ABSTRACT
Environment-conscious machining and sustainable manufacturing are the buzzwords in recent times in the machining sector. The increased demand for machining various materials has led to the development of advanced techniques for manufacturing. However, the eco-friendliness of such processes is yet to be studied. In addition to this, the cooling and lubrication strategies were also developed and are being improved consistently.
One of the emerging and still developing techniques is minimum quantity lubrication (MQL). The performance of machining is evaluated with surface integrity as one of the key evaluators. The research proved qualitative and improved machining with the implementation of MQL. However, further research is being carried out on the type of lubricant, i.e, solid lubricants, vegetable oils, and micro- and nano-fluids. The performances are evaluated not only in terms of machining responses but also from the point of heat transfer. The use of additives for enhancing the base lubricant properties like heat transfer capability are also studied. This chapter provides a state-of-the-art study on such developments in MQL covering micro- and nano-fluids, along with different additives.
