Abstract
In this study, effect of machining process parameters viz pulse-on time, pulse-off time, current and servo-voltage for machining High Carbon High Chromium Steel (HCHCr) using copper electrode in wire EDM was investigated. High Carbon High Chromium steels have low machinability comparing to other steels and so wire EDM machin-ability was investigated in this work. Experiments were conducted according to Taguchi's technique by varying the machining process parameters at three levels. This statistical technique helps in reducing cost and time by limiting the number of experiments. Interested output parameters are Material Removal Rate, Surface Roughness and Vickers Hardness. Grey Relational Analysis was performed to find out optimized set of input parameters for achieving better output responses. It was observed that parameters of experiment 1 are highly influencing for obtaining optimized output responses.
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