| Issue |
MATEC Web Conf.
Volume 224, 2018
International Conference on Modern Trends in Manufacturing Technologies and Equipment (ICMTMTE 2018)
|
|
|---|---|---|
| Article Number | 01107 | |
| Number of page(s) | 7 | |
| Section | Manufacturing Technologies, Tools and Equipment | |
| DOI | https://doi.org/10.1051/matecconf/201822401107 | |
| Published online | 30 October 2018 | |
Effect of electrode polarity on fatigue life in EDM
Gazi University Technical Sciences Vocational School, 06374 Yenimahalle/Ankara, Turkey
* Corresponding author: ozerkan@gazi.edu.tr
In this study, high manganese steel specimens were machined with graphite electrode and various processing parameters by electro erosion method. It is a known fact that the craters generated by the EDM have a notch effect on the fatigue life. Therefore, Rz and Sm roughness parameters are calculated as the roughness maximum crater depth and width, respectively, and the theoretical fatigue life calculations are performed on the treated surfaces. In the processes, the tool polarization was also changed and the measured roughness values were higher in the positive polarity, so that the fatigue limit life was reduced in the calculations made with the area1/2 model. In EDM, when using a graphite electrode, in the case of reverse polarity machining, the surface roughness has an effect on increasing the fatigue life.
© The Authors, published by EDP Sciences, 2018
This is an open access article distributed under the terms of the Creative Commons Attribution License 4.0 (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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