Published Paper Details:

Electrical Discharge Machining is a thermo-electric non-traditional machining process in which material removal takes place through the process of controlled spark generation between a pair of electrodes which are submerged in a dielectric medium. It is recognized as an efficient method of producing dies and machining of hard material such as ceramics and high strength metal matrix composites for the modern metal industry. In this investigation, response Surface methodology is used to investigate the effect of four controllable input variables namely: discharge current, pulse off time, pulse on time and gap voltage on material removal rate. In the present work, the experiments were conducted using response surface methodology, to ascertain the effect of EDM process parameters on material removal rate (MRR) of cast iron by using tool material Copper. The significant coefficients are obtained by performing analysis of variance (ANOVA). It is found that discharge current and pulse duration are significant factors. Surface methodology is a precision methodology that needs only 27 experiment to assess the condition.