Study on pickling process for pre-treatment of cyanide silver plating of aluminum and aluminum alloys Li Xiaozheng 1 2 3 Wu Rumeng 1 2 3* Zhang Hongjun 1 2 3 Ma Yingchun 1 2 3 Wang Ting 1 2 3[J].Plating & Finishing,2024,(11):30-35.
一种铝及铝合金氰化镀银前处理酸洗工艺研究
- Title:
- Study on pickling process for pre-treatment of cyanide silver plating of aluminum and aluminum alloys Li Xiaozheng 1 2 3 Wu Rumeng 1 2 3* Zhang Hongjun 1 2 3 Ma Yingchun 1 2 3 Wang Ting 1 2 3
- Keywords:
- aluminum alloys ; silver plating ; pickling ; environmental protection
- 分类号:
- TG17
- 文献标志码:
- A
- 摘要:
- 在铝合金镀银过程中,为了获得完全无氧化膜和油污的富铝表面,通常使用硝酸型酸洗剂进行清洗。然而,这种方法可能导致铝合金表面清洗不彻底或过度清洗,并且产生污染性的氮氧废气,对环境造成污染。为了减少硝酸型酸洗剂的使用,我们进行了前期市场调研、中期小槽试验、后期生产试验和成本核算,以寻找替代的酸洗剂。通过这些研究,我们改良了 6063 铝合金高压电气零部件镀银表面处理前的酸洗工艺,提出采用 M-605 作为一次酸洗剂,采用 MLD 作为脱锌酸洗剂,替代目前工业生产中使用含有硝酸的一次酸洗和脱锌酸洗工艺。经过大量的生产验证,结果表明,这种镀银表面前处理酸洗工艺可以提高产品质量和合格率,具有广泛的推广和应用前景。同时,这种改良的工艺能够减少硝酸型酸洗剂的使用量,降低氮氧废气的排放,从而减少对环境的污染。
- Abstract:
- : In the process of silver plating on aluminum alloys , nitric acid-based pickling agents are commonly used for cleaning in order to achieve a fully oxide-free and oil-free aluminum surface. However , this method can result in incomplete or excessive cleaning of the aluminum alloy surface , and it also generates polluting nitrogen oxide gas emissions , causing environmental pollution. To reduce the use of nitric acid-based pickling agents and explore alternative types of pickling agents , we conducted preliminary market research , mid-term small-scale tank experiments , and later production experiments , along with cost calculations. Through these studies , we have improved the pre-plating acid pickling process for silver plating on high-voltage electrical components. We propose the use of M-605 as a primary pickling agent and MLD as a zinc removal pickling agent , replacing the current industrial practice of using nitric acid-based primary pickling and zinc removal pickling processes. Extensive production validation has shown that this improved pre-plating acid pickling process can enhance product quality and qualification rates , with significant potential for widespread adoption. This modified process reduces the usage of nitric acid-based pickling agents while also decreasing the emission of nitrogen oxide gas , thereby reducing environmental pollution.
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备注/Memo
收稿日期: 2024-01-31 修回日期: 2024-02-25 作者简介: 李晓征( 1987 —),女,硕士,工程师 , 从事电镀等表面技术方面的工作, email : 541357812@qq.com * 通信作者: 吴茹梦, email : wrm2938176750@163.com 一种铝及铝合金氰化镀银前处理酸洗工艺研究 李晓征 1 , 2 , 3 ,吴茹梦 1 , 2 , 3* ,张红军 1 , 2 , 3 ,马迎春 1 , 2 , 3 ,王 婷 1 , 2 , 3