WELDING METHOD AND WELDING APPARATUS

摘要

PROBLEM TO BE SOLVED: To provide a welding method adequately welding both members even when a gap between the members is large or when a step between the members is large. SOLUTION: The welding method for welding end faces of a first member P1 and a second member P2 includes: a positioning step of arranging the members with their end faces being separated from each other by the predetermined distance; and a welding step of welding the end faces to each other by a welding wire W. In the welding step, a feeding step of feeding the welding wire to a fore end side in the direction of the axis C3; a distance adjusting and moving step of moving the welding wire so as to be reciprocated between the short-circuit position at which the welding wire is brought into contact with at least any one of the first and second members, and a separating position at which the welding wire is separated from the first and second members; an intersectingly moving step of reciprocatingly moving the welding wire in the intersecting direction Z intersecting the direction connecting the short-circuit position to the separating position; and a power supply step of applying the voltage between the first and second members and the welding wire are simultaneously performed. COPYRIGHT: (C)2011,JPO&INPIT