BUTT WELDING METHOD FOR L SHAPED PART

摘要

PURPOSE:To prevent a welding crack by welding a copper alloy and a solid refractory by abutting it as a patch at an adequate position to the composite member abutted by forming the V groove to which front side groove width is wider than the back side. CONSTITUTION:A welding is started from the part surrounded by the copper patches 6, 12 of the lower end part of the perpendicular part of a lounge material 1. A torch 7 is lifted according to the accumulation of a welding metal and when the welding metal reaches the upper end of the lounge material 1, the welding is performed by moving the torch 7 and a nozzle 8 in an arrow mark 11 direction. With this method a welding crack can be prevented enough.