TEMPERATURE DISTRIBUTION IN CENTRIFUGAL CASTING WITH PARTIAL SOLIDIFICATION DURING POURING

Year 2019, Volume: 2 Issue: 2, 39 - 45, 31.12.2019

İredia Erhunmwun , C. E. Etın-osa

Abstract

Abstract

In this paper, we
have provided the mathematical modelling of the conductive heat transfer in
horizontal centrifugal casting which was then used to analyze the temperature
distribution in centrifugal casting. The Finite Element Method (FEM) as a
numerical tool was used to discretize and analyze the temperature distribution.
The result obtained shows the temperature distribution both in the liquid cast
region and the mould region. The pouring temperature of the liquid cast into
the prepared mould was 1500⁰C and
also to prevent thermal shock, the mould was preheated to a temperature of 250⁰C. After about 50 secs
when the liquid cast has been poured into the mould, the result obtained shows
a decrease in temperature from 1407.3477 ⁰C
at a distance of 4.5cm to 1323.0772⁰C at a distance of 6.5cm from the centre
of the mould which is the interface between the liquid cast and the mould. Also
in the mould region, after about 50 secs, the temperature drops from 755.8252⁰C
at 6.5cm to 350.6205⁰C at 15.5cm from the centre
of the mould. The maximum percentage error was 0.81996% and the minimum percentage error was 0.0000%. This comparison was made for the temperature distribution
in the cast region and the mold region after about 50 secs when the molten metal has been poured into the mold cavity.
This shows that the result obtained from this research is in agreement with the
result obtained from Exact Differential Equation Method (EDEM).

Keywords

Centrifugal Casting, Finite Element Method, Heat Transfer, Discretization, Partial Solidification

References

• [1] Nastac, L; Valencia, JJ.; Xu, J.; Dong, H. A Computer Model for Simulation of Multi-Scale Phenomena in the Centrifugal Casting of Metal-Matrix-Composites, TMS, Symposium on Materials Processing in the Computer Age III, Nashville, TN, 2000.
• [2] Hao, H; Huang, X.; Nastac, L.; Sundarraj, S.; Simkovich, A. Modeling of Centrifugally-Cast TiC/Bronze Metal Matrix Composites, Proceedings of the Modelling of Casting, Welding and Advanced Solidification Processes VIII, The Minerals, Metals & Materials Society 1998, 1015-1022.
• [3] Lewis III, D.; Singh, M.; in In Situ Composites: Science and Technology, Singh, M.; Lewis, D., editors, (The Minerals, Metals and Materials Society, Warrendale, 1994, 21.
• [4] Lajoye, L.; Suery, M.: Proceedings of the International Symposium on Advances in Cast Reinforced Metal Composites, edited by Fishman, SG.; Dhingra, AK. ASM International, Materials Park, OH, 1988, 15.
• [5] Esaka, H., Kawai, K., Kaneko, H. and Shinozuka K.: In-Situ Observation of Horizontal Centrifugal Casting using a High-Speed Camera. IOP Conference Series: Materials Science and Engineering, 2012, 33, 012041.
• [6] Wei, S; Lampmas, S. Centrifugal Casting. In Centrifugal Casting. Ohio, ASM International; 2008, 15, 667-673.
• [7] Kapranos, P.; Carney, C.; Pola, A.; Jolly, M. Advanced Casting Methodologies: Investment Casting, Centrifugal Casting, Squeeze Casting, Metal Spinning, and Batch Casting. Comprehensive Materials Processing, 2014, 5, 39–67.
• [8] Campbell, J. “Casting”, Butterworth-Heinemann, Oxford, 1991.
• [9] Kamlesh (2001): Ph.D. Thesis, BVM Engineering College, Gujarat, India, p. 35.
• [10] Anjo, V. Numerical Simulation of Steady State Conduction Heat Transfer during the Solidification of Aluminum Casting in Green Sand Mould. Leonardo Electronic Journal of Practices and Technologies, 2012, 20, 15-24.
• [11] Kaschnitz, Z. Numerical simulation of centrifugal casting of pipes. IOP Conference Series: Materials Science and Engineering, 2012, 33012031.
• [12] Raju, PSS.; Mehrotra, SP. Materials Transactions. JIM, 2000, 41, 1626–1635.
• [13] Erhunmwun, ID.; Akpobi, JA.; Osunde, TA. Numerical Determination of the Effects of Pouring Temperature and Mold Preheat Temperature on the Solidification Time in Centrifugal Casting, Journal of the Nigerian Association of Mathematical Physics, 2018, Accepted Paper.