| 摘要 |
PURPOSE:To stabilize the quality of laser beam welding by executing the laser beam welding by using a powder-like filler as a filler material. CONSTITUTION:A hopper 16 is provided in the vicinity of a laser torch and a powder-like filler 15 is contained therein. On the way of a leading-in pipe 17, a filler flow rate control device 18 and a valve 19 are provided, and the tip of the leading-in pipe 17 is set to the lower part of the laser torch. In such a state, when the laser beam 14 is condensed through a condensing lens 13 and an object to be welded is irradiated by the laser beam 14 thereby, since the powder-like filler 15 is like powder, the whole surface area becomes larger than the case of a wire, and the thermal absorption efficiency at the time of laser beam welding is improved remarkably. The filler is supplied surely as powder, and also, its supply quantity can be controlled freely. In such a way, the quality of welding by radiating a laser light is improved. |
