气膜屏蔽射流电解加工动态成型及实验研究  

Study on dynamic modeling and experimental investigation of air-shielding EMM in multi-physical field coupling

作　　者：王明环[1] 邱国志 鲍兆彦 许雪峰[1] WANG Minghuan;QIU Guozhi;BAO Zhaoyan;XU Xuefeng(College of Mechanical Engineering,Zhejiang University of Technology,Hangzhou 310014,China)

机构地区：[1]浙江工业大学机械工程学院,浙江杭州310014

出　　处：《浙江工业大学学报》2019年第1期34-40,共7页Journal of Zhejiang University of Technology

基　　金：国家自然科学基金资助项目(51475428)

摘　　要：气膜屏蔽射流电解加工在高压气体作用下,可成形出精度更高、表面质量更好的微结构。为了掌握气膜屏蔽射流电解加工中材料蚀除规律,对加工间隙内多场耦合作用机理进行了理论研究,并基于Fluent和Comsol软件模拟分析了加工间隙内气液分布、电场、流场和温度场等规律,得出工件表面动态成型演变规律并搭建实验设备进行了实验验证。研究结果表明:与传统的射流电解加工相比,气膜屏蔽射流电解加工下加工间隙内电流密度及温度降低、凹坑宽度及深度变小以及深径比提高,实际加工实验与模拟结果相吻合。The micro-structure with higher precision and better surface quality can be formed by the air-shielding electrochemical micromachining(AS-EMM).In order to master the rule of material erosion during the electrolysis process,the mechanism of multi field coupling in machining gap is studied.The gas-liquid phases,electric field,flow field,temperature field distribution in machining gap are analyzed with Comsol and Fluent softwares,the dynamic forming process of the work piece surface is verified by the experiments.The simulation results show that the current density and the temperature decrease.the width and depth of corrosion pits become smaller and the depth diameter ratio increases which compared with the conventional electrochemical machining.The actual machining experiment coincides with the simulation analysis.

关 键 词：电解加工 动态成型 深径比 多物理场耦合 数值模拟 

分 类 号：V261.5[航空宇航科学与技术—航空宇航制造工程]