公开(公告)号：US06468468B1

公开(公告)日：2002-10-22

申请号：US09692314

申请日：2000-10-20

Applicant: Hans-Claus Neubing ,  Johann Gradl ,  Armin Müller

Inventor： Hans-Claus Neubing ,  Johann Gradl ,  Armin Müller

IPC: B22F312

CPC classification number: C22C1/0416 ,  B22F2998/10 ,  B22F2999/00 ,  B22F9/082 ,  B22F1/0003 ,  B22F3/1021 ,  B22F3/1007 ,  B22F2201/02

Abstract: 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.

Abstract translation: 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。