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| Simulation of Thermal Evolution of Strip and Determination of Heat Transfer Coefficient in Deformation Zone During Hot Rolling |
TANG Guangbo1,2,LIU Zhengdong2,KANG Yonglin1,
WANG Wei3,ZHANG Pijun3 |
| 1. School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China;2. Institute for Structure Materials, Central Iron and Steel Research Institute, Beijing 100081, China; 3. Technical Center, Baoshan Iron and Steel Co., Ltd., Shanghai 201900, China |
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Abstract The numerical simulation method was used to study the heat transfer and temperature distribution of rolling piece during hot strip rolling. According to the temperature measured in production, a statistical model of interface heat transfer coefficient (HTC) for prediction of thermal evolution of rolling piece in roll gap was developed; and some features of the thermal evolution and temperature distribution on the cross section of rolling piece in roll gap are analyzed. The results show that there is a good agreement between the values predicted by the model and measured ones; the interface HTC between rolling piece and work roll is dependent on the mean rolling pressure as well as the rolling speed; and there is a significant temperature gradient on the cross section of rolling piece in roll gap.
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Received: 01 January 1900
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2006, Vol. 41 