| 摘要 |
PURPOSE:To stably supply a filler wire in laser beam welding. CONSTITUTION:When the filler wire 7 is fed to a butt part 9a formed by abutting ends of materials 9 to be worked on each other to perform laser beam welding, welding is performed while the tip part of the filler wire 7 always being brought into contact with the surface of the materials 9 to be worked during laser beam welding, and when the filler wire 7 is brought into noncontact with the surfaces of the materials 9 to be worked during this welding, a noncontact state is detected by a detection means 10 and the filler wire 7 is brought into contact with the surfaces of the materials 9 to be worked to perform welding. |
