| 摘要 |
PROBLEM TO BE SOLVED: To suppress wire fusion during arc start and occurrence of sputtering in association with wire fusion.SOLUTION: An arc start control method for consumable electrode type weldment in which a weld wire is fed to an object to be welded at a first time t1, the fed weld wire contacts the object to be welded thereby flowing welding-current I to the weld wire and the object to be welded, and an arc is generated in the welding-current I thereby starting weldment. In the method, when the weld wire and the object to be welded contact each other at a second time t2, an initial welding-current Ia as the welding-current I is supplied, and after a predetermined set period T lapsed from starting of supply of the initial welding-current Ia, a steady welding-current Ir, which is larger than the initial welding-current Ia, is supplied as the welding-current I. |
