电火花成形斜孔内表面尖角电化学倒圆成形规律研究  

Research on electrochemical rounding of sharp hole inner surface of EDM

作　　者：张亚雄 马宁 张景强 Zhang Yaxiong;Ma Ning;Zhang Jingqiang(College of Mechanical and Electrical Engineering,Shenyang Aerospace University,Liaoning Shenyang,110136,China)

机构地区：[1]沈阳航空航天大学机电工程学院,辽宁沈阳110136

出　　处：《机械设计与制造工程》2022年第6期75-78,共4页Machine Design and Manufacturing Engineering

摘　　要：为研究斜孔尖角电化学倒圆中相关因素对圆角成形的影响规律,采用中性盐溶液代替酸性溶液作为电解液,以孔径为0.7 mm的60°斜孔样板作为研究对象进行了电化学倒圆实验。结果表明,电极裸露长度和电极下降位置对斜孔内表面圆角成形有重要的影响。通过扫描电子显微镜(SEM)图像对比,发现电极裸露长度和电极下降位置的差值为3.8~4.2 mm时可实现稳定倒圆角。In order to study the influence of related factors in the electrochemical rounding of oblique hole sharp corners on the forming of fillets,neutral salt solution is used instead of acidic solution as electrolyte,and a 60°oblique hole sample with a diameter of 0.7 mm is used as the research object.Chemical rounding experiment.The results show that the exposed length of the electrode and the drop position of the electrode have an important influence on the formation of the fillet on the inner surface of the inclined hole.Through scanning electron microscope(SEM)image comparison,it is found that stable rounding can be achieved when the difference between the bare and exposed length of the electrode and the drop position of the electrode is 3.8~4.2 mm.

关 键 词：电化学加工 微小斜孔 工艺实验 

分 类 号：TG662[金属学及工艺—金属切削加工及机床]