... parts, stamping with auto welding and auto riveting or auto assembly. Auto-Spot Welding Parts 1: material: Copper ... , Brass, Bronze, CuSn, CuNi, Ni, CuNiZn, Monel, rivet material: solid silver alloy contacts and bimetal contacts, welding ... , computer electronics.3: Process: punching, riveting, welding, metal processing4: Applied software for specification drawings: ...