Applicability of CaF2 Solid Lubricant-Assisted Minimum Quantity Lubrication in Turning for Sustainable Manufacturing
The conventional cutting fluids have a significant share in the total production cost. It also causes environmental hazards and health damages if not managed properly. Minimization or elimination by some other by some efficient means is of current research focus. Through the experiments, this research work demonstrates the effectiveness and performance of solid lubricant-assisted minimum quantity lubrication in turning. Micron-sized calcium fluoride as solid lubricant is mixed with SAE 40 to prepare lubricant mixture. The output responses are analyzed by varying concentration of the solid lubricant in SAE 40 oil and the flow rate of the mixture. The output responses are measured in form of surface quality, chip-tool interface temperature, and tool flank wear. The comparative study of experimental results with dry, wet cooling, MQL, and MQSL has shown some motivating trends. Process performance is improved with the application of solid lubricant-assisted machining in form of the reduction in surface roughness, tool wear, and chip-tool interface temperature. From the results, the use of CaF2 as a solid lubricant with MQL can be considered as an environment-friendly and cost-effective alternative for lubrication. The results can be used for metal cutting industries, opening the possibilities of developing sustainable manufacturing practices.
KeywordsMQL Flank wear Chip-tool interface temperature Flow rate
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