| 摘要 |
PROBLEM TO BE SOLVED: To provide an AC pulse arc welding method in which conduction of the welding current Iw is repeated with conduction of the electrode negative current and conduction of the peak current and the base current being one pulse period, the electrode negative current ratio as a ratio of the time-integrated value of the electrode negative current in one pulse period to the time-integrated value of the welding current is set by the set electrode negative current ratio, the feed speed of a welding wire as a consumable electrode is set by the set feed speed, and the condition of the mean value of the welding current and the electrode negative current ratio can be rapidly and correctly set. SOLUTION: In the AC pulse arc welding method, the mean value of the welding current is set by the set welding current Is, the set feed speed Fsc is operated and automatically set based on a predetermined transformation function circuit FSC with the set welding current Is and the set electrode negative current ratio Rs as the inputs. COPYRIGHT: (C)2006,JPO&NCIPI
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