Progress and Perspective of Functioned Continuous Casting Tundish Through Heating and Temperature Control

doi:10.11900/0412.1961.2021.00046

Acta Metall Sin

2021, Vol. 57

Issue (10): 1229-1245 DOI: 10.11900/0412.1961.2021.00046

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Progress and Perspective of Functioned Continuous Casting Tundish Through Heating and Temperature Control

TANG Haiyan¹(

), LIU Jinwen¹, WANG Kaimin¹, XIAO Hong¹^,², LI Aiwu², ZHANG Jiaquan¹

^1.School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China
^2.Electromagnetic Center, Hunan Zhongke Electric Co. , Ltd. , Yueyang 414000, China

Cite this article:

TANG Haiyan, LIU Jinwen, WANG Kaimin, XIAO Hong, LI Aiwu, ZHANG Jiaquan. Progress and Perspective of Functioned Continuous Casting Tundish Through Heating and Temperature Control. Acta Metall Sin, 2021, 57(10): 1229-1245.

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Abstract

The continuous casting tundish is one of the key metallurgical reactors for the sequence casting process of liquid steel, which is a recent novel technology equipped with heating and temperature control units to produce improved quality casting strands and their hot rolling products. To maintain a stable casting temperature for sequence production under given superheating and casting speeds, a tundish technology equipped with heating and temperature control units is required. Aiming at addressing some issues in the application of two typical heating technologies, plasma and channel induction, in tundishes for special steel production, we investigated the heating principles and features of instrumentation. The challenges in the development and applications of plasma heating and discussed the details of the channel induction heating technique adopted in the industry were reviewed. The heating coil designs, arrangements, and the effects on the fluid flow, temperature, and magnetic fields in tundishes were also analyzed, paying special attention to inclusion removal. Finally, our recent study and applications regarding this issue are presented with special attention to the understanding, new findings, and suggestions for the novel tundish technology for its applications and further improved steel quality.

Key words: continuous casting tundish plasma heating induction heating electromagnetic field flow heat transfer inclusion removal

Received: 25 January 2021

ZTFLH:

TF341

Fund: National Natural Science Foundation of China(51874033);National Key Research and Development Program of China(016YEB0601302);Natural Science Foundation of Beijing(218-2038)

About author: TANG Haiyan, professor, Tel: (010)62332880, E-mail: tanghaiyan@metall.ustb.edu.cn

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	Haiyan TANG
	Jinwen LIU
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	Hong XIAO
	Aiwu LI
	Jiaquan ZHANG

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https://www.ams.org.cn/EN/10.11900/0412.1961.2021.00046 OR https://www.ams.org.cn/EN/Y2021/V57/I10/1229

Table 1 Advantages and disadvantages of channel induction heating and plasma heating tundishes^[4,5,15-21]

Fig.1 Schematic of plasma heating device^[22]

Fig.2 Schematic of channel-type induction heating in tundish^[53]

Fig.3 Schematic of heating channel location in a 7-strand tundish^[53]

Fig.4 Non-isothermal flow fields of tundish at different moments with 5℃ of temperature difference between inside and outside the channel^[53]

Fig.5 Isothermal flow fields of tundish at different moments with 0℃ of temperature difference between inside and outside channel^[53]

Fig.6 Paths of different sizes of inclusions in tundish^[53]

Fig.7 Induced magnetic field (B) distribution in an H-type 6-strand dual-channel induction tundish^[93]

Fig.8 Residence time distribution E(θ) curves in tundish from water modelling (θ—dimensionless time)^[94](a) split channel(b) straight channel

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