A Novel Detection of surface roughness for AA 6063 using AlTiN coated HSS tool in comparison with Uncoated tool using surface roughness tester

Abstract

Aim: The motive of this study is to detect the surface roughness of AA 6063 samples using the AlTiN coated HSS drill and Uncoated drill machined in the (Super Jobber) Novel CNC drilling center. The surface roughness formed on the drilled surface was tested in a surface roughness tester. Materials and Methods: The AA 6063 with a diameter of 25 mm and length of 20 mm was used for this research. The experiments were conducted for two groups namely the samples are drilled using AlTiN coated HSS drill (intervention group) and the samples are drilled using an Uncoated drill (control group). The surface roughness test for machined samples was performed according to ASTM standards in the (SJ410-Mitutoyo) surface roughness tester. The sample count calculated by G-POWER software was 80% and a total of 20 samples per group was derived. Results: According to this study, the obtained Surface roughness for AA 6063 samples machined using AlTiN coated drill was 1.1336 μm and the samples machined using an Uncoated drill were 1.9502 μm. By considering the one-way ANOVA test in SPSS software, the significance value was p= 0.025 (p <0.050) indicating the tool efficiency while drilling. Conclusion: Within the limitations of this research, the samples drilled with AlTiN coated HSS drill has lower surface roughness than samples drilled with an Uncoated drill.