攀钢无铬钝化热镀锌板白锈缺陷研究  

Study on White Rust Defects of Chromium-Free Passivation Hot Dip Galvanized Sheets from Panzhihua Steel Company

作　　者：孙伟 SUN Wei(Manufacturing Department of Panzhihua Steel Vanadium,Panzhihua 617000,China)

机构地区：[1]攀枝花钢钒公司制造部,四川攀枝花617000

出　　处：《材料保护》2019年第12期154-157,161,共5页Materials Protection

摘　　要：为了弄清攀钢镀锌卷无铬钝化表面处理板产生白锈缺陷的原因,结合无铬钝化液成膜机理、无铬钝化液成膜的工艺,利用扫描电镜(SEM)检测、镀锌板面粗糙度检测分析了缺陷产生的原因,并提出了改善攀钢无铬钝化工艺的具体措施:改善涂辊和无铬钝化前镀锌板表面粗糙度的均匀性;采用适当的烘干固化工艺。In order to understand the causes of white rust defects in chrome-free passivation surface treatment sheets of Panzhihua Steel Company,combined with film formation mechanism and process of chromium-free passivation solution,scanning electron microscope(SEM)detection and surface roughness detection were used to analyze causes of white rust on galvanized sheets after chrome-free passivation treatment,and the measures for improvement of chromium-free passivation technique in Panzhihua Steel Company was proposed:one was to improve the uniformity of surface roughness of roller coating and galvanized sheet before chromate free passivation,the other one was to adopt proper drying and curing process.

关 键 词：热镀锌 无铬钝化 白锈 SEM 粗糙度 成膜 

分 类 号：TG174.4[金属学及工艺—金属表面处理]