Investigation on influence of cutting forces in evaluating performance in machining of 7075 aluminium alloy with cryogenic liquid nitrogen as a coolant

This paper dealt with experimental investigations on cutting forces in machining of 7075 aluminium alloy,
using Cryogenic Liquid Nitrogen (LN2) as a coolant.. The surface roughness values were taken in machining 7075 Al
alloy with cryogenic LN2 and conventional coolant for comparison. The use of the Cryogenic Liquid Nitrogen reduced
the cutting force by 10 to 20%. The reduction of feed force and radial force is in the range of about 15-30% and 15
31% respectively, compared to conventional coolant machining conditions. The surface finish is increased in Cryogenic
machining conditions about 15 to 23% compared to conventional coolant machining conditions.