Machinability Assessment of Hybrid Nano Cutting Oil for Minimum Quantity Lubrication (MQL) in Hard Turning of 90CrSi Steel

Friction and very high temperature are still the major challenges in hard machining technology they greatly affect cutting efficiency. The application of MQL (minimum quantity lubrication) method, using nanoparticles order to improve cooling lubrication performance base oil, has proven be a promising solution. Hence, this work aimed investigate effectiveness Al2O3/MoS2 hybrid nanofluid Al2O3 MoS2 mono nanofluids turning 90CrSi steel (60–62 HRC) under an environment. Box-Behnken experimental design was used for three input variables, including nanoparticle concentration, air pressure, flow rate. Their influences on surface roughness forces were studied. According obtained results, it shown that nano oils contributes achieving better than use nanofluids. In particular, lower is reported values Ra, back force Fp, Fc smaller more stable those due improvement characteristics. Thus, provides novel approach study machining.