一例装饰性镀铬光亮度不足故障的解决方案  

Countermeasures to a case of poor brightness problem in electroplating of decorative chromium coatings

作　　者：李晓静[1,2] LI Xiao-jing(Henan Polytechnic Institute,Nanyang 473009,China)

机构地区：[1]河南工业职业技术学院,河南南阳473009 [2]河南省柔性制造重点实验室,河南南阳473009

出　　处：《电镀与涂饰》2018年第16期725-727,共3页Electroplating & Finishing

基　　金：河南省青年骨干教师资助计划(2012GGJS-248);豫西集团博士后基金(2016BS0702)

摘　　要：从镀液中铬酸酐与硫酸的质量浓度比、三价铬含量、金属杂质含量、硝酸根离子含量、温度、阳极导电性等方面分析了某端盖产品电镀装饰铬光亮度不足的原因。通过现场调研和分析进行排查,确定了铬酸酐与硫酸的质量浓度比偏高、三价铬含量过高、金属杂质混入以及阳极导电不良是主要原因。采取相应的措施后成功解决了问题。The causes of poor brightness defect for decorative chromium coating on a type of end cap were analyzed from several respects including mass concentration ratio of chromic anhydride to sulfuric acid,trivalent chromium ion content,metal impurity content,nitrate ion content,bath temperature,and anode’s conductivity.The results of site investigation and analysis showed that the main causes were as follows:too high mass concentration ratio of chromic anhydride to sulfuric acid,too many of trivalent chromium ions,contamination with metal impurities,and poor conductivity of anode.The problem was solved successfully by taking some corresponding measures.

关 键 词：电镀铬 光亮度 缺陷 镀液成分 阳极 故障处理 

分 类 号：TQ153.11[化学工程—电化学工业]