Articles | Volume 8, issue 2
https://doi.org/10.5194/ms-8-289-2017
https://doi.org/10.5194/ms-8-289-2017
Research article
 | 
20 Sep 2017
Research article |  | 20 Sep 2017

Comparative experimental investigation and gap flow simulation in electrical discharge drilling using new electrode geometry

Ali Tolga Bozdana and Nazar Kais Al-Karkhi

Related subject area

Subject: Machining and Manufacturing Processes | Techniques and Approaches: Experiment and Best Practice
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Cited articles

Bamberg, E. and Heamawatanachai, S.: Orbital electrode actuation to improve efficiency of drilling micro-holes by micro-EDM, J. Mater. Proc. Tech., 209, 1826–1834, 2009.
Bozdana, A. T. and Ulutas, T: The effectiveness of multi-channel electrodes on drilling blind holes on Inconel 718 by EDM process, Mater. Manuf. Process., 31, 504–513, 2016.
Dwivedi, A. P. and Choudhury, S. K.: Effect of tool rotation on MRR, TWR, and surface integrity of AISI-D3 steel using the rotary EDM process, Mater. Manuf. Process., 31, 1844–1852, 2016.
Fang, P. and Manglik, R. M.: The influence of inner cylinder rotation on laminar axial flows in eccentric annuli of drilling bore wells, Int. J. Transp. Phenom., 4, 257–274, 2002.
Hung, J. C., Lin, J. K., Yan, B. H., Liu, H. S., and Ho, P. H.: Using a helical micro-tool in micro-EDM combined with ultrasonic vibration for micro-hole machining, J. Micromech. Microeng., 16, 2705–2713, 2006.
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Short summary
This work investigates the effect of electrode geometry on flushing capability and debris removal efficiency in Electrical Discharge Drilling process. Drilling operations on stainless steel 304 were performed using circular and side-cut electrodes. Experimental results were compared with respect to drilling performance as well as dimensional accuracy and surface quality of drilled holes. Three-phase three-dimensional CFD models were also developed to analyze the flow field at interelectrode gap.