TRAVERSE ELECTROGAS WELDING METHOD

摘要

PURPOSE:To prevent molten metal surface precedence and incomplete penetration at the upper base material side and to perform the stable welding by adjusting the wire feed speed so that the welding speed is made between a lower limit value and an upper lower value to satisfy a specific formula in connection with the plate thickness of upper and lower base materials and performing the welding. CONSTITUTION:A welding current I to satisfy 210<=I/D<=280 wherein D is the wire diameter is used using a solid wire with the wire diameter 1.2mm-2.0mm. Furthermore, the wire feed speed is adjusted so that the welding speed Vcm/min is made between the lower limit value Va and the upper limit value Vb and the welding is performed wherein Va<=V<=Vb is provided.