SOLDERING METHOD FOR METALLIC FASTENING ELEMENTS

摘要

The invention relates to a method for joining a metallic fastening element to a metallic workpiece (5), whereby the fastening element has a support (2) that supports a soldering material (3) to which the support (2) is connected in an electrically conductive manner. The method has the following steps: the soldering material (3) is introduced into a recess (8) on the support (2) and is provided with a convex profiling (4) pointing toward the workpiece (5) to be soldered; an electrical voltage is applied between the fastening element and the workpiece (5) so that an electrical arc (6) between the soldering material (3) and the workpiece (5) causes the soldering material (3) to selectively melt thereon, and; the fastening element is pressed against the workpiece (5). The method and the fastening element, which has a profiling (4) of the soldering material (3) pointing toward the workpiece (5) to be soldered and which is appropriately designed for this method are characterized in that a local selective melting of the soldering material (3) is effected whereby preventing surrounding areas from being subjected to unnecessary thermal stress. This results in the realization of a particularly strong soldered connection between the fastening element (1) and the workpiece (5).