基于COMSOL的电化学去除微小孔毛刺研究  

Study on Electrochemical Removal of Micro Pore Hairs Based on COMSOL

作　　者：丁庆田 何涛[1,2] 张明文[1] Ding Qingtian;He Tao;Zhang Mingwen(School of Mechanical Engineering,Anhui University of Science and Technology,Huainan,Anhui 232001,China;Collaborative Innovation Center of Mining Intelligent Technology and Equipment of Ministry of Education,Huainan,Anhui 232001,China)

机构地区：[1]安徽理工大学机械工程学院,安徽淮南232001 [2]教育部矿山智能技术与装备省部共建协同创新中心,安徽淮南232001

出　　处：《黑龙江工业学院学报（综合版）》2024年第2期116-121,共6页Journal of Heilongjiang University of Technology(Comprehensive Edition)

基　　金：国家自然科学基金项目(项目编号:52205041、51675003);安徽省高校优秀青年人才支持计划项目(项目编号:gxyq2022017);安徽省自然科学基金项目(项目编号:2008085QE216)。

摘　　要：微细钻削加工微小孔时产生的孔口毛刺,影响工件表面质量。并且微小孔毛刺难以去除,为此建立了电化学去毛刺仿真模型,分析了毛刺去除过程中的电流密度变化规律及其与材料去除速率间的对应关系,探究了孔口倒角的产生机理。结果表明:毛刺表面电流密度大小表征了电化学对材料去除能力的强弱,毛刺尖端部位电流密度大加工速度快,随着加工进行毛刺逐步变得更平滑电流密度开始分散毛刺尖端部位加工速度逐渐变慢。此外,增加阴极直径会提高加工速度,但也会导致倒角增大;而增高电极高度,有助于降低倒角,但加工时间也变得更久。在U=4V,C=12%,d=400μm,Z=150μm时加工效果较好,毛刺去除后得到的孔口倒角深度为21μm。The burrs generated during micro drilling of small holes affect the surface quality of the workpiece.Moreover,it is difficult to remove micro pores and burrs.Therefore,an electrochemical deburring simulation model is established to analyze the current density variation during the deburring process and its corresponding relationship with the material removal rate,and to explore the mechanism of pore chamfering.The results indicate that the current density on the surface of the burrs characterizes the strength of electrochemical material removal ability.The current density at the tip of the burrs is high,and the machining speed is fast.As the machining progresses,the burrs gradually become smoother,and the current density begins to disperse.The machining speed at the tip of the burrs gradually slows down.In addition,increasing the cathode diameter will increase the processing speed,but it will also lead to an increase in chamfer;increasing the electrode height helps to reduce chamfers,but the processing time also becomes longer.When U=4V,C=12%,d=400μm.Z=150μm,the machining effect is good at m,and the chamfer depth of the hole obtained after deburring is 21μm.

关 键 词：电化学 去毛刺 电流密度 孔口倒角 

分 类 号：TG176[金属学及工艺—金属表面处理] TH161[金属学及工艺—金属学]