Electric Discharge Machining of Aluminium Silicon-Carbide Composite and Optimization of Process Parameters

Harinesh.B1

Arunachalam.U2

Ommurugadhasan D3

Jenarthanan M.P1,Email

1School of Mechanical Engineering, SASTRA Deemed University, Thanjavur, Tamil Nadu 613401, India.

2Department of Mechanical Engineering, University College of Engineering, Nagercoil, Tamil Nadu 629004, India.

3St Anne's College of Engineering and Technology Ringgold Standard Institution, Anguchettypalayam, Tamil Nadu 607106, India.

 

Abstract

Aluminium metal matrix composites are hard to machine due to the bonding properties of the base and the reinforced ceramic materials. Electric discharge machining is one of the common and effective methods for machining such materials. The present work is to study the effect of pulse duration, peak current and the electrode gap on Metal Removal Rate (MRR), Tool Wear Ratio (TWR) and Radial Over Cut (ROC) on electric discharge machining of aluminium silicon carbide composites of various compositions 3%, 6% and 9%. The experiment was carried out using copper electrode of 3.4 mm diameter. Taguchi L9 orthogonal array was considered for analysing the results. Statistical models based on experiments are used for optimising the parameters for EDM for this experiment.