LIU Yan*,LI Wensheng,XIU Wenbo,et al.Research on Thickness Uniformity of Silver Coating Based on Finite Element Simulation[J].Plating & Finishing,2021,(11):36-41.[doi:10.3969/j.issn.1001-3849.2021.11.007]
基于有限元仿真方法的镀银层厚度均匀性研究
- Title:
- Research on Thickness Uniformity of Silver Coating Based on Finite Element Simulation
- 文献标志码:
- A
- 摘要:
- 采用有限元仿真技术，通过优化阴极工装上层产品距离溶液液面的距离、产品层间距、增加上下电流窃取环等措施，并对比实测镀层厚度值，动态修正阴极工装及仿真参数，提升了螺母挂镀银层厚度及均匀性。阴极和阳极在高度方向上基本实现均匀对称分布，选择合适的层间距，都可以减少同一工装上但不同层产品的镀层厚度差异。通过增加电流窃取环，将电流集中的区域由产品转移到了窃取环上，起到了消除产品外侧尖端效应的作用，有效提高了产品镀层的厚度均匀性。对比验证试验结果与仿真结果，两者具有相同的变化趋势，且误差控制在30%以内，最终使螺母内螺纹的镀层厚度达到了8~12 μm的要求。
- Abstract:
- The thickness uniformity of silver coating is improved by adjusting the distance between upper products and solution level, layer distance, adding current stealing rings of the cathodic racking based on finite element simulation technique. Uniformly symmetric distribution of the cathodic racking and anode at height direction, appropriate layer distance can both reduce the thickness difference of silver coating. By adding two current stealing rings, the current aggregation area is transformed from products to the rings, and the current point effect on the outside of the nut is eliminated, the coating thickness uniformity is effectively improved. The testing results of the thickness has the same trend with the simulation results, and its error is not more than 30%. The thickness of nut inner thread is controlled by 8~12 μm eventually.
参考文献/References:
[1] 隋明丽, 张辉. 发动机高温合金紧固件高温粘结研究[J]. 航空标准化与质量, 2012, 3:14-16.
Sui M L, Zhang H. Study on high temperature bonding of engine superalloy fastener[J]. Aeronautic Standardization & Quality, 2012, 3:14-16(in Chinese).
[2] 邱星瀚, 陈亚军, 杨雅婷, 等. V2500发动机燃烧室紧固件银镀层失效机理研究[J]. 电镀与精饰, 2021, 43(7):1-9.
Qiu X H, Chen Y J, Yang Y T. Failure mechanism of silver coatings on fasteners developed for V2500 aero-engine combustor[J]. Plating & Finishing, 2021, 43(7):1-9(in Chinese).
[3] Mohammed S D, Desai H. Basic concepts of finite element analysis and its applications in dentistry: an overview[J]. Journal of Oral Hygiene & Health, 2014, 2(156):2332-0702.
[4] Geng J P, Tan K B, Liu G R. Application of finite element analysis in implant dentistry: a review of the literature[J]. Journal of Prosthetic Dentistry, 2001, 85: 585-598.
[5] Alan R, North A B, Elsyca N V, et al. Design for electroplating: OEM automotive parts industry stands to benefit from computer-aided plating simulation[J]. Metal Finishing, 2009, 107(4):47-50.
[6] 武佳, 曹伟产, 徐曦, 等. 高压气体断路器压气缸电镀银仿真研究[J]. 电镀与涂饰, 2021, 40(7):516-524.
Wu J, Cao E C, Xu X, et al. Simulation study of silver electroplating on pressure cylinder of high-voltage circuit breaker[J]. Electroplating & Finishing, 2021, 40(7):516-524. (in Chinese).
[7] 程海雨, 王 超, 董恩吉, 等. 基于有限元仿真的实验用铜电解槽结构改进策略分析[J]. 河北水利电力学院学报, 2021,31(3):1-6.
Cheng H Y, Wang C, Dong E J, et al. Improved strategy for copper electrolytic cell structure based on finite element simulation analysis[J]. Journal of Hebei University of Water Resources and Electric Engineering, 2021,31(3):1-6(in Chinese).
[8] Chul P, Kyoung Y P. An effect of dummy cathode on thickness uniformity in electroforming process[J]. Results in Physics, 2014, 4:107-112.
[9] Lindsay J H. Shop talk: design, care & construction of plating racks[J]. Plating and Surface Finishing, 2000, 87(10):25-32.
[10] Kim N S, Oh H D, Kang T. Optimization of current distributions of electroplating on patterned substrates with the auxiliary electrode[J]. Journal of The Korean Institute of Surface Engineering, 1995, 25(3):164-173.
备注/Memo
收稿日期： 2020-08-20；修回日期： 2020-09-22
*通信作者： 刘燕，Email：aliya0719@163.com
基金项目： 国防科工局技术基础项目（JSZL2019204B007）、中国航天科工集团公司工艺振兴项目（GYZX2021A043）