毛细管电极电液束加工微小孔试验研究  

Investigation on Electrostream Drilling of Micro-holes

作　　者：贾继欣[1] 曲宁松[1] 房晓龙[1] 曾永彬[1] 

机构地区：[1]南京航空航天大学江苏省精密与微细制造技术重点实验室,江苏南京210016

出　　处：《电加工与模具》2011年第2期29-32,41,共5页Electromachining & Mould

基　　金：国家自然科学基金资助项目(50875129);航空科学基金资助项目(20100852011)

摘　　要：采用电液束加工方法,在自行研制的加工装置上,采用硝酸钠中性盐溶液为电解液,利用毛细管电极在不锈钢片上进行了一系列微小孔加工试验。通过试验研究了初始间隙、加工电压、电解液压力、进给速度对加工质量的影响。结果表明,采用硝酸钠中性盐溶液进行电液束加工试验过程基本稳定,无火花放电和短路现象发生;选用小的电压和初始间隙及较大的进给速度,均可减小加工孔的直径,提高加工精度;电解液压力对加工质量的影响不是很明显。The micro-hole was machined by using the Electrostream Drilling（ESD） with sodium nitrate aqueous solution.The effect of process parameters such as applied voltage,inlet electrolyte pressure,feed rate and initial electrode gap on the productivity and the quality of the micro-hole were investigated.It was verified that the process of ESD is stable by using sodium nitrate solution, high accuracy micro-hole could be machined successfully with low applied voltage,small intial electrode gap and large feed rate.However,the effect of the inlet electrolyte pressure was not significant.

关 键 词：电液束加工 毛细管 微小孔 

分 类 号：TG662[金属学及工艺—金属切削加工及机床]