工艺参数对短电弧-电化学复合加工表面质量的影响研究  

Effect of Process Parameters on Surface Quality of Short Electric Arc-Electrochemical Hybrid Machining

作　　者：代向宇 胡国玉[1] 周建平[1] 张儒[1] 王家豪 DAI Xiangyu;HU Guoyu;ZHOU Jianping;ZHANG Ru;WANG Jiahao(Xinjiang University,Urumqi 830047,China)

机构地区：[1]新疆大学,乌鲁木齐830047

出　　处：《航空制造技术》2024年第12期64-70,86,共8页Aeronautical Manufacturing Technology

基　　金：国家自然科学基金(52265060)。

摘　　要：针对传统短电弧铣削加工后表面存在热损伤层问题,在钛合金TC4上进行了短电弧-电化学复合加工试验研究,分析了短电弧-电化学复合加工的材料去除机制,并通过理论模型分析了影响复合加工快慢及表面质量的关键影响参数,即加工电压、工作介质电阻率和进给速度。通过单因素试验研究了关键参数对短电弧-电化学复合加工表面质量的影响。试验结果表明,利用短电弧-电化学复合加工底面间隙电化学效应可以很好地去除短电弧加工后表面热损伤层。在进给速度为4 mm/min时可以实现无热损伤层加工,加工效率为354 mm^(3)/min,加工表面粗糙度Sa为17.982μm。Aiming at the problem of thermal damage layer on the surface after traditional short electric arc machining,the short electric arc - electrochemical hybrid machining of titanium alloy TC4 was studied,and the material removal mechanism of short electric arc-electrochemical hybrid machining was analyzed.The key parameters affecting the composite machining speed and surface quality were discussed through theoretical models.That is,the processing voltage,the resistivity of the working medium and the feed speed.The effects of key parameters on the surface quality of short electric arc - electrochemical hybrid machining were studied by single factor experiments.The experimental results show that the surface thermal damage layer after short electric arc machining can be well removed by using the electrochemical effect of the bottom surface gap.When the feed speed is 4 mm/min,the thermal damage layer can be completely removed.The machining efficiency is 354 mm~3/min,and the surface roughness Sa is 17.982 μm.

关 键 词：钛合金TC4 短电弧-电化学复合加工 工艺参数 热损伤层 表面粗糙度 

分 类 号：TH161.14[机械工程—机械制造及自动化]