On the condition that extrusion speed and friction are not changed,it is optimized by adjusting size and figure line of punch head and makes technics be optimized.

• 在挤压速度和摩擦等不变的条件下,主要通过对穿孔针头部尺寸及外轮廓线形的设计进行调整,进而达到优化的目的,使金属废料最少。