TC4钛合金异形型腔电解加工实验研究  

Experimental Study on ECM of TC4 Titanium Alloy Profiled Cavity

作　　者：杨振文[1] 赵建社[1] 吕焱明 范延涛[1] 刘鼎铭[1] 何亚峰[1,2] YANG Zhenwen ZHAO Jianshe LYU Yanming FAN Yantao LIU Dingming HE Yafeng(College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics,Nanjing 210016 ,China Changzhou Institute of Technology,Changzhou 213002,China)

机构地区：[1]南京航空航天大学机电学院,江苏南京210016 [2]常州工学院,江苏常州213002

出　　处：《电加工与模具》2017年第5期34-38,52,共6页Electromachining & Mould

基　　金：研究生创新基地(实验室)开放基金资助项目(kfjj20160504);江苏省自然科学基金基础研究计划面上项目(BK20161193)

摘　　要：通过分析钛合金电解加工时金属基体表面点蚀、钝化过程,研究了NaNO_3电解液、NaCl电解液及其混合电解液对TC4钛合金的电化学溶解特性的影响。对比分析不同成分电解液中的工件表面质量和加工效率,最终选用质量分数为10%NaNO_3和20%NaCl的混合电解液进行TC4钛合金异形型腔电解加工工艺实验。结果表明:采用混合电解液可实现TC4钛合金异形型腔的高效加工,稳定加工速度可达2.8 mm/min;当阴极进给速度为2.4 mm/min时,型腔一致性较好。The surface corrosion and passivation of titanium alloy substrate during ECM processing were analyzed. The dissolution characteristics of TC4 titanium alloy and influence of electrolyte has been studied by ECM with NaNO3 electrolyte,NaCl electrolyte and its mixed electrolyte. Comparing with the surface quality and processing efficiency of workpiece with different electrolytes,the mixed electrolyte with 10% NaNO3 and 20% NaCl was used for the experimental study of TC4 titanium alloy profiled cavity processing. The results showed that the TC4 titanium alloy profiled cavity with better consistency can be stably processed by using the mixed electrolyte, and the cathode feed rate can reach 2.8 mm/min. When the cathode feed rate is 2.4 mm/min,the precision can reach the process requirement.

关 键 词：电解加工 TC4钛合金 电解液 异形型腔 

分 类 号：TG662[金属学及工艺—金属切削加工及机床]