Abstract
The effects of CNC end-milling process parameters on the machinability of Mg-alloy are discussed in the present investigation. The optimization of the process parameters namely cutting speed, feed rate and depth of cut has been carried out for material removal rate (MRR) and thermal stresses (TS) using Taguchi design of experiment and TOPSIS approach. The milling parameters have shown significant role towards the machining attributes. Analysis of variance (ANOVA) used to evaluate and analyse the relative importance of milling process parameters. For single response optimization, the most significant factor for MRR was feed rate and for thermal stress TS, it was cutting speed. However, feed rate has the greatest impact on preference value (PI), accounting for 71.85% of contribution to multi-response optimization. The recommended milling process parameters have determined to be optimum at cutting speed: 1200 RPM, feed rate: 100 mm/min and depth of cut: 1.25 mm by using the multi-response optimization technique.
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