Comparison of Material Removal Rate of Aluminium Alloy AA6082 Using Novel AlTiN Coated Tool with Uncoated Carbide Tool while CNC Turning

Abstract

AlTiN (Aluminium Titanium Nitrate) novel tool coating and using Uncoated carbide tool. Materials and Methods: Workpiece materials used in this study for Turning operation is Aluminium alloy AA6082. Tools used are AlTiN coated tool and uncoated Carbide tool. There are two groups i.e, control group and experimental group, each group contains 20 workpieces and total workpieces are 40. The pre-test power for testing was 80%, Alpha=0.05% and CL was 95%, G power test was used to fix the number of samples for each group.
Results: The level of cutting parameters and the resulting Material Removal Rate values are obtained for all machined workpieces with both Uncoated carbide tool and AlTiN coated tool and the results done by Turning operation. The mean Material Removal rate values using Uncoated Carbide tool is 0.16110g/s and AlTiN coated tool is 0.19745g/s and corresponding standard deviation values are 0.021472 and 0.039752 respectively. These values were obtained with a significance level of p=0.047 (p<0.05). Using AlTiN coated tool gives a higher Material Removal Rate than Uncoated carbide tool in CNC machining. Conclusion: Within the limitations of this study, by the observation of results obtained it could be concluded that the material removal rate of Aluminium Alloy AA6082 using AlTiN coated tool is more than Uncoated carbide tool.