| 摘要 |
PROBLEM TO BE SOLVED: To suppress arc cutting caused by magnetic blow in a two-wire welding method. SOLUTION: In the two-wire welding control method, the application of peak voltage Vp and the application of base voltage Vb are repeated to a space between a consumption electrode and a base material as one period, thus a welding current Iw is supplied and an arc is generated so as to form a molten pool, and the welding is performed while feeding a filler wire to the molten pool. Wherein, when the occurrence of the magnetic flow is discriminated by the increase of the base voltage Vb, the fact that a magnetic blow is caused in the arc is discriminated (time t 42), and an electric current If in a direction equal to that of the welding current Iw is supplied through the filler wire so as to eliminate the magnetic flow (time t 43). Since the electric currents in the same direction are supplied through the welding wire and the filler wire, attraction force is acted on the arc deviated by the magnetic flow so as to normalize the deviation of the arc. COPYRIGHT: (C)2010,JPO&INPIT |
