提出了减小压力容器补块变形的综合焊接修复工艺。并对壁厚30mm16MnR的400m~3球罐进行了现场挖补修复。结果表明,采用小装配间隙,大钝边,低预热温度和锤击焊缝金属等综合挖补工艺,对于减小补块的变形和提高其性能是有效的方法。在给定的工艺条件下,锤击焊缝金属的力学性能与不锤击的焊缝金属相比没有明显变化。修复后的球罐已投入使用,两年多来运行正常。 A comprehensive welding repair process was proposed to reduce the deformation of the pressure vessel block. And wall thickness 30mm16MnR 400m ~ 3 spherical tank on-site excavation repair. The results show that it is an effective method to reduce the deformation and improve the performance of the patch by using small assembly gap, large blunt edge, low preheating temperature and hammering weld metal. Under given process conditions, the mechanical properties of hammer-weld metal did not change significantly compared to the weld metal without hammering. After the repair of the spherical tank has been put into operation, more than two years to operate normally.