Analysis of 430 stainless steel corrosion used in washing machine cylinder
WEI Hairui 1,2,YANG Yongchao 1,2
1. State Key Laboratory of Advanced Stainless Steel Materials，Taiyuan Iron ＆ Steel(Group)Co.，Ltd.，
Taiyuan 030003, China; 2. Technology Center, Shanxi Taigang Stainless Steel Co.，Ltd.，Taiyuan 030003, China
Abstract：The reasons of corrosion of 430 stainless steel used in the inner drum of washing machine were analyzed by means of microstructure observation of metallographic microscope, morphology observation of scanning electron microscope and composition analysis of Xray energy spectrometer. The results show that the corrosion of the sample surface is caused by the large deformation of the punching area of the steel plate, which leads to the thinning or destruction of the passivation film on the sample surface, and seriously reduces the corrosion resistance of the stainless steel. The corrosion is caused by the activation of chloride ions in the working environment. The oxygen content of ferrochrome oxide on the surface of the defect varies with the degree of corrosion. In the production process, the sample should be avoided in the wet medium for a long time, which can effectively prevent residual chloride ions from damaging the surface passivation film and significantly reduce the occurrence of corrosion defects.
收稿日期: 2021-02-05
引用本文:
卫海瑞，杨永超. 某洗衣机内筒用430不锈钢锈蚀原因分析[J]. 物理测试, 2022, 40(1): 51-.
WEI Hairui,YANG Yongchao. Analysis of 430 stainless steel corrosion used in washing machine cylinder. PHYSICS EXAMINATION AND TESTING, 2022, 40(1): 51-.
2022, Vol. 40 
