Description of self-piercing riveting technology :SPR process is to press the rivet directly into the plate to be riveted through the power provided by gas-liquid hydraulic or servo electric cylinder. Under the joint action of the riveting die, the pressure makes the plastic deformation well between the riveted plate and the rivet fill the cavity of the riveting die, so that the mechanical interlocking structure is formed at the joint to realize the connection between the riveted plate, which is an efficient and reliable plate connection technology.