Patents Assigned to Sumitomo Electric Hardmetal Corp.
  • Polycrystalline cubic boron nitride and method for manufacturing the same
    Patent number: 11214522
    Abstract: 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: Grant
    Filed: February 27, 2020
    Date of Patent: January 4, 2022
    Assignee: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Michiko Matsukawa, Satoru Kukino, Taisuke Higashi, Machiko Abe
  • Cubic boron nitride sintered body and cutting tool including the same
    Patent number: 11208358
    Abstract: Provided is a cubic boron nitride sintered body including more than or equal to 85 volume percent and less than 100 volume percent of cubic boron nitride particles, and a remainder of a binder, wherein the binder contains WC, Co, and an Al compound, the binder contains W2Co21B6, and, when IA represents an X-ray diffraction intensity of a (111) plane of the cubic boron nitride particles, IB represents an X-ray diffraction intensity of a (100) plane of the WC, and IC represents an X-ray diffraction intensity of a (420) plane of the W2Co21B6, a ratio IC/IA of the IC to the IA is more than 0 and less than 0.10, and a ratio IC/IB of the IC to the IB is more than 0 and less than 0.40.
    Type: Grant
    Filed: September 18, 2019
    Date of Patent: December 28, 2021
    Assignees: Sumitomo Electric Industries, Ltd., SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Katsumi Okamura, Yuichiro Watanabe, Akito Ishii, Takashi Harada, Satoru Kukino
  • Polycrystalline cubic boron nitride and method for manufacturing the same
    Patent number: 11208324
    Abstract: 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: Grant
    Filed: February 27, 2020
    Date of Patent: December 28, 2021
    Assignee: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Michiko Matsukawa, Satoru Kukino, Taisuke Higashi, Machiko Abe
  • Cutting tool
    Patent number: 11207736
    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: Grant
    Filed: April 10, 2020
    Date of Patent: December 28, 2021
    Assignee: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Susumu Okuno, Yasuki Kido, Fumiyoshi Kobayashi, Anongsack Paseuth
  • CUBIC BORON NITRIDE SINTERED MATERIAL
    Publication number: 20210395153
    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 1×1015/m2 and less than or equal to 1×1017/m2.
    Type: Application
    Filed: December 16, 2019
    Publication date: December 23, 2021
    Applicants: Sumitomo Electric Industries, Ltd., SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Akito ISHII, Katsumi OKAMURA, Hironari MOROGUCHI, Satoru KUKINO
  • Cutting tool
    Patent number: 11203068
    Abstract: 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, A1 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 AlxTi1-xN crystal grains at a ratio of 50% or more and less than 80%, the central portion at the cutting edge portion being occupied in area by (200) oriented AlxTi1-xN crystal grains at a ratio of 80% or more.
    Type: Grant
    Filed: February 27, 2020
    Date of Patent: December 21, 2021
    Assignee: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Yasuki Kido, Anongsack Paseuth, Susumu Okuno, Shinya Imamura
  • Oil hole reamer
    Patent number: 11198187
    Abstract: An oil hole reamer includes an oil passage extending inside a tool main body along an axis of the tool main body, and an oil hole extending radially outward from the oil passage to an outer circumference of the tool main body. An oil outlet of the oil hole is formed to be open toward a position corresponding to a corner at which a tip cutting edge intersects an outer-circumference cutting edge and to cause at least part of the oil outlet to be open to the outer-circumference flank face.
    Type: Grant
    Filed: October 16, 2019
    Date of Patent: December 14, 2021
    Assignees: Sumitomo Electric Tool Net, Inc., SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Jun Okamoto, Futoshi Takeshita, Kyosuke Kai, Katsutoshi Fukuda, Masashi Yamada
  • CUTTING TOOL
    Publication number: 20210379671
    Abstract: A cutting tool includes: a substrate; a hard layer provided on the substrate; and a titanium carbonitride layer provided on the hard layer, wherein a thickness of the titanium carbonitride layer is more than or equal to 2 ?m, a hardness of the titanium carbonitride layer at a room temperature is more than or equal to 35 GPa, and a Young's modulus of the titanium carbonitride layer at the room temperature is more than or equal to 800 GPa.
    Type: Application
    Filed: June 4, 2020
    Publication date: December 9, 2021
    Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Yasuki KIDO, Susumu OKUNO, Fumiyoshi KOBAYASHI, Masahito HIKIJI
  • Sintered material and cutting tool including same
    Patent number: 11192827
    Abstract: A sintered material includes a cubic boron nitride, a zirconium-containing oxide, a zirconium-containing nitride, and an aluminum-containing oxide, wherein the zirconium-containing nitride includes both or one of ZrN and ZrON, and the aluminum-containing oxide includes a type Al2O3.
    Type: Grant
    Filed: March 4, 2019
    Date of Patent: December 7, 2021
    Assignees: Sumitomo Electric Industries, Ltd., SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Katsumi Okamura, Hisaya Hama, Mayu Amemiya, Satoru Kukino
  • CUTTING TOOL
    Publication number: 20210370410
    Abstract: A cutting tool comprises a substrate and an AlTiN layer, the AlTiN layer including a first major surface and a second major surface, the AlTiN layer including a first region having a distance of 0 nm or more and 30 nm or less from the first major surface and having a maximum oxygen content ratio of more than 0 atomic % and less than 5 atomic %, a second region having a distance of more than 30 nm and 100 nm or less from the first major surface and having a maximum oxygen content ratio of 5 atomic % or more and 30 atomic % or less, and a third region having a distance of more than 100 nm and 150 nm or less from the first major surface and having a maximum oxygen content ratio of more than 0 atomic % and less than 5 atomic %.
    Type: Application
    Filed: June 2, 2020
    Publication date: December 2, 2021
    Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Yasuki KIDO, Susumu OKUNO, Fumiyoshi KOBAYASHI
  • CUTTING TOOL
    Publication number: 20210371973
    Abstract: A cutting tool comprises a substrate and an AlTiN layer, the AlTiN layer including cubic AlxTi(1-x)N crystal grains, an atomic ratio x of Al in the AlxTi(1-x)N being 0.7 or more and 0.95 or less, the AlTiN layer including a first major surface on a side of a surface of the cutting tool and a second major surface on a side of the substrate, the AlTiN layer including a first region having a distance of 0 nm or more and 100 nm or less from the first major surface, and a second region having a distance of more than 100 nm and 150 nm or less from the first major surface, the first region having a maximum oxygen content ratio of 5 atomic % or more and 30 atomic % or less, the second region having a maximum oxygen content ratio of less than 5 atomic %.
    Type: Application
    Filed: June 2, 2020
    Publication date: December 2, 2021
    Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Yasuki KIDO, Susumu OKUNO, Fumiyoshi KOBAYASHI
  • CUTTING TOOL
    Publication number: 20210371974
    Abstract: A cutting tool comprises a substrate and an AlTiN layer, the AlTiN layer including a first major surface and a second major surface, the AlTiN layer including a first region having a distance of 0 nm or more and 30 nm or less from the first major surface and having a maximum oxygen content ratio of 30 atomic % or more, a second region having a distance of more than 30 nm and 100 nm or less from the first major surface and having a maximum oxygen content ratio of 5 atomic % or more and less than 30 atomic %, and a third region having a distance exceeding 100 nm from the first major surface and having a maximum oxygen content ratio of less than 5 atomic %.
    Type: Application
    Filed: June 2, 2020
    Publication date: December 2, 2021
    Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Yasuki KIDO, Susumu OKUNO, Fumiyoshi KOBAYASHI
  • Surface-coated cutting tool and method for manufacturing same
    Patent number: 11185928
    Abstract: A surface-coated cutting tool includes a substrate and a coating film that coats the substrate, wherein the coating film includes a hard coating layer constituted of a domain region and a matrix region, the domain region is a region having a plurality of portions divided and distributed in the matrix region, the domain region has a structure in which a first layer composed of a first Alx1Ti(1-x1) compound and a second layer composed of a second Alx2Ti(1-x2) compound are layered on each other, the matrix region has a structure in which a third layer composed of a third Alx3Ti(1-x3) compound and a fourth layer composed of a fourth Alx4Ti(1-x4) compound are layered on each other, the first AlTi compound and the third AlTi compound have a hexagonal crystal structure, the second AlTi compound and the fourth AlTi compound have a cubic crystal structure.
    Type: Grant
    Filed: December 27, 2018
    Date of Patent: November 30, 2021
    Assignee: Sumitomo Electric Hardmetal Corp.
    Inventors: Anongsack Paseuth, Yasuki Kido, Susumu Okuno, Shinya Imamura
  • Polycrystalline cubic boron nitride and method for manufacturing the same
    Patent number: 11186485
    Abstract: 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 8×1015/m2 or less, 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: Grant
    Filed: February 27, 2020
    Date of Patent: November 30, 2021
    Assignee: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Michiko Matsukawa, Satoru Kukino, Taisuke Higashi, Machiko Abe
  • Cutting insert
    Patent number: 11185930
    Abstract: A cutting edge includes a nose portion, a first cutting edge portion, and a second cutting edge portion. When a boundary between a first inclined portion and a first breaker portion, a boundary between a first step surface and a second breaker portion, a boundary between a second inclined portion and a third breaker portion, and a boundary between a second step surface and a fourth breaker portion are a first position, a second position, a third position, and a fourth position, respectively, the second position is higher than the first position and the fourth position is higher than the third position in a direction perpendicular to the seating surface, and a distance between the first position and the third position is greater than a distance between the second position and the fourth position in a direction parallel to the seating surface.
    Type: Grant
    Filed: July 26, 2017
    Date of Patent: November 30, 2021
    Assignee: Sumitomo Electric Hardmetal Corp.
    Inventors: Yosuke Shimamoto, Naoki Matsuda, Hideo Maeno, Junya Okida
  • Cutting tool
    Patent number: 11179782
    Abstract: 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: Grant
    Filed: February 27, 2020
    Date of Patent: November 23, 2021
    Assignee: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Yasuki Kido, Anongsack Paseuth, Susumu Okuno, Shinya Imamura
  • 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
  • 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: D937330
    Type: Grant
    Filed: November 15, 2019
    Date of Patent: November 30, 2021
    Assignee: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Satoru Kukino, Takashi Harada, Naoki Watanobe