在锤上进行自由锻造时,为了避免更换砧子浪费时间,可以采用联合平面缺口砧子(如附图)。在普通的平面砧子1上钻两个孔,当需要用缺口砧子时,就可在平面砧子上装上专用的缺口垫块2,这垫块带有两根导柱3,与垫块用热配合装配牢固。这两个导柱可在平砧1的 In hammer for free forging, in order to avoid wasting time to replace the anvil, you can use the joint plane gap anvil (Figure). Two holes are drilled in a common plane anvil 1, and when the anvil is needed, a special notched spacer 2 can be mounted on the planar anvil with two guide posts 3, Fit with heat with a firm fit. The two guide posts can be on the flat anvil 1