| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem in which, in pulse welding involving short circuit, when a constriction phenomenon is erroneously detected, short circuit is released in a state of a high short circuit current, and sputter increases. ! SOLUTION: An arc welding control method for supplying a peak current and a base current repeatedly between a welding wire and a base material, includes: a peak current period for supplying a peak current; a first base current period for supplying a first base current lower than the peak current; and a second base current period for supplying a second base current lower than the peak current and higher than the first base current. A welding current is controlled in such a manner that, after the peak current period, the first base period comes, after the first base period, the second base period comes and after the second base period, the peak current period comes. Then, by generating short circuit in the first base current period, a short circuit release current ca |
