TAGUCHI METHOD FOR OPTIMIZING TOOL WEAR RATE AND OVERCUT IN ELECTRO DISCHARGE MACHINING

In this study, machinability of Caldie cold work tool steel on EDM machine was experimentally investigated by using Cu-Cr-Zr electrode for tool wear rate (TWR) and overcut. In the experiment tests, discharge current, pulse duration and duty cycle were used as processing parameters. Machinability levels were determined for the lowest TWR and overcut. The effect of level parameters on TWR and overcut were calculated with the help of ANOVA. Experimental results are interpreted with using three-dimensional graphics. While the optimum machining test condition for electrode wear rate was A1B1C1, the optimum machining level for overcut was determined as A1B1C2. As a result of ANOVA analysis, it was calculated that discharge current was the most powerful parameter on TWR and overcut.