| 摘要 |
PURPOSE: To remove a plume without a gas flow, from above the optical axis of a laser head for laser welding. CONSTITUTION: As a means 9 for generating a magnetic field, for example, two magnets 9A, 9B are arranged with each S pole and N pole facing each other across and at the tip end of a laser guiding line 5; and the track of a high-speed ion generating from a base material 3 is taken off from the laser optical axis 8, by means of a magnetic field B that is perpendicular to the laser optical axis 8 generating from the magnets 9A, 9B, so that a plume is not formed on the laser optical axis 8. |
