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一、什么叫滚圆? “滚圆”是消除圆形坯料镦粗后的鼓形,使其外形更加规整的辅助锻造工序。圆盘形锻件镦粗后进行滚圆,可以矫正因镦粗变形不均匀而产生的各种形状缺陷,使毛坯与零件外形相符,这样有利于切削加工中的装卡和找正工作,同时也减小了锻件外缘的机械加工余量。滚圆锻造还可以增加圆盘形锻件外缘的锻造变形量,使沿锻件圆周部分的金属组织更加细密,碳化物分布情况得到改善。因此,齿轮和各种圆片铣
First, what is the round? “Round” is to eliminate the round after upset drum shape, so that its shape more regular auxiliary forging process. Disc-shaped forging after upsetting rounded, can be corrected due to upsetting deformation caused by uneven shape defects, so that the rough shape with the parts, it is conducive to the cutting process carding and alignment work, but also by Small forging the outer edge of the machining allowance. Spheroidal forging can also increase the forging deformation of the outer edge of the disc-shaped forging, so that the metal structure along the circumference of the forging is more fine and the distribution of carbides is improved. Therefore, gears and various wafer milling