Physical simulation of tundish heated by plasma

WANG Yong; ZHAO Meng-jing; YANG Shu-feng; LI Jing-she; ZHANG Guan-xu; XI Xiao-Jun

doi:10.13374/j.issn2095-9389.2020.03.25.s16

Volume 42 Issue S

Dec. 2020

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Article Navigation > Chinese Journal of Engineering > 2020 > 42(S): 68-75

WANG Yong, ZHAO Meng-jing, YANG Shu-feng, LI Jing-she, ZHANG Guan-xu, XI Xiao-Jun. Physical simulation of tundish heated by plasma[J]. Chinese Journal of Engineering, 2020, 42(S): 68-75. doi: 10.13374/j.issn2095-9389.2020.03.25.s16

Citation:

WANG Yong, ZHAO Meng-jing, YANG Shu-feng, LI Jing-she, ZHANG Guan-xu, XI Xiao-Jun. Physical simulation of tundish heated by plasma[J]. Chinese Journal of Engineering, 2020, 42(S): 68-75. doi: 10.13374/j.issn2095-9389.2020.03.25.s16

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Physical simulation of tundish heated by plasma

doi: 10.13374/j.issn2095-9389.2020.03.25.s16

WANG Yong^{1, 2},
ZHAO Meng-jing^{1, 2},
YANG Shu-feng^{1, 2
,
,},
LI Jing-she^{1, 2},
ZHANG Guan-xu^{1, 2},
XI Xiao-Jun^{1, 2}

1.
School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China
2.
Beijing Key Laboratory of Special Melting and Preparation of High-End Metal Materials, Beijing 100083, China

More Information

Corresponding author: E-mail: yangshufeng@ustb.edu.cn
Received Date: 2020-03-25
Publish Date: 2020-12-25

Abstract

Abstract

This study proposes a model to increase the heating efficiency of tundish plasma heating and improve the flow of molten steel in a tundish during production. A physical model was simulated based on the tundish prototype of a steel plant, and the temperature field and flow field of molten steel in the tundish with and without plasma heating at different plasma heating positions were analyzed. The research results showed that in the tundish without plasma heating, the proportion of the dead zone was high, reaching 36%. Moreover, the dead zone was mainly concentrated in the upper area outside the weir in the tundish. When the heating position was located outside the weir, it was found that there was little difference in the proportion of the dead zone between the tundish with and without plasma heating. The temperature near the heating position increased sharply, and the temperature difference of molten metal between the inside and outside of the weir was large. Moreover, the overall temperature distribution in the tundish was not uniform. When the heating position was located inside the weir, the proportion of the dead zone significantly decreased, reaching 29.2%. Further, the average residence time increased by about 57 s. The temperature of the outlet of the tundish increased significantly (about 7 ℃), and the temperature distribution in the tundish was uniform.
- tundish,
- plasma heating,
- physical simulation,
- temperature distribution,
- proportion of the dead zone

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References(23)

References

[1]	Sahai Y. Tundish technology for casting clean steel: a review. Metall Mater Trans B, 2016, 47(4): 2095 doi: 10.1007/s11663-016-0648-3
[2]	Chang S, Zhong L C, Zou Z S. Simulation of flow and heat fields in a seven-strand tundish with gas curtain for molten steel continuous-casting. ISIJ Int, 2015, 55(4): 837 doi: 10.2355/isijinternational.55.837
[3]	Kumar A, Mazumdar D, Koria S C. Modeling of fluid flow and residence time distribution in a four-strand tundish for enhancing inclusion removal. ISIJ Int, 2008, 48(1): 38 doi: 10.2355/isijinternational.48.38
[4]	杜亞偉, 杜海明, 杜玉蘭, 等. 連鑄中間包熱損失影響因素的數值分析. 河南冶金, 2017, 25(4):14 doi: 10.3969/j.issn.1006-3129.2017.04.005 Du Y W, Du H M, Du Y L, et al. Numerical analysis the influence factors of the heat loss in the continuous tundish. Henan Metall, 2017, 25(4): 14 doi: 10.3969/j.issn.1006-3129.2017.04.005
[5]	Wang Q, Wang F, Wang B, et al. Fluid flow and heat transfer in a continuous casting tundish with the channel type induction heating. J Iron Steel Res Int, 2012, 19(S2): 969
[6]	Vargas-Zamora A, Morales R D, Díaz-Cruz M, et al. Heat and mass transfer of a convective-stratified flow in a trough type tundish. Int J Heat Mass Transfer, 2003, 46(16): 3029 doi: 10.1016/S0017-9310(03)00068-1
[7]	田建英, 張雪良, 李京社, 等. 連鑄中間包等離子加熱技術綜述. 寬厚板, 2017, 23(2):45 doi: 10.3969/j.issn.1009-7864.2017.02.012 Tian J Y, Zhang X L, Li J S, et al. Review of plasma heating technology for continuous casting tundish. Wide Heavy Plate, 2017, 23(2): 45 doi: 10.3969/j.issn.1009-7864.2017.02.012
[8]	徐靖馳, 蹇華, 聶高升, 等. 感應加熱技術在連鑄中間包上的應用. 冶金設備, 2018(6):54 doi: 10.3969/j.issn.1001-1269.2018.06.015 Xu J C, Jian H, Nie G S, et al. Application of induction heating technology on casting middle package. Metall Equip, 2018(6): 54 doi: 10.3969/j.issn.1001-1269.2018.06.015
[9]	姜周華, 李晨雋, 姜永林, 等. 鋼水爐外電渣加熱的實驗研究. 鋼鐵, 1995, 30(3):12 Jiang Z H, Li C J, Jiang Y L, et al. Laboratory research on electroslag heating of molten steel in ladle. Iron Steel, 1995, 30(3): 12
[10]	張新生, 周筠清. 電渣加熱中間包鋼水的數學模型及實驗研究. 冶金能源, 1997, 16(2):32 Zhang X S, Zhou Y Q. A mathematical model and simulated test of electroslag heating of liquid steel in a tundish. Energy Metall Ind, 1997, 16(2): 32
[11]	李陽, 李亮, 陳圓圓, 等. 側壁式感應加熱中間包磁/熱/流耦合模擬. 東北大學學報(自然科學版), 2017, 38(7):966 Li Y, Li L, Chen Y Y, et al. Numerical simulation of electromagnetic-thermal-hydrodynamic field in tundish with sidewall-type induction heating. J Northeast Univ Nat Sci, 2017, 38(7): 966
[12]	佐祥均, 閻建武, 羅利華, 等. 等離子中間罐加熱技術在連鑄過程中的應用. 鋼鐵技術, 2016(1):10 Zuo X J, Yan J W, Luo L H, et al. Application of plasma tundish heating technology in continuous casting process. Iron Steel Technol, 2016(1): 10
[13]	Badie J M, Bertrand P, Flamant G. Temperature distribution in a pilot plasma tundish: comparison between plasma torch and graphite electrode systems. Plasma Chem Plasma Process, 2001, 21(2): 279 doi: 10.1023/A:1007004532610
[14]	Barrón-Meza M A, Barreto-Sandoval J D J, Morales R D. Physical and mathematical models of steel flow and heat transfer in a tundish heated by plasma. Metall Mater Trans B, 2000, 31(1): 63 doi: 10.1007/s11663-000-0131-y
[15]	蔣軍, 路海波, 李勤勇, 等. 中間罐等離子加熱技術在青島特鋼的應用. 連鑄, 2018, 43(2):7 Jiang J, Lu H B, Li Q Y, et al. Application of tundish plasma heater. Contin Cast, 2018, 43(2): 7
[16]	Pak Y A, Filippov G A, Yusupov D I, et al. Two-strand tundish with chambers for plasma heating of liquid metal. Metallurgist, 2014, 58(7): 672
[17]	Chattopadhyay K, Isac M, Guthrie R I L. Physical and mathematical modelling of steelmaking tundish operations: a review of the last decade (1999–2009). ISIJ Int, 2010, 50(3): 331 doi: 10.2355/isijinternational.50.331
[18]	楊樹峰, 吳金強, 李京社, 等. 四流中間包控流裝置優化物理模擬. 中國冶金, 2019, 29(4):81 Yang S F, Wu J Q, Li J S, et al. Physical simulation on optimization of flow control devices in four strand tundish. China Metall, 2019, 29(4): 81
[19]	Braga B M, Tavares R P. Description of a new tundish model for treating RTD data and discussion of the communication “New insight into combined model and revised model for RTD curves in a multi-strand tundish” by Lei. Metall Mater Trans B, 2018, 49(4): 2128 doi: 10.1007/s11663-018-1295-7
[20]	Chatterjee S, Chattopadhyay K. Transient steel quality under non-isothermal conditions in a multi-strand billet caster tundish: part Ⅱ. Effect of a flow-control device. Ironmaking Steelmaking, 2017, 44(6): 413 doi: 10.1080/03019233.2016.1214015
[21]	劉崇林, 崔衡, 李源源, 等. 雙流板坯中間包流場優化的物理模擬研究. 冶金設備, 2019(3):9 Liu C L, Cui H, Li Y Y, et al. Study on physical simulation for flow field optimization in tundish for two-strand slab. Metall Equip, 2019(3): 9
[22]	吳光輝, 唐海燕, 肖紅, 等. 通道式感應加熱7流中間包流場的物理模擬. 鋼鐵, 2017, 52(11):20 Wu G H, Tang H Y, Xiao H, et al. Physical simulation on a 7-strand continuous casting tundish with channel type induction heating. Iron Steel, 2017, 52(11): 20
[23]	Barreto-Sandoval J D J, Hills A W S, Barrón-Meza M A, et al. Physical modelling of tundish plasma heating and its mathematical interpretation. ISIJ Int, 1996, 36(9): 1174 doi: 10.2355/isijinternational.36.1174