气液混合功能电极电火花诱导烧蚀铣削的电极相对损耗研究  

Study on Electrode Relative Wear of Spark-inducing Combustion-milling by Function Electrode with Gas-liquid Mixture

作　　者：刘志东[1] 许俊[1] 李文沛[1] 徐安阳[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》2014年第1期17-21,共5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(CXLX12_0138);中央高校基本科研业务费专项资金资助

摘　　要：提出了一种基于气液混合功能电极的电火花诱导烧蚀铣削加工方法,并针对Cr12与常规电火花铣削加工进行了对比试验,结果发现同等试验条件下,气液混合电火花诱导烧蚀铣削的电极体积损耗仅为1.1%,而常规电火花铣削的电极损耗为9%。针对此现象,从极间放电特性、电极端面覆盖层等因素出发,解释了电极损耗低的原因。最后,研究了不同加工参数下,气液混合烧蚀铣削电极相对损耗的工艺规律。Put forward a new EDM method named spark-inducing combustion-milling machining based on function-electrode with gas-liquid mixture,and making the comparison experiment with the conventional ED-milling on machining of Cr12,found that the electrode volume loss rate of the spark-inducing combustion-milling machining is only 1.1%whereas the conventional ED-milling＇s is 9 %in the same test conditions. With regard to this phenomenon,the paper explains the reasons for the low electrode volume loss from the factor,such as the discharge characteristics between electrode and workpiece and the electrode surface covering layer. Finally,the rules of relative electrode wear rate of spark-inducing combustion-milling machining based on function-electrode with gas-liquid mixture under different processing parameters are studied.

关 键 词：气液混合 功能电极 电火花铣削 电极损耗 

分 类 号：TG661[金属学及工艺—金属切削加工及机床]