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公开(公告)号：US20240247344A1
公开(公告)日：2024-07-25
申请号：US18624400
申请日：2024-04-02
发明人： Lawrence Dues
CPC分类号： C22C26/00 , B22F3/14 , B22F7/06 , C22C29/06 , B22F2302/10 , B22F2302/205 , C22C2026/006
摘要： The present application is a new improvement in the fine-grained cubic boron nitride sintered compact which may be employed to manufacture a cutting tool. The compact contains at least 80 vol % cBN with a metallic binder system and is sintered under HPHT conditions. The improvement incorporates alloys of aluminum in the metallic binder system. The invention has proved beneficial in the machining of cast iron.
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公开(公告)号：US12031574B2
公开(公告)日：2024-07-09
申请号：US17641133
申请日：2020-10-16
发明人： Biju Varghese , Venkata Durga Prasad Kappagantula , Anshul Singh , Andrew Gledhill , Joseph M. Rhodes
CPC分类号： F16C17/04 , F16C33/043 , F16C33/26 , F16C43/02 , F16C2206/04 , F16C2226/40 , F16C2352/00
摘要： Provided are bearing assemblies including one or more substrate assemblies, such as thrust bearing assemblies. The substrate assemblies include a bearing element fixed to a substrate. The bearing elements are formed from a thermally stable material such as a ceramic-bonded diamond composite. Methods for manufacturing the bearing assemblies are also provided.
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公开(公告)号：US11976345B2
公开(公告)日：2024-05-07
申请号：US17254151
申请日：2018-06-28
发明人： Lawrence Dues
CPC分类号： C22C26/00 , B22F3/14 , B22F7/06 , C22C29/06 , B22F2302/10 , B22F2302/205 , C22C2026/006
摘要： The present application is a new improvement in the fine-grained cubic boron nitride sintered compact which may be employed to manufacture a cutting tool. The compact contains at least 80 vol % cBN with a metallic binder system and is sintered under HPHT conditions. The improvement incorporates alloys of aluminum in the metallic binder system.
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公开(公告)号：US20220371158A1
公开(公告)日：2022-11-24
申请号：US17772060
申请日：2020-12-03
发明人： Kiran ADEPALLI
IPC分类号： B24D3/10 , C01B32/28 , B01J23/745 , B01J23/75 , C09K3/14
摘要： Polycrystalline diamond compacts, polycrystalline diamond blanks, polycrystalline diamond cutters, and tools incorporating same for cutting, milling, grinding, drilling and other abrasive operations, particularly in metal cutting applications, include a diamond table having a gradient in iron content that increases as distance into the volume of the diamond table increases. The iron gradient increases resistance to wear, such as in interrupted milling tests. The disclosure further relates to methods of manufacturing polycrystalline diamond compacts having a gradient in iron concentration in the diamond table, blanks and cutters including polycrystalline diamond compacts, cutting tools incorporating such compacts, blanks and cutters, and methods of cutting, milling, grinding and drilling, particularly metal machining, using such compacts, blanks, cutters, cutting tools and drill bits.
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公开(公告)号：US20210122679A1
公开(公告)日：2021-04-29
申请号：US17254193
申请日：2018-06-28
发明人： Gary Flood
IPC分类号： C04B35/52 , C04B35/626 , C04B35/645 , C09K3/14 , B24D18/00
摘要： Polycrystalline diamond cutters and methods of making thereof are described. The cutters include a substrate and a diamond body. The diamond body includes diamond particles spatially arranged according to a gradient of particle sizes. The methods include steps of suspending diamond particles in a liquid and allowing their sedimentation according to a gradient of particle sizes resulting in regions spatially arranged axially and/or radially in which a majority of diamond particles in one region have lower average sizes or average diameters comparative to a majority of diamond particles in a second region.
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7.发明授权公开(公告)号：US10859444B2
公开(公告)日：2020-12-08
申请号：US15701694
申请日：2017-09-12
IPC分类号： G01N25/02 , G01K1/00 , G01K13/00 , G01K1/26 , G01K11/06 , C01G23/00 , G01K3/04 , C30B29/32 , G01K11/14 , G01K11/30 , G01K19/00
摘要： A method for the measurement of temperature in high temperature and high pressure processes includes the steps of providing at least a first material compound and at least a second material compound. The at least first and second compounds are mixed to form a material sample. The material sample is loaded into a device and the device and material sample are subjected to a high pressure of up to about 10 GPa and a high temperature of up to about 1700° C. to form the material sample into a solid crystalline solution. The material sample is recovered for analysis and the composition of the crystalline solid solution is measured to determine the temperature.
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公开(公告)号：US10695892B2
公开(公告)日：2020-06-30
申请号：US14582542
申请日：2014-12-24
IPC分类号： B24D3/10 , E21B10/567 , B24D18/00 , B24D99/00 , C22C1/00 , E21B10/00 , B22F7/06 , C22C26/00 , E21B10/56 , B22F5/00 , B01J3/06
摘要： A superabrasive cutter and a method of making the superabrasive cutter are disclosed. The superabrasive cutter may comprise a plurality of polycrystalline superabrasive particles and about 0.01% to about 4% by weight of the superabrasive particles of a dopant as evaluated prior to a high pressure/high temperature process. The dopant may be immiscible with a catalyst for forming the polycrystalline superabrasive particles.
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公开(公告)号：US20190247928A1
公开(公告)日：2019-08-15
申请号：US16273266
申请日：2019-02-12
发明人： Hui ZHANG , Abds-Sami MALIK
IPC分类号： B23B27/14 , C04B35/528 , C04B35/645 , C04B35/63
CPC分类号： B23B27/14 , B23B2224/00 , B23B2226/315 , C04B35/528 , C04B35/6303 , C04B35/645 , C04B2235/407 , C04B2235/427 , C04B2235/5436
摘要： Diamond particles with enhanced reactivity are used to sinter polycrystalline diamond (PCD), under high pressure and high temperature conditions. Copper and tin form a solution with transition metal catalyst (cobalt) used to sinter diamond particles. Copper and tin enhance the reactivity of the diamond particles, reduce the coefficient of thermal expansion (CTE) mismatch between cobalt and polycrystalline diamond, and lead to a more homogeneous distribution of catalyst metal in PCD. A cutting element may comprise a substrate and a polycrystalline diamond table bonded to the substrate produced by sintering diamond particles with enhanced reactivity mixed with standard diamond particles and chemical additives. These combined effects (more reactive diamond particles, reduced CTE mismatch, and homogeneous distribution of catalyst metal) lead to better performing tools.
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10.发明申请公开(公告)号：US20190247814A1
公开(公告)日：2019-08-15
申请号：US16272535
申请日：2019-02-11
发明人： Emil T. STOYANOV , Abds-Sami MALIK
IPC分类号： B01J3/06 , C04B35/52 , C04B35/645
CPC分类号： B01J3/062 , B01J2203/062 , B01J2203/0685 , C04B35/52 , C04B35/645 , C04B2235/3213 , C04B2235/407 , C04B2235/427 , C04B2235/442 , C04B2235/5454 , C04B2235/80 , C04B2235/9607
摘要： A transition metal catalyst free polycrystalline diamond compact having enhanced thermal stability is disclosed herein. The diamond compact may be attached to a hard metal substrate. The polycrystalline diamond body includes a plurality of diamond grains bonded to adjacent diamond grains by diamond-to-diamond bonds. Sintering of the PCD and the formation of diamond-to-diamond bonding is achieved by transforming graphene treated diamond crystals that are blended with non-metal additives at high pressure and high temperature into a diamond compact that is free of transition metal catalysts. Non-metal additives include vitreous and other non-equilibrium forms of carbon as well as Sr-, K- and Ca-containing carbon sources.
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