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    SURFACE-COATED CUTTING TOOL
    1.
    发明申请
    SURFACE-COATED CUTTING TOOL 有权

    公开(公告)号：US20220143712A1

    公开(公告)日：2022-05-12

    申请号：US17427128

    申请日：2020-02-06

    申请人： MITSUBISHI MATERIALS CORPORATION

    发明人： Hidetoshi Asanuma

    IPC分类号： B23B27/14 ,  C23C14/06 ,  C01B21/06

    摘要： A surface-coated cutting tool comprises a hard coat layer including a complex nitride layer on the tool substrate. The complex nitride layer has a composition: (Me1−x−yAlxMy)Nz where Me is Ti or Cr, x≤0.80, 0.00≤y≤0.20, 0.20≤(1−x−y)≤0.65, and 0.90≤z≤1.10 (where x, y, and z represents atomic ratios, M is at least one element selected from the group consisting of Groups 4 to 6 elements, Y, Si, La, and Ce in the IUPAC periodic table). The hard coat layer has an interfacial region extending from a point above the surface of the tool substrate and having a thickness in a range of 5 to 100 nm, and the N content to the total of Me, Al, M, and N contents is 10 to 30 atomic % at the point and increases toward the surface of the cutting tool.

    SURFACE-COATED CUTTING TOOL
    2.
    发明公开
    SURFACE-COATED CUTTING TOOL 审中-公开

    公开(公告)号：US20240165713A1

    公开(公告)日：2024-05-23

    申请号：US18282610

    申请日：2021-03-30

    申请人： MITSUBISHI MATERIALS CORPORATION

    发明人： Hidetoshi Asanuma

    IPC分类号： B23B27/14

    CPC分类号： B23B27/148 ,  B23B2224/00

    摘要： A surface coated cutting tool comprising a substrate and a coating layer on the substrate, the substrate comprising a WC-based cemented carbide comprising a hard phase component of WC grains and a binder phase primarily composed of Co, wherein



    (a) an interfacial layer is disposed between the substrate and the coating layer;
    (b) the interfacial layer includes a region A directly above the hard phase component and a region B directly above the binder phase, and the interfacial layer has an average thickness;

    at the midpoint across the average thickness of the interfacial layer, the W content in the region A ranges from 90 to 99 mass %, while the W content in the region B ranges from 30 to 65 mass %,
    the C content CA in the region A satisfies CA≤0.05 mass %, and
    the C content CB in the region B satisfies CA≤CB≤0.09 mass %.

    SURFACE-COATED CUTTING TOOL
    3.
    发明公开
    SURFACE-COATED CUTTING TOOL 审中-公开

    公开(公告)号：US20240123515A1

    公开(公告)日：2024-04-18

    申请号：US18274589

    申请日：2021-07-30

    申请人： MITSUBISHI MATERIALS CORPORATION

    发明人： Hidetoshi Asanuma ,  Tomoki Ebata

    IPC分类号： B23B27/14

    CPC分类号： B23B27/148 ,  B23B2224/00

    摘要： The coating film includes a laminated structure including at least one first layer and at least one second layer alternately disposed. The or each first layer has an average thickness of 0.5 to 100.0 nm and has an average composition: (AlxTi1-x-y-zMy)BzN, where M is at least one element selected from the group consisting of Groups 4, 5, and 6 elements, and lanthanide elements in the periodic table, 0.100≤x≤0.640, 0.001≤y≤0.100, and 0.060≤z≤0.400. The or each second layer has an average thickness of 0.5 to 100.0 nm and has an average composition: (AlpCr1-p-q-rM′q)BrN, where M′ is at least one element selected from the group consisting of Groups 4, 5, and 6 elements, and lanthanide elements in the periodic table, 0.650≤p≤0.900, 0.000≤q≤0.100, and 0.000≤r≤0.050.

    SURFACE-COATED CUTTING TOOL
    4.
    发明公开
    SURFACE-COATED CUTTING TOOL 审中-公开

    公开(公告)号：US20240157450A1

    公开(公告)日：2024-05-16

    申请号：US18281831

    申请日：2022-03-11

    申请人： MITSUBISHI MATERIALS CORPORATION

    发明人： Tomoki Ebata ,  Hidetoshi Asanuma

    IPC分类号： B23B27/14

    CPC分类号： B23B27/148

    摘要： A coating layer including first sublayers and second sublayers alternately deposited. The first sublayers each has an average thickness in a range of 0.5 nm to 100.0 nm and has an average composition represented by (AlxTi1-x-y-zMy)BzN (M is at least one element selected from the group consisting of groups 4, 5, and 6 elements and lanthanoid elements in the periodic table, 0.100≤x≤0.640, 0.001≤y≤0.100, 0.060≤z≤0.400). The second sublayers each has an average thickness in a range of 0.5 nm to 100.0 nm and has an average composition represented by (AlpCr1-p)N (0.650≤p≤0.900). The coating layer includes a cutting edge ridge and a flank and has a B content, the B content at the cutting edge being at least 60% of the B content in an area at least 1 mm away from the cutting edge ridge toward the flank.