Experimental research on machining localization and surface quality in micro electrochemical milling of nickel-based superalloy

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Abstract

Micro electrochemical machining is becoming increasingly important in the microfabrication of metal parts. In this paper, the machining characteristics of micro electrochemical milling with nanosecond pulse were studied. Firstly, a mathematical model for the localization control of micro electrochemical milling with nanosecond pulse was established. Secondly, groups of experiments were conducted on nickel-based superalloy and the effects of parameters such as applied voltage, pulse on time, pulse period, electrolyte concentration and electrode diameter on machining localization and surface roughness were analyzed. Finally, by using the optimized machining parameters, some 2D complex shapes and 3D square cavity structures with good shape precision and good surface quality were successfully obtained. It was proved that the micro electrochemical milling with nanosecond pulse technique is an effective machining method to fabricate metal microstructures.

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Liu, Y., Jiang, Y., Guo, C., Deng, S., & Kong, H. (2018). Experimental research on machining localization and surface quality in micro electrochemical milling of nickel-based superalloy. Micromachines, 9(8). https://doi.org/10.3390/mi9080402

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