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tong jian du nie qian chu li de gai jin
Author(s): 
Pages: 34
Year: Issue:  1
Journal: Electroplating & Finishing

Keyword:  镀镍电解除油光亮度镀件铜基体弹簧片前处理铬酸酸溶液质量要求;
Abstract: <正> 我厂电镀微电机开关的弹簧片,是铜基体镀件,质量要求较高。表面不能有花斑、发雾,光亮度要好,厚度要有一定限制。过去,我们采用Na3PO3高温除油,再用电解除油处理,往往在镀后表面产生花斑、脱皮等现象,成品率很低。后采用铬酸—硫酸,再加入少量硝酸来浸蚀后,在盐酸溶液中再浸
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