Riveting car door lock: car door bolts are not specified high, very tight loose provisions. Before the selection of manual riveting, labor efficiency, punch riveting and hand riveting are not easy to ensure the tightness, the appearance design is not good-looking. After cold rolling riveting, not only the specified tightness is ensured, but also a variety of beautiful and elegant appearance designs such as small flat head, round string, all iron core pulling rivet inside and outside opposite sides can be riveted. Easy to install on the automatic assembly line, a manufacturer successively equipped with more than 90 sets, assembled into four production lines, improved the quality and obtained very good economic benefits. Turning riveted car into ball joint and turning into ball joint is a component related to safety factor in car, so it should have sufficient compressive strength, bending stiffness, feasibility analysis, wear resistance and service life. The ball cage seal is also the most important ring plum. Because of the cold rolling riveting seal, the stainless steel seahorse core pulling rivet has high compressive strength, good airtightness and beautiful appearance design, so this processing technology has been selected by more and more process engineers.