我厂7500N空气锤砧座,在使用过程中曾在燕尾槽侧的表面多次出现裂纹。由于未及时采取措施,很快延至下砧与砧座接触部位(下图1、2所示部位),使砧座表层呈碎块断裂。碎裂面积分别为500mm×120mm,300mm×100mm。砧座重9.3 t,材质为HT200铸铁,焊接性较差,因碎裂严重,如直接在损坏处进行补焊是很难修复的,而且成本亦高。因而决定采用加垫板的方法进行焊接修复,其工艺过 I plant 7500N air hammer anvil, in the course of the dovetail groove side of the surface cracks many times. As the measures were not taken promptly, the contact area between the lower anvil and the anvil was quickly extended to the lower anvil (the area shown in Figs. 1 and 2 below) so that the surface of the anvil was broken. Fragmentation area were 500mm × 120mm, 300mm × 100mm. Anvil weight 9.3 t, made of HT200 cast iron, poor weldability, due to severe fracture, such as repairs directly in the damaged area is difficult to repair, and the cost is high. Therefore decided to use padded method of welding repair, the process