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    SURFACE-COATED CUTTING TOOL AND METHOD FOR MANUFACTURING THE SAME
    2.
    发明申请
    SURFACE-COATED CUTTING TOOL AND METHOD FOR MANUFACTURING THE SAME 审中-公开

    公开(公告)号：US20200180037A1

    公开(公告)日：2020-06-11

    申请号：US16318296

    申请日：2017-04-25

    Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.

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

    IPC: B23B27/14 ,  B23C5/16 ,  C23C16/02 ,  C23C16/40 ,  C23C16/56

    Abstract: A surface-coated cutting tool has a rake face and a flank face, and includes a base material and a coating formed on the base material. The base material has a cutting edge face connecting the rake face to the flank face. The coating includes an aluminum oxide layer containing a plurality of aluminum oxide crystal grains. The aluminum oxide layer includes: a first region made up of a region A on the rake face and a region B on the flank face; a second region on the rake face except for the region A; and a third region on the flank face except for the region B. The aluminum oxide layer satisfies a relation: b−a>0.5, where a is an average value of TC(006) in the first region in texture coefficient TC(hkl), and b is an average value of TC(006) in the second or third region in texture coefficient TC(hkl).

    Surface-coated cutting tool and method of producing the same
    3.
    发明授权
    Surface-coated cutting tool and method of producing the same 有权

    公开(公告)号：US10259048B2

    公开(公告)日：2019-04-16

    申请号：US15324798

    申请日：2016-06-22

    Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.

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

    IPC: C23C16/34 ,  B23B27/14 ,  C23C16/36 ,  B23B51/04 ,  B23C5/22 ,  B23F21/00 ,  C23C16/455 ,  C23C30/00

    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. When the angle of intersection between the 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 is measured, a proportion A of the crystal grains having the angle of intersection of 0 degree or more to less than 20 degrees is 50% or more. The length of Σ3 grain boundaries is less than 50% of the length of Σ3-29 grain boundaries. The crystal grain has a layered structure in which a first layer and a second layer are alternately stacked. The total thickness of the first layer and the second layer adjacent to each other is 3 to 40 nm.

    SURFACE-COATED CUTTING TOOL AND METHOD OF PRODUCING THE SAME
    8.
    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
    9.
    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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