Parameter optimization during minimum quantity lubrication turning of Inconel 625 alloy with CUO, Al2O3 and CNT Nanoparticles dispersed vegetable-oil-based cutting fluid 2019-28-0061
Inconel 625, nickel based alloy, is found in gas turbine blades, seals, rings, shafts, and turbine disks. Application of Minimum Quantity Lubrication (MQL) in turning process provides as an advanced and green machining concept. The addition of nanoparticle of weight percentage parameters along with machining parameters has a significant influence on the machining characteristics and so, parameter optimization is vital role to obtain the best machining performance. In this study, MQL with CUO, Al2O3 and CNT nanoparticles dispersed vegetable-oil-based cutting fluid is prepared in turning of Inconel 625. The nanofluids are prepared by dispersing 0.1, 0.25, and 0.5 wt% into vegetable oil-based nanofluids to improve the machining characteristics of the Inconel 625. Then Taguchi-Desirability analysis optimization method is used to evaluate the effect of MQL+ machining parameters on the turning characteristic and determine the optimal conditions combination. Results reveals that both surface roughness, Ra and tool wear Vba found to lower value at the optimized cutting parameters of 0.5 (wt%) concentration, velocity 40 m/min and feed rate 0.14 mm/rev and in this case, it is occurring for CNT coolant. The improvement are about 18% and 8.46^% for the Ra and Vba. In the summary, the appropriate chosen of nanomaterial can enhance the cooling and lubrication properties of base oil and improve the performance values. The results of the present investigation provide an experimental basis for the appropriate application of nanomaterial in turning of Inconel 625 by MQL.