Journal of South China University of Technology (Natural Science Edition) ›› 2013, Vol. 41 ›› Issue (3): 95-100.doi: 10.3969/j.issn.1000-565X.2013.03.014

• Mechanical Engineering • Previous Articles     Next Articles

Flow Field Design and Experimental Investigation of Radial Electrochemical Machining of Blisk Channels

Sun Lun-ye Xu Zheng-yang Zhu Di   

  1. College of Mechanical and Electrical Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,Jiangsu,China
  • Received:2012-08-15 Revised:2012-10-12 Online:2013-03-25 Published:2013-02-01
  • Contact: 孙伦业(1984-)，男，博士生，主要从事电解加工技术研究． E-mail:sunlunye0113@163.com
  • About author:孙伦业(1984-)，男，博士生，主要从事电解加工技术研究．
  • Supported by:

    国家自然科学基金资助项目( 51005119) ; 江苏省自然科学基金资助项目( BK2010506) ; 机械系统与振动国家重点实验室开放基金资助项目( MSV201217) ; 南京航空航天大学中央高校基本科研业务费专项资金资助项目( NS2012052) ;第50 批中国博士后基金资助项目( 2011M500913)

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Abstract:

Rational design of a flow field is a necessary precondition for the implementation of electrochemical machining.In order to implement the electrochemical machining of blisk channels in a full range,a radial feeding techniquewas applied to the electrochemical machining of a type of blisk. In the investigation,first,a new controllablesymmetric flow field of electrolyte was designed.Then,a finite element model of the flow field was constructed tosimulate the electrolyte flow. Finally,some electrochemical machining experiments were carried out to verify the rationalityof the designed flow field. The results show that,after the application of the controllable symmetric flowfield,the surface roughness of the blisk wheel hub decreases from 2.450 μm to 0.154 μm,the repeat accuracy ofwheel hub is less than 0.07mm,and the repeat accuracies of concave and convex airfoils are both less than 0.17mm,which means that the new flow field is well designed and is effective in improving the machining quality as well asthe machining stability and consistency of wheel hub.

Key words: blisk, radial electrochemical machining, blisk wheel hub, flow field design, controllable symmetricflow field

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