Lubrication effect of Cutting Fluids

a) The energy or power consumed in metal removal is reduced.

b) Abrasion or wear on the cutting tool is reduced there by increasing the life of the tool.

c) By virtue of lubrication, less heat is generated and the tool operates at a lower temperature there by also increasing its life.

d) Chips are helped out of the flutes of drill, taps, broaches etc.

An incidental improvement in the cutting operation is that the built-up edge will be reduced which in turn will decrease friction at the tool work piece area and contribute towards a cooler tool. It is therefore evident that a proper choice of lubricant is important to give the optimum cooling effect and lubrication condition in metal cutting.