SPR技术板材开裂问题的分析与预防  

Analysis and Prevent for the SPR Technology Plate Materials Crack

作　　者：闫旭东 郭东栋[1] 邹尚博 YAN Xudong;GUO Dongdong;ZOU Shangbo(Beijing Benz Automobile Company Limited,Beijing 100176,China)

机构地区：[1]北京奔驰汽车有限公司,北京100176

出　　处：《汽车实用技术》2023年第24期131-137,共7页Automobile Applied Technology

摘　　要：半空心自冲铆接(SPR)属于机械连接,是汽车白车身焊接中常用的连接技术之一。在实际生产中,SPR技术主要用于异种金属连接,尤其是铸铝件,但是铸铝件很容易因为高压力而开裂,因此对于铸铝件的各项性能指标就要求很高。文章主要用材料分析和现场验证相结合的方式,从材料、参数、铆点位置等相关方面探索板材开裂的原因,最终得出解决办法及相关的预防方法,同时为方便理解,文章介绍了SPR技术的原理及设备构成。通过实验,来解决生产出现的问题,具有现实的指导意义。Semi-tubular punch riveting(SPR)belongs to mechanical connection,and is one of the common connection techniques in the welding of automobile body in white.In actual production,SPR technology is mainly used for dissimilar metal connection,especially for cast aluminum parts,but cast aluminum parts are easy to crack because of high pressure,so the performance indicators of cast aluminum parts are very high.This paper mainly uses the combination of material analysis and field verification to explore the causes of plate cracking from materials,parameters,riveting points and other related aspects,and finally comes up with solutions and related prevention methods.At the same time,in order to facilitate understanding,the paper introduces the principle of SPR technology and equipment composition.It has practical guiding significance to solve the problems in production through experiments.

关 键 词：SPR技术 机械连接 铸铝件 板材开裂 

分 类 号：TG456.7[金属学及工艺—焊接]