VERFAHREN UND VORRICHTUNG ZUM SCHWEISSEN PLASTISCH VERFORMBARER WERKSTOFFE

摘要

The welding speed of plastically deformable materials when using high power density energy sources, for example a focused laser beam (34) is limited by the formation of defects (cracks, shrinkage cavities, pinholes etc.) in the welding or closed to the latter (butt-joint 11). In order to increase the welding speed while avoiding those defects, the present invention proposes the deformation of the welding (butt-joint welding 11) and the neighbouring areas of the metal sheets (14, respectively 15) so as to press the melted mass formed for the welding and provided by the welding seam, to avoid shrinkage cavities as well as pinholes and to prevent welding strains by plastic deformation in the butt-joint welding area (11). Simultaneously to the deformation of the butt-joint welding (11), it is possible to proceed to its smoothing.