Numerical simulation of solidification process for Q345R thick slab continuous casting

Zheng Xinyu; Sun Yanhui; Feng Qi; Gao Qing; Yang Wenzhi; Yang Jian

doi:10.7513/j.issn.1004-7638.2024.05.018

Volume 45 Issue 5

Oct. 2024

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Zheng Xinyu, Sun Yanhui, Feng Qi, Gao Qing, Yang Wenzhi, Yang Jian. Numerical simulation of solidification process for Q345R thick slab continuous casting[J]. IRON STEEL VANADIUM TITANIUM, 2024, 45(5): 139-146. doi: 10.7513/j.issn.1004-7638.2024.05.018

Citation:

Zheng Xinyu, Sun Yanhui, Feng Qi, Gao Qing, Yang Wenzhi, Yang Jian. Numerical simulation of solidification process for Q345R thick slab continuous casting[J]. IRON STEEL VANADIUM TITANIUM, 2024, 45(5): 139-146. doi: 10.7513/j.issn.1004-7638.2024.05.018

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Numerical simulation of solidification process for Q345R thick slab continuous casting

doi: 10.7513/j.issn.1004-7638.2024.05.018

1.
Collaborative Innovation Center of Steel Technology, University of Science and Technology Beijing, Beijing 100083, China
2.
Xiangtan Iron & Steel Co., Ltd., Hunan Valin, Xiangtan411101, Hunan, China

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Received Date: 2023-09-22
Available Online: 2024-10-30
Publish Date: 2024-10-30

Abstract

Abstract

In order to improve the quality of Xianggang Q345R thick slab casting billet, a solidification heat transfer model was established and was verified and corrected by nail shooting experiment. Through numerical simulation, the existing production process was evaluated, and the influence of casting speed, cooling water, superheat, thickness and width of casting billet on the pressing position and pressing interval were studied respectively, and their influence on the corner temperature of the casting billet was studied. The simulation results are analyzed, and the reasonable continuous casting process parameters and billet specifications during the production of the steel grade are obtained as follows: the cross-section is 450 mm×2 270 mm, the tensile speed is 0.55 m/min, the superheat is 15~25 ℃, and the specific water volume of secondary cooling is 0.26 L/kg, the straightening zone is Seg.8~9, and the light pressure area is Seg.13~15. With these casting parameters applied, the center segregation of the slab and the crack defects in the corners can be effectively controlled.
- continuous casting,
- pressure vessel steel,
- thick slabs,
- nail shooting experiment,
- numerical simulation,
- soft reduction,
- central segregation,
- cracks in the corners

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References(15)

References

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