加工参数对电化学多场耦合的影响

IF 0.6 4区 工程技术 Q4 MECHANICS
Mechanika Pub Date : 2022-12-05 DOI:10.5755/j02.mech.31499
Y. Chen, Xiang Li, Yichi Zhang, Jinyang Liu
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引用次数: 1

摘要

电化学加工涉及电场、流场和热场的三种耦合。阴极表面氢气的析出将影响整个电化学加工过程和工件的最终加工质量。本文采用有限元软件分析了不同电压、电解质入口压力和电极间隙对电流密度、氢体积分数、电导率和温度分布的影响。研究结果表明:加工电压的升高会使溶液的电流密度、氢体积分数和温度升高,并降低溶液的电导率。随着电解液压力的增加,电流密度和电导率增加,但氢的体积分数和温度降低。随着电极间隙的增大,电流密度、氢体积分数和温度降低,电导率提高。在进口处,电流密度和电导率较大,沿电解质流动方向逐渐减小,而氢气体积分数和温度在进口处最小,沿电解质流动方向逐渐积累,在出口处达到最大值。通过多物理场耦合仿真,可以预测电化学加工中的电流密度、温度、电导率和气泡分布,为实际电化学加工工艺参数的选择提供理论依据。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Effects of Machining Parameters on Electrochemical Multi-Field Coupling
Electrochemical machining involves three couplings between electric field, flow field and thermal field. The precipitation of hydrogen on the surface of the cathode will affect the entire electrochemical machining process and the final machining quality of the workpiece. Finite element software is used to analyze the effects of different voltages, electrolyte inlet pressure and interelectrode gap on current density, hydrogen volume fraction, conductivity and temperature distribution in this article. The research results show that the increase of processing voltage will increase the current density, hydrogen volume fraction and temperature, and decrease the conductivity of the solution. As the pressure of the electrolyte increases, the current density and conductivity increase, but the hydrogen volume fraction and temperature decrease. The current density, hydrogen volume fraction and temperature decrease, and the conductivity increases when the gap between electrodes increases. At the inlet, the current density and conductivity are relatively large, and gradually decrease along the electrolyte flow direction, while the hydrogen volume fraction and temperature are the smallest at the inlet, and gradually accumulate along the electrolyte flow direction, and reach the maximum at the outlet. Through multi-physics coupling simulation, the current density, temperature, conductivity and bubble distribution in electrochemical machining can be predicted, which can provide a theoretical basis for actual electrochemical machining process parameter selection.
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来源期刊
Mechanika
Mechanika 物理-力学
CiteScore
1.30
自引率
0.00%
发文量
50
审稿时长
3 months
期刊介绍: The journal is publishing scientific papers dealing with the following problems: Mechanics of Solid Bodies; Mechanics of Fluids and Gases; Dynamics of Mechanical Systems; Design and Optimization of Mechanical Systems; Mechanical Technologies.
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