Dynamic Water Modeling and Application of Billet Continuous Casting

钢铁研究学报(英文版), 2008, 15(2): 14-17.

^1, , ^2, , ^3, , ^4, , ^5, , ^6,

1.School of Information Science and Engineering, Northeastern University, Shenyang 110004, Liaoning, China

2.School of Information Science and Engineering, Northeastern University, Shenyang 110004, Liaoning, China

3.School of Information Science and Engineering, Northeastern University, Shenyang 110004, Liaoning, China

4.School of Information Science and Engineering, Northeastern University, Shenyang 110004, Liaoning, China

5.Sanming Iron and Steel Corp, 365000, Fujian, China

6.School of Materials and Metallurgy, Northeastern University, Shenyang 110004, Liaoning, China

基金项目: National Hi-tech Research and Development Program of China(2006AA040307)

Dynamic Water Modeling and Application of Billet Continuous Casting

LIU Wen-hong ^1, , XIE Zhi ^2, , JI Zhen-ping ^3, , WANG Biao ^4, , LAI Zhao-yi ^5, , JIA Guang-lin ^6,

1.School of Information Science and Engineering, Northeastern University, Shenyang 110004, Liaoning, China

2.School of Information Science and Engineering, Northeastern University, Shenyang 110004, Liaoning, China

3.School of Information Science and Engineering, Northeastern University, Shenyang 110004, Liaoning, China

4.School of Information Science and Engineering, Northeastern University, Shenyang 110004, Liaoning, China

5.Sanming Iron and Steel Corp, 365000, Fujian, China

6.School of Materials and Metallurgy, Northeastern University, Shenyang 110004, Liaoning, China

Keywords： billet continuous casting

The continuous casting process is used for solidifying molten steel into semi-finished steel. The technology of secondary cooling is extremely important for output of the casting machine and billet quality. A dynamic water model was introduced, including solidification model in the secondary cooling, feedforward control strategy based on continuous temperature measurement in tundish, and feedback control strategy based on surface temperature measurement. The mathematical model of solidification process was developed according to the principle of solidification, and the solidification model was validated by measuring billet shell thickness through shooting nail and sulfur print. Primary water distribution was calculated by the solidification model according to procedure parameters, and it was adjusted by the other two control strategies online. The model was applied on some caster and billet quality was obviously improved, indicating that the dynamic water model is better than conventional ones.

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Dynamic Water Modeling and Application of Billet Continuous Casting

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