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    • 9. 发明授权
    • Method for preparation of sintered parts from an aluminum sinter mixture
    • 从铝烧结混合物制备烧结部件的方法
    • US06468468B1
    • 2002-10-22
    • US09692314
    • 2000-10-20
    • Hans-Claus NeubingJohann GradlArmin Müller
    • Hans-Claus NeubingJohann GradlArmin Müller
    • B22F312
    • C22C1/0416B22F2998/10B22F2999/00B22F9/082B22F1/0003B22F3/1021B22F3/1007B22F2201/02
    • Described is a process for producing sintered parts from an aluminum sintering mixture, wherein between 10 and 70% by weight of pure aluminum powder and between 30 and 90% by weight of an aluminum alloy powder are mixed to form an aluminum sintering mixture. The aluminum alloy powder is of the following composition: between 14 and 35% by weight of Si; between 1 and 7% by weight of Cu; between 0.3 and 2.5% by weight of Mg; between 0.3 and 6% by weight of a transition metal, the balance aluminum. The pure alloy powder and the aluminum alloy powder are each of a grain size of a maximum of 315 &mgr;m. The aluminum sintering mixture is mixed with between 0.5 and 2% by weight of compacting additive. The mix of alloy sintering mixture and compacting additive is compacted to form a green compact. The green compact is then sintered. As no low-melting phases occur in the invention, sintered bodies which are stable in respect of shape are reproducibly obtained in the sintering operation.
    • 描述了由铝烧结混合物制备烧结部件的方法,其中将10至70重量%的纯铝粉末和30-90重量%的铝合金粉末混合以形成铝烧结混合物。 铝合金粉末具有以下组成:14至35重量%的Si; 1至7重量%的Cu; 0.3至2.5重量%的Mg; 0.3至6重量%的过渡金属 金属,余量为铝。纯合金粉末和铝合金粉末的粒径最大为315μm。 铝烧结混合物与0.5-2重量%的压实添加剂混合。 将合金烧结混合物和压实添加剂的混合物压实以形成生坯。 然后烧结生坯。 由于在本发明中没有发生低熔点相,所以在烧结操作中可重复地获得在形状上稳定的烧结体。