1. A novel experimental investigation on material removal rate of Al-Si12CU using WCC coated and uncoated silicon nitride by CNC turning.
- Author
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Sumanth, K., Venkatesh, R., Thiruchelvam, V., Arunachalam, S. J., and Saravanan, R
- Subjects
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SILICON nitride , *MACHINING , *ERROR probability , *UNITS of time , *EXPERIMENTAL design - Abstract
Improving the material machining by improving various input conditions promotes the functional stability of the component with high reliability and claims goodwill to the concern. The primary objective of this research is to experimentally examine how much materials can be removed with the help of a CNC turning center with respect to unit time from the material of Aluminum alloy Al-Si12CU by selecting of suitable tool or tool coating. Silicon Insert is conventionally employed (Control group) and WCC-coating on it is proposed (experimental group). A cylindrical bar of Al-Si12CU alloy, with dimensions 50mm in diameter and 20mm long the workpiece. The Control group workpieces (the predicted number of sample machining on workpieces with 80% G power setting was 20 for each group) were machined under the same working conditions with uncoated Silicon nitride inserts whereas the experimental group samples were machined with WCC-coated silicon nitride inserts. The material removal rate (MRR) calculated for machining the Al-Si12CU alloy was according to ASTM standards. The observations of MRR were statistically tested, the average performance by the coated tool was 1.801 mm3/min whereas it was for the uncoated tool 1.624 mm3/min. The probability of error was 0.3% and it was less than 5%. The observations are acceptable, and the proposed tool has significantly high performance in terms of MRR. This suggests that the WCC-coated silicon nitride inserts outperform the uncoated ones in terms of MRR. The findings affirm the effectiveness of the experimental design and highlight the substantial variance between the two groups. In summary, this investigation demonstrates that using WCC-coated silicon nitride inserts leads to a higher MRR when turning Al-Si12CU alloy compared to uncoated silicon nitride inserts. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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