关键词: 车身结构；防腐结构设计；腐蚀原因；设计方法；汽车车身；应用分析

Abstract: The corrosion of automobile body has become one of the key problems that people pay more and more attention to, so it is necessary to improve the anti-corrosion performance of automobile body. Based on the analysis of the causes of sheet metal corrosion caused by improper automobile structure design, this paper expounded the design methods to improve the anti-corrosion performance of automobile body from the aspects of body anti-corrosion structure design steps, electrophoresis, drainage, wet area sealing, body anti-stone impact and so on. Thus, automobile workers can effectively ensure the overall anti-corrosion performance of the vehicle body at the beginning of vehicle model design, improve product quality, and reduce the cost of later mold design change and process verification.

Key words: Body structure; Anti-corrosion structure of design; Causes of sheet metal corrosion; Design methods; Automobile body; Application analysis