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Investigation of Process Parameters DURING HARD TURNING OF AISI H11 Hardened steel


Hrushikesh Prayagdas Deshmukh , Government college of Engineering Aurangabad; Umesh Vishnu Hambire, Government College of Engineering Aurangabad


H11, CNC Lathe, Surface Roughness, Tool tip temperature, Taguchi, Design of Experiments, Grey Relational Analysis


In this study, the effects of cutting speed, feed rate, work piece hardness and depth of cut on surface roughness and tool tip temperature in the hard turning were experimentally investigated. AISI H11 (X38CrMoV5-1) steel was hardened to (40; 45 and 50) HRC, machined using cubic boron nitride (CBN 7025 from Sandvik Company) which is essentially made of 60% CBN. L27 orthogonal array based Taguchi optimization technique is used to optimize the effect of various cutting parameter for surface roughness and tool tip temperature of H11 work material in turning operation. An orthogonal array, signal to noise (S/N) ratio and analysis of variance (ANOVA) are to be employed to analyze the effects and contributions of cutting parameter on the response variables. Attempt was further made to simultaneously optimize the machining parameters using Grey relational analysis. The feed rate is the most significant factor for minimize both surface roughness and tool tip temperature. The surface roughness was measured using surface roughness tester (Mitutoyo surftest-SJ210). Tool tip temperature was measured using Optex Thermo Hunter.

Other Details

Paper ID: IJSRDV3I80133
Published in: Volume : 3, Issue : 8
Publication Date: 01/11/2015
Page(s): 198-204

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