高速钢是一种良好的工具材料,在刃具、模具生产中得到日益广泛的应用,几乎每个锻造车间都要同它打交道。但是,高速钢的锻造难度较大,生产中往往出现这样或那样的缺陷,甚至造成无法挽救的废品,其中尤以锻造裂纹危害为最甚。为了减少高速钢锻造的废品损失,现将高速钢镦粗、拔长、冲孔等工序中常出现的裂 High-speed steel is a good tool material used in the production of cutting tools and dies, and is being used in almost every forging shop. However, the high-speed steel forging more difficult, often appear in production of one kind or another defect, and even cause irreparable scrap, especially forging the most dangerous crack. In order to reduce the loss of high-speed steel forging scrap, now high-speed steel upsetting, drawing, punching and other processes often appear in the crack