Abstract

Nowadays, the minimum quantity lubrication method has become the eye apple of many manufacturing industries. MQL is a cooling procedure in which a very small volume of high quality refrigerant / lubricant is sprayed directly onto the work piece-tool interface. MQL machining has gained popularity over other cooling techniques due to its ability to produce superior surface quality, lower machining temperature, lower tool wear and lower coolant / lubricant consumption. Several researchers are continuing their work on new methods to strengthen the properties of coolants / lubricants. In this paper, efforts are being made to present important work by different researchers on the role of different coolant / lubricant in enhancing MQL environmental capability. A detailed overview of the functions of various processing fluids is presented in this text. such as vegetable oils, mineral oils, synthetic oils and nano-fluid-based machining fluids, in improving the machinability of MQL in spinning, milling and grinding operations. This paper also addresses the role of machining fluids in the enhancement of machining aspects such as surface strength, machining temp erature, tool wear and cutting insert life.

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