Commenced in January 2007
Paper Count: 30578
3-D Transient Heat Transfer Analysis of Slab Heating Characteristics in a Reheating Furnace in Hot Strip Mills
Abstract:The reheating furnace is used to reheat the steel slabs before the hot-rolling process. The supported system includes the stationary/moving beams, and the skid buttons which block some thermal radiation transmitted to the bottom of the slabs. Therefore, it is important to analyze the steel slab temperature distribution during the heating period. A three-dimensional mathematical transient heat transfer model for the prediction of temperature distribution within the slab has been developed. The effects of different skid button height (H=60mm, 90mm, and 120mm) and different gap distance between two slabs (S=50mm, 75mm, and 100mm) on the slab skid mark formation and temperature profiles are investigated. Comparison with the in-situ experimental data from Steel Company in Taiwan shows that the present heat transfer model works well for the prediction of thermal behavior of the slab in the reheating furnace. It is found that the skid mark severity decreases with an increase in the skid button height. The effect of gap distance is important only for the slab edge planes, while it is insignificant for the slab central planes.
Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1109483Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 1976
 M. Y. Kim, “A Heat Transfer Model for the Analysis of Transient Heating of the Slab in a Direct-Fired Walking Beam Type Reheating Furnace,” International Journal of Heat and Mass Transfer, 50, pp. 3740-3748, 2007.
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 S. H. Han, D. J. Chang, C. Huh, “Efficiency Analysis of Radiative Slab Heating in a Walking-Beam-Type Reheating Furnace,” Energy, 36, pp. 1265-1272, 2011.
 V. K. Singh, Talukdar P. B. Talukdar, “Comparisons of Different Heat Transfer Models of a Walking Beam Type Reheat Furnace,” International Communications in Heat and Mass Transfer, 47, pp. 20-26. 2013.