In this paper, optimized value of cutting parameters(i.e. feed rate, cutting speed and depth of cut) and also the dominating parameter which affects the roughness of a surface produced during the turning process for mild steel are examined. Surface roughness is the quality characteristic; better surface finish affects the efficiency, performance, maintenance cost for any kinematic mechanism. So,surface roughness is very important quality characteristic. Mathematical tools taguchi method and ANNOVA (Analysis of variance) are employed to investigate the optimized value of cutting parameters for high grade of surface finish. Feed rate and cutting speed are identified as the most influential cutting parameters on surface roughness.
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