挤压成形

There are lots of advantages by cold extrusion for straight knurl nut in a single process.

直纹滚花螺母采用挤压一次成艺 ,成效显著。

Abstract： There are lots of advantages by cold extrusion for straight knurl nut in a single process.

摘 要： 直纹滚花螺母采用挤压一次成艺，成效显著。