Numerical Simulation and Experiment Research on Temperature Field of Steel Slab in Walking Beam Furnace

Abstract:

This paper presents a study of the temperature fields of steel slab in a walking beam furnace. To simulate the temperature distribution in the slab of heating-up process in heating furnace, a two-dimensional mathematical model was developed. The heat transfer in the furnace was very complex, so the model was developed on the assumptions that the temperature of each section of the furnace was unchangeable, the slab moved in the furnace in even velocity, the heat transfer between the slab and the walking beam was out of consideration, the longitudinal heat conduction of the slab and the effect of the scale on the heat conduction were neglected. The equations were calculated by the finite difference method. A black box experiment research was carried out to measure the temperature history of the slab as it passed through the furnace. The comparison of the calculated results with the measured results showed that the model worked well for simulating the temperature distribution of the slab in walking beam furnace. With this developed model, the optimizing of hot rolling and heating processes of steel slab can be investigated in the future.

• Periodical: Materials Science Forum (Volumes 704-705)
• Pages: 412-418
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.704-705.412
• Online since: December 2011
• Authors: Chao Chen, Cui Jiao Ding, De Gang Ouyang, Zhan Zeng Liu, Zhong Hua Song, Sheng Chen, Chao Yang
• Keywords: Black Box Experiment, Numerical Simulation, Steel Slab, Temperature Field

References

[1] J.G. Kim, K.Y. Huh, I.T. Kim, Three-dimensional analysis of the walking-beam-type slab reheating furnace in hot strip mills, Numer. Heat Transfer, Part A 38 (2000) 589–609.

DOI: 10.1080/104077800750021152

[2] J.G. Kim, K.Y. Huh, Prediction of transient slab temperature distribution in the re-heating furnace of a walking-beam type for rolling of steel slabs, ISIJ Int. 40 (2000) 1115–1123.

DOI: 10.2355/isijinternational.40.1115

[3] A.M. Maki, P.J. Osterman, M.J. Luomala, Numerical study of the pusher-type slab reheating furnace, Scand. J. Metall. 31 (2002) 81–87.

DOI: 10.1034/j.1600-0692.2002.310201.x

[4] K.S. Chapman, S. Ramadhyani, R. Viskanta, Modeling and parametric studies of heat transfer in a direct-fired continuous reheating furnace, Metall. Trans. 22B (1991) 513–521.

DOI: 10.1007/bf02654290

[5] Z. Li, P.V. Barr, J.K. Brimacombe, Computer simulation of the slab reheating furnace, Can. Metall. Quarterly 27 (1988) 187–196.

DOI: 10.1179/cmq.1988.27.3.187

[6] A. Jaklicˇ, B. Glogovac, T. Kolenko, B. Zupancˇicˇ, B. Tezˇak, A simulation of heat transfer during billet transport, Applied Thermal Engineering 22 (2002) 873–883.

DOI: 10.1016/s1359-4311(02)00022-4

[7] K.S. Chapman, S. Ramadhyani, R. Viskanta, Two-dimensional modeling and parametric studies of heat transfer in a direct-fired furnace with impinging jets, Combust. Sci. Technol. 97 (1994) 99–120.

DOI: 10.1080/00102209408935370

[8] C. Zhang, T. Ishii, S. Sugiyama, Numerical modeling of the thermal performance of regenerative slab reheat furnaces, Numer. Heat Transfer Part A 32 (1997) 613–631.

DOI: 10.1080/10407789708913909