Tribological characteristics and drilling performance of nano-MoS2-enhanced vegetable oil-based cutting fluid using eco-friendly MQL technique in drilling of AISI 321 stainless steel

The implementation of sustainable manufacturing techniques to make machining operations more eco-friendly is a demanding issue that has gained attention from academic and industrial sectors. In some operations, large quantity fluids wasted easier, especially during the difficult-to-machine materials such as stainless steel. circumstances, many researchers are investigating techniques. Therefore, in this study, effects minimum lubrication (MQL) with MoS2-enhanced vegetable-oil-based cutting fluid on drilling characteristics AISI 321 steel investigated. main aim study analyse performance various coolant–lubricant strategies, namely dry, flood, pure MQL, three nanofluid MQL (NFMQL) regard thrust force torque, surface roughness, friction coefficient, chip morphology tool wear mechanism (AISI 321). Research findings indicated NFMQL conditions have given excellent by improving than dry flood drilling. Among conditions, 1.5 wt.% nano-MoS2 sunflower oil-based condition provided better cooling–lubrication effect improved followed 1.0 0.5 conditions. had resulted 43.2%, 68.9%, 56.8% 41.6% reduced values force, roughness COF, respectively, at 30th hole comparison Moreover, noticeable improvement rate been achieved while under environments. may be attributed fact nanoparticles (MoS2) oil offer features provide strength film tool–workpiece interface. addition, particles high activity easily adsorbed onto contacting surfaces, thereby maintaining effect.