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To improve the quality of the product produced considering productivity, it is important to evaluate the factors affecting the machining experimentally and analytically. Looking at the harmful effects of conventional cutting fluid on the environment and workers’ health, in the current research work effort has been made to explore the effectiveness of minimum quantity lubrication (MQL) and solid lubricant in machining. Micron-sized calcium fluoride (CaF 2 ) solid lubricant powder particles are mixed in SAE 40 cutting oil and applied to the machining area with minimum quantity lubrication. The effect of different particle sizes and wt% of CaF 2  has been analysed by measuring surface roughness, chip-tool interface temperature, flank wear of the tool, and cutting forces. Results demonstrated that the smaller size and 20 wt% of CaF 2  powder have improved the process performance by lowering surface roughness and tool wear. The effectiveness of solid lubricant can be viewed as an alternative compared to wet machining. The results can be used by related industries to improve machining performance with the use of MQL and solid lubricants leading towards clean and sustainable manufacturing.

Improvement in machining process performance using solid lubricant assisted minimum quantity lubrication