放电诱导可控烧蚀及电火花修整成形加工试验研究  

Experimental Study on Forming Processing by Controllable Spark-induced Combustion and EDM Finishing

作　　者：刘志东[1] 凌加健[1] 陈文安[1] 王祥志[1] 

机构地区：[1]南京航空航天大学机电学院,江苏南京210016

出　　处：《电加工与模具》2013年第5期21-26,共6页Electromachining & Mould

基　　金：国家自然科学基金资助项目(51175256;51205197);江苏省自然科学基金资助项目(BK2011732);航空科学基金资助项目(2011ZE52060);江苏省普通高校研究生科研创新计划资助项目-中央高校基本科研业务费专项资金资助(CXLX12_0138)

摘　　要：提出了放电诱导可控烧蚀及电火花修整成形加工方法,通过试验研究了电参数和非电参数对加工的影响。结果表明:该加工方法适合采用正极性加工;材料蚀除率受脉宽、脉间、低压电流、气体通断时间等参数的影响较大,受液位高度和电极壁厚的影响较小;电极损耗率受上述参数的影响均较小,且保持在极低的水平。通过优化参数选取,与常规水中加工实验对比表明:放电诱导可控烧蚀及电火花修整成形加工的材料蚀除率是常规水中不通氧加工的8.81倍,而电极相对损耗率只有其25.5%。A new method called forming processing by controllable spark-induced combustion and EDM finishing is proposed. Experimental researches are carried out to realize the effect of basic operating parameters such as electrical and non-electrical parameters on machining performance. The result shows that it is suitable for positive polarity machining, and MMR is greatly influenced by these parameters such as pulse width, pulse interval, low-voltage current, and gas-off time and so on, and less affected by liquid height and electrode wall thickness. TWR is less affected by these parameters above-mentioned and remained at low levels. Finally compared with conventional machining with the optimization parameters, the results show that the ablation processing MRR is 8.81 times than conventional processing and TWR is only its 25.5 %.

关 键 词：电火花加工 可控烧蚀 蚀除率 电极相对损耗率 

分 类 号：TG661[金属学及工艺—金属切削加工及机床]