| 摘要 |
<p>The subject of the invention is a method of butt welding at least two metal sheets (1, 2) having different thicknesses, these being greater than 3 mm. The method consists in producing a bevel (3) on one of the main faces of the thicker metal sheet (1) in order to bring the thickness of its side face (4), intended to be butt joined to a side face (5) of the thinner metal sheet (2), to a value e1 lying between the thickness E of the thicker metal sheet (1) and the thickness e of the thinner metal sheet (2), in bringing the metal sheets (1, 2) into contact by their side faces (4, 5) to be butt joined and in producing a welded joint at the butt-joined side faces (4, 5) by localised melting of the metal sheets by means of a laser beam. <IMAGE></p> |
