摘要
汽车差速器壳螺栓冷镦冲头使用寿命低 (仅生产 10 0 0～ 2 0 0 0只产品 ) ,且寿命长短不一 .通过改进冷镦冲头结构 ,选用W 6Mo5Cr4V2高速钢材料 ,并采用 115 0～ 1170℃淬油 ,2 2 0℃二次回火热处理工艺后 ,冷镦冲头的使用寿命显著提高 ,是原冲头的
The automobile differential shell bolt cold forge dies,which can only produce2,000bolts at their maximum,have a short and unstable life.Through improving the structural design of dies,choosing suitable material W6Mo5Cr4V2,optimizing the process of heat treatment by using1150～1170℃quenching oil and by tempering twice under220℃,their life span can be lengthened ten times as much as their original.
出处
《南京工程学院学报（自然科学版）》
2004年第2期28-32,共5页
Journal of Nanjing Institute of Technology(Natural Science Edition)
