沿海地区空调翅片腐蚀机理及腐蚀影响因素研究  

Research on Corrosion Mechanism Coastal Fin and Corrosion Factors

作　　者：朱天笑 毕海权[1] 段小东 王宏林[1] Zhu Tianxiao;Bi Haiquan;Duan Xiaodong;Wang Honglin(School of Mechanical Engineering,Southwest Jiaotong University,Chengdu,610031;China Railway Eryuan Engineering Group Co.,Ltd,Chengdu,610031)

机构地区：[1]西南交通大学机械工程学院,成都610031 [2]中铁二院工程集团有限责任公司,成都610031

出　　处：《制冷与空调（四川）》2021年第6期856-860,共5页Refrigeration and Air Conditioning

摘　　要：通过现场调研,文献查阅,总结了沿海地区空调翅片腐蚀机理及腐蚀过程:由于沿海地区湿度大,超过了金属铝的腐蚀临界湿度;同时盐雾沉降在翅片表面,与翅片表面的液膜形成盐溶液,破坏了氧化铝钝化膜,两者共同导致了沿海地区翅片迅速腐蚀。通过盐雾试验,设置不同大小、间距、表面平整度的翅片,测试上述三种因素对翅片腐蚀速率存在的影响。试验结果表明,翅片大小对腐蚀速率影响较小,翅片间的间距及翅片表面平整度对腐蚀速率有明显的影响。Through field investigation and literature review,this article summarizes the corrosion mechanism and corrosion process of air-conditioning fins in coastal areas:due to the high humidity in coastal areas,it exceeds the corrosion critical humidity of metal aluminum;at the same time,the salt spray settles on the surface of the fins,and the fin surface The liquid film forms a salt solution,destroying the alumina passivation film,and the two together lead to rapid corrosion of the fins in coastal areas.Through the salt spray test,fins of different sizes,spacings,and surface flatness were set to test the influence of the above three factors on the corrosion rate of the fins.The test results show that the size of the fin has little effect on the corrosion rate,and the spacing between the fins and the flatness of the fin surface have a significant effect on the corrosion rate.

关 键 词：空调翅片 防腐 大气腐蚀 盐雾试验 

分 类 号：TQ15[化学工程—电化学工业]