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随着少无切削工艺的不断发展,冷冲、冷挤、冷镦工艺在机械工业生产中已得到广泛应用,如高速多工位冷镦标准件、冷镦钢球及轴承滚子、冷挤轴承套圈等对于提高生产率、节约原材料起到了很大作用。由于这些工艺的发展,对模具钢材提出越来越高的要求,目前现用的高铬钢和高速钢等已不能满足生产的要求,尤其是韧性差易开裂,导致模具寿命不高,影响少无切
With the continuous development of less non-cutting technology, cold red, cold extrusion, cold heading technology has been widely used in machinery industry production, such as high-speed multi-station cold heading standard parts, cold heading steel ball and bearing roller, cold extrusion Bearing rings, etc. for improving productivity, saving raw materials played a significant role. Due to the development of these processes, higher and higher requirements are put forward on the mold steel. At present, the high-chrome steel and high-speed steel currently used can not meet the requirements of production. In particular, they are poor in toughness and easy to crack, resulting in low mold life and little impact No cut