制造高密度零件的一种新工艺

A NEW PROCESS FOR MAKING HIGH DENSITY PARTS

介绍一种制造零件的粉末冶金新工艺,制造的零件性能可能相当于或好于球墨铸铁,密度可达7.55g/cm3。这一工艺正处于初期研发阶段,它实质上是一种首创性技术,在很大程度上既不是依靠高压力压制,也不是利用高温烧结。这一工艺有可能用于经济地生产大型零件,因为所需生坯密度低于6.8g/cm3,典型工艺温度为1175℃。本文将详细介绍当前对该工艺与技术依据的了解。

A new P/M process for making parts potentially having equivalent or better properties than the ductile cast irons and densities up to 7.55 g/cm3 is described.The process is in the early stages of development and is based on an essentially pioneer technology that does not depend significantly either on high pressure compaction or high temperature sintering.The process appears to offer considerable potential for economic production of large parts as the associated green densities and process temperatures that are required to implement it are typically below 6.8 g/cm3 and 1175℃ respectively.What is currently known of the process and underlying technology is presented in detail.