Moving chip

cutting tool

Work material

machine tool

very high speed

large uncut chip thickness

use of cutting fluid

increase in positive rake angle

cutting fluid does not penetrate

chip tool interface temp is maximum

normal stress on rake face is maximum

tool strength is minimu8m

removes the heat faster from the cutting zone,

forms a coating on the cutting tool by chemical reaction

forms a low shear strength film of work material at the tool chip interface

serves as a dielectric minimizing thereby reactions due to $$EMF$$ at the interface