Flow Field Design and Experimental Research of ECM of Array Spherical Groove Structures with Variable Cross-sections

doi:10.3969/j.issn.1004-132X.2023.23.006

Abstract

Abstract: Variable cross-section spherical groove structure had high surface hardness and complex 3D shape. ECM had better technical and economic advantages， but the processing accuracy and processing stability were affected by the flow field obviously. In order to improve the uniformity of the electrolyte flow field， the influences of the electrolyte flow mode and channel structure on the flow field distribution were discussed based on the flow field simulation analysis， and the ECM experiments were carried out. The simulation and test results show that the zonal liquid flow in directional channel is conducive to improving the stability of the flow field and the consistency of the flow rate distribution， which may improve the processing stability. Optimization of the inlet and outlet flow channel structures may further improve the surface quality of the spherical groove， which may meet the requirements of machining stability and machining accuracy.

Key words: variable cross-section spherical groove, electrochemical machining（ECM）, flow field design, channel structure

摘要： 变截面球槽结构表面硬度高、三维形状复杂，采用电解加工具有较好的技术经济优势，但其加工精度和加工稳定性受流场影响比较明显。为提高电解液流场均匀性，基于流场仿真分析探讨了通液方式、流道结构对流场分布的影响规律，并开展了电解加工试验研究。仿真和试验结果表明：采用定向流道供液的分域通液方式有利于提高流场稳定性和流速分布一致性，可以有效提高工艺稳定性；优化出入口流道结构可以进一步提高球槽表面质量，能够满足加工稳定性和加工精度要求。

关键词: 变截面球槽, 电解加工, 流场设计, 流道结构

CLC Number:

TG662

YAN Dinghu, ZHAO Jianshe, ZHANG Changhao, GAO Weizheng, ZHU Yin, . Flow Field Design and Experimental Research of ECM of Array Spherical Groove Structures with Variable Cross-sections[J]. China Mechanical Engineering, 2023, 34(23): 2824-2831.

严丁虎, 赵建社, 张昌昊, 高伟正, 朱寅, . 阵列变截面球槽结构电解加工流场设计及试验研究[J]. 中国机械工程, 2023, 34(23): 2824-2831.

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