The product has excellent tooling quality and machiningperformance, so as to alleviate and avoid the deformation of ejector pin because of heat treatment.
该产品具有良好易切削性能和机械加工性能，从而避免了薄壁推管(司筒)因热处理而产生变形。
3
Surface roughness is one of the marks in evaluating the product accuracy and plays an important role in predicting the capability of machiningperformance.