Investigation on flow field in electrochemical trepanning of aero engine diffuser

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• 作者：Zhouzhi Gu ; Dong Zhu ; Tingyu Xue ; Ao Liu…
• 关键词：Electrochemical trepanning ; Diffuser ; Flow field
• 刊名：The International Journal of Advanced Manufacturing Technology
• 出版年：2017
• 出版时间：March 2017
• 年：2017
• 卷：89
• 期：1-4
• 页码：877-884
• 全文大小：
• 刊物类别：Engineering
• 刊物主题：Industrial and Production Engineering; Media Management; Mechanical Engineering; Computer-Aided Engineering (CAD, CAE) and Design;
• 出版者：Springer London
• ISSN：1433-3015
• 卷排序：89

文摘

Electrochemical trepanning process is an economical approach of the electrochemical machining (ECM) for manufacturing ruled surface blade made of hard-to-cut material. In electrochemical trepanning, the flow field at the front gap is very important to influence the processing stability, efficiency, and surface quality. In this paper, the effect of cathode structure on flow field is investigated by simulation. An optimized cathode combining proper rounding at the internal orifice and insulation coating at external wall is obtained to improve the flow field uniformity at the front gap and enhance the electrolyte flow at the leading edge and trailing edge. Moreover, experiments were carried out, and results of the experiment show that the stability, efficiency, and surface quality of electrochemical trepanning are improved greatly by using the optimized cathode.