm or greater. At least a portion of the diamond body has a high diamond volume content of greater than about 93 percent by volume. The entire diamond body can comprise high volume content diamond or a region of the diamond body can comprise the high volume content diamond. The diamond body includes a working surface, a first region substantially free of the catalyst material, and a second region that includes the catalyst material. At least a portion of the first region extends from the working surface to depth of from about 0.01 to about 0.1 mm | 03-21-2013 |
20130086847 | COMBINED FIELD ASSISTED SINTERING TECHNIQUES AND HTHP SINTERING TECHNIQUES FOR FORMING POLYCRYSTALLINE DIAMOND COMPACTS AND EARTH-BORING TOOLS, AND SINTERING SYSTEMS FOR PERFORMING SUCH METHODS - Methods of forming polycrystalline diamond compacts include employing field assisted sintering techniques with high temperature and high pressure sintering techniques. For example, a particle mixture that includes diamond particles may be sintered by subjecting the particle mixture to a high temperature and high pressure sintering cycle, and pulsing direct electrical current through the particle mixture during at least a portion of the high temperature and high pressure sintering cycle. The polycrystalline diamond compacts may be used to form cutting elements for earth-boring tools. Sintering systems are configured to perform such sintering processes. | 04-11-2013 |
20130104461 | COATING MATERIAL, COATING AND COATED OBJECT | 05-02-2013 |
20130139445 | LIQUID FILTRATION METHOD - Disclosed is a filtration method that extends filter life and achieves high filtration efficiency, and also abrasive slurry produced by the method. In this filtration method, a filter is decompression-treated in a solvent-filled sealed container before liquid is filtered by the filter, after which the filter is used for filtering. | 06-06-2013 |
20130145698 | Polycrystalline Abrasive Compacts - A method of manufacturing polycrystalline abrasive elements consisting of micron, sub-micron or nano-sized ultrahard abrasives dispersed in micron, sub-micron or nano-sized matrix materials. A plurality of ultrahard abrasive particles having vitreophilic surfaces are coated with a matrix precursor material in a refined colloidal process and then treated to render them suitable for sintering. The matrix precursor material can be converted to an oxide, nitride, carbide, oxynitride, oxycarbide, or carbonitride, or an elemental form thereof. The coated ultrahard abrasive particles are consolidated and sintered at a pressure and temperature at which they are crystallographically or thermodynamically stable. | 06-13-2013 |
20130152481 | SURFACE COATED CUTTING TOOL - A surface coated cutting tool with a high level of both wear resistance and defect resistance in balance is provided. The surface coated cutting tool of the present invention includes a base material, and a coat film formed on the base material. The coat film includes at least one titanium carbonitride layer. The titanium carbonitride layer has a maximum value for an orientational index TC (220) among texture coefficients TC (hkl). When an indentation hardness of a standard block for hardness is Hs and an indentation hardness of the titanium carbonitride layer is Ht, the average value of the relative hardness Ht/Hs for a plurality of times of measurement is greater than or equal to 3. The difference between the maximum value Ht | 06-20-2013 |
20130192144 | DIAMOND TOOLS - A method comprising: selecting a diamond material; irradiating the diamond material with neutrons to increase toughness and/or wear resistance of the diamond material; and processing the diamond material into one or more diamond tool pieces, wherein the irradiating comprises irradiating the diamond material with neutrons having an energy in the range 1.0 keV to 12 MeV, wherein the irradiating comprises controlling energy and dosage of irradiation to provide the diamond material with a plurality of isolated vacancy point defects, the isolated vacancy point defects having a concentration in a range 1×10 | 08-01-2013 |
20130199105 | SHAPED ABRASIVE PARTICLE AND METHOD OF FORMING SAME - A method of forming a mixture including a ceramic material into a sheet, sectioning at least a portion of the sheet using a mechanical object and forming at least one shaped abrasive particle from the sheet, such that the at least one shaped abrasive particle can have a two-dimensional shape as viewed in a plane defined by a length and a width of the shaped abrasive particle selected from the group consisting of polygons, ellipsoids, numerals, Greek alphabet characters, Latin alphabet characters, Russian alphabet characters, complex shapes having a combination of polygonal shapes, and a combination thereof. | 08-08-2013 |
20130205680 | DIAMOND TOOLS - A method comprising: selecting a diamond material; irradiating the diamond material with electrons to increase toughness and/or wear resistance of the diamond material; and processing the diamond material into one or more diamond tool pieces, wherein the irradiating comprises controlling energy and dosage of irradiation to provide the diamond material with a plurality of isolated vacancy point defects, the isolated vacancy point defects having a concentration in a range 1×10 | 08-15-2013 |
20130205681 | DIAMOND TOOLS - A method comprising: selecting a diamond material; irradiating the diamond material to increase toughness and/or wear resistance of the diamond material; and processing the diamond material into one or more diamond tool pieces, wherein the diamond material is selected from the group consisting of: a HPHT diamond material having a total equivalent isolated nitrogen concentration in the range 1 to 600 ppm; a CVD diamond material having a total equivalent isolated nitrogen concentration in the range 0.005 to 100 ppm; and a natural diamond material having a total nitrogen concentration in the range 1 to 2000 ppm, wherein the irradiating comprises controlling energy and dosage of irradiation to provide the diamond material with a plurality of isolated vacancy point defects, the isolated vacancy point defects having a concentration in a range 1×10 | 08-15-2013 |
20130247478 | Method to Improve the Leaching Process - A method to leach a component that includes a polycrystalline structure. The method includes obtaining the component having the polycrystalline structure. The polycrystalline structure includes catalyst material deposited therein. The method also includes performing a leaching process on the polycrystalline structure to an intermediate leaching depth. The leaching process removes at least a portion of the catalyst material from the polycrystalline structure and forms one or more by-product materials deposited therein. The method also includes performing a cleaning process on the polycrystalline structure, which removes at least a portion of the by-product materials. The leaching process and the cleaning process are iteratively continued until the intermediate leaching depth reaches a desired leaching depth, both of which are measured from one end of the polycrystalline structure. The desired leaching depth is greater than at least one intermediate leaching depth. | 09-26-2013 |
20130255160 | SYSTEMS AND METHODS FOR SHARPENING CUTTING BLADES - A method of sharpening blades of a hair cutting device includes providing a sharpening composition in substantially crystalline form, activating a hair cutting device, submerging a working end of the hair cutting device at least partially into the sharpening composition, and viewing the sharpening composition. Sharpening is complete when the sharpening composition is substantially transformed to powder form. | 10-03-2013 |
20130263521 | HIGH TEMPERATURE HIGH HEATING RATE TREATMENT OF PDC CUTTERS - A post manufacture method and apparatus for reducing residual stresses present within a component. The component includes a substrate, a polycrystalline structure coupled thereto, and residual stresses present therein. The method includes obtaining a component from a component category, determining a critical temperature and a critical time period for the component category at which the component becomes structurally impaired, determining a heat treatment temperature and a heat treatment time period based upon the critical temperature and the critical time period, and heating one or more remaining components from the component category to the heat treatment temperature for the heat treatment time period. The apparatus includes a heater defining a heating chamber and a molten bath positioned within the heating chamber. The components are placed within the pre-heated molten bath and isolated from oxygen during heating to the heat treatment temperature for the heat treatment time period. | 10-10-2013 |
20130263522 | SUPERHARD CONSTRUCTION - A method of making a superhard construction includes providing a polycrystalline superhard (PCS) structure comprising bonded grains of a superhard material, providing an aggregated mass comprising grains of the superhard material, and providing a substrate having a recess configured for accommodating the PCS structure. The PCS structure is placed into the recess with the aggregated mass of superhard grains positioned adjacent the PCS structure to form an unjoined assembly. Pressure and heat are then applied to the unjoined assembly to join the aggregated mass to the PCS structure and form the superhard construction. | 10-10-2013 |
20130291443 | METHOD OF MAKING POLYCRYSTALLINE DIAMOND MATERIAL - A method for making polycrystalline diamond material comprises providing a plurality of diamond particles or grains, coating the diamond particles or grains with a binder material comprising a non-metallic catalyst material for diamond, consolidating the coated diamond particles or grains to form a green body, and subjecting the green body to a temperature and pressure at which diamond is thermodynamically stable, sintering and forming polycrystalline diamond material. | 11-07-2013 |
20130298474 | CUTTING TOOL MADE OF SIALON BASED MATERIAL - The present invention relates to a ceramic material for cutting tool inserts, wherein the ceramic material is based on sialon comprising β-sialon (Si | 11-14-2013 |
20140000177 | UNIQUE CUBIC BORON NITRIDE CRYSTALS AND METHOD OF MANUFACTURING THEM | 01-02-2014 |
20140013672 | METHODS OF IMPROVING SINTERING OF PCD USING GRAPHENE - A method of making diamond including mixing graphene with diamond seed to form a powder mixture, and then sintering the powder mixture, in the absence of a transition metal catalyst, at high pressure and high temperature; and a method of making a polycrystalline diamond compact including mixing graphene in diamond powder to form a powder mixture with less than about 50% graphene by weight, and then sintering the powder mixture, in the absence of a transition metal catalyst, at high pressure and high temperature. | 01-16-2014 |
20140013673 | VITRIFIED BONDED GRINDING STONE - The vitrified bonded grinding stone includes a vitrified bond in which super abrasives such as cubic crystal boron nitride grains or diamond grains and an aggregate are contained. The aggregate is formed by porous ceramics and a substance which closes pores of the porous ceramics and the substance is weaker in strength than the porous ceramics and has a physical property that the substance does not dissolve under a burning temperature of the vitrified bond. | 01-16-2014 |
20140026492 | CUTTING TOOL AND METHOD FOR PRODUCING SAME - The present invention provides a cutting tool that achieves cutting with high precision. The cutting tool of the present invention includes a cutting edge composed of a polycrystalline body including high-pressure-phase hard grains that contain one or more elements selected from the group consisting of boron, carbon, and nitrogen, the polycrystalline body being formed by subjecting a non-diamond carbon material and/or boron nitride, serving as a starting material, to direct conversion sintering under ultra-high pressure and high temperature without adding a sintering aid or a catalyst, in which letting the radius of curvature of the nose of the cutting edge of the cutting tool be R1, the sintered grains constituting the polycrystalline body have an average grain size of 1.2×R1 or less and a maximum grain size of 2×R1 or less. | 01-30-2014 |
20140041312 | Polycrystalline Abrasive Compacts - A method of manufacturing polycrystalline abrasive elements consisting of micron, sub-micron or nano-sized ultrahard abrasives dispersed in micron, sub-micron or nano-sized matrix materials. A plurality of ultrahard abrasive particles having vitreophilic surfaces are coated with a matrix precursor material in a refined colloidal process and then treated to render them suitable for sintering. The matrix precursor material can be converted to an oxide, nitride, carbide, oxynitride, oxycarbide, or carbonitride, or an elemental form thereof. The coated ultrahard abrasive particles are consolidated and sintered at a pressure and temperature at which they are crystallographically or thermodynamically stable. | 02-13-2014 |
20140053471 | AGGREGATE ABRASIVE GRAINS FOR ABRADING OR CUTTING TOOLS PRODUCTION - Aggregate abrasive grains are formed for use in the production of abrading or cutting tools by providing abrasive core particles, coating these particles with adhesive, and separately dropping the adhesive coated core particles onto a layer of abrasive peripheral particles. The method further includes covering the dropped core particles with further peripheral particles, in a way to form aggregate particles, each of which includes a core particle having peripheral particles attached to it. The adhesive includes a binding agent and a solvent for the binding agent. Finally, the aggregate particles are consolidated by causing the solvent to evaporate, i.e. by letting the adhesive set. | 02-27-2014 |
20140090307 | SINGLE CRYSTAL CBN FEATURING MICRO-FRACTURING DURING GRINDING - A superabrasive material and method of making the superabrasive material are provided. The superabrasive material may comprise a superabrasive crystal having an irregular surface. The superabrasive material further comprises a plurality of structure defects within the superabrasive crystal. The plurality of structure defects may cause micro-chipping when used as grinding materials. | 04-03-2014 |
20140090308 | METHOD OF SORTING ABRASIVE PARTICLES, ABRASIVE PARTICLE DISTRIBUTIONS, AND ABRASIVE ARTICLES INCLUDING THE SAME - A method of making an abrasive particle distribution includes: sorting an initial lot of abrasive particles into a plurality of sublots including first and second sublots of the abrasive particles according to their average particle diameter and aspect ratio, and combining the first and second sublots. The initial lot conforms to an abrasives industry specified nominal grade. The first sublot has an average particle diameter and aspect ratio less than the second sublot. A sum of the first sublot and the second sublot contains fewer abrasive particles than the initial lot. The resultant abrasive particle distribution and abrasive articles including the same are also disclosed | 04-03-2014 |
20140165474 | Titanium Diboride Composition in PCBN - A composition of a sintered superhard compact is provided. The sintered superhard compact body may comprise superhard particles, such as cubic boron nitride. The binder phase may bond the superhard particles together. The binder phase comprises a titanium compound and a balance aluminum compound. The titanium compound may be formed during the high pressure high temperature condition. The sintered superhard compact body may have an amount of the titanium compound in order to have a mixed wear and toughness application. | 06-19-2014 |
20140165475 | METHOD TO IMPROVE EFFICIENCY OF PCD LEACHING - A method of treating polycrystalline diamond includes providing a leaching agent Within a vessel, placing a polycrystalline diamond body within the vessel such that the polycrystalline diamond body contacts the leaching agent, and applying a vacuum pressure in the vessel at an interval, where the interval includes at least one cycle, each cycle having a duration measured from the time the vacuum pressure is applied to the time the vacuum pressure is removed, and a frequency at which the at least one cycle is conducted. | 06-19-2014 |
20140237906 | COMPOSITE POLYCRYSTALLINE DIAMOND BODY - In this novel PDC cutter, diamond powders of different composition and/or different grain size, are distributed, shaped, and compacted with a novel pressing tool, in multiple stages, spatially arranged into different regions of the PDC diamond body, then HPHT sintered to form one PDC body with spatially varying hardness, toughness and thermal resistance. | 08-28-2014 |
20140318026 | COMPOSITIONS, KITS, SYSTEMS AND METHODS FOR SHARPENING CUTTING BLADES - A kit for use in sharpening blades of a hair cutting device includes a packet defining an interior area that is sealingly enclosed within the packet and a pre-determined amount of a sharpening composition disposed within the interior area of the packet. The sharpening composition includes a plurality of crystalline particles having exterior surfaces dyed a color different from the natural color of the crystals. The amount of sharpening composition, average initial diameter of the crystalline particles, and hardness of the crystalline particles are such that the sharpening composition facilitates sharpening of a hair cutting device. Compositions for use in sharpening blades of a hair cutting device are also disclosed. | 10-30-2014 |
20140366456 | METHOD FOR LASER CUTTING POLYCRYSTALLINE DIAMOND STRUCTURES - Methods of laser cutting polycrystalline diamond tables and polycrystalline diamond compacts are disclosed. Laser cutting of the polycrystalline diamond table provides an alternative to electrical-discharge machining (“EDM”), grinding with a diamond wheel, or lapping with a diamond wheel. Grinding or lapping with a diamond wheel is relatively slow and expensive, as diamond is used to remove a diamond material. EDM cutting of the polycrystalline diamond table is sometimes impractical or even impossible, particularly when the cobalt or other infiltrant or catalyst concentration within the polycrystalline diamond table is very low (e.g., in the case of a leached polycrystalline diamond table). As such, laser cutting provides a valuable alternative machining method that may be employed in various processes such as laser scribing, laser ablation, and laser lapping. | 12-18-2014 |
20150027065 | DIAMOND COMPOSITE AND A METHOD OF MAKING A DIAMOND COMPOSITE - The present invention relates to a diamond composite comprising diamond particles embedded in a binder matrix comprising SiC and a M | 01-29-2015 |
20150052823 | BORON NITRIDE COMPOSITES - According to one embodiment, a composite product includes hexagonal boron nitride (hBN), and a plurality of cubic boron nitride (cBN) particles, wherein the plurality of cBN particles are dispersed in a matrix of the hBN. According to another embodiment, a composite product includes a plurality of cBN particles, and one or more borate-containing binders. | 02-26-2015 |
20150059255 | DRILL BITS, CUTTING ELEMENTS FOR DRILL BITS, AND DRILLING APPARATUSES INCLUDING THE SAME - A roof-bolt drill bit may have a forward end, a rearward end, and a rotational axis extending between the forward end and the rearward end. A cutting element for the roof-bolt drill bit may include a cutting face and a peripheral surface extending around an outer periphery of the cutting face. The cutting element may include at least one chamfer region and a peripherally extending chamfer extending from the at least one chamfer region along the outer periphery of the cutting element, a width of the at least one chamfer region being greater than a width of the peripherally extending chamfer. | 03-05-2015 |
20150096238 | ABRASIVE PARTICLES, SLURRY, POLISHING SOLUTION, AND MANUFACTURING METHODS THEREFOR - A method for manufacturing an abrasive grain, comprising a step of obtaining a particle including a hydroxide of a tetravalent metal element by mixing a metal salt solution comprising a salt of the tetravalent metal element with an alkali liquid, and a step of heating the particle including a hydroxide of a tetravalent metal element. | 04-09-2015 |
20150292271 | HIGH DIAMOND FRAME STRENGTH PCD MATERIALS - The present disclosure relates to cutting elements incorporating polycrystalline diamond bodies used for subterranean drilling applications, and more particularly, to polycrystalline diamond bodies having high diamond frame strength and methods for forming and evaluating such polycrystalline diamond bodies. A polycrystalline diamond body is provided, having a top surface, a cutting edge meeting the top surface, and a first region including at least a portion of the cutting edge. The first portion exhibits a diamond frame strength of about 1200 MPa or greater, or about 1300 MPa or greater. | 10-15-2015 |
20150292272 | A POLYCRYSTALLINE SUPER HARD CONSTRUCTION AND A METHOD FOR MAKING SAME - A polycrystalline super hard construction comprises a body of PCD material and a plurality of interstitial regions between inter-bonded diamond grains forming the PCD material. The body also comprises a first region substantially free of a solvent/catalysing 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/catalysing 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. | 10-15-2015 |
20150298290 | CUBIC BORON NITRIDE POLYCRYSTAL, CUTTING TOOL, WEAR-RESISTANT TOOL, GRINDING TOOL, AND METHOD OF PRODUCING CUBIC BORON NITRIDE POLYCRYSTAL - A cubic boron nitride polycrystal includes cubic boron nitride, the cubic boron nitride having an average grain size of not more than 150 nm, a ratio b/a being not more than 0.085 in measurement of Knoop hardness at 23° C.±5° C. under a test load of 4.9 N, the ratio b/a being a ratio between a length a of a longer diagonal line and a length b of a shorter diagonal line of a Knoop indentation. | 10-22-2015 |
20150298291 | INDUCTION HEATED VACUUM FURNACE FOR MAKING BRAZED DIAMOND DENTAL BURRS - Process for manufacture of a dental burr including a brazed diamond grit working surface comprising the steps of:
| 10-22-2015 |
20150315722 | 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. | 11-05-2015 |
20150321317 | POLYCRYSTALLINE DIAMOND BODY, CUTTING TOOL, WEAR-RESISTANT TOOL, GRINDING TOOL, AND METHOD FOR PRODUCING POLYCRYSTALLINE DIAMOND BODY - A polycrystalline diamond body contains diamond particles. The diamond particles have a mean particle size of 50 nm or less. As a result of measurement of a knoop hardness under a test load of 4.9 N at 23° C.±5° C., the polycrystalline diamond body has a ratio of a length B of a shorter diagonal line with respect to a length A of a longer diagonal line of diagonal lines of a knoop indentation, expressed as a B/A ratio, of 0.080 or less. This polycrystalline diamond body is tough and has a small particle size. | 11-12-2015 |
20150343599 | POLYCRYSTALLINE ULTRA-HARD CONSTRUCTIONS WITH MULTIPLE SUPPORT MEMBERS - Polycrystalline ultra-hard constructions comprise a polycrystalline ultra-hard material body and two or more support members attached to the body by braze material. The support members include a backside support member and a side support member. The side support member is a one- or two-piece construction, and is positioned circumferentially around and extends axially along the body or both the body and the backside support member such that a working surface of the body remains exposed. The support members can be configured to provide a mechanical attachment or interlocking attachment with the body or another support member. The braze materials used in the construction can be different and selected to enhance the attachment and/or reduce the creation of thermal stress within the construction during assembly. The support members can be selected having different thermal expansion characteristics that also operate to reduce the thermal stress during construction assembly. | 12-03-2015 |
20150345230 | METHODS OF FORMING AND REPAIRING EARTH-BORING TOOLS INCLUDING REPLACEABLE CUTTING STRUCTURES - Methods of forming an earth-boring tool may involve attaching one or more cutting elements to a replaceable cutting structure and positioning the replaceable cutting structure proximate a region of a body of an earth-boring tool that is susceptible to at least one of localized wear and localized impact damage. The replaceable cutting structure may be to the body. Methods of repairing an earth-boring tool may involve bringing a replaceable cutting structure proximate at least one portion of a body of an earth-boring tool exhibiting at least one of localized wear and localized impact damage. The replaceable cutting structure may be attached to the earth-boring tool at the at least one portion. | 12-03-2015 |
20150352687 | INDUCTION HEATING AIDED LEACHING OF POLYCRYSTALLINE DIAMOND COMPACTS AND A PROCESS THEREOF - A method of treating a polycrystalline diamond (PCD) compact including a substrate and a layer of diamond material mixture of diamond particles and binder-catalyst disposed on the substrate. A leaching agent is applied to at least the layer of diamond material of the PCD compact. The leaching agent and a surface of the layer of diamond material are heated to a first temperature. The substrate is cooled to a second temperature. A first temperature gradient is established within the PCD compact to cause an inward diffusion of the leaching agent into at least the layer of diamond material. The cooling of the substrate is stopped and energy is applied directly to the PCD compact to heat the same to a third temperature. A second temperature gradient is established within the PCD compact to cause an outward diffusion of the binder-catalyst to remove the same from the layer of diamond material. The first and second temperature gradients can be repeated to accelerate removal of the reacted binder-catalyst from at least the layer of diamond material. | 12-10-2015 |
20150367310 | COMBINED FIELD ASSISTED SINTERING TECHNIQUES AND HTHP SINTERING TECHNIQUES FOR FORMING POLYCRYSTALLINE DIAMOND COMPACTS AND EARTH-BORING TOOLS - Methods of forming polycrystalline diamond compacts include employing field assisted sintering techniques with high temperature and high pressure sintering techniques. For example, a particle mixture that includes diamond particles may be sintered by subjecting the particle mixture to a high temperature and high pressure sintering cycle, and pulsing direct electrical current through the particle mixture during at least a portion of the high temperature and high pressure sintering cycle. The polycrystalline diamond compacts may be used to form cutting elements for earth-boring tools. Sintering systems are configured to perform such sintering processes. | 12-24-2015 |
20160023176 | COMPOSITION COMPRISING HF AND 3,3,3-TRIFLUORO-2-CHLOROPROPENE - An azeotropic or quasi-azeotropic composition including hydrogen fluoride, 3,3,3-trifluoro-2-chloropropene and one or more (hydro)halogen-carbon compounds including between 1 and 3 carbon atoms. Also an azeotropic or quasi-azeotropic composition including hydrogen fluoride, 3,3,3-trifluoro-2-chloropropene, and one or more compounds selected from among 1,3,3,3-tetrafluoropropene, 1,1,1,2,2-pentafluoropropane, 2,3,3,3-tetrafluoropropene, 3,3,3-trifluoropropene, E-3,3,3-trifluoro-1-chloropropene, trifluoropropyne, 1,1,3,3-pentafluoropropane, 1,1,1,3,3-pentafluoropropane, 1,1,1,3,3-pentafluoropropene, 1,1,1,2,3-pentafluoropropene and 2-chloro,1,1,1,2-1 tetrafluoropropane. | 01-28-2016 |
20160074997 | BORON NITRIDE COMPOSITES - According to one embodiment, a composite product includes: a matrix material including hexagonal boron nitride and one or more borate binders; and a plurality of cubic boron nitride particles dispersed in the matrix material. According to another embodiment, a composite product includes: a matrix material including hexagonal boron nitride and amorphous boron nitride; and a plurality of cubic boron nitride particles dispersed in the matrix material. | 03-17-2016 |
20160101504 | Diamond Abrasive Recovery Method - A diamond abrasive recovery method in which diamond abrasive is recovered from polishing material slurry including diamond abrasive used for polishing a polishing target mainly composed of silicon. The method comprises (1) recovering polishing material slurry including the used diamond abrasive; (2) adding inorganic salt including a metallic element which is to be a divalent or trivalent cation to the recovered polishing material slurry to aggregate the diamond abrasive and separating a supernatant liquid from a diamond abrasive included dispersion medium; and (3) extracting diamond abrasive from the separated diamond abrasive included dispersion medium using a low polarity dispersion medium. | 04-14-2016 |
20160144481 | ABRASIVE ARTICLE AND METHOD OF FORMING - An abrasive article including a substrate having an elongated body, a tacking layer overlying the substrate, and a first type of abrasive particle overlying the tacking layer and defining a first abrasive particle concentration at least about 10 particles per mm of substrate. | 05-26-2016 |
20160151885 | ABRASIVE ARTICLE INCLUDING AGGLOMERATES HAVING SILICON CARBIDE AND AN INORGANIC BOND MATERIAL | 06-02-2016 |
20160151889 | METHODS OF FORMING POLYCRYSTALLINE ELEMENTS FROM BROWN POLYCRYSTALLINE TABLES | 06-02-2016 |
20160158921 | METHODS OF FORMING POLYCRYSTALLINE COMPACTS AND EARTH-BORING TOOLS INCLUDING POLYCRYSTALLINE COMPACTS - Methods of forming polycrystalline compacts include subjecting a plurality of grains of hard material interspersed with a catalyst material to high-temperature and high-pressure conditions to form a polycrystalline material having intergranular bonds and interstitial spaces between adjacent grains of the hard material. The catalyst material is disposed in at least some of the interstitial spaces in the polycrystalline material. The methods further comprise substantially removing the catalyst material from the interstitial spaces in at least a portion of the polycrystalline material to form an at least partially leached polycrystalline compact; and removing a portion of the polycrystalline material from which the catalyst material has been substantially removed from the at least partially leached polycrystalline compact. The polycrystalline cutting elements may be secured to a bit body of an earth-boring tool. | 06-09-2016 |
20160177152 | SHAPED ABRASIVE PARTICLE AND METHOD OF FORMING SAME | 06-23-2016 |
20160193718 | METHODS OF FORMING POLYCRYSTALLINE DIAMOND COMPACTS | 07-07-2016 |
20160194254 | SURFACE-COATED BORON NITRIDE SINTERED BODY TOOL | 07-07-2016 |
20160251741 | SUPERHARD CONSTRUCTIONS AND METHODS OF MAKING SAME | 09-01-2016 |
20160251742 | SUPERHARD CONSTRUCTIONS AND METHODS OF MAKING SAME | 09-01-2016 |
20180021924 | SUPER HARD COMPONENTS AND POWDER METALLURGY METHODS OF MAKING THE SAME | 01-25-2018 |