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    SURFACE-COATED CUTTING TOOL
    6.
    发明公开
    SURFACE-COATED CUTTING TOOL 有权

    公开(公告)号：EP3323537A1

    公开(公告)日：2018-05-23

    申请号：EP15882287.4

    申请日：2015-07-13

    申请人： Sumitomo Electric Hardmetal Corp.

    发明人： PASEUTH, Anongsack ,  KANAOKA, Hideaki ,  DETANI, Takanori ,  IMAMURA, Shinya

    IPC分类号： B23B27/14 ,  C23C16/36 ,  C23C16/40

    CPC分类号： C23C28/044 ,  B23B27/148 ,  C23C16/36 ,  C23C16/40 ,  C23C16/403 ,  C23C28/042

    摘要： A surface-coated cutting tool (10) according to the present invention includes a base material (11) and a coating (12) formed on the base material. The coating includes an α-Al 2 O 3 layer, the α-Al 2 O 3 layer includes a plurality of crystal grains of α-Al 2 O 3 , and a grain boundary of the crystal grains contains a CSL grain boundary and a general grain boundary. Each of the α-Al 2 O 3 layers on a side of a rake face (1) and a side of a flank face (2) shows (001) orientation. In the α-Al 2 O 3 layer on the rake face side, a length L R3 of a ∑3 crystal grain boundary exceeds 80% of a length L R3-29 of a ∑3-29 crystal grain boundary and is not lower than 10% and not higher than 50% of a total length L R of all grain boundaries. In the α-Al 2 O 3 layer on the flank face side, a length L F3 of a ∑3 crystal grain boundary exceeds 80% of a length L F3-29 of a ∑3-29 crystal grain boundary and is not lower than 10% and not higher than 50% of a total length L F of all grain boundaries. A ratio L R3 /L R3-29 of the length L R3 to the length L R3-29 is higher than a ratio L F3 /L F3-29 of the length L F3 to the length L F3-29 .

    SURFACE-COATED CUTTING TOOL
    7.
    发明公开
    SURFACE-COATED CUTTING TOOL 审中-公开
    表面涂层切削工具

    公开(公告)号：EP3311940A1

    公开(公告)日：2018-04-25

    申请号：EP15882288.2

    申请日：2015-08-28

    申请人： Sumitomo Electric Hardmetal Corp.

    发明人： IMAMURA, Shinya ,  KANAOKA, Hideaki ,  PASEUTH, Anongsack ,  DETANI, Takanori

    IPC分类号： B23B27/14 ,  B23B51/00 ,  B23C5/20

    CPC分类号： C23C28/044 ,  B23B27/148 ,  C23C16/0272 ,  C23C16/308 ,  C23C16/34 ,  C23C16/36 ,  C23C16/403 ,  C23C16/56 ,  C23C28/042 ,  C23C30/005

    摘要： A coating (12) included in a surface-coated cutting tool (10) according to the present invention has an α-Al 2 O 3 layer containing a plurality of crystal grains ofa-Al 2 O 3 In a 15-µm square color map of a processed surface in parallel to a surface of the α-Al 2 O 3 layer, an area A 1 occupied by coarse crystal grains A is equal to or less than 50% and an area A 2 in the area A 1 occupied by crystal grains having a (001) plane orientation is equal to or more than 90%, an area B 1 occupied by medium-sized crystal grains B of α-Al 2 O 3 is equal to or more than 20% and equal to or less than 50%, an area B 2 in the area B 1 occupied by crystal grains having the (001) plane orientation is equal to or more than 90%, an area C 1 occupied by fine crystal grains C of α-Al 2 O 3 is equal to or more than 10% and equal to or less than 50%, an area C 2 in the area C 1 occupied by crystal grains having the (001) plane orientation is equal to or more than 50%, and a ratio of a total area of the area A 1 , the area B 1 , and the area C 1 to an area of the entire color map is equal to or more than 95%.

    摘要翻译： 本发明的表面被覆切削工具（10）所包含的被膜（12）具有包含α-Al 2 O 3的多个晶粒的α-Al 2 O 3层，并列配置在被加工面的15μm的正方形色图中 在该α-Al 2 O 3层的表面上，由粗大晶粒A占据的面积A1为50％以下，并且由（001）面取向的晶粒占据的面积A1中的面积A2等于或小于 大于90％的情况下，由α-Al 2 O 3的中等尺寸的晶粒B占据的面积B1为20％以上且50％以下，区域B1中的面积B2由具有 （001）面取向的面积为90％以上，由α-Al 2 O 3的微细晶粒C占据的面积C1为10％以上且50％以下， 具有（001）面取向的晶粒占据的C1为50％以上，面积A1，面积B1， 并且整个彩色地图的区域C1至95％以上。