Title: Performance studies of Wire Electro Discharge Machining (WEDM) of Inconel 718

Authors: R. Ramakrishnan, L. Karunamoorthy

Addresses: Department of Mechanical Engineering, Panimalar Engineering College, Chennai, 602 103, India. ' Department of Mechanical Engineering, Anna University, Chennai, 600 025, India

Abstract: This paper describes the development of mathematical models and multi response optimisation to predict and select the best cutting parameters for Wire Electro Discharge Machining (WEDM) process. Inconel 718 was selected as work material for experimentation. A brass wire of 0.25 mm diameter was applied as a tool electrode to cut the specimen. The responses were optimised concurrently using Multi Response Signal to Noise (MRSN) ratio. ANOVA was employed to identify the level of importance of the machining parameters. Finally, experimental confirmations were carried out to identify the effectiveness of this proposed method.

Keywords: WEDM; wire EDM; electro-discharge machining; MRSN; mathematical modelling; multi-response optimisation; cutting parameters; signal to noise ratio; SNR; surface roughness; ANOVA; Inconel 718; electrical discharge machining.

DOI: 10.1504/IJMPT.2009.025227

International Journal of Materials and Product Technology, 2009 Vol.35 No.1/2, pp.199 - 215

Published online: 16 May 2009 *

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