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    High strength hard alloy and method of preparing the same
    531.
    发明授权
    High strength hard alloy and method of preparing the same 失效
    高强度硬质合金及其制备方法

    公开(公告)号：US08128867B2

    公开(公告)日：2012-03-06

    申请号：US12983561

    申请日：2011-01-03

    Applicant: Masahiro Iwasaki ,  Hidefumi Yanagita ,  Masaaki Ikebe

    Inventor： Masahiro Iwasaki ,  Hidefumi Yanagita ,  Masaaki Ikebe

    IPC: C22C29/02 ,  C22C1/05 ,  C22C1/04

    CPC classification number: C22C1/051 ,  B22F2003/242 ,  B22F2998/10 ,  B22F2999/00 ,  C22C29/067 ,  C22C29/08 ,  B22F3/02 ,  B22F3/10 ,  B22F1/0088 ,  B22F3/1035 ,  B22F3/24 ,  B22F2201/30 ,  B22F2201/02 ,  B22F2201/016

    Abstract: A method for producing a cemented carbide material includes producing an M3C type double carbide (wherein M comprises M1 and M2; M1 represents one or more elements selected from the group consisting of Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, and W; and M2 represents one or more elements selected from the group consisting of Fe, Co and Ni) as a main component of the surface portion; reducing heat treating the compact at a vacuum atmosphere; carburizing the resulting WC—Co compact at a temperature of 800 to 1100° C.; subjecting the carburized compact to liquid phase sintering at a temperature of more than 1350° C. to form a sintered body; and coating a surface layer of the sintered body with a compound containing boron and/or silicon and subjecting the coated sintered body to a diffusion heat treatment at a temperature within a range from 1200 to 1350° C.

    Abstract translation: 制造硬质合金材料的方法包括制造M3C型双碳化物（其中M包括M1和M2; M1表示选自Ti，Zr，Hf，V，Nb，Ta，Cr，Mo中的一种或多种元素 和W; M2表示选自Fe，Co和Ni中的一种或多种元素）作为表面部分的主要成分; 在真空气氛下还原热处理压块; 在800〜1100℃的温度下对得到的WC-Co压坯进行渗碳。 使渗碳压实体在大于1350℃的温度下进行液相烧结以形成烧结体; 并用含有硼和/或硅的化合物涂覆烧结体的表面层，并使涂覆的烧结体在1200〜1350℃的范围内进行扩散热处理。

    High strength hard alloy and method of preparing the same
    535.
    发明授权
    High strength hard alloy and method of preparing the same 失效
    高强度硬质合金及其制备方法

    公开(公告)号：US07887747B2

    公开(公告)日：2011-02-15

    申请号：US11518519

    申请日：2006-09-11

    Applicant: Masahiro Iwasaki ,  Hidefumi Yanagita ,  Masaaki Ikebe

    Inventor： Masahiro Iwasaki ,  Hidefumi Yanagita ,  Masaaki Ikebe

    IPC: C22C29/02 ,  C22C1/05 ,  C22C1/04

    CPC classification number: C22C1/051 ,  B22F2003/242 ,  B22F2998/10 ,  B22F2999/00 ,  C22C29/067 ,  C22C29/08 ,  B22F3/02 ,  B22F3/10 ,  B22F1/0088 ,  B22F3/1035 ,  B22F3/24 ,  B22F2201/30 ,  B22F2201/02 ,  B22F2201/016

    Abstract: The present invention provides a WC—Co system (the WC—Co system in the present invention means that it comprises not only hard grains composed mainly of WC and iron group metal powder containing Co, but also at least one kind selected from carbide, nitride, carbonitride and boride of elements in Groups IVa, Va and VIa of the Periodic Table, excluding WC, as hard grains) cemented carbide having high strength and high toughness which is excellent in wear resistance, toughness, chipping resistance and thermal crack resistance. A WC—Co system compact containing an M12C to M3C type double carbide (M represents one or more kinds selected from the group consisting of Ti, Zr, Hf, V, Nb, Ta, Cr, Mo and W, and one or more kinds selected from the group consisting of Fe, Co and Ni) as a main component of the surface layer portion is subjected to a carburization treatment, and then subjected to liquid phase sintering so as to adjust the mean grain size of the surface layer WC depending on a liquid crystal sintering temperature as an indicator.

    Abstract translation: 本发明提供一种WC-Co体系（本发明中的WC-Co系不仅包含由WC组成的硬质粒子和含有Co的铁族金属粉末，还包含选自碳化物，氮化物 ，元素周期表第Ⅳa，Ⅴa和Ⅵa族元素的碳氮化物和硼化物，不含WC，作为硬晶粒）具有优异的耐磨性，耐韧性，耐崩裂性和耐热裂纹性的高强度和高韧性的硬质合金。 含有M12C〜M3C型双碳化物的WC-Co系压模（M表示选自Ti，Zr，Hf，V，Nb，Ta，Cr，Mo和W中的一种或多种，​​以及一种或多种 选自由Fe，Co和Ni组成的组分）作为表面层部分的主要成分进行渗碳处理，然后进行液相烧结，以调整表面层WC的平均晶粒尺寸取决于 以液晶烧结温度为指标。

    FABRICATION METHOD OF ELECTRODE FOR SPARK SURFACE MODIFICATION, AND SPARK SURFACE MODIFICATION ELECTRODE
    539.
    发明申请
    FABRICATION METHOD OF ELECTRODE FOR SPARK SURFACE MODIFICATION, AND SPARK SURFACE MODIFICATION ELECTRODE 有权
    火花表面改性电极的制造方法和火花表面改性电极

    公开(公告)号：US20100200548A1

    公开(公告)日：2010-08-12

    申请号：US12669402

    申请日：2008-07-16

    Applicant: Masayoshi Shiino ,  Hiroyuki Ochiai ,  Mitsutoshi Watanabe ,  Hiroki Yoshizawa ,  Issei Otera

    Inventor： Masayoshi Shiino ,  Hiroyuki Ochiai ,  Mitsutoshi Watanabe ,  Hiroki Yoshizawa ,  Issei Otera

    IPC: B23H1/04 ,  B22F3/11 ,  C04B103/00

    CPC classification number: B23H1/04 ,  B22F3/1007 ,  B22F3/1021 ,  B22F2999/00 ,  B23H1/06 ,  B22F2201/10 ,  B22F2201/02

    Abstract: A forming 7 die is filled with a powder (11) of electrode material, the powder (11) of electrode material filled in the forming die is compressed to form a porous powder compact (27), the porous powder compact (27) is set in place in a chamber (25) of a heat-treating furnace (23), the chamber (25) is supplied with inert gas or hydrogen gas, and inert gas or hydrogen gas is heated by heaters (39) in the heat-treating furnace (23) and blown toward the powder compact (27), as blows circulating in the chamber (25), whereby the powder compact is heated with heat of convection flows of inert gas or hydrogen gas, or mixed gas containing inert gas as principal component and hydrogen gas, so the electrode material of the powder compact is sintered.

    Abstract translation: 在电极材料粉末（11）中填充成形体7，将填充在成形模具中的电极材料粉末（11）压缩，形成多孔粉末压块（27），将多孔粉末压块（27） 在热处理炉（23）的室（25）的适当位置，向室（25）供给惰性气体或氢气，并且通过加热器（39）在惰性气体或氢气中加热惰性气体或氢气 炉（23）吹入粉末压块（27），随着在室（25）中的循环循环，粉末压块被加热，惰性气体或氢气的对流流动的热，或包含惰性气体的混合气体作为主要 组分和氢气，因此粉末压块的电极材料被烧结。

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