Thermal properties of oxide scale on surface of work roll in hot rolling mill

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Abstract

In hot rolling processes, an accurate prediction of thermal expansion of work rolls is important because it affects the profile and the shape of rolled strips. Prediction of thermal expansion requires an interface heat transfer coefficient between the rolls and the strips. Oxide scale on the surface of the work roll (mill scale) is one of the important factor that affects the heat transfer coefficient. Although clear relation between the mill scale and the heat transfer coefficient is required, it has not clarified because forming mill scale in a laboratory is difficult. In this study, mill scale is formed by axis compression experiment in a laboratory. The heat transfer coefficients of mill scale are measured. The relation between the heat transfer coefficient and the thickness of mill scale is obtained.

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Yukawa, N., Abe, E., & Fujiwara, S. (2018). Thermal properties of oxide scale on surface of work roll in hot rolling mill. In Procedia Manufacturing (Vol. 15, pp. 59–64). Elsevier B.V. https://doi.org/10.1016/j.promfg.2018.07.170

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