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一、前言黑色金属压铸是一项少无切削新工艺,它具有生产效率高、压铸件尺寸精度和表面质量好、晶粒组织细,表面纤维结构完整而整体机械强度高,材料利用率高且可减少机加工设备和工时等优点。所以几十年来,虽遇到很多困难,国外一直在试验研究,并在动态机械性能(如冲击、疲劳强度等)要求不高的十几种不锈钢另件上实现了批量生
I. Introduction Black metal die-casting is a less cutting new technology, it has high production efficiency, die casting dimensional accuracy and surface quality, fine grain structure, the surface of the fiber structure is complete and the overall mechanical strength, high material utilization and Can reduce the advantages of machining equipment and working hours. Therefore, although for many decades, many difficulties have been encountered in foreign countries, experimental studies have been carried out in foreign countries and batch production of a dozen stainless steel pieces with less demanding dynamic mechanical properties (such as impact and fatigue strength)