Material removal rate comparison of aluminium alloy AA7075 machined using HSS M42 tool and novel chromium nitride coated tool in CNC drilling.

The objective of this research is to assess the removal rate of material in comparison to the removal rate of material in machining aluminum alloy AA7075 using high steel HSS M42 tools and coated tools of Chromium. The experiment was conducted for two different groups, Group 1 (HSS M42) and Group 2 (chromium nitride coated tools). The volume of the sample material is 20 mm in diameter and 15 mm in thickness. The alloy of aluminum AA7075 had the material composition used to cut. The material removal rate was compared with two different tools in regards to necessity and the readings obtained are documented. The statistical significance of the differences was determined using the SPSS statistical software. It was deduced from the outcomes that the removal rate of High speed steel HSS M42 and the novel tool coating with a chromium nitride coating on the tool are both calculated from the test data and compared. The value of significance obtained from the statistical analysis was 0.041, which is less than 0.05, thus the difference in significance was observed between the two groups. Within the range, it was observed that the material removal rate of the new tool's coating with CrN was superior to the High speed steel M42 tool. [ABSTRACT FROM AUTHOR]