OPTIMIZATION OF MILLING PARAMETERS ON ALUMINIUM HYBRID METAL MATRIX COMPOSITE USING TAGUCHI METHOD

ABSTRACT Metal Matrix Composites are widely used in aerospace, automobile, structural, marine industries because of good corrosive resistance and better strength to weight ratio. In this paper an attempt has been made to optimize the milling machine process parameters of hybrid Aluminium Metal Matrix Composite prepared by stir casting method. In this process pure Aluminium is metal matrix and hybriding with Silicon carbide and Tungsten Carbide. The microstructure of hybrid matrix is associated with scanning electron microscope. Scanning electron microscope analysis conforms the distribution of Silicon carbide, Tungsten Carbide in Aluminium matrix. To optimize the process parameters such as cutting speed, feed, depth of cut of Aluminium hybrid Metal Matrix Composite in CNC milling by using Taguchi method. L27 orthogonal layout used for experimental work and Taguchi method employed for optimization to get best material removal rate and good surface finish. Analysis of variance is used to find out the contribution of process parameters on responses. Keywords: Stir casting method, Taguchi method, Surface roughness, Material removal rate, ANOVA