E3S Web Conf.
Volume 191, 20202020 The 3rd International Conference on Renewable Energy and Environment Engineering (REEE 2020)
|Number of page(s)||5|
|Section||Modern Electronic Technology and Application|
|Published online||24 September 2020|
Effect of machining polarity on single discharge characteristics in micro-EDM
School of Mechanical, Electrical & Information Engineering, Shandong University, Weihai, Shandong, 264209, China
* Corresponding author: firstname.lastname@example.org
In micro electrical discharge machining (micro-EDM), polarity effect is attributed to the difference in energy distribution into the anode and cathode. Understanding the effect of machining polarity on energy distribution bears significance in predicting and controlling machining performances. Single discharge experiments were conducted in this study, to explore single discharge characteristics. The plasma radius and energy distribution were calculated by combining the crater size and the electro-thermal model. The results show that the influence of discharge current on crater depth-to-diameter ratio (H/D) is not significant with positive polarity. The plasma radius, fraction of energy transferred to workpiece, and crater size are greater for micro-EDM with negative polarity than positive polarity.
© The Authors, published by EDP Sciences, 2020
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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