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    Cemented carbide and cutting tool using same
    1.
    发明授权
    Cemented carbide and cutting tool using same 有权

    公开(公告)号：US12098448B2

    公开(公告)日：2024-09-24

    申请号：US17767443

    申请日：2021-10-15

    Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.

    Inventor： Takahiro Yamakawa ,  Kazuhiro Hirose ,  Katsuya Uchino ,  Tsuyoshi Yamamoto

    IPC: C22C29/08 ,  B23B27/14 ,  C22C1/051 ,  H05K3/00

    CPC classification number: C22C29/08 ,  B23B27/148 ,  C22C1/051 ,  H05K3/0047

    Abstract: A cemented carbide consists of: a first phase consisting of a plurality of tungsten carbide grains; and a second phase including cobalt, an average value of equivalent circle diameters of the tungsten carbide grains is 0.5 μm to 1.2 μm, on number basis, the tungsten carbide grains include less than or equal to 13% of first tungsten carbide grains each having an equivalent circle diameter of less than or equal to 0.3 μm, on number basis, the tungsten carbide grains include less than or equal to 12% of second tungsten carbide grains each having an equivalent circle diameter of more than 1.3 μm, in a histogram indicating a distribution of the equivalent circle diameters of the tungsten carbide grains. Fmax/Fmin is less than or equal to 7.0, Fmax/Fmin being a ratio of a maximum frequency Fmax to a minimum frequency Fmin.

    SURFACE-COATED CUTTING TOOL
    2.
    发明申请
    SURFACE-COATED CUTTING TOOL 审中-公开

    公开(公告)号：US20190160546A1

    公开(公告)日：2019-05-30

    申请号：US16092499

    申请日：2017-03-03

    Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.

    Inventor： Shuhei Misumi ,  Haruyo Fukui ,  Shinya Imamura ,  Kazuhiro Hirose ,  Hiroki Takeshita

    IPC: B23B27/14 ,  C23C14/06

    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.

    Surface-coated cutting tool
    3.
    发明授权
    Surface-coated cutting tool 有权

    公开(公告)号：US11167357B2

    公开(公告)日：2021-11-09

    申请号：US16092499

    申请日：2017-03-03

    Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.

    Inventor： Shuhei Misumi ,  Haruyo Fukui ,  Shinya Imamura ,  Kazuhiro Hirose ,  Hiroki Takeshita

    IPC: B23B27/14 ,  C23C14/06

    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.

    CUTTING TOOL
    6.
    发明申请
    CUTTING TOOL 有权
    切割用具

    公开(公告)号：US20150023745A1

    公开(公告)日：2015-01-22

    申请号：US14382722

    申请日：2013-02-15

    Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.

    Inventor： Kazuhiro Hirose

    IPC: B23B27/14 ,  B23C5/20

    CPC classification number: B23B27/148 ,  B22F2005/001 ,  B23B2222/16 ,  B23B2222/88 ,  B23B2224/04 ,  B23C5/20 ,  B23C2222/16 ,  B23C2222/88 ,  C22C29/02 ,  Y10T407/27

    Abstract: A cutting tool includes a substrate composed of a cermet. The cermet includes a hard phase including compounds containing Ti, at least one metal other than Ti selected from groups 4, 5, and 6 of the periodic table, and at least one element of carbon and nitrogen, a binder phase including, as a main component, an iron group metal, and unavoidable impurities. At least one type of particles selected from alumina particles and zirconia particles with an average particle size of 0.5 μm or more and 5 μm or less is scattered over a surface of a rake face of the substrate, and the concentration of at least one element of aluminum and zirconium in the surface is 0.5 at % or more and 5 at % or less.

    Abstract translation: 切割工具包括由金属陶瓷构成的基底。 金属陶瓷包括硬相，包括含有Ti的化合物，选自元素周期表第4,5和6族的Ti以外的至少一种金属，以及至少一种碳和氮元素，粘结相包括作为主要的 组分，铁族金属和不可避免的杂质。 选自平均粒径为0.5μm以上且5μm以下的氧化铝颗粒和氧化锆颗粒的至少一种颗粒散布在基板的前刀面的表面上，并且至少一种元素的浓度 表面的铝和锆的含量为0.5原子％以上且5原子％以下。

    Cutting tool
    7.
    发明授权
    Cutting tool 有权
    切割用具

    公开(公告)号：US09498828B2

    公开(公告)日：2016-11-22

    申请号：US14382722

    申请日：2013-02-15

    Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.

    Inventor： Kazuhiro Hirose

    IPC: B23B27/14 ,  B23C5/20 ,  C22C29/02 ,  B22F5/00

    CPC classification number: B23B27/148 ,  B22F2005/001 ,  B23B2222/16 ,  B23B2222/88 ,  B23B2224/04 ,  B23C5/20 ,  B23C2222/16 ,  B23C2222/88 ,  C22C29/02 ,  Y10T407/27

    Abstract: A cutting tool includes a substrate composed of a cermet. The cermet includes a hard phase including compounds containing Ti, at least one metal other than Ti selected from groups 4, 5, and 6 of the periodic table, and at least one element of carbon and nitrogen, a binder phase including, as a main component, an iron group metal, and unavoidable impurities. At least one type of particles selected from alumina particles and zirconia particles with an average particle size of 0.5 μm or more and 5 μm or less is scattered over a surface of a rake face of the substrate, and the concentration of at least one element of aluminum and zirconium in the surface is 0.5 at % or more and 5 at % or less.

    Abstract translation: 切割工具包括由金属陶瓷构成的基底。 金属陶瓷包括硬相，包括含有Ti的化合物，选自元素周期表第4,5和6族的Ti以外的至少一种金属，以及至少一种碳和氮元素，粘结相包括作为主要的 组分，铁族金属和不可避免的杂质。 选自平均粒径为0.5μm以上且5μm以下的氧化铝颗粒和氧化锆颗粒的至少一种颗粒散布在基板的前刀面的表面上，并且至少一种元素的浓度 表面的铝和锆的含量为0.5原子％以上且5原子％以下。

    Cemented carbide and tool containing the same
    9.
    发明授权
    Cemented carbide and tool containing the same 有权

    公开(公告)号：US12104229B1

    公开(公告)日：2024-10-01

    申请号：US18572807

    申请日：2023-05-12

    Applicant: Sumitomo Electric Hardmetal Corp.

    Inventor： Tomoyuki Ishida ,  Yuki Tanaka ,  Kazuhiro Hirose ,  Yasuki Kido

    IPC: C22C29/08 ,  C22C29/02 ,  C22C29/06

    CPC classification number: C22C29/08 ,  C22C29/02 ,  C22C29/067

    Abstract: A cemented carbide is composed of a first hard phase, a second hard phase, and a binder phase, wherein the first hard phase is composed of tungsten carbide particles and having a particle diameter D10 of 0.30 μm to 0.60 μm, a particle diameter D90 of 0.90 μm to 1.40 μm, the second hard phase contains at least one first compound selected from the group consisting of TiNbC, TiNbN, and TiNbCN, and having an average particle diameter of 0.03 μm to 0.50 μm, a content of the binder phase in the cemented carbide is 8.0 vol % to 16.0 vol %, an average particle diameter of the binder phase is 0.15 μm to 0.45, a particle diameter D95 of the binder phase is 1.5 μm or less, and a degree of dispersion of the binder phase is 0.15 to 0.25.

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