表调工艺条件对冷轧汽车板锌系磷化膜耐腐蚀性能的影响  

Influence of Surface Conditioning Process Conditions on Corrosion Resistance of Zinc Phosphating Film on Cold-Rolled Automotive Sheet

作　　者：沈璟虹[1] 荆旭龙 万茂松[3] SHEN Jinghong;JING Xulong;WAN Maosong(College of Intelligent Manufacturing,Wuxi Vocational College of Science and Technology,Wuxi 214028,China;School of Automotive Engineering and Management,Wuxi South Ocean College,Wuxi 214125,China;College of Automobile and Traffic Engineering,Nanjing Forestry University,Nanjing 210037,China)

机构地区：[1]无锡科技职业学院智能制造学院,江苏无锡214028 [2]无锡南洋职业技术学院汽车工程与管理学院,江苏无锡214125 [3]南京林业大学汽车与交通工程学院,江苏南京210037

出　　处：《电镀与精饰》2020年第10期21-25,共5页Plating & Finishing

基　　金：江苏省高等学校自然科学研究面上项目(18KJB460019)。

摘　　要：以耐硫酸铜点滴时间作为评判冷轧汽车板锌系磷化膜耐腐蚀性能的依据,通过单独分析表调液温度、表调液浓度和表调时间对耐硫酸铜点滴时间的影响,得到最佳表调工艺条件为:表调液温度30℃、表调液浓度4 g/L、表调时间35 s。结果表明:在最佳表调工艺条件下的磷化膜耐硫酸铜点滴时间达到185 s,较未表调处理的磷化膜耐硫酸铜点滴时间(142 s)明显延长。在最佳工艺条件下进行表调处理延长了磷化膜耐盐雾时间,磷化膜表现出较强的耐盐雾腐蚀能力,优于未表调处理的磷化膜。盐雾试验前后,磷化膜的主要成分没有明显变化。The dropping time was taken as the basis for evaluating the corrosion resistance of zinc phosphating film on cold-rolled automotive sheet.Through analysis of the influence of the temperature of surface conditioning agent,the concentration of surface conditioning agent and surface conditioning time on the dropping time of phosphating film separately,the optimal surface conditioning process conditions were obtained as follows:the temperature of surface conditioning was 30℃,the concentration of surface conditioning agent was 4 g/L and the surface conditioning time was 35 s.The results showed that the dropping time of the phosphating film obtained under the optimal surface conditioning process conditions reached 185 s,which was significantly longer than that of the phosphating film obtained without surface conditioning treatment(142 s).Surface conditioning treatment under the optimal process conditions can prolong the salt spray resistance time of the phosphating film,and the phosphating film showed a great corrosion resistance in salt spray test,which was better than that of the phosphating film without surface conditioning treatment.Before and after salt spray test,there was no significant change in the main components of the phosphating films.

关 键 词：锌系磷化膜 冷轧汽车板 表调液温度 表调液浓度 表调时间 搅拌 

分 类 号：TB43[一般工业技术]