Tecnología de soldadura por resistencia WELTAC®

WELTAC® is a new development from Böllhoff that utilizes resistance welding technology and facilitates the joining of lightweight materials to steels of any type. The WELTAC® system is a flexible technology that meets today's demanding requirements for joint strength, especially in the automotive sector, as it enables the creation of mechanically strong joints ideal for body production processes. Until now, resistance spot welding processes could not create joints between dissimilar materials in vehicle bodies because these materials were thermally incompatible or only partially compatible. This technology, a further development of resistance spot welding technologies, opens up the possibility of using existing equipment in production plants to create high-strength joints between materials of different thicknesses and grades, even with hot-formed steel. In this process, a rivet-like element, made of a material compatible with the base sheet, is used as the joining element. The first stage of the process consists of inserting the WELTAC® welding element until it pierces the upper sheet of material; then this piece is welded to the lower steel sheet.