本文介绍了对失效大型锤头的修复。为防止因较大焊接应力而引起裂纹产生,采取了一些工艺措施如镶块、窄间隙细喷嘴焊接、简化热处理工序,减少了工件生产周期,并采用塑性较好的 J350焊条作过渡层,以改善由于钢材焊接性差对产生裂纹的敏感性。通过采取上述措施大大减少了熔敷金属量,提高工效,降低成本,缩短生产周期,同时保证了修复质量。 This article describes the repair of a failed large hammerhead. In order to prevent the crack from being generated due to the large welding stress, a number of technological measures such as welding with narrow nozzle and narrow nozzle are adopted to simplify the heat treatment process, reduce the production cycle of the workpiece, and adopt the plastic better J350 electrode as the transition layer Improves susceptibility to cracking due to poor weldability of steel. By taking the above measures greatly reduce the amount of deposited metal, improve work efficiency, reduce costs and shorten the production cycle, while ensuring the quality of the repair.