Alloy steel powders, sintered bodies and method
    332.
    发明公开
    Alloy steel powders, sintered bodies and method 失效
    合金钢粉末,烧结体和方法

    公开(公告)号:EP0960953A2

    公开(公告)日:1999-12-01

    申请号:EP99107380.0

    申请日:1995-02-17

    Abstract: Alloy steel powders capable of obtaining high strength in a sintered state and having excellent compacting compressibility and methods of manufacturing a sintered body. The alloy steel powder comprises, by wt%, about 0.5 - 2% of Cr, not greater than about 0.08% of Mn, about 0.1 - 0.6% of Mo, about 0.05 - 0.5% of V, not greater than about 0.015 of S, not greater than about 0.2% of O, and the balance being Fe and incidental impurities. The alloy steel powder is compacted and sintered at a temperature at about 1100 - 1300°C and then cooled at a cooling rate no higher than about 1°C/s in a temperature range of from about 800°C to 400°C. The alloy steel powder can contain Nb and/or Ti and one or more of Co, W and B. Additionally, Ni powder and/or Cu powder may be adhered and dispersed onto the surface of the alloy steel powder.

    Abstract translation: 能够在烧结状态下获得高强度且具有优异的成型压缩性的合金钢粉以及制造烧结体的方法。 合金钢粉按重量百分比计包含约0.5-2%的Cr,不大于约0.08%的Mn,约0.1-0.6%的Mo,约0.05-0.5%的V,不大于约0.015的S ,不大于约0.2%的O,余量为Fe和不可避免的杂质。 合金钢粉在约1100-1300℃的温度下压制并烧结,然后在约800-400℃的温度范围内以不高于约1℃/秒的冷却速率冷却。 合金钢粉末可以含有Nb和/或Ti以及Co,W和B中的一种或多种。此外,Ni粉末和/或Cu粉末可以粘附并分散到合金钢粉末的表面上。

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