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Electrochemical machining with independent electrolyte supply at blade leading/trailing edge

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Abstract

The blade is a key component of aero engines. In traditional blade electrochemical machining (ECM) processes, the electrolyte is simultaneously supplied to the concave and convex parts. To improve flow field uniformity at marginal areas of the blade, a new blade flow mode with an independent electrolyte supply at the leading and trailing edges is proposed here. Flow field simulations of the entire blade ECM process are carried out. The results show that in comparison with conventional flow field modes, electrolyte distribution in this new flow field mode is more uniform and the change in velocity is smaller along the flow path. In addition, the size and pressure of the liquid inlets at the leading and trailing edges were optimized, with optimal height and pressure values of 3 mm and 0.9 MPa determined, respectively. The results of experimental investigations proved that the new flow mode proposed here was reasonable, and the surface roughness and contour accuracy of the leading and trailing edges were significantly enhanced.

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Funding

This study was co-supported by the National Natural Science Foundation of China (No. 91860135), National Natural Science Foundation of China for Creative Research Groups (Grant No. 51921003), and the Postgraduate Research and Practice Innovation Program of Jiangsu Province (KYCX19_0164).

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Authors and Affiliations

  1. National Key Laboratory of Science and Technology on Helicopter Transmission, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, People’s Republic of China

    Jianwei Guo, Dong Zhu & Yujun Yang

Authors
  1. Jianwei Guo
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  2. Dong Zhu
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  3. Yujun Yang
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Contributions

Conceptualization:·Dong Zhu; data curation: Jianwei Guo, and Yujun Yang; formal analysis: Jianwei Guo and Yujun Yang; funding acquisition: Dong Zhu and Jianwei Guo; methodology: Dong Zhu and Jianwei Guo; project administration: Dong Zhu and Jianwei Guo; resources: Yujun Yang; simulation: Jianwei Guo and Yujun Yang; supervision: Dong Zhu and Jianwei Guo; experimental: Jianwei Guo and Yujun Yang; writing—original draft preparation: Jianwei Guo; writing—review and editing: Dong Zhu and Jianwei Guo

Corresponding author

Correspondence to Dong Zhu.

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Guo, J., Zhu, D. & Yang, Y. Electrochemical machining with independent electrolyte supply at blade leading/trailing edge. Int J Adv Manuf Technol 114, 1119–1129 (2021). https://doi.org/10.1007/s00170-021-06917-7

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  • DOI: https://doi.org/10.1007/s00170-021-06917-7

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