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    推广 热搜:   ipc  电镀厂  彩涂  电镀  防腐  镀镍  研讨会  化学镀  封闭 

    190408-铸锡青铜零件铜/银/镉镀层表面产生花斑的原因分析与改进措施

       作者?#22909;?#26519;卫1,刘慧丛    单位:中国航发?#26412;?#33322;科发动机控制系统科技有限公司    日期:2019-03-01     浏览:116    评论:0    
    提示:中文核心期刊,中国科技核心期刊! DOI: 10.19289/j.1004-227x.2019.04.008铸锡青铜零件铜/银/镉镀层表面产生花斑的原因分析与改
     

    中文核心期刊,中国科技核心期刊!   



    DOI: 10.19289/j.1004-227x.2019.04.008

    铸锡青铜零件铜/银/镉镀层表面产生花斑的原因分析与改进措施

    毛林卫1,刘慧丛2, *(1.中国航发?#26412;?#33322;科发动机控制系统科技有限公司,?#26412;?102299;2.?#26412;?#33322;空航天大学,?#26412;?#34920;面工程学会,?#26412;?100191)

    摘要:滑靴组件表面电镀铜/银/镉后容易出现花斑,影响了产品的外观和耐蚀性。其主要原因是滑靴组件上铸锡青铜零件表面的砂眼在盐浴扩散焊接和电镀前处理过程中有盐分残留。电镀前采用由植酸、锡青铜缓蚀剂和分散剂组成的封闭剂处理不仅可以有效解决花斑问题,而且能在保证镀层结合力的前提下提高零件的耐蚀性。

    关键词:滑靴;铸锡青铜;电镀;铜;银;镉;缺陷;?#25910;?#25490;除

    中图分类号:TQ153.1; TG174.42 

    文献标志码:A

    文章编号:1004 – 227X (2019) 04 – 0178 – 03

    Cause analysis and improvement measures for spots defect on the surface of electroplated copper/silver/cadmium coatings on tin bronze cast parts // MAO Lin-wei, LIU Hui-cong*

    Abstract: Some spots often occurred on the surface of skid shoe assemblies after electroplating copper, silver, and cadmium successively, which affected the appearance and corrosion resistance of products. The main reason of this problem is the existence of sand holes in the tin bronze cast part, where some salts remain during the salt bath diffusion welding and pretreatment process for electroplating. The problem was solved by treatment with a sealing agent composed of phytic acid, corrosion inhibitor for tin bronze casting, and dispersant prior to electroplating. The corrosion resistance of product was also improved on the premise of a qualified adhesion of coatings.

    Keywords: skid shoe; tin bronze casting; electroplating; copper; silver; cadmium; defect; troubleshooting

    First-author’s address: Beijing Engine Control System Technology Co., Ltd. of AECC, Beijing 102299, China

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