钛合金整体叶盘叶型精密振动电解加工实验研究  

Experimental Study on Vibration Electrochemical Machining of Titanium Alloy Blades

作　　者：雷廷玲 黄明涛[1] 张明岐[1] 褚玉程[1] 程小元[1] LEI Tingling HUANG Mingtao ZHANG Mingqi CHU Yucheng CHENG Xiaoyuan(Beijing Aeronautical Manufacturing Technology Research Institute, Beijing 100024, China)

机构地区：[1]北京航空制造工程研究所,北京100024

出　　处：《电加工与模具》2017年第2期28-32,共5页Electromachining & Mould

摘　　要：针对钛合金整体叶盘叶栅通道狭窄、叶片型面复杂、扭转角度大等特点,采用片状电极对叶片型面进行双面同步精密振动电解加工。分析了电解加工参数对叶片加工精度和表面质量的影响,通过正交试验确定了合理的工艺参数,实现了整体叶盘的叶片叶身型面、根部R角及叶间流道的一次电解成形,型面误差为-0.023~0.040 mm,表面粗糙度为Ra0.53μm,达到了设计要求。对电解加工叶片型面试件的组织形貌进行扫描电镜观察,未发现晶间腐蚀和选择性腐蚀造成的点蚀现象。Considering the narrow passage,complicated blade profile and large skew angle typical of titanium alloy blisk,a processing that conducted on double-face synchronous feeding vibration electrochemical machining was used to shape titanium alloy blade. The suitable machining parameters was determined by orthogonal test and analyzing the influence of electrochemical machining parameters on the processing quality and precision of blade. The Forming a one-time of blades profile and root are achieved. Blades were produced with profile tolerance -0.023-0.040 mm and roughness Ra0.53 μm. The intergranular corrosion and pitting was not observed through microanalysis on the blade specimens.

关 键 词：振动电解加工 钛合金 整体叶盘 叶型加工 

分 类 号：TG662[金属学及工艺—金属切削加工及机床]