![]() |
个人信息Personal Information
教授 博士生导师
招生学科专业:
机械工程 -- 【招收博士、硕士研究生】 -- 机电学院
机械 -- 【招收博士、硕士研究生】 -- 机电学院
性别:男
毕业院校:南京航空航天大学
学历:南京航空航天大学
学位:工学博士学位
所在单位:机电学院
办公地点:明故宫校区4号楼4309
联系方式:dywang@nuaa.edu.cn
电子邮箱:
Formation of a Convex Structure During the Counter-Rotating Electrochemical Machining of TC4 Titanium Alloy in NaCl Solution
点击次数:
所属单位:机电学院
发表刊物:INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE
关键字:Electrochemical machining Counter-rotating Convex structure Titanium alloy Stray corrosion
摘要:Because of its outstanding properties, titanium alloy is a very important material in the aerospace industry. However, the machining of titanium alloy poses many challenges for conventional mechanical methods. The aim of the present study is to fabricate a highly convex structure with straight sidewall profiles from TC4 titanium alloy by using counter-rotating electrochemical machining. Neutral NaCl solution is chosen as the working electrolyte on basis of the corrosion morphologies of TC4 alloy at different current densities, and the volumetric electrochemical equivalent of TC4 alloy in NaCl solution is obtained by using weight-loss measurements. Based on an established simulation algorithm flowchart, the evolution of the profile of the convex structure is simulated for different amounts of tool feed. The sidewall taper angle and the amount of stray corrosion on the surface of the convex structure are analyzed. The simulation results show that the taper angle decreases rapidly with the amount of tool feed, and a straight convex structure can be obtained with a suitable amount of tool feed. The amount of stray corrosion on the surface of the convex structure increases constantly because of the linear dissolution characteristic of TC4 alloy in the active NaCl solution. An experiment is also conducted using a specific experimental apparatus. A highly convex structure with a small sidewall taper angle of 3.78 degrees is fabricated successfully on the surface of a cylindrical TC4 workpiece and can be as high as 6.91 mm. The machined surface is smooth with no pitting corrosion, and the profile of the machined convex structure fits well with the simulation result.
ISSN号:1452-3981
是否译文:否
发表时间:2019-09-01
合写作者:Cao, Wenjian,He, Bin
通讯作者:王登勇