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    MASTER ALLOY FOR PRODUCING SINTER HARDENED STEEL PARTS AND PROCESS FOR THE PRODUCTION OF SINTER HARDENED PARTS
    4.
    发明申请
    MASTER ALLOY FOR PRODUCING SINTER HARDENED STEEL PARTS AND PROCESS FOR THE PRODUCTION OF SINTER HARDENED PARTS 审中-公开
    用于生产淬火钢部件的主合金和生产淬火部件的工艺

    公开(公告)号：US20130039796A1

    公开(公告)日：2013-02-14

    申请号：US13579083

    申请日：2011-02-15

    申请人： Gilles L'Esperance ,  Ian Bailon-Poujol ,  Denis Christopherson, JR.

    发明人： Gilles L'Esperance ,  Ian Bailon-Poujol ,  Denis Christopherson, JR.

    IPC分类号： C22C38/38 ,  B22F3/24 ,  B22F3/26 ,  B22F1/00 ,  B22F9/02 ,  C22C37/06 ,  C22C38/22 ,  C22C38/02 ,  C22C38/34 ,  C22C38/20 ,  C22C38/24 ,  C22C38/26 ,  C22C38/32 ,  C22C38/40 ,  C22C38/46 ,  C22C38/48 ,  C22C38/54 ,  C22C38/58 ,  C22C38/36 ,  C22C38/56 ,  B22F3/12

    CPC分类号： B22F3/1028 ,  C22C33/02 ,  C22C35/005

    摘要： A master alloy used to produce the steel part and a process for producing a sinter hardened steel part from the master alloy are described. The powdered master alloy having a composition of iron, about 1 to less than 5 weight % C, about 3 to less than 15 weight % Mn, and about 3 to less than 15 weight % Cr, wherein the master alloy comprises a microstructure composed of a solid solution of the alloying elements and carbon, the microstructure comprising at least 10 volume % austenite and the remainder as iron compounds. The process comprises: preparing the master alloy, mixing the master alloy with a steel powder to produce a mixture wherein the weight % of the master alloy is from 5 to 35 weight % of the mixture, compacting the mixture into a shape of a part and sintering the mixture to produce the steel part, and controlling the cooling rate after sintering to produce sinter hardening. The master alloy powder can also be used as a sinter hardening enhancer when mixed with low-alloy steel powders.

    摘要翻译： 描述了用于生产钢部件的母合金和从母合金制造烧结硬化钢部件的方法。 所述粉末母合金具有铁，约1至小于5重量％的C，约3至小于15重量％的Mn和约3至小于15重量％的Cr的组成，其中所述母合金包含由 合金元素和碳的固溶体，微结构包含至少10体积％的奥氏体，其余为铁化合物。 该方法包括：制备母合金，将母合金与钢粉混合以产生混合物，其中母合金的重量％为混合物的5至35重量％，将混合物压实成部分的形状， 烧结混合物以制备钢部件，并控制烧结后的冷却速度以产生烧结硬化。 当与低合金钢粉末混合时，母合金粉末也可以用作烧结硬化增强剂。