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47. The effect of non-uniform skelp temperature on X70 steel coil cooling

Author

Raj, Rishav, Wiskel, J. B., Gaudet, Michael J., Ivey, D. G., and Henein, H.

Abstract

This study explored the effect of varying steel skelp temperature (500 °C–600 °C) on the subsequent temperature-time (T-t) profile during and after coiling of low C (0.05 wt. %) X70 microalloyed steels. Three industrially produced steel coils with similar rough rolling temperatures (∼1050 °C) and finish rolling temperatures (∼850 °C) but different coiling temperatures (500 °C–600 °C) and different skelp thicknesses (19 mm and 25 mm) were studied. The surface temperature of each coil was measured using an infrared video camera. A three-dimensional heat transfer model was developed to predict the T-tprofiles. A lower (∼60 °C) initial skelp temperature near the head and tail of the skelp led to a reduced coil temperature. A higher (∼50 °C) temperature near the head and tail region of the skelp resulted in a more uniform coil temperature (a difference of ∼10 °C instead of ∼50 °C).

Published
2024
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