| 摘要 |
PROBLEM TO BE SOLVED: To stabilize a welding state during an antistatic period upon a welding finish in switching welding where a forward feed period and a reverse feed period of a feed speed are alternately switched.SOLUTION: In an arc welding control method for performing forward feed control where the feed speed Fw of a welding wire is alternately switched into a forward feed period and a reverse feed period to generate a short-circuit period and an arc period to weld, the feed speed Fw enters the reverse feed period from a time t13 after a welding finish command St is inputted at time t11 and transits to the arc period during the reverse feed period, and at the point of time when the reverse feed period finishes at a time t14, feed is stopped to finish welding. Thus, the arc period continues for a preferable period to finish at the point of time when the feed speed Fw becomes 0, so that welding can be finished as welding remains stable.SELECTED DRAWING: Figure 2 |
