Boundary fluid constraints during electrochemical jet machining of large size emerging titanium alloy aerospace parts in gas–liquid flows:Experimental and numerical simulation  

作　　者：Yang LIU Ningsong QU Hansong LI Zhaoyang ZHANG 

机构地区：[1]School of Mechanical Engineering,Jiangsu University,Zhenjiang 212013,China [2]National Key Laboratory of Science and Technology on Helicopter Transmission,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China

出　　处：《Chinese Journal of Aeronautics》2025年第1期115-130,共16页中国航空学报(英文版)

基　　金：the National Natural Science Foundation of China(No.52205468);China Postdoctoral Science Foundation(No.2022M710061 and No.2023T160277);Natural Science Foundation of Jiangsu Province(No.BK20210755)。

摘　　要：Large size titanium alloy parts are widely used in aerospace.However,they are difficult to manufacture using mechanical cutting technology because of severe tool wear.Electrochemical jet machining is a promising technology to achieve high efficiency,because it has high machining flexibility and no machining tool wear.However,reports on the macro electrochemical jet machining of large size titanium alloy parts are very scarce,because it is difficult to achieve effective constraint of the flow field in macro electrochemical jet machining.In addition,titanium alloy is very sensitive to fluctuation of the flow field,and a turbulent flow field would lead to serious stray corrosion.This paper reports a series of investigations of the electrochemical jet machining of titanium alloy parts.Based on the flow analysis and experiments,the machining flow field was effectively constrained.TB6 titanium alloy part with a perimeter of one meter was machined.The machined surface was smooth with no obvious machining defects.The machining process was particularly stable with no obvious spark discharge.The research provides a reference for the application of electrochemical jet machining technology to achieve large allowance material removal in the machining of large titanium alloy parts.

关 键 词：Electrochemical jet machining Titanium alloys Large size parts Flow simulation Turbulent flow 

分 类 号：TG662[金属学及工艺—金属切削加工及机床] V261[航空宇航科学与技术—航空宇航制造工程]