Cemented carbide body with increased wear resistance
    1.
    再颁专利
    Cemented carbide body with increased wear resistance 失效
    具有增加耐磨性的硬质合金体

    公开(公告)号:USRE41646E1

    公开(公告)日:2010-09-07

    申请号:US11484834

    申请日:1997-07-08

    IPC分类号: B22F3/12

    CPC分类号: G01M11/37 G02B6/2551

    摘要: As there is disclosed a cemented carbide body comprising WC with an average grain size of 0.5 μm and the difference in grain size within each group is >1 μm.

    摘要翻译: 由于公开了粘结相中平均粒径<10μm的WC的硬质合金体。 在硬质合金体中,WC晶粒可以分为至少两组,其中一组较小的晶粒具有最大晶粒尺寸,而一组较大晶粒具有最小晶粒尺寸bmin,并且每组包含至少10%的 WC颗粒的总量。 根据本发明,bmin-amax>0.5μm,每组中的晶粒尺寸差异>1μm。

    Cemented carbide insert for turning, milling and drilling
    3.
    再颁专利
    Cemented carbide insert for turning, milling and drilling 失效
    用于车削,铣削和钻孔的硬质合金刀片

    公开(公告)号:USRE40026E1

    公开(公告)日:2008-01-22

    申请号:US11449008

    申请日:1997-07-08

    IPC分类号: C04B35/56

    摘要: There is disclosed a cemented carbide insert with excellent properties for machining of steels and stainless steels. The cemented carbide comprises WC and 4-25% Co. The WC-grains have an average grain size in the range 0.2-3.5 μm and a narrow grain size distribution in the range 0-4.5 μm.According to the method of the invention a cemented carbide cutting tool insert is made by mixing powders of WC, TiC, TaC and/or NbC, binder metal and pressing agent, drying preferably by spray drying, pressing to inserts and sintering. The method characterised in that a deagglomerated WC-powder with a narrow grain size distribution is used, that the powders of TiC, TaC and/or NbC are deagglomerated and that the mixing is wet mixing with no change in grain size or grain size distribution.

    摘要翻译: 公开了一种用于钢和不锈钢加工的优异性能的硬质合金刀片。 硬质合金包括WC和4-25%的Co。WC颗粒的平均晶粒尺寸在0.2-3.5μm的范围内,窄的粒度分布在0-4.5μm的范围内。 根据本发明的方法,通过混合WC,TiC,TaC和/或NbC,粘合剂金属和压制剂的粉末,优选通过喷雾干燥,压制成型和烧结来干燥硬质合金刀具插入物。 该方法的特征在于,使用具有窄粒度分布的解团聚WC粉末,将TiC,TaC和/或NbC的粉末进行解团化,并且混合是湿式混合,晶粒尺寸或晶粒尺寸分布没有变化。

    Cemented carbide insert for turning, milling and drilling
    6.
    发明授权
    Cemented carbide insert for turning, milling and drilling 有权
    用于车削,铣削和钻孔的硬质合金刀片

    公开(公告)号:US06221479B1

    公开(公告)日:2001-04-24

    申请号:US09214923

    申请日:1999-04-20

    IPC分类号: C04B3556

    摘要: There is disclosed a cemented carbide insert with excellent properties for machining of steels and stainless steels. The cemented carbide comprises WC and 4-25 wt-% Co. The WC-grains have an average grain size in the range 0.2-3.5 &mgr;m and a narrow grain size distribution in the range 0-4.5 &mgr;m. According to the method of the invention a cemented carbide cutting tool insert is made by mixing powders of WC, TiC, TaC and/or NbC, binder metal and pressing agent, drying preferably by spray drying, pressing to inserts and sintering. The method characterised in that a deagglomerated WC-powder with a narrow grain size distribution is used, that the powders of TiC, TaC and/or NbC are deagglomerated and that the mixing is wet mixing with no change in grain size or grain size distribution.

    摘要翻译: 公开了一种用于钢和不锈钢加工的优异性能的硬质合金刀片。 硬质合金包括WC和4-25wt%的Co。WC-晶粒的平均晶粒尺寸在0.2-3.5μm的范围内,并且窄的粒度分布在0-4.5μm的范围内。根据 通过混合WC,TiC,TaC和/或NbC,粘合剂金属和压制剂的粉末,优选通过喷雾干燥,压制成型和烧结来制备硬质合金刀具刀片。 该方法的特征在于使用具有窄粒度分布的解团聚WC粉末,其中TiC,TaC和/或NbC的粉末被解团聚,并且混合是湿混合而不改变晶粒尺寸或晶粒尺寸分布。