| 摘要 |
PROBLEM TO BE SOLVED: To provide an arc welding method for instantly stabilizing an arc even when instability of the arc is caused at the start of welding and for suppressing defects of a weld bead. SOLUTION: In the arc welding method, the arc is generated between a welding wire 17 and a welding base material W to perform welding. At the start of welding of generating the arc, it is determined whether or not a welding voltage Vw to be supplied between the welding wire 17 and the welding base material W has exceeded a prescribed threshold voltage Vt. When excess is determined, arc generation is stopped and then the arc is generated again. According to such method, the arc can be instantly stabilized by setting the threshold voltage Vt to a proper value. COPYRIGHT: (C)2011,JPO&INPIT
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