微小孔的电解加工工艺研究  

The Research on Electrolysis Machining Process of Micro Holes

作　　者：陈辉[1] 王玉魁[2] 王振龙[1] 

机构地区：[1]哈尔滨工业大学微系统与微结构教育部重点实验室,黑龙江哈尔滨150001 [2]哈尔滨工业大学机电工程学院,黑龙江哈尔滨150001

出　　处：《电加工与模具》2010年第6期17-20,31,共5页Electromachining & Mould

基　　金：黑龙江省自然科学基金资助项目(E200901);哈尔滨市科技创新人才研究专项资金资助项目(2010RFQX016)

摘　　要：为了研究微小孔的电解加工工艺,采用在线加工的微细电极和超短脉冲电压,以及复合电解液电解加工微小孔。通过在线加工电极,避免了电极的二次装夹,提高了加工孔时的定位精度。实验中,分析了不同种类的电解液及其浓度、加工电压以及脉冲宽度对微小孔加工精度的影响。实验结果表明,添加络合剂的钝化电解液既能溶解阳极的电解产物,避免发生短路,提高了加工的稳定性,又不会增大加工间隙。而超短脉冲电压能明显减小微小孔加工的侧面间隙,并保证孔直径的一致性。To research the electrolysis machining process of micro holes,we used micro thin electrode in situ machined by electrolyzing,ultra short voltage,and complex electrolyte.The usage of in situ machined micro electrode avoids the second fix of electrode,which enhances the positioning accuracy of hole.The impact of the sort of electrolyte,the concentration of electrolyte,machining voltage,and pulse width to micro holes＇ machining accuracy were investigated in experiments.Results indicate that adding the complexing agent to passivity electrolyte can dissolve the electrolysis product of anode.It avoids the emerging of short circuit,enhances the machining stability,and will not increase machining gap.The usage of ultra short voltage can sharply reduce the machining side gap of micro holes,and ensure the consistency of micro holes diameter.

关 键 词：微细电解 微细电极 微小孔 超短脉冲电压 

分 类 号：TG662[金属学及工艺—金属切削加工及机床]