| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a laser welding method for a material of different thickness in which a thick plate and a thin plate different in thickness are butted and reliably welded to each other. <P>SOLUTION: A tip of a filler metal 25 is butted to an intersection part 24 at which a stepped face 23C of a thick plate 23 is intersected with a cut section 23A of a thin plate 22, and the tip of the filler metal 25 is irradiated with laser beams 32. Even when the tip of the filler metal has a winding habit, the winding habit can be straightened by the butting force to the intersection part 24. Thus, the tip of the filler metal 25 can be consistently arranged at an adequate position between the thin plate 22 and the thick plate 23, and the thin plate 22 and the thick plate 23 can be firmly welded to each other by sufficiently melting the filler metal 25, the thin plate 22 and the thick plate 23. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
