我厂一台C41-750型空气锤,由于地基不符合要求,锻造温度低、工件壁薄等原因,使锤杆产生了560mm长的横向裂纹,裂纹位置如图1所示。通过查原始资料,得知锤杆材质是45铸钢,锤杆裂纹处是空心结构,壁厚40mm。由于条件所限,宜采用不拆卸法焊修。但这样难度较 I plant a C41-750 air hammer, because the foundation does not meet the requirements, forging temperature is low, the workpiece thin wall and other reasons, the hammer produced a 560mm long horizontal crack, crack location shown in Figure 1. By checking the original data, that the hammer rod material is 45 cast steel, hammer rod crack is hollow, wall thickness 40mm. Due to limited conditions, it is advisable not to dismantle welding method repair. But this is more difficult