| 摘要 |
PROBLEM TO BE SOLVED: To secure an excellent welding quality by sharply reducing generation amount of sputter, fume or the like in an arc length oscillation pulse arc welding, by which the bead appearance of a waved shape pattern is formed by periodically oscillating the arc length at a specified width. SOLUTION: The arc length La is correctly detected by peak voltage values HVp and LVp. A high peak voltage setting value HVps and a low peak voltage setting value LVps being the target values are set and are switched periodically to allow a high arc length HLa and a low arc length LLa to be periodically oscillated. COPYRIGHT: (C)2003,JPO
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