Abstract
Ti-6Al-4 V-ELI alloy is acknowledged for its biomedical use. In non-traditional machining method like Electrical Discharge Machining, the material removal is through electro-thermal action with no direct contact between tool and work-piece. The emanation of spring-back effect apart from adherence of alloy results with poor surface finish. The same is nullified with the current EDM method by using effect of electro-thermal energy applications thereby achieving close tolerance. The effect of input parameters such as Voltage (V), Current (I) and Pulse on-Time (Ton) on Material Removal Rate (MRR) and Surface Roughness (Ra) was investigated. The Ton was varied between (60&70)μs, voltage of (50&55) V and peak current of (10&12) A. The analysis of result was carried out with 23 factorial degree of experiment and the response contributing highest effect was noted. The MRR, Ra and electrode wear increase with each process parameters. It was found that factors like V, I and Ton have significant effect to varying degrees on MRR and Ra. MRR increased with increase in Ton while Ra increase with decreased in voltage.
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