Abstract
AbstractMetal cutting industries are facing challenges to increase production rate at minimum cost with improvement in quality in the final product. The increasing need of productivity, closed tolerance, dimensional stability and cost put tremendous pressure on manufacturing industries to design and develop new technologies to meet the required goal. Hence, coating over the existing tool plays an important role in achieving higher production rate, better tool life and minimization in cost. In this paper, we analyzed the effect of uncoated and coated carbide (triple and six layer coated) tool on tool life, surface roughness and material removal rate during dry turning of EN27 steel. Taguchi approach is used to find the best optimum parameter setting for turning of EN27 steel. A L9 orthogonal array, signal-to-noise ratio and ANOVA are applied to study machining parameters (Spindle speed, Feed rate and Depth of cut) in consideration of tool life (VB), material removal rate (MRR) and surface finish (Ra). The experimental investigation shows that the best machining performance is achieved by six layer coated carbide insert compared to uncoated and triple coated carbide insert under the selected machining conditions.
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