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筒状挺杆属於典型的反挤压件,采用反挤压工艺生产,与机械加工相比,有省工、省料、节电、提高劳动生产率、提高制品性能与质量、降低成本等优点。国内已有好几家工厂用20钢反挤压筒状挺杆。为了提高产品性能,使用20Cr材料冷挤压筒状挺杆已经提到生产日程上,为此作了如下试验研究。一、20Cr反挤压的问题 1.变形程度大筒状挺杆的形状为中空有底,属於典型的
Cylindrical tappet is a typical anti-extrusion parts, the use of anti-extrusion process, compared with machining, saving, saving material, saving, improve labor productivity, improve product performance and quality, reduce costs and so on. Several domestic factories have used 20 steel anti-extrusion cylindrical tappet. In order to improve product performance, the use of cold-rolled 20Cr cylindrical tappet material has been mentioned on the production schedule, for which the following experimental study. First, the problem of 20Cr anti-extrusion 1. Deformation degree Large cylindrical tappet hollow bottom, is a typical