An Experimental Evaluation of SiO2 Nano Cutting Fluids in CNC Milling of Aluminium Alloy AL6061-T6
The present study explores the efficiency of SiO2 nano cutting fluid in machining AL6061-T6 Aluminium Alloy using CNC Milling. The cutting performance, namely surface roughness and cutting temperature, were investigated against feed rate and spindle speed. The cutting performances of SiO2 nano cutting fluid were then compared to the conventional CNC cutting fluid. Beforehand, the suspended form of SiO2 is dispersed in CNC cutting fluid base. The nanofluid is prepared in three-volume concentrations (0.5, 1.0 and 1.5%) by using one-step and dilution methods. The stability of SiO2 Nano cutting fluid is observed via visual sedimentation. The result shows that SiO2 nano cutting fluid with 1.5% volume concentration produces the lowest surface roughness of 0.679µm and lowest cutting temperature of 29.30C. It can be concluded that the higher the SiO2 nanofluid volume concentration, the better the surface roughness quality and lowering the cutting temperature. Finally, viscosity test onto the SiO2 nano cutting fluid is recommended in future work in order to determine maximum volume concentrations allowed to be used in CNC milling machine.