Patents Assigned to Sumitomo Electric Hardmetal Corp.
  • CUBIC BORON NITRIDE SINTERED MATERIAL
    Publication number: 20210355036
    Abstract: A cubic boron nitride sintered material includes: more than 80 volume % and less than 100 volume % of cubic boron nitride grains; and more than 0 volume % and less than 20 volume % of a binder phase. The binder phase includes: at least one selected from a group consisting of a simple substance, an alloy, and an intermetallic compound selected from a group consisting of a group 4 element, a group 5 element, a group 6 element in a periodic table, aluminum, silicon, cobalt, and nickel. A dislocation density of the cubic boron nitride grains is more than or equal to 3×1017/m2 and less than or equal to 1×1020/m2.
    Type: Application
    Filed: December 16, 2019
    Publication date: November 18, 2021
    Applicants: Sumitomo Electric Industries, Ltd., Sumitomo Electric Industries, Ltd., SUMITOMO ELECTRIC HARDMETAL CORP., SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Akito ISHII, Katsumi OKAMURA, Hironari MOROGUCHI, Satoru KUKINO
  • Cutting tool
    Patent number: 11173553
    Abstract: A cutting tool has a rake face and a flank face. The flank face is provided with a coolant supply hole. A ridgeline between the rake face and the flank face forms a cutting edge. An outer shape of the coolant supply hole in a cross section orthogonal to an axis includes a first portion facing the cutting edge, and a second portion opposite to the cutting edge when viewed from the first portion. The first portion has a concave portion extending toward the second portion. The concave portion is defined by a first side portion and a second side portion facing each other, and a bottom continuous with both the first side portion and the second side portion. In the cross section, an angle formed by a tangent of the first side portion and a tangent of the second side portion is not more than 160°.
    Type: Grant
    Filed: April 19, 2017
    Date of Patent: November 16, 2021
    Assignee: Sumitomo Electric Hardmetal Corp.
    Inventors: Shinya Nakata, Yuki Tsutsumi
  • Cutting insert and cutting tool
    Patent number: 11167361
    Abstract: A cutting insert includes a main body including a first face, a second face, and a third face. The second face includes a rake face. Among the outer-peripheral sides of the second face, the boundary portion with the first face is a main cutting edge. When viewed from the side where the first face is disposed, the main cutting edge includes a first straight portion, a second straight portion, and a curved portion. The first straight portion is located adjacent to a reference side. The second straight portion is arranged at a distance from the first straight portion. The curved portion connects the first straight portion and the second straight portion. A first intersection angle of the first straight portion with respect to the reference side is different from a second intersection angle of the second straight portion with respect to the reference side.
    Type: Grant
    Filed: March 17, 2020
    Date of Patent: November 9, 2021
    Assignee: Sumitomo Electric Hardmetal Corp.
    Inventor: Yuta Morisaki
  • Surface-coated cutting tool
    Patent number: 11167357
    Abstract: A surface-coated cutting tool includes a substrate and a coating film. The coating film includes an alternate layer. The alternate layer includes a first layer having a first composition and a second layer having a second composition. The alternate layer is formed by alternately stacking at least one first layer and at least one second layer. The first layer and the second layer each have a thickness not smaller than 2 nm and not greater than 100 nm. The first composition is expressed as TiaAlbSicN (0.25?a?0.45, 0.55?b?0.75, 0?c?0.1, a+b+c=1). The second composition is expressed as TidAleSifN (0.35?d?0.55, 0.45?e?0.65, 0?f?0.1, d+e+f=1). The first composition and the second composition satisfy a condition of 0.05?d?a?0.2 and 0.05?b?e?0.2.
    Type: Grant
    Filed: March 3, 2017
    Date of Patent: November 9, 2021
    Assignee: Sumitomo Electric Hardmetal Corp.
    Inventors: Shuhei Misumi, Haruyo Fukui, Shinya Imamura, Kazuhiro Hirose, Hiroki Takeshita
  • Cutting tool
    Patent number: 11167355
    Abstract: A cutting tool includes: a substrate including a rake face; and a coating film that coats the rake face, wherein the coating film includes an ?-Al2O3 layer disposed on the substrate, the ?-Al2O3 layer includes crystal grains of ?-Al2O3, an area ratio of crystal grains oriented in (001) among the crystal grains is 50% to 90% in the ?-Al2O3 layer at the rake face, and a film residual stress AA determined based on a crystal plane interval of a (001) plane of the ?-Al2O3 layer at the rake face is more than 0 MPa and less than or equal to 2000 MPa, and a film residual stress BA determined based on a crystal plane interval of a (110) plane of the ?-Al2O3 layer at the rake face is more than or equal to ?1000 MPa and less than 0 MPa.
    Type: Grant
    Filed: July 5, 2019
    Date of Patent: November 9, 2021
    Assignee: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Susumu Okuno, Shinya Imamura, Satoshi Ono, Anongsack Paseuth
  • Cubic boron nitride sintered material
    Patent number: 11161790
    Abstract: 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: Grant
    Filed: December 16, 2019
    Date of Patent: November 2, 2021
    Assignees: SUMITOMO ELECTRIC HARDMETAL CORP., Sumitomo Electric Industries, Ltd.
    Inventors: Hironari Moroguchi, Michiko Matsukawa, Satoru Kukino, Akito Ishii, Katsumi Okamura, Machiko Abe, Kenta Sano
  • Sintered material and partially stabilized zirconia with solid solution of alumina formed therein
    Patent number: 11155501
    Abstract: A sintered material comprises cubic boron nitride and a first material that is a partially stabilized ZrO2 with Al2O3 dispersed therein at crystal grain boundaries and/or in crystal grains, the sintered material comprising 20% by volume or more and 80% by volume or less of the cubic boron nitride, the sintered material comprising 0.001% by mass or more and 1% by mass or less of nitrogen in the first material when the first material is measured through secondary ion mass spectrometry.
    Type: Grant
    Filed: February 22, 2019
    Date of Patent: October 26, 2021
    Assignees: SUMITOMO ELECTRIC INDUSTRIES, LTD., SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Hisaya Hama, Katsumi Okamura, Mayu Amemiya, Satoru Kukino
  • Method of producing cubic boron nitride sintered material, cubic boron nitride sintered material, and cutting tool including cubic boron nitride sintered material
    Patent number: 11155901
    Abstract: 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: Grant
    Filed: September 18, 2019
    Date of Patent: October 26, 2021
    Assignees: SUMITOMO ELECTRIC INDUSTRIES, LTD, SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Katsumi Okamura, Yuichiro Watanabe, Akito Ishii, Takashi Harada, Satoru Kukino
  • CUTTING TOOL
    Publication number: 20210316371
    Abstract: Provided is a cutting tool including a base material and a coating layer provided on the base material, the coating layer including a titanium carbonitride layer provided on the base material, an intermediate layer provided on the titanium carbonitride layer in contact therewith, and an alumina layer provided on the intermediate layer in contact therewith, the intermediate layer being composed of a compound made of titanium, carbon, oxygen, and nitrogen, the intermediate layer having a thickness of more than 1 ?m, when PN1 atomic % represents an atomic ratio of the nitrogen in an interface between the intermediate layer and the alumina layer, and PN2 atomic % represents an atomic ratio of the nitrogen at a point A away from the interface by 1 ?m on a side of the intermediate layer, a ratio PN1/PN2 of the PN1 to the PN2 being more than or equal to 1.03.
    Type: Application
    Filed: April 10, 2020
    Publication date: October 14, 2021
    Applicant: Sumitomo Electric Hardmetal Corp.
    Inventors: Susumu OKUNO, Yasuki KIDO, Fumiyoshi KOBAYASHI, Anongsack PASEUTH
  • Drill
    Patent number: 11141799
    Abstract: The drill has a rake face, a flank face, and an outer circumferential surface. The flank face is continuous to the rake face. The outer circumferential surface is continuous to both the rake face and the flank face. A ridgeline between the rake face and the flank face constitutes a cutting edge. A ridgeline between the rake face and the outer circumferential surface constitutes an outer circumferential end. A groove is provided cyclically in the rake face to extend at an angle relative to an axis of the drill, the angle being larger than a helix angle of the drill. The groove has a depth of more than or equal to 1.5 ?m.
    Type: Grant
    Filed: May 11, 2018
    Date of Patent: October 12, 2021
    Assignee: Sumitomo Electric Hardmetal Corp.
    Inventor: Shinya Nakata
  • Surface-coated cutting tool and method for manufacturing the same
    Patent number: 11130181
    Abstract: A surface-coated cutting tool includes a substrate and a coating formed on a surface of the substrate, the coating including one or two or more layers, at least one of the layers being an Al-rich layer including hard particles, the hard particle having a sodium chloride type crystal structure, and including a first unit phase in a form of a plurality of lumps and a second unit phase interposed between the lumps of the first unit phase, the first unit phase being composed of a nitride or carbonitride of AlxTi1-x, the first unit phase having an atomic ratio x of Al of 0.7 or more and 0.96 or less, the second unit phase being composed of a nitride or carbonitride of AlyTi1-y, the second unit phase having an atomic ratio y of Al exceeding 0.5 and less than 0.7.
    Type: Grant
    Filed: July 11, 2017
    Date of Patent: September 28, 2021
    Assignees: Sumitomo Electric Hardmetal Corp., Sumitomo Electric Industries, Ltd.
    Inventors: Anongsack Paseuth, Yasuki Kido, Shinya Imamura, Koji Kuramochi
  • DRILL
    Publication number: 20210291282
    Abstract: The drill is rotatable about a central axis. The drill includes a central axis, a front end and a rear end opposite to each other in a direction along the central axis, an outer peripheral surface, a cutting edge formed at the front end and extending from the outer peripheral surface toward the central axis, a flank face contiguous with the cutting edge, a flute formed on the outer peripheral surface and extending spirally around the central axis from the front end toward the rear end, and a thinning rake face contiguous with the flute. The cutting edge has a main cutting edge extending from the outer peripheral surface and a thinning cutting edge contiguous with an end of the main cutting edge away from the outer peripheral surface. The flute includes a main rake face contiguous with the main cutting edge from the opposite side of the flank face.
    Type: Application
    Filed: October 15, 2019
    Publication date: September 23, 2021
    Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Masaaki JINDAI, Yuki TSUTSUMI
  • Surface-coated cutting tool and method for manufacturing the same
    Patent number: 11123802
    Abstract: A surface-coated cutting tool includes a substrate and a coating formed on a surface of the substrate, the coating including one or two or more layers, at least one of the layers being an Al-rich layer including hard particles, the hard particle having a sodium chloride type crystal structure, and including a first unit phase in a form of a plurality of lumps and a second unit phase interposed between the lumps of the first unit phase, the first unit phase being composed of a nitride or carbonitride of AlxTi1-x, the first unit phase having an atomic ratio x of Al of 0.7 or more and 0.96 or less, the second unit phase being composed of a nitride or carbonitride of AlyTi1-y, the second unit phase having an atomic ratio y of Al exceeding 0.5 and less than 0.7.
    Type: Grant
    Filed: July 7, 2017
    Date of Patent: September 21, 2021
    Assignees: Sumitomo Electric Hardmetal Corp., Sumitomo Electric Industries, Ltd.
    Inventors: Anongsack Paseuth, Yasuki Kido, Shinya Imamura, Koji Kuramochi
  • Cemented carbide, cutting tool including same, and method of producing cemented carbide
    Patent number: 11111564
    Abstract: A cemented carbide includes second hard phase grains, wherein the second hard phase grains includes a core portion, and in a case where a total of 70 unit regions that are each constituted of a square having each side of 8?m are provided by successively arranging 7 unit regions in a longitudinal direction and 10 unit regions in a lateral direction in an electron microscope image of any cross section of the cemented carbide captured at a magnification of 1500×, where the total number of core portions in the total of 70 unit regions is calculated, and where a percentage of the number of core portions in each of the unit regions with respect to the total number of core portions is calculated, the number of unit regions in which the percentage is less than 0.43% or more than 2.43% is less than or equal to 10.
    Type: Grant
    Filed: August 8, 2019
    Date of Patent: September 7, 2021
    Assignee: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Kosuke Fukae, Yasuki Kido, Masami Watanabe, Shinya Imamura
  • Cutting insert
    Patent number: 11110526
    Abstract: A cutting insert according to the present disclosure includes a first surface, a second surface, a side surface, and a cutting edge. The first surface has a rake face continuous to the cutting edge. The cutting edge has a corner cutting edge, a flat cutting edge, and a main cutting edge. The rake face has a first rake face portion, a second rake face portion, and a third rake face portion, the first rake face portion being continuous to the flat cutting edge, the second rake face portion being continuous to the main cutting edge, the third rake face portion being continuous to the corner cutting edge and being located between the first rake face portion and the second rake face portion. The rake face is provided with a level difference portion.
    Type: Grant
    Filed: November 30, 2017
    Date of Patent: September 7, 2021
    Assignee: Sumitomo Electric Hardmetal Corp.
    Inventors: Yusuke Koike, Yasuyuki Kanada, Atsuhiko Maeta, Tomoyuki Fukuyama, Yoshinari Nagami, Yuta Morisaki
  • Cutting tool
    Patent number: 11103930
    Abstract: A cutting tool includes: a substrate including a rake face; and a coating film that coats the rake face, wherein the coating film includes an ?-Al2O3 layer disposed on the substrate, the ?-Al2O3 layer includes crystal grains of ?-Al2O3, an area ratio of crystal grains oriented in (001) among the crystal grains is 50% to 90% in the ?-Al2O3 layer at the rake face, a film residual stress AA determined based on a crystal plane interval of a (001) plane of the ?-Al2O3 layer at the rake face is more than or equal to ?1000 MPa and less than 0 MPa, and a film residual stress BA determined based on a crystal plane interval of a (110) plane of the ?-Al2O3 layer at the rake face is more than or equal to ?1000 MPa and less than 0 MPa, and a relational expression of |AA|?|BA| is satisfied.
    Type: Grant
    Filed: July 5, 2019
    Date of Patent: August 31, 2021
    Assignee: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Susumu Okuno, Shinya Imamura, Satoshi Ono, Anongsack Paseuth
  • SINTERED MATERIAL AND PARTIALLY STABILIZED ZIRCONIA WITH SOLID SOLUTION OF ALUMINA FORMED THEREIN
    Publication number: 20210253483
    Abstract: A sintered material comprises cubic boron nitride and a first material that is a partially stabilized ZrO2 with Al2O3 dispersed therein at crystal grain boundaries and/or in crystal grains, the sintered material comprising 20% by volume or more and 80% by volume or less of the cubic boron nitride, the sintered material comprising 0.001% by mass or more and 1% by mass or less of nitrogen in the first material when the first material is measured through secondary ion mass spectrometry.
    Type: Application
    Filed: February 22, 2019
    Publication date: August 19, 2021
    Applicants: Sumitomo Electric Industries, Ltd., Sumitomo Electric Hardmetal Corp.
    Inventors: Hisaya HAMA, Katsumi OKAMURA, Mayu AMEMIYA, Satoru KUKINO
  • CUTTING TOOL
    Publication number: 20210252604
    Abstract: 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 0.5 or more and 0.65 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 10 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 30 nm to 70 nm, a maximum value of 40 nm to 100 nm, and a minimum value of 20 nm to 40 nm.
    Type: Application
    Filed: June 22, 2020
    Publication date: August 19, 2021
    Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Yasuki KIDO, Anongsack PASEUTH, Susumu OKUNO
  • CUTTING TOOL
    Publication number: 20210245259
    Abstract: 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 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: Application
    Filed: June 22, 2020
    Publication date: August 12, 2021
    Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Yasuki KIDO, Anongsack PASEUTH, Susumu OKUNO
  • Cutting insert
    Patent number: D931916
    Type: Grant
    Filed: March 29, 2019
    Date of Patent: September 28, 2021
    Assignees: SUMITOMO ELECTRIC HARDMETAL CORP., HARTMETALL-WERKZEUGFABRIK PAUL HORN GMBH
    Inventors: Yosuke Shimamoto, Yasuyuki Kanada, Matthias Luik