Investigation of machining characterization of solar material on WEDM process through response surface methodology

Abstract The photovoltaic sector needs a high-throughput slicing method that produces minimal waste to meet rising demand. Wire electric discharge machining (WEDM) has emerged as an alternative in recent research efforts. Polycrystalline silicon is sliced using the WEDM process with zinc-coated electrode of Ø0.25 mm diameter. Experiments were planned and conducted according Box Behnken’s design experiments. As inputs, seven different parameters used: pulse on time (PONT), off (POFFT), peak current (PC), spark gap voltage (SGV), wire feed (WF), tension (WT), water pressure (WP). Response measured cutting speed (CS), surface roughness (SR), kerf width (KW). Various have also been analyzed ANOVA methods for predictive modeling. Based experimental data, this study determines appropriate optimal solutions via desirability functions. During process, PONT, POFFT, PC, SGV significantly influence energy surface. result study, CS 0.78 2 /min, SR 2.87 μm, KW 0.70 observed at settings PONT 119 μs, POFFT 42 PC 38A, 36V, WF 3 mm/min, WT kg WP 6 kg/cm . Surface morphology was determined scanning electron microscope Energy dispersive X-ray investigate characteristics.