ALUMINUM ALLOY WELDING METHOD AND ALUMINUM ALLOY WELDING EQUIPMENT

摘要

PROBLEM TO BE SOLVED: To provide an aluminum alloy welding method and an aluminum alloy welding equipment for performing rapid butt welding of end faces of two plates formed of aluminum alloy containing pure aluminum.;SOLUTION: The aluminum alloy welding method comprises a step of forming a U-shaped groove 11 in a weld surface 15 of a base metal 5, and a step of performing arc welding by adding a filler metal 4 inside the U-shaped groove 11. A welding line direction 26 with the U-shaped groove 11 extended is substantially perpendicular to the vertical direction. A groove surface forming the U-shaped groove 11 includes a flat upper flat portion 11-1 and a lower flat portion 11-2. A groove angle θ which is an angle formed by the lower flat portion 11-2 and the upper flat portion 11-1 is ≤ 6°. In this aluminum alloy welding method, the pass number of beads can be reduced, and the welding can be rapidly performed compared with the arc welding of a V-shaped groove.;COPYRIGHT: (C)2004,JPO