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公开(公告)号：US10308559B2
公开(公告)日：2019-06-04
申请号：US15569109
申请日：2016-04-22
IPC分类号： C04B35/58 , C04B35/5831 , B22F3/14 , C04B35/117 , C04B35/56 , C04B35/581 , C04B35/645 , C22C26/00 , C04B35/63 , B22F5/00 , C04B37/00 , C22C29/16
摘要： A sintered polycrystalline body and a method of forming the sintered polycrystalline body are disclosed. The sintered polycrystalline body comprises a plurality of particles cubic boron nitride dispersed in a matrix. The matrix includes materials selected from compounds of any of titanium and aluminium. The polycrystalline body further comprises 0.1 to 5.0 volume % of lubricating chalcogenide particles dispersed in the matrix. The chalcogenide particles have a coefficient of friction of less than 0.1 with respect to a workpiece material. Preferably sulfide particles are used as lubricant. Preferably 30-70 vol.-% cBN is contained. Sintering takes place at 1100-1600° C. and 4-8 GPa.
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公开(公告)号：US20170144936A1
公开(公告)日：2017-05-25
申请号：US15327047
申请日：2015-07-10
发明人： Santonu Ghosh
IPC分类号： C04B35/5831 , C04B35/632 , B28B3/02 , C04B35/638 , C04B35/626 , C04B35/622 , C04B35/64
CPC分类号： C04B35/5831 , B22F2005/001 , B22F2998/10 , B23C2226/125 , B23C2226/315 , B23P15/34 , B28B3/025 , B28B19/00 , C04B35/528 , C04B35/62222 , C04B35/6263 , C04B35/632 , C04B35/634 , C04B35/638 , C04B35/64 , C04B35/645 , C04B2235/386 , C04B2235/427 , C04B2235/6021 , C04B2235/608 , C22C26/00 , C22C2026/003 , C22C2204/00 , B22F1/0059 , B22F3/20 , B22F3/1021 , B22F3/14
摘要： A method of making a super-hard article comprising a super-hard structure (14) bonded to a substrate (18), the super-hard structure comprising a sintered plurality of super-hard grains. The method includes providing raw material powder suitable for sintering the super-hard structure. The raw material powder is combined with organic binder material in a liquid medium to form paste. The content of the raw material powder is more than 60 and less than 85 mass per cent of the paste and the composition of the paste is such that it has a shear rate of at most 25 inverse second (s-1). A substrate assembly is provided, which comprises the substrate, having a formation surface area configured for forming a boundary of the super-hard structure, the substrate comprising a recess coterminous with the formation surface area. The paste is extruded into contact with the formation surface area to provide a paste assembly. The paste assembly is heat treated to remove the binder material and provide a pre-sinter assembly. The pre-sinter assembly is subjected to a pressure and temperature sufficient to sinter the raw material powder and transform it into the super-hard structure bonded to the substrate at a boundary coterminous with the formation surface area. The super-hard material is diamond or cubic boron nitride.
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公开(公告)号：US11261133B2
公开(公告)日：2022-03-01
申请号：US15327047
申请日：2015-07-10
发明人： Santonu Ghosh
IPC分类号： C04B35/5831 , C22C26/00 , B28B19/00 , B22F3/20 , B22F5/00 , C04B35/626 , C04B35/638 , B28B3/02 , C04B35/634 , C04B35/645 , C04B35/528 , C04B41/50 , C04B35/622 , C04B35/632 , C04B35/64 , B23P15/34
摘要： This application describes a method of making a super-hard article that includes a super-hard structure bonded to a substrate. The super-hard structure generally includes a sintered plurality of super-hard grains made from cubic boron nitride. The method generally includes providing raw material powder suitable for sintering the super-hard structure; combining the raw material powder with an organic binder material in a liquid medium to form a paste; providing a substrate assembly having a formation surface area configured for forming a boundary of the super-hard structure, the substrate having a recess coterminous with the formation surface area; extruding the paste into contact with the formation surface area to provide a paste assembly; and heat treating and/or sintering the paste assembly to remove the binder material and provide a pre-sinter assembly.
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公开(公告)号：US11634796B2
公开(公告)日：2023-04-25
申请号：US17772834
申请日：2020-11-25
摘要： This disclosure relates a polycrystalline cubic boron nitride, PCBN, composite material for use in friction stir welding. The PCBN composite material comprises tungsten (W), rhenium (Re) and aluminium (Al) in the binder matrix material.
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公开(公告)号：US11518717B2
公开(公告)日：2022-12-06
申请号：US16093450
申请日：2017-05-31
IPC分类号： C04B35/5831 , C04B35/626 , C04B35/645 , C22C26/00 , B22F1/107 , B22F9/04
摘要： Polycrystalline cubic boron nitride, PCBN, material and methods of making PCBN. A method includes providing a matrix precursor powder comprising particles having an average particle size no greater than 250 nm, providing a cubic boron nitride, cBN, powder comprising particles of cBN having an average particle size of at least 0.2 intimately mixing the matrix precursor powder and the cBN powder, and sintering the intimately mixed powders at a temperature of at least 1100° C. and a pressure of at least 3.5 GPa to form the PCBN material comprising particles of cubic boron nitride, cBN dispersed in a matrix material.
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公开(公告)号：US20190119167A1
公开(公告)日：2019-04-25
申请号：US16093450
申请日：2017-05-31
IPC分类号： C04B35/5831 , C04B35/626 , C04B35/645 , B22F1/00 , B22F9/04
摘要： Polycrystalline cubic boron nitride, PCBN, material and methods of making PCBN. A method includes providing a matrix precursor powder comprising particles having an average particle size no greater than 250 nm, providing a cubic boron nitride, cBN, powder comprising particles of cBN having an average particle size of at least 0.2 intimately mixing the matrix precursor powder and the cBN powder,and sintering the intimately mixed powders at a temperature of at least 1100° C. and a pressure of at least 3.5 GPa to form the PCBN material comprising particles of cubic boron nitride, cBN dispersed in a matrix material.
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公开(公告)号：US12044118B2
公开(公告)日：2024-07-23
申请号：US17773506
申请日：2020-11-03
IPC分类号： E21B47/01 , E21B10/46 , E21B10/52 , E21B10/56 , E21B10/567 , E21B47/013 , E21B49/00 , G01K7/01 , G01N27/04
CPC分类号： E21B47/013 , E21B10/46 , E21B10/52 , E21B10/56 , E21B10/567 , E21B49/003 , G01K7/01 , G01N27/041
摘要： A sensor element for a cutting tool has a hard portion having a first sensing surface, first and second electrodes, and first and second sets of thermocouple wires, and an electrically insulating portion. The second electrode has a second sensing surface, The hard portion comprises hard and/or super-hard material and the first and second electrodes comprise electrically conductive hard and/or super-hard material, the hard portion isolating the first sensing surface from the second sensing surface. The second electrode is attached to or forms part of an electrically conductive region of the hard portion or a region attached thereto. Electric current flows between the first and second electrodes through external material when the sensing surfaces contact the material in response to the cutting tool engaging the material. The first and second electrodes are operable to indicate any one or more of a temperature of the first and second electrodes, and conductivity between the electrodes.
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公开(公告)号：US11970908B2
公开(公告)日：2024-04-30
申请号：US17613824
申请日：2020-05-27
发明人： Valentine Kanyanta , Santonu Ghosh
IPC分类号： E21B12/02 , B23B27/20 , E21B10/567 , H04B1/3827 , H04W4/38
CPC分类号： E21B10/567 , B23B27/20 , E21B12/02 , H04B1/3827 , H04W4/38 , B23B2226/125 , B23B2226/315
摘要： A sensor system has a cutter element for a cutting tool, an interrogation transceiver operable to transmit a radio-frequency (RF) interrogation signal; and a sensor transceiver system operable to receive the RF interrogation signal and to transmit an RF response signal. The sensor transceiver system includes a signal guide medium configured to transduce between the RF interrogation signal, a guided signal in the signal guide medium, and the RF response signal. A characteristic of the RF response signal is dependent upon a condition of the signal guide medium. The cutter element includes the signal guide medium to allow the condition of the signal guide medium to depend upon a condition of the cutter element proximate the signal guide medium. A method of using the sensor system is also disclosed.
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公开(公告)号：US11905819B2
公开(公告)日：2024-02-20
申请号：US17613833
申请日：2020-05-27
IPC分类号： E21B10/567 , E21B47/013 , C23C14/14 , C23C14/34 , C23C16/27
CPC分类号： E21B47/013 , C23C14/14 , C23C14/34 , C23C16/27 , E21B10/567
摘要： A composite product has a body of polycrystalline diamond (PCD) material having a PCD proximal end and a PCD distal end, an electronic device including an electronic component, and a connection portion joining the electronic device to the body at the PCD distal end, and comprising metallic join material having a liquidus temperature of 600° C. to 950° C. at atmospheric pressure. At least one of the electronic device and the body includes an electrically insulating portion between the electronic component and the PCD proximal boundary establishing an electrical open circuit condition between the electronic component and the PCD proximal boundary. A method of making the composite product is also disclosed.
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公开(公告)号：US20230079359A1
公开(公告)日：2023-03-16
申请号：US18053563
申请日：2022-11-08
IPC分类号： C04B35/5831 , C04B35/626 , C04B35/645 , C22C26/00 , B22F1/107 , B22F9/04
摘要： Polycrystalline cubic boron nitride, PCBN, material and methods of making PCBN. A method includes providing a matrix precursor powder comprising particles having an average particle size no greater than 250 nm, providing a cubic boron nitride, cBN, powder comprising particles of cBN having an average particle size of at least 0.2 μm, intimately mixing the matrix precursor powder and the cBN powder, and sintering the intimately mixed powders at a temperature of at least 1100° C. and a pressure of at least 3.5 GPa to form the PCBN material comprising particles of cubic boron nitride, cBN dispersed in a matrix material.
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