Optimization of Cutting Parameters in High Speed Turning by Grey Relational Analysis

Medium Carbon Steel AISI 1045 has a wide variety of applications in vehicle component parts & machine building industry. Surface roughness and Material Removal Rate are the main quality functions in high speed turning of medium carbon steel in dry conditions. In this study, the optimization of two response parameters (Surface roughness and Material Removal Rate) by three machining parameters (cutting speed, feed rate and depth of cut) is investigated in high speed turning of H13 in dry conditions. Taguchi’s L’9 orthogonal array and analysis of variance (ANOVA) are used for individual optimization. The simultaneous optimization is done by Grey Relational Analysis approach. The different levels of all machining parameters are used and experiments are done on HMT STALLION-100 HS CNC lathe machine. Material Removal Rate is investigated. The optimum condition for combined effects was found V2-F1-D3 and the optimal value of the surface roughness (Ra) comes out to be 1.007 (μm) and of MRR is 465.08 (mm3/sec). The optimum results are also verified with the help of confirmation experiments.