Abstract— Micro EDM using solid tool has been extensively used for micromachining of materials like EN-8 steel, composite material, Incoloy etc. This paper presents optimization of Material Removal Rate (MRR) using Rotary electrode attachment. The experiments study was conducted for varying machining parameter like Polarity, Peak current, Rotational speed of Electrode and Pulse on time using Taguchi methodology to investigate the machining characteristics of Hastelloy c 276 with 0.5 mm Graphite rod as Electrode. Significant machining parameter for MRR were identified by using signal to noise ratio and ANOVA,The results of the Experiment state that Polarity is more influshing Parameter than Peak current, Rotational speed of Electrode and Pulse on time for material removal rate.

Index Terms— Micro EDM, S/N ratio, ANOVA

Cite: Swaraj Darji and Bindu Pillai, " Estimation of MRR for Micro-EDM Machining of HASTELLOY C 276 using Taguchi Methodology," International Journal of Mechanical Engineering and Robotics Research, Vol. 1, No. 2, pp. 261-267, July 2012.