| 摘要 |
The welding process joins the abutting edges of two metal sheets (7,8) with different thicknesses, to obtain a compound black which can then be pressed or deep drawn. Pref. the two metal sheets (7,8) to be welded together are coated on at least one side by an anti-corrosion zinc layer, with the surfaces (5,6) of the two sheets (7,8) pref. relatively offset on the side from which the welding is effected. The laser beam (10) is pref. directed onto the welding zone at an acute angle, with the greater part of the obtained weld (14) incorporated in the thicker sheet. Pref. a gas cushion is provided beneath the weld (14) during the welding process. |
