SELECTION OF MACHINING PARAMETERS BASED ON THE ANALYSIS OF SURFACE ROUGHNESS AND FLANK WEAR IN FINISH TURNING AND FACING OF INCONEL 718 USING TAGUCHI TECHNIQUE

Inconel 718 is widely used in aerospace industries because of their ability to withstand excessiveloads even at elevated temperature. This property makes it, one of the most difficult to machining the material with inferior surface quality and rapid tool wear. Cutting experiments were conducted as per the full factorial design under dry cutting conditions. The effects of the machining parameters on the performance measures surface roughness and flank wear were investigated. The relationship between the machining parameters and the performance measures were established using the non-linear regression analysis. Taguchi’s optimization analysis indicates that the factors level, its significance to influence the surface roughness and flank wear for the tuning and facing processes. Confirmation tests were conducted at an optimal condition to make a comparison between the experimental results foreseen from the mentioned correlations.