Influence of Cryogenic Cooling in Turning of AISI 1045 Steel with Modified Cutting Tool Inserts

摘要

The most emerging needs of modern metal cutting operation are increase material removal rate, good work surface finish and low tool wear. These objectives can be achieved by reducing cutting temperature in the cutting zone using proper cooling system. Current work involved experimental study of the effect of liquid nitrogen was applied through a holes made in the cutting tool insert during turning of AISI 1045 steel. The effects of cryogenic cooling by liquid nitrogen on cutting temperature, cutting force, surface roughness and tool wear have been compared with conventional machining. It has been observed that in cryogenic cooling method, the cutting temperature was reduced to 47 - 58% and the cutting force was decreased by 15 - 27% over wet machining. Cryogenic cooling using liquid nitrogen reduced the flank wear to a maximum of 37% over wet machining. The experimental results of the present work indicate substantial benefit of cutting force, surface roughness and tool wear through reduction in cutting zone temperature.