Abstract
This research investigates on the optimum process parameters for machining of Inconel-625 alloy work piece with copper electrode on die sink electrical discharge machine. All the experiments are designed based on the Taguchi’s L9 orthogonal by varying pulse on time, flushing pressure and peak current in 3 levels to examine machining performance characteristics like material removal rate (MRR) and tool wear rate (TWR). Experimental data values are used for analysis by using Minitab. Utility method is used for optimization of response variables, for maximum material removal rate and minimum tool wear rate during machining of inconel 625 alloy. Response table is used to identify the most statistically significant process parameter for material removal rate of inconel 625 and tool wear rate of copper. The analysis of variance (ANOVA) is also performed to find out the percentage of contribution of each input parameter on overall performance characteristics
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