车用缓冲块安装区域的腐蚀行为及电阻率影响  

Deduction of Corrosion Behavior and Resistivity Influence of Vehicle Buffer Block in Installation Area

作　　者：李宽 LI Kuan(Saic Volkswagen Automotive Co.,Ltd.Shanghai 201805,China)

机构地区：[1]上汽大众汽车有限公司,上海201805

出　　处：《全面腐蚀控制》2021年第2期128-134,共7页Total Corrosion Control

摘　　要：本文介绍了橡胶缓冲块在钣金安装孔区域的腐蚀情况,主要从钣金的结构、冲压工艺性,油漆工艺性以及缓冲块材料方面分析了腐蚀产生的原因。通过研究发现了缓冲块电阻率是造成钣金安装孔区域腐蚀的重要原因,并得出缓冲块电阻率越低对钣金的腐蚀影响越严重的结论,解决了橡胶件由于电阻率低造成钣金腐蚀的投诉问题。对轿车的防腐和外观品质的提升具有积极意义。The corrosion of rubber buffer block in the mounting hole of sheet metal is introduced.The factors of corrosion from the aspects of sheet metal structure,stamping process,painting process and buffer block material are analyzed.Finally,it is found that the resistivity of buffer block is an important factor to cause the corrosion of sheet metal mounting hole,and the conclusion is that the lower the resistivity of buffer block is,the more serious the electrochemical corrosion of sheet metal is.It solves the complaint of sheet metal corrosion caused by low resistivity of rubber parts,and has positive significance for improving the anticorrosion and appearance quality of cars.

关 键 词：电阻率 橡胶缓冲块 电化学腐蚀 盐雾试验 

分 类 号：TU761.13[建筑科学—建筑技术科学]