| 摘要 |
PURPOSE:To perform uniform and stable build-up welding with good working efficiency, by scanning a flat beltlike filler metal on a base material longitudinally by reflected laser light while scanning continuously said metal back and forth in the transverse direction thereby melting the filler metal. CONSTITUTION:Laser light 7 is oscillated by a laser oscillator 6, and is cast onto an electromagnetic oscillating mirror 9 through a lens 8. The mirror 8 is oscillated at a prescribed angle as shown by an arrow 11 to cast the laser light 7 to a stationary mirror 10 at the width equal to the width of a filler metal 4. Then, the laser light 7 reflected by the mirror 10 scans the filler metal 4 at the width 12 equal to the width of the metal 4 and melts the filler metal thereby forming a molten pool 13 on the material 1. Here, the material 1 is moved in an arrow 3 direction at a specified speed by transfer rolls 2, 2 and the metal 4 is supplied to the pool 13 by feed rolls 5, 5-, whereby a smooth and continuous build-up part 14 is formed on the material 1. |
