Patents Assigned to Sumitomo Electric Hardmetal Corp.
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Publication number: 20210246077Abstract: A cubic boron nitride sintered material comprises 30% by volume or more and 80% by volume or less of cubic boron nitride grains and 20% by volume or more and 70% by volume or less of a binder phase, the cubic boron nitride grains having a dislocation density of 3×1017/m2 or more and 1×1020/m2 or less.Type: ApplicationFiled: December 16, 2019Publication date: August 12, 2021Applicants: SUMITOMO ELECTRIC HARDMETAL CORP., SUMITOMO ELECTRIC HARDMETAL CORP., Sumitomo Electric Industries, Ltd., Sumitomo Electric Industries, Ltd.Inventors: Hironari MOROGUCHI, Michiko MATSUKAWA, Satoru KUKINO, Akito ISHII, Katsumi OKAMURA, Machiko ABE, Kenta SANO
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Publication number: 20210245261Abstract: A cutting tool comprises a substrate and a coating layer provided on the substrate, the coating layer including a multilayer structure layer composed of a first unit layer and a second unit layer, and a lone layer, the lone layer including cubic TizAl1-zN crystal grains, an atomic ratio z of Ti in the TizAl1-zN being 0.55 or more and 0.7 or less, the lone layer having a thickness with an average value of 2.5 nm or more and 10 nm or less, the multilayer structure layer having a thickness with an average value of 40 nm or more and 95 nm or less, one multilayer structure layer and one lone layer forming a repetitive unit having a thickness with an average value of 50 nm to 100 nm, a maximum value of 90 nm to 110 nm, and a minimum value of 40 nm to 60 nm.Type: ApplicationFiled: June 22, 2020Publication date: August 12, 2021Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.Inventors: Yasuki KIDO, Anongsack PASEUTH, Susumu OKUNO
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Publication number: 20210245262Abstract: A cutting tool comprises a substrate and a coating layer provided on the substrate, the coating layer including a multilayer structure layer composed of a first unit layer and a second unit layer, and a lone layer, the lone layer including cubic TizAl1-zN crystal grains, an atomic ratio z of Ti in the TizAl1-zN being 0.4 or more and less than 0.55, the lone layer having a thickness with an average value of 2.5 nm or more and 10 nm or less, the multilayer structure layer having a thickness with an average value of 10 nm or more and 45 nm or less, one multilayer structure layer and one lone layer forming a repetitive unit having a thickness with an average value of 20 nm to 50 nm, a maximum value of 40 nm to 60 nm, and a minimum value of 10 nm to 30 nm.Type: ApplicationFiled: June 22, 2020Publication date: August 12, 2021Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.Inventors: Yasuki KIDO, Anongsack PASEUTH, Susumu OKUNO
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Publication number: 20210246078Abstract: A cubic boron nitride sintered material includes: more than or equal to 85 volume % and less than 100 volume % of cubic boron nitride grains; and a remainder of a binder, wherein the binder includes WC, Co and an Al compound, and when a TEM-EDX is used to analyze an interface region including an interface at which the cubic boron nitride grains are adjacent to each other, oxygen exists on a whole or part of the interface, and a width D of a region in which the oxygen exists is more than or equal to 0.1 nm and less than or equal to 10 nm.Type: ApplicationFiled: September 18, 2019Publication date: August 12, 2021Applicants: Sumitomo Electric Industries, Ltd., Sumitomo Electric Hardmetal Corp.Inventors: Katsumi OKAMURA, Yuichiro WATANABE, Akito ISHII, Takashi HARADA, Satoru KUKINO
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Publication number: 20210246536Abstract: A method of producing a cubic boron nitride sintered material includes: forming an organic cubic boron nitride powder by attaching an organic substance onto a cubic boron nitride source material powder; preparing a powder mixture including more than or equal to 85 volume % and less than 100 volume % of the organic cubic boron nitride powder and a remainder of a binder source material powder by mixing the organic cubic boron nitride powder and the binder source material powder, the binder source material powder including WC, Co and Al; and obtaining the cubic boron nitride sintered material by sintering the powder mixture.Type: ApplicationFiled: September 18, 2019Publication date: August 12, 2021Applicants: Sumitomo Electric Industries, Ltd., Sumitomo Electric Hardmetal Corp.Inventors: Katsumi OKAMURA, Yuichiro WATANABE, Akito ISHII, Takashi HARADA, Satoru KUKINO
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Publication number: 20210246076Abstract: The cubic boron nitride sintered material comprises 30% by volume or more and 80% by volume or less of cubic boron nitride grains and 20% by volume or more and 70% by volume or less of a binder phase, the cubic boron nitride grains having a dislocation density of 1×1015/m2 or more and 1×1017/m2 or less.Type: ApplicationFiled: December 16, 2019Publication date: August 12, 2021Applicants: SUMITOMO ELECTRIC HARDMETAL CORP., Sumitomo Electric Industries, Ltd.Inventors: Hironari MOROGUCHI, Michiko MATSUKAWA, Satoru KUKINO, Akito ISHII, Katsumi OKAMURA, Machiko ABE, Kenta SANO
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Publication number: 20210238036Abstract: A polycrystalline cubic boron nitride comprising 98.5% by volume or more of cubic boron nitride, wherein the cubic boron nitride has a dislocation density of more than 8×1015/m2, the polycrystalline cubic boron nitride comprises a plurality of crystal grains, and the plurality of crystal grains have a median diameter d50 of an equivalent circle diameter of 0.1 ?m or more and 0.5 ?m or less.Type: ApplicationFiled: February 27, 2020Publication date: August 5, 2021Applicant: Sumitomo Electric Hardmetal Corp.Inventors: Michiko MATSUKAWA, Satoru KUKINO, Taisuke HIGASHI, Machiko ABE
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Publication number: 20210238716Abstract: A composite sintered material includes: a plurality of diamond grains having an average grain size of less than or equal to 10 ?m; a plurality of cubic boron nitride grains having an average grain size of less than or equal to 2 ?m; and a plurality of aluminum oxide grains having an average grain size of less than or equal to 0.5 ?m; and a remainder of a binder phase, wherein at least parts of adjacent diamond grains are bound to one another, the binder phase includes cobalt, in the composite sintered material, a content of the diamond grains is from 30 to 92 volume %, a content of the cubic boron nitride grains is from 3 to 40 volume %, a content of the aluminum oxide grains is from 2 to 15 volume %, and a content of the cobalt is from 3 to 30 volume %.Type: ApplicationFiled: April 3, 2019Publication date: August 5, 2021Applicants: Sumitomo Electric Industries, Ltd., SUMITOMO ELECTRIC HARDMETAL CORP.Inventors: Naoki Watanobe, Takashi Harada, Katsumi Okamura, Satoru Kukino, Taisuke Higashi
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Publication number: 20210238100Abstract: A polycrystalline cubic boron nitride comprising 96% by volume or more of cubic boron nitride, wherein the cubic boron nitride has a dislocation density of more than 8×1015/m2, the polycrystalline cubic boron nitride comprises a plurality of crystal grains, and the plurality of crystal grains have a median diameter d50 of an equivalent circle diameter of less than 100 nm.Type: ApplicationFiled: February 27, 2020Publication date: August 5, 2021Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.Inventors: Michiko MATSUKAWA, Satoru KUKINO, Taisuke HIGASHI, Machiko ABE
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Publication number: 20210237169Abstract: A cutting tool comprises a substrate and a coating layer provided on the substrate, the coating layer including a multilayer structure layer composed of a first unit layer and a second unit layer, and a lone layer, the lone layer including cubic TizAl1-zN crystal grains, an atomic ratio z of Ti in the TizAl1-zN being 0.4 or more and less than 0.55, the lone layer having a thickness with an average value of 2.5 nm or more and 10 nm or less, the multilayer structure layer having a thickness with an average value of 40 nm or more and 95 nm or less, one multilayer structure layer and one lone layer forming a repetitive unit having a thickness with an average value of 50 nm to 100 nm, a maximum value of 90 nm to 110 nm, and a minimum value of 40 nm to 60 nm.Type: ApplicationFiled: June 22, 2020Publication date: August 5, 2021Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.Inventors: Yasuki KIDO, Anongsack PASEUTH, Susumu OKUNO
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Publication number: 20210237227Abstract: A polycrystalline abrasive grain includes: a plurality of cBN particles; and a binder that binds the plurality of cBN particles, wherein the binder includes at least one of nitride, carbide, and carbonitride of one selected from a group consisting of a group 4a metal, a group 5a metal, and a group 6a metal in a periodic table, and a content of the binder in the polycrystalline abrasive grain is more than or equal to 5 volume % and less than or equal to 50 volume %.Type: ApplicationFiled: April 24, 2019Publication date: August 5, 2021Applicants: Sumitomo Electric Industries, Ltd., SUMITOMO ELECTRIC HARDMETAL CORP., A.L.M.T. Corp.Inventors: Takashi HARADA, Katsumi OKAMURA, Akito ISHII, Satoru KUKINO, Nobuhide NAKAMURA, Tomokazu NAKAMURA
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Publication number: 20210237165Abstract: A cutting tool including a rake face, a flank face, and a cutting edge portion, comprising a substrate and an AlTiN layer, the AlTiN layer including cubic AlxTi1-xN crystal grains, Al having an atomic ratio x of 0.7 or more and less than 0.95, the AlTiN layer including a central portion, the central portion at the rake face being occupied in area by (200) oriented crystal grains at a ratio of 80% or more, the central portion at the cutting edge portion being occupied in area by (200) oriented crystal grains at a ratio of 50% or more and less than 80%.Type: ApplicationFiled: February 27, 2020Publication date: August 5, 2021Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.Inventors: Yasuki KIDO, Anongsack PASEUTH, Susumu OKUNO, Shinya IMAMURA
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Patent number: 11077501Abstract: In accordance with various illustrative embodiments of the present disclosure, a rotationally symmetric surface of a workpiece is machined by a turning apparatus, wherein the workpiece is rotationally driven around a rotational axis, a cutting tool with a cutting edge positioned at the edge of a rake face is arranged relative to the workpiece, the cutting tool is brought into contact with the workpiece, and the cutting tool is advanced relative to the workpiece along a feed direction parallel to the rotational axis, the normal to the rake face being tilted relative to the feed direction, a first axis and a second axis, the first axis and the second axis are perpendicular to the feed direction and perpendicular to each other.Type: GrantFiled: September 9, 2016Date of Patent: August 3, 2021Assignee: Sumitomo Electric Hardmetal Corp.Inventors: Makoto Abe, Christoph Zeiner
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Patent number: 11065692Abstract: A diamond-coated tool includes: a substrate; and a diamond layer that coats the substrate, wherein the diamond layer includes a first region that is in contact with the substrate, the first region includes a region S1 surrounded by an interface P between the substrate and the diamond layer and an imaginary plane V1 separated from the interface P by a distance of 2 ?m, and the region S1 has crystal grains grown in random directions.Type: GrantFiled: May 9, 2019Date of Patent: July 20, 2021Assignee: SUMITOMO ELECTRIC HARDMETAL CORP.Inventors: Nozomi Tsukihara, Rintaro Sugimoto, Yutaka Kobayashi
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Patent number: 11065693Abstract: A cutting tool shim is to be disposed between a cutting insert and a holder and to be fixed to the holder. The ridgeline between the flank face and the rake face forms a cutting edge. The cutting edge includes an arc-shaped portion. A coolant supply path for jetting coolant to the arc-shaped portion is provided in the cutting tool shim, the coolant being supplied from the holder. The coolant supply path includes a lead-in port for leading the coolant from the holder to the coolant supply path, and a jetting port for arc-shaped portion for jetting the coolant to the arc-shaped portion. The jetting port for arc-shaped portion has a curved shape along the arc-shaped portion. The distance between the jetting port for arc-shaped portion and the arc-shaped portion is not less than 2.2 mm and not more than 8.1 mm.Type: GrantFiled: July 31, 2017Date of Patent: July 20, 2021Assignee: Sumitomo Electric Hardmetal Corp.Inventors: Tsutomu Hirano, Satoru Kukino, Tomoyuki Fukuyama, Takuma Kishimoto
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Publication number: 20210213539Abstract: A cutting tool comprises a rake face and a flank face, the cutting tool being composed of a substrate made of a cubic boron nitride sintered material and a coating provided on the substrate, the coating including a MAIN layer, the MAIN layer including crystal grains of MxAl1-xN in the cubic crystal system, nF<nR being satisfied, where nF represents a number of voids per 100 ?m in length of the MAIN layer on the flank face in a cross section of the MAIN layer, and nR represents a number of voids per 100 ?m in length of the MAIN layer on the rake face in a cross section of the MAIN layer, nD being 3 or less, where nD represents a number of droplets per 100 ?m in length of the MAIN layer on the flank face in a cross section of the MAIN layer.Type: ApplicationFiled: July 16, 2020Publication date: July 15, 2021Applicant: Sumitomo Electric Hardmetal Corp.Inventors: Momoko IIDA, Makoto SETOYAMA, Haruyo FUKUI
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Patent number: 11059105Abstract: Provided is a surface-coated cutting tool including a base material and a coating including a super-multilayer-structure layer where A layers and B layers different from the A layers in composition are alternately laminated. The super-multilayer-structure layer includes an X area and a Y area those are alternately repeated. In the X area, A layers having a thickness AX and B layers having a thickness BX are alternately laminated. In the Y area, A layers having a thickness AY and B layers having a thickness BY are alternately laminated. The thickness AX is larger than the thickness AY, and the thickness BX is smaller than the thickness BY. Each of the A layers and the B layers comprising one or more elements selected from a group consisting of Ti, Al, Cr, Si, Ta, Nb, and W, and one or more elements selected from a group consisting of C and N.Type: GrantFiled: September 20, 2017Date of Patent: July 13, 2021Assignee: Sumitomo Electric Hardmetal Corp.Inventors: Keizo Tanaka, Makoto Setoyama, Yutaka Kobayashi, Akira Kobayashi
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Patent number: 11059112Abstract: A milling tool includes: a body having an outer circumferential surface formed around a central axis; a cutting insert having a rake surface, a flank surface, and a cutting edge formed by a ridgeline of the rake surface and the flank surface; and a screw attaching the cutting insert to the body. The outer circumferential surface has an insert attachment portion. The insert attachment portion is defined by a first seat surface continuing to the outer circumferential surface and a second seat surface continuing to the first seat surface and having a flat portion provided with a screw hole in which the screw is inserted. The cutting edge is formed of a sintered material containing at least one of cubic boron nitride and polycrystalline diamond. In a cross section perpendicular to the central axis, a first angle formed by a first direction and a second direction is an acute angle.Type: GrantFiled: January 16, 2018Date of Patent: July 13, 2021Assignee: Sumitomo Electric Hardmetal Corp.Inventors: Keiji Kinoshita, Kouki Matsubara
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Patent number: D924950Type: GrantFiled: October 5, 2020Date of Patent: July 13, 2021Assignee: SUMITOMO ELECTRIC HARDMETAL CORP.Inventors: Yifan Wen, Yosuke Shimamoto, Naoya Tsuda
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Patent number: D924951Type: GrantFiled: October 5, 2020Date of Patent: July 13, 2021Assignee: SUMITOMO ELECTRIC HARDMETAL CORP.Inventors: Yifan Wen, Yosuke Shimamoto, Naoya Tsuda
