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    SUPER HARD ALLOY AND CUTTING TOOL USING SAME
    2.
    发明公开
    SUPER HARD ALLOY AND CUTTING TOOL USING SAME 审中-公开
    SUPERHARTE LEGIERUNG UND SCHNEIDEWERKZEUG DAMIT

    公开(公告)号：EP2474634A4

    公开(公告)日：2016-11-23

    申请号：EP10809899

    申请日：2010-08-11

    申请人： SUMITOMO ELECTRIC INDUSTRIES ,  SUMITOMO ELEC HARDMETAL CORP ,  ALMT CORP

    发明人： OKUNO TAKUYA ,  HIROSE KAZUHIRO ,  MORIGUCHI HIDEKI ,  IKEGAYA AKIHIKO ,  SASAYA KAZUO ,  YAMAMOTO YOSHIHARU

    IPC分类号： C22C29/08 ,  B23B27/14 ,  C04B35/56 ,  C22C1/05 ,  C22C14/00

    CPC分类号： C22C29/08 ,  C22C14/00

    摘要： There are provided a cemented carbide high in thermal diffusivity and excellent in wear resistance, and a cutting tool including a base material formed of this cemented carbide. The cemented carbide is a WC based cemented carbide in which a hard phase mainly constituted of WC grains is bound by a binder phase mainly constituted of Co, and is used for a cutting tool. The binder phase is substantially constituted of Co, or Co and Ni. A total content of Co and Ni is not less than 4.5 mass % and not more than 15 mass %. In this cemented carbide, the WC grains have an average diameter of not less than 0.4 µm and not more than 4 µm. Assuming that the average diameter of the WC grain is represented by x (µm), the cemented carbide has a thermal diffusivity X (cm 2 /sec) satisfying X > 0.055x + 0.238. The cemented carbide can further contain one or more elements selected from Cr, Ta, Nb, Zr, and Ti at not less than 0.05 mass % and not more than 5 mass % in total.

    摘要翻译： 提供了热扩散率高，耐磨性优异的硬质合金，以及包括由该硬质合金形成的基材的切削工具。 硬质合金是WC基硬质合金，其中主要由WC颗粒构成的硬质相主要由Co组成的粘合剂相结合，并用于切削工具。 粘结相基本上由Co或Co和Ni构成。 Co和Ni的总含量不小于4.5质量％且不大于15质量％。 在这种硬质合金中，WC颗粒的平均直径不小于0.4μm且不大于4μm。 假设WC颗粒的平均直径由x（μm）表示，硬质合金具有满足X> 0.055×+ 0.238的热扩散​​系数X（cm 2 / sec）。 硬质合金还可以含有选自Cr，Ta，Nb，Zr和Ti中的一种或多种元素，其总量不小于0.05质量％且不超过5质量％。

    HEAT-RESISTANT TUNGSTEN ALLOY, FRICTION STIR WELDING TOOL, AND METHOD FOR MANUFACTURING SAME
    5.
    发明公开
    HEAT-RESISTANT TUNGSTEN ALLOY, FRICTION STIR WELDING TOOL, AND METHOD FOR MANUFACTURING SAME 审中-公开

    公开(公告)号：EP3141625A4

    公开(公告)日：2018-01-17

    申请号：EP15799231

    申请日：2015-05-22

    申请人： ALMT CORP

    发明人： TSUJI AYURI ,  YAMAZAKI SHIGEKAZU ,  IKEGAYA AKIHIKO ,  UENISHI NOBORU

    IPC分类号： C22C32/00 ,  B22F1/00 ,  B22F3/10 ,  B23K20/12 ,  C22C27/04

    CPC分类号： C22C27/04 ,  B22F1/00 ,  B22F3/10 ,  B23K20/12 ,  C22C32/00

    摘要： An issue to be addressed by the present invention lies in providing a heat-resistant tungsten alloy provided for a plastic working tool and satisfying both a physical property such as proof stress and hardness corresponding to a workpiece having a high melting point and practicability more than conventional. The present heat-resistant tungsten alloy has a first phase containing W as a major component, a second phase having a carbonitride of at least one element of Ti, Zr and Hf and containing the carbonitride as a major component when W is removed, and a third phase having a carbide of at least one element of group 5A elements in the periodic table and containing the carbide as a major component when W is removed, the heat-resistant tungsten alloy having a Vickers hardness of 550 Hv or more at a room temperature, a displacement of 1 mm or more when leading to fracture, as determined in a three point bending test at 1200°C, and a 0.2% proof stress of 900 MPa or more, as determined in the three point bending test at 1200°C.

    COATED HARD ALLOY
    9.
    发明公开
    COATED HARD ALLOY 有权
    BESCHICHTETE HARTLEGIERUNG

    公开(公告)号：EP1207216A4

    公开(公告)日：2006-08-30

    申请号：EP00937266

    申请日：2000-06-15

    申请人： SUMITOMO ELECTRIC INDUSTRIES

    发明人： OKADA YOSHIO ,  MORIGUCHI HIDEKI ,  IKEGAYA AKIHIKO

    IPC分类号： C23C30/00 ,  C23C16/36

    CPC分类号： C23C30/005 ,  C23C16/36 ,  Y10T428/24364 ,  Y10T428/24628 ,  Y10T428/24975 ,  Y10T428/265

    摘要： A coated hard alloy excellent in wearing resistance, chipping resistance, welding resistance, and coating adhesion. The coated hard alloy has on the surface thereof an inner layer, an intermediate layer, and an outer layer. The inner layer comprises a layer of at least one member selected among the carbides, nitrides, borides, and oxides of elements in Groups IVa, Va, and VIa of the Periodic Table and solid solutions of these. The intermediate layer comprises a layer of at least one member selected among aluminum oxide, zirconium oxide, and solid solutions of these. The outer layer comprises a titanium carbonitride layer having a columnar structure. The coated hard alloy has a section in which the maximum roughness of the surface of the intermediate layer, Amax, and that of the surface of the titanium carbonitride layer having a columnar structure in the outer layer, Bmax, satisfy the relationship 1: (Bmax/Amax)

    摘要翻译： 提供了耐磨损，切屑，焊接和剥落的高耐磨性的涂层硬质合金。 涂覆的硬质金属在硬质合金的表面上设置有内层，中间层和外层。 内层包括包含选自（a）属于周期表中IVa，Va和VIa族的元素的碳化物，氮化物，硼化物和氧化物中的至少一种的层，（b） 这些的固体解决方案。 中间层包括包含选自氧化铝，氧化锆及其固溶体中的至少一种的层。 外层包括具有柱状结构的碳氮化钛层。 在表示被覆硬化金属的结构的剖面中，表示中间层的外表面的最大粗糙度的“Amax”和“Bmax”之间的关系，其表示外表面的最大粗糙度 在外层具有柱状结构的碳氮化钛层满足式1. （Bmax / Amax）<1 其中0.5μm