Abstract
Electrochemical machining (ECM) using tube electrodes is an effective approach for the rough machining of turbo engine blisks. The uniformity of the channel allowance decisively influences the accuracy of subsequent ECM precision for the blisk. A voltage regulation strategy to minimize allowance differences in the ECM is proposed. Simulation and experimental investigations are performed to determine the relationships between the channel width and the applied voltage. Comparative experiments using the conventional constant voltage method and the proposed voltage regulation method are performed. The experimental results show that the allowance differences on the back and basin surfaces of the blade are reduced by 47.81% and 51.57%, respectively, using the proposed method. Thus, the experimental results verify that the voltage regulation strategy is effective for the ECM of blisk channels.
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This study was supported by the Joint Funds of the Natural Science Foundation of China and Guangdong Province (Grant U1601201) and the National Science and Technology Major Project (Grant 2017-VII-0004-0097).
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Yawei Zong conceived of the study, designed the study, and collected the data. All authors analyzed the data and were involved in writing the manuscript.
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Zong, Y., Liu, J. & Zhu, D. Study of voltage regulation strategy in electrochemical machining of blisk channels using tube electrodes. Int J Adv Manuf Technol 114, 3489–3501 (2021). https://doi.org/10.1007/s00170-021-07065-8
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DOI: https://doi.org/10.1007/s00170-021-07065-8