Optimization of Wire Cut Electrical Discharge Machining of Inconel 800 Using Grey Relational Analysis

Abstract

Wire Electrical Discharge Machining is one of the important non-traditional machining processes, which is used for machining difficult to machine materials and intricate profiles. In this present study, machining is done using Wire-Cut EDM and experimentation is planned according to Taguchi’s design of experiments [2]. Each experiment has been performed under different cutting conditions of gap voltage, pulse ON time, and pulse OFF time and Wire feed. Inconel 800 was selected as a work material and Brass wire of 0.25mm diameter as the tool to conduct the experiments. From experimental results, the surface roughness and Kerf Width was determined for each machining performance criteria. Grey Relational Analysis [1] is used for optimization of Surface Roughness and Kerf width.

Optimization of Cutting Parameters in Wirecut EDM of D2 Die Steel Using Gravitational Search Algorithm

“…Zinc coated wire of 0.25mm diameter is used as the tool to cut D2 die steel.This experimental design involves the selection of suitable levels for the machining parameters i.e. Pulse on Time, Pulse-off Time, wire feed, Gap voltage [1]. The selected L9 orthogonal array using the Taguchi's design of experiments for carrying out the Machining operation is tabulated in the table 1.…”

“…Due to the inherent properties of this process, easily machining the complex parts and precision components. Wire EDM works by creating an electrical discharge between the tool and the work piece [1]. As the spark jumps across the gap, material is removed from the work piece.…”