Thermal welding, especially laser welding method for workpieces, especially motor vehicle components, has power density introduced into weld seam varied to give reduced seam thickness towards one end

摘要

A method for joining workpieces (4-6) by a thermal welding process, in which a welding head and the workpieces to be joined are moved relative to one another, for forming a welding seam (11), in which the energy density introduced into the welded seam is varied. The energy density introduced into the welded seam (11) is varied so that at respective edge zones (9,10) of the work piece, a zone (B) is formed with a welding seam thickness reducing towards one end of the welding seam (Xmax). An independent claim is also included for a device for joining workpieces, especially by laser welding.