旋转管电极电解钻孔试验研究

Investigation on Electrochemical Drilling by Rotating Tubelar Cathode

电解钻孔对于难切削材料的小孔加工具有明显优势,采用管状阴极并优化底部通液口结构、增加旋转运动等措施能有效改善电解液流场、消除空穴和分离流等弊端。基于电解钻孔试验,分析了工具阴极进给速度、电解液压力、加工电压、阴极转速对加工的影响,试验证明采用旋转管电极能显著提高加工过程的稳定性,提高小孔的加工速度和加工精度。

Electrochemical drilling has obvious advantages for the processing of small holes on difficult-to-grind materials. The rotating tubular cathode with optimized liquid outlet at the bottom and additional rotation motion could improve the distribution of electrolyte flow field,and eliminate the cavitations and separation streams. Based on the electrochemical drilling experiment,the effects of feed rate of cathode,pressure of electrolyte,processing voltage and rotational speed of cathode on the machining process were analyzed. It proved that the use of rotating tubular electrode can significantly improve the stability of the machining process,and also the speed and accuracy of processing holes.