锻锤经长期使用后;经常发生燕尾槽裂纹及磨损过限等现象。锤头、锤座的材质均系40Cr钢,焊接中极易产生裂纹。为达到焊补的目的,可采用如下方法: (1)用碳弧气刨清理裂纹至根部并防止气刨过程中产生渗碳; (2)将坡口两侧清理干净以见金属光泽为宜; (3)选用A302J507焊条。焊条须在300～500℃烘干约2h,保温1h后施焊; Forged hammer after long-term use; dozens of dovetail cracks and excessive wear and tear often occur. Hammer, hammer seat materials are 40Cr steel, welding is easy to crack. To achieve the purpose of welding repair, the following methods can be used: (1) carbon arc gouging clean cracks to the roots and to prevent carburization during gouging; (2) clean both sides of the groove to see the metal luster is appropriate ; (3) use A302J507 electrode. Electrodes must be dried at 300 ~ 500 ℃ for about 2h, after 1h insulation welding;