Abstract
This paper focuses on the investigation of cutting parameter on Kerf width using wire electrical discharge machining (WEDM) of Inconel 718. The effect of three numerical parameters, namely the voltage gap, feed rate, and current are being studied in this experiment. Response surface methodology was selected as designs of experiment (DOE). ANOVA shows that feed rate significantly affects the size of Kerf width compared to other parameters. The optimization is done after the experiment has been validated by using the random parameter and optimized parameter. The error obtained when using random parameter is 5% and 4% for the optimized parameter. The best combination of optimized parameter of minimum Kerf width is fz=0.86 mm/min, V=41 V and I=7A in as to obtain a Kerf width of 325.12μm.
