LAUSR

ABSTRACT The research work was carried out on the end milling of Al 6082-T6 alloy with cryogenic CO2, LN2 and wet conditions. The highest axial force (Fz), normal force (Fy) and feed force (Fx) values were recorded on cryogenic LN2 machining. Use of cryogenic LN2 helped to reduce the cutting temperatures up to 38.29% and 32.8% when compared with wet and cryogenic CO2 conditions, respectively. The conventional fluid coolant offered a better surface roughness value (Ra) over cryogenic coolants at a feed rate of 0.015 and 0.02 mm/tooth and cutting speed of 100 m/min. The workpiece surface quality degraded in cryogenic machining conditions during the slot end milling operation of aluminum alloy under the given machining parameters.