Effect of Input Parameters on Surface Roughness of Wire-Cut EDM of AISI EN 31 Tool Steel

Abstract

Wire-cut EDM is emerging machining process for machining hard to machine materials and intricate shapes which are impossible to make with conventional machining process. This paper analyses the effect of significant input process parameters of WEDM i.e., wire type, Pulse on, Pulse off, peak current on the output parameter surface roughness of AISI EN 31 tool steel. The other process parameters like wire tension, servo voltage, wire feed rate, spark gap voltage are kept constant. The Taguchi L18 orthogonal array is used to make a design of experiment. Two levels have been selected for wire type while all other three input parameters have been varied for three levels. AISI EN 31 tool steel is used as the work-piece material. The effect of all the selected input parameters on the output responses have been analyzed using ANOVA method. The result reveals that pulse on time and pulse off time are the most significant to influence surface roughness, followed by wire type. 

Cite this Article Nimratjot Singh, Khushdeep Goyal, Rakesh Bhatia. Effect of Input Parameters on Surface Rouhgness of Wire-Cut EDM of AISI EN 31 Tool Steel. Journal of Experimental & Applied Mechanics. 2016; 7(3): 45–51p.