螺釘是一种用得最多、最广的零件;因此在制造螺釘的时候研究一下节約金屬材料的問題,是很有意义的。一般在压力机上冲制螺釘,大都采用像圖1那样的冲模,冲制出来的螺釘头都帶有飞边,因而使金屬材料受到損失。在推行無飞边鍛造中,我厂老师傅和技术人員 Screws are the most widely used parts; therefore, it makes sense to look at the problem of saving metal when making screws. Generally punching the screw on the press, most of the die as shown in Figure 1, punched out of the screw head with a flash, so that the loss of metal materials. In the implementation of flashless forging, I plant the old master and technical staff