Comparative Study of Machining Parameters on Electrical Discharge Machining of Inconel 718 using Copper and Copper- Tungsten Electrode.
Abstract
The present scenario in all the manufacturing industries is to make a priority list to cope up the challenges imposed by the superior materials like alloys, ceramics and composite materials which have difficulty for machining. In this study, comparison of experimental results which is found by optimization of machining parameters on material removal and tool wear rate along with two different electrodes material such as copper and copper tungsten for same design of experiment in machining of Inconel 718 is performed using ZNC spark erosion machine. Four machining parameters such as current, pulse duration, pulse interval and gap voltage are considered for experimental study. Taguchi optimization approach is considered for design of experiment. In this study, material removal rate is more when Copper tungsten electrode is used but in case of tool wear rate, Copper electrode has more tool wear as compared to Copper tungsten electrode. Keywords: ANOVA, MRR, TWR, Taguchi approach, ZNC EDM,References
Mohd Amri Lajis, H. C. D. Mohd Radzi, and A. K. M. Nurul Amin, The Implementation of Taguchi Method on EDM Process of Tungsten Carbide, European Journal of Scientific Research, 26(4), 2009, 609-617.
Lili, Y. S wong, J. Y. H Fuh, Lilu, Effect of TiC in copper–tungsten electrodes on EDM performance, Journal of Materials Processing Technology, 113( 1–3), 2001, 563-567.
T. Rajmohan, R. Prabhu, G. Subba Rao, and K. Palanikumar, Optimization of Machining Parameters in Electrical Discharge Machining (EDM) of (304) stainless steel, Procedia Engineering, 38, 2012, 1030-1036.
Anshuman Kumar, Himadri Majumder, K. Vivekananda, and K. P. Maity, NSGA-II Approach for Multi- Objective Optimization of Wire Electrical Discharge Machining Process Parameter on Inconel 718, Materialstoday proceedings, 4(2), 2017, 2194-2202.
Shih-Fu Ou, and Cong-Yu Wang, Effects of bioceramic particles in dielectric of powder-mixed electrical discharge machining on machining and surface characteristics of titanium alloys, Journal of Materials Processing Technology, 245, 2017, 70-79.
