REPAIR WELDING METHOD OF NON-FERROUS ALLOY

摘要

PURPOSE:To perform repair welding of a defective part without generation of a crack and deformation by subjecting the rear side of a base metal corresponding to the defective part of a non-ferros alloy article to build-up welding slightly wider than the groove part prior to subjecting the groove part formed by chipping the defective part to build-up welding. CONSTITUTION:The defective part of a non-ferrous alloy base material B is chipped to form a groove part C. The rear E side of the material B corresponding to the defective part is subjected to build-up welding 1 slightly wider than the groove part C at a suitable thickness (e) prior to build-up welding of the part C. After the part C is subjected to build-up welding 2, the unnecessary parts of the build-up welds 1 and 2 are chipped off and both surfaces of the material B are finished. Repair welding is performed in the same way when the defective part penetrates through the material B.