Nano-enhanced biolubricant in sustainable manufacturing: From processability to mechanisms

Abstract To eliminate the negative effect of traditional metal-working fluids and achieve sustainable manufacturing, usage nano-enhanced biolubricant (NEBL) is widely researched in minimum quantify lubrication (MQL) machining. It’s improved tool wear surface integrity have been preliminarily verified by experimental studies. The previous review papers also concluded major influencing factors processability including nano-enhancer lubricant types, NEBL concentration, micro droplet size, so on. Nevertheless, complex action NEBL, from preparation, atomization, infiltration to heat transfer anti-friction, indistinct which limits preparation process specifications popularity factories. Especially machining process, in-depth understanding difficult meaningful. fill this gap, paper concentrates on comprehensive quantitative assessment based tribological, thermal, machined quality aspects for application turning, milling, grinding. Then it attempts answer mechanisms systematically considering multi-factor influence molecular structure, physicochemical properties, dispersion. Firstly, reveals advanced comparison with biolubricant-based MQL Secondly, distinctive filmformation, as distinguished fluid, are clarified combining its unique structure physical properties. Furtherly, optimization strategy synergistic relationship analysis among variables, mechanisms, performance NEBL. Finally, future development directions put forward aiming at current limitations requires improvement jet methods respects. This will help scientists deeply understand effective mechanism, formulate specifications, find trend technology.