Zhao Ming*,Wang Chang,Fang Daihao,et al.Investigation on the improvement scheme of deposit speed in LCD area of barrel alkaline Zn-Ni process[J].Plating & Finishing,2023,(9):78-84.[doi:10.3969/j.issn.1001-3849.2023.09.013]
滚镀碱性锌镍合金低电区沉积速率改善方案的探讨
- Title:
- Investigation on the improvement scheme of deposit speed in LCD area of barrel alkaline Zn-Ni process
- Keywords:
- electroplating ; Zn-Ni alloy ; high current density area ; low current density area ; deposit speed ; pull riveting ; blind hole parts
- 分类号:
- TQ153
- 文献标志码:
- A
- 摘要:
- 为了有效改善滚镀碱性锌镍合金低电区沉积速率,采用赫尔槽数据以及电化学理论进行分析,并结合电镀生产现场实际状况,重点从锌浓度、氢氧化钠浓度、镀液温度、络合剂浓度方面对赫尔槽试片高、低区厚度分布影响进行分析,确定最佳参数后,在生产线上隔离出单独的镀槽和溶锌槽配制相应镀液,并用同种工件、同电流密度和相同的电镀时间进行对比验证,对比锌镍镀层低区厚度、外观及延展性(通过拉铆装配来进行判定),结果表明滚镀锌镍合金要想在低电流密度区获得较理想的镀层,需要适当的金属锌浓度、温度、络合剂相互配合。
- Abstract:
- : This article focus on improving the deposition rate in LCD area of alkaline barrel Zn-Ni plating. Through the analysis of Hull cell data and electrochemical theory , and in combination with the actual situation of electroplating production site , it focuses on the analysis of the influence of Zn concentration , sodium hydroxide concentration , bath temperature , complexing agent concentration , on the thickness distribution in the HCD and LCD areas of Hull Cell test panels. After determining the best parameters , isolate the separated Zn-Ni plating tank and Zn dissolving tank on the production line to prepare the corresponding Zn-Ni plating bath , compare and verify with the rest of plating stations on the Zn-Ni production line with the same current density and plating time. The results show that in order to obtain an ideal Zn-Ni deposit layer in the low current density area , proper Zn concentration , temperature and complexing agent are required.
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备注/Memo
收稿日期: 2023-01-04 修回日期: 2023-03-20 * 通信作者: 赵明( 1982 —),男,工程师,研究方向:锌镍合金电镀等, email : jeremy.zhao@aircraftmetal.com .cn