Study on New joint Technique for ABS Thermoplastic Materials: Electric Resistance Hot-driven Riveting

摘要

Electric Resistance Hot-driven Riveting is a new alternative spot joining process developed for polymer multi-materials structures. In the technique, a cylindrical metallic rivet is used to join one or more thermoplastic components by means of forming rivet heads on both sides of connected joint through pressure and resistance heat, which has the advantages of both mechanical rivet and resistance spot welding. In this paper, the experiments for ABS thermoplastic materials were carried out by Electric Resistance Hot-driven Riveting process, which can be clearly distinguished three stages: the cold riveting deformation, hot riveting molding and steady deformation, by acquiring and analyzing the change in the base material temperature, electrical current, voltage, electrode displacement in the riveting process. Also, mechanical property and failure mode of the joint at different duty cycles have been carried out and analyzed, shown the maximum strength of which can be up to 79% of that of base material, and indicated that Electric Resistance Hot-driven Riveting of ABS thermoplastic materials could obtain the joint of significant mechanical property, and verified that Electric Resistance Hot-driven Riveting would become a promising thermoplastic material connection method.