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    • 9. 发明公开
    • IMPROVED METHOD OF MAKING POWDER METALLURGICAL COMPOSITIONS
    • VERBESSERTES VERFAHREN ZUR HERSTELLUNG PULVERMETALLURGISCHER ZUSAMMENSETZUNGEN
    • EP1198317A4
    • 2002-10-28
    • EP00913718
    • 2000-03-02
    • HOEGANAES CORP
    • SEMEL FREDERICK J
    • B22F1/00B22F3/02C22C33/02C22C38/00C22C38/16
    • C22C33/0207B22F1/0059
    • The present invention provides a method of making metallurgical powder compositions and a method of using the metallurgical powder compositions produced. The method of the present invention includes providing a prealloy powder containing iron and one or more alloying additives that is preferably molybdenum, and admixing the iron-based prealloy powder with a copper containing powder having a weight average particle size of 60 microns or less, and a nickel containing powder having a weight average particle size of 20 microns. The mixture containing the iron-based prealloy powder, copper containing powder, and nickel containing powder is bonded in some manner to facilitate adhesion of the prealloy powder with the other alloying powders. Preferably, a binding agent is used to effect bonding. The metallurgical powder compositions thus produced have, for example, improved mechanical strength properties when formed into metal parts.
    • 本发明提供制造冶金粉末组合物的方法和使用所制备的冶金粉末组合物的方法。 本发明的方法包括提供含有铁和一种或多种优选为钼的合金添加剂的预合金粉末,并将该铁基预制粉末与重均粒径为60微米或更小的含铜粉末混合, 含重量平均粒径为20微米的含镍粉末。 含有铁基预合金粉末,含铜粉末和含镍粉末的混合物以某种方式粘结以促进预合金粉末与其它合金粉末的粘附。 优选地,使用粘合剂来实现粘合。 如此生产的冶金粉末组合物例如在形成金属部件时具有改进的机械强度性能。