半空心自冲铆成形性影响因素研究

Research on Self-Piercing Riveting Quality Control and Formability Factors

阐述了机械连接技术在汽车白车身制造中的应用趋势,半空心自冲铆技术作为钢铝连接中最为广泛应用的技术,其过程工艺参数对白车身连接强度的影响至关重要。阐述了半空心自冲铆工艺和质量控制方法以及汽车量产过程中白车身半空心自冲铆常见的2种质量缺陷,分析了铆钉高度不足及封闭端破裂问题的影响因素,通过对铆接设备进行调试和铆接工艺参数优化,解决了铆钉高度超差和封闭端破裂质量缺陷,为白车身制造过程中质量问题的解决提供了解决思路和方向。

This paper elaborated the application trend of mechanical connection technology in automotive Body In White(BIW)manufacturing.Semi-hollow and self-piercing riveting technology as the most widely applied technology of steel aluminum connecting,its process technology parameters are crucial to BIW connection strength.This paper elaborated the semi-hollow and self-piercing riveting process and quality control method as well as 2 common quality defects of semi-hollow self-piercing rivet of BIW in mass production of automobile,analyzed the influencing factors of lack of height and rupture of closed end of rivet.By commissioning of riveting equipment and optimization of riveting process parameters,the above defects were solved,providing solution and direction to solve quality issues in BIW manufacturing.