Cutting Fluid and Its Application with Different Delivering Machining Techniques

Cutting fluid is a major aspect of the machining process when machining metals with material adhesion challenges, as the fluid assists in the flushing of the chips from the cutting region and reduces the temperature generation and friction during the process. This chapter focuses on the cutting fluid and its application with various delivery mechanisms for machining. Because the quality of the cutting fluid applied at the cutting region is what drives the current trend in sustainable machining processes, the classifications of cutting fluid—straight machining oils, soluble oils, semi-synthetic cutting fluids, and synthetic fluids—are covered in this chapter. Also, the chapter analyzed the six various machining lubrication supply methods, including the solid lubrication process, flood cooling (a traditional process), cryogenic cooling, high pressure cooling, and compressed air vapour gas (CAVG) as coolant. The advantages and disadvantages of the lubricant delivery systems were carried out to further bring out the sustainability factors of the techniques in the manufacturing process. The findings show that the MQL is a sustainable and efficient process for machining, and the study recommended that the trend of producing a hybrid delivery system that can cryogenically MQL-deliver with high pressure continue.