In this study, the critical effects and its dependency of cutting environment and machining parameters during slot milling operation on Nimonic 263 alloy have been investigated. Because, the variations in the cutting environment [Dry, Wet and Minimum Quantity Lubrication (MQL)] and machining parameters (cutting speed and feed) have superior effect on the machining behavior which lead to cause fluctuations in surface morphology and surface roughness of machined samples. Additionally, the mathematical relationship in empirical form is established as a function of machining parameters under various cutting environments, to achieve better surface integrity with minimal cutting force and power consumption. Furthermore, the ANOVA analysis has been carried out to measure the goodness of fit and to predict the superior and dominant parameter which influences the cutting force and surface roughness. Through the above analyses, it is confirmed that the MQL cutting environment has a dominant effect on the cutting force and surface roughness followed the machining parameters.
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