| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a compound welding method for feeding a second wire to a molten pool formed by the laser beam and the arc welding when simultaneously applying the welding by the laser beam and the arc welding to a workpiece to be welded, and controlling the current of the arc formed between a first wire and the workpiece to a predetermined value or below. <P>SOLUTION: In the welding method of a lap joint using the compound welding method for simultaneously applying the arc welding between a workpiece 1 to be welded and a first wire by feeding the first wire 5 to the welding position while applying laser beam 3 to the welding position of the workpiece 1, a second wire 9 is fed to a molten pool 8 formed by the laser beam 3 and the arc welding, and the current of the arc 6 formed between the first wire 5 and the workpiece 1 is controlled to the predetermined value or below. Thus, the welding amount can be increased by feeding the second wire and an excellent lap joint can be formed while using the low arc welding. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
