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    Cutting tool
    3.
    发明授权
    Cutting tool 有权

    公开(公告)号：US11203068B2

    公开(公告)日：2021-12-21

    申请号：US17051463

    申请日：2020-02-27

    Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.

    Inventor： Yasuki Kido ,  Anongsack Paseuth ,  Susumu Okuno ,  Shinya Imamura

    IPC: B23B27/14 ,  B23C5/16 ,  C23C16/34 ,  C23C28/04

    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.

    Cutting tool
    5.
    发明授权
    Cutting tool 有权

    公开(公告)号：US11007580B2

    公开(公告)日：2021-05-18

    申请号：US16969387

    申请日：2020-02-27

    Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.

    Inventor： Yasuki Kido ,  Anongsack Paseuth ,  Susumu Okuno ,  Shinya Imamura

    IPC: B23B27/18 ,  B23C5/16 ,  C23C16/36 ,  C23C28/04 ,  C23C16/30 ,  B23B51/00

    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 (111) 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 (111) oriented AlxTi1-xN crystal grains at a ratio of 80% or more.

    Cutting tool
    6.
    发明授权
    Cutting tool 有权

    公开(公告)号：US10967433B2

    公开(公告)日：2021-04-06

    申请号：US16981099

    申请日：2019-12-12

    Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.

    Inventor： Susumu Okuno ,  Shinya Imamura ,  Yuki Rikiso ,  Yasuki Kido ,  Fumiyoshi Kobayashi

    IPC: B24D3/02 ,  B23B27/14 ,  B23C5/16 ,  B24D3/00 ,  B24D11/00 ,  B24D18/00 ,  C09K3/14

    Abstract: A cutting tool comprises a substrate and a coating that coats the substrate, the coating including an α-alumina layer, the α-alumina layer including crystal grains of α-alumina, the α-alumina layer including a lower portion and an upper portion, the upper portion being occupied in area at a ratio of 50% or more by crystal grains of α-alumina having (006) plane with a normal thereto having a direction within ±15° with respect to a direction of a normal to the second interface, the lower portion being occupied in area at a ratio of 5% or more and less than 50% by crystal grains of α-alumina having (012) plane, (104) plane, (110) plane, (113) plane, (116) plane, (300) plane, (214) plane and (006) plane each with a normal thereto having a direction within ±15° with respect to the direction of the normal to the second interface.

    SURFACE-COATED CUTTING TOOL AND METHOD OF PRODUCING THE SAME
    7.
    发明申请
    SURFACE-COATED CUTTING TOOL AND METHOD OF PRODUCING THE SAME 审中-公开

    公开(公告)号：US20190151956A1

    公开(公告)日：2019-05-23

    申请号：US16091612

    申请日：2016-06-22

    Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.

    Inventor： Anongsack Paseuth ,  Hideaki Kanaoka ,  Shinya Imamura ,  Satoshi Ono

    IPC: B23B27/14 ,  C23C16/34 ,  C23C16/36

    Abstract: A surface-coated cutting tool includes a base material and a coating. A hard layer in the coating includes a plurality of crystal grains having a sodium chloride-type crystal structure. The crystal grain has a layered structure in which a first layer composed of nitride or carbonitride of AlxTi1-x and a second layer composed of nitride or carbonitride of AlyTi1-y are alternately stacked. The total thickness of the first layer and the second layer adjacent to each other is 3 nm or more and 40 nm or less. An angle of intersection between a normal direction to (111) plane that is a crystal plane of the crystal grain and the normal direction to the surface of the base material, an area ratio of the crystal grains having the angle of intersection of 0 degree or more to less than 10 degrees is 40% or more.

    Surface-coated cutting tool and method of producing the same
    8.
    发明授权
    Surface-coated cutting tool and method of producing the same 有权

    公开(公告)号：US10252343B2

    公开(公告)日：2019-04-09

    申请号：US15311587

    申请日：2016-06-07

    Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.

    Inventor： Anongsack Paseuth ,  Hideaki Kanaoka ,  Shinya Imamura ,  Satoshi Ono

    IPC: B23B27/14 ,  C23C16/34

    Abstract: A surface-coated cutting tool includes a base material and a coating formed on a surface of the base material. The coating includes a first hard coating layer including crystal grains having a sodium chloride-type crystal structure. The crystal grain has a layered structure in which a first layer composed of nitride or carbonitride of AlxTi1-x and a second layer composed of nitride or carbonitride of AlyTi1-y are stacked alternately into one or more layers. The first layer each has an atomic ratio x of Al varying in a range of 0.6 or more to less than 1. The second layer each has an atomic ratio y of Al varying in a range of 0.45 or more to less than 0.6. The largest value of difference between the atomic ratio x and the atomic ratio y is 0.05≤x−y≤0.5.

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