| 摘要 |
The subject of the invention is a method of butt welding at least two metal sheets (1, 2) of various thicknesses, by means of a laser beam (3). The method consists in bringing the metal sheets (1, 2) into contact at their side faces (4, 5) to be joined end to end, in directing the laser beam (3) towards the thicker metal sheet (1) so that the vertical axis X-X, which passes through the focal point P of the laser beam (3) on the said metal sheet (1), is at a defined distance from the junction plane (7) of the metal sheets, and in producing a welded joint at the side faces (4, 5) joined end to end, by locally melting the said metal sheets by means of a laser beam (3). <IMAGE> |
