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Fluid Flow and Heat Transfer in a Tundish with Channel Induction Heating for Sequence Casting with a Constant Superheat Control |
TANG Haiyan(), LI Xiaosong, ZHANG Shuo, ZHANG Jiaquan |
School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China |
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Cite this article:
TANG Haiyan, LI Xiaosong, ZHANG Shuo, ZHANG Jiaquan. Fluid Flow and Heat Transfer in a Tundish with Channel Induction Heating for Sequence Casting with a Constant Superheat Control. Acta Metall Sin, 2020, 56(12): 1629-1642.
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Abstract Casting with superheat control is important in improving the quality and stability of steel products and reducing metallurgical defects. In recent years, the channel-type induction heating tundish is among the new technologies that have been used by the steel industry. It exhibits an effective liquid steel temperature control during continuous casting. However, in such technology, the fluid flow and heat transfer are significantly different from those in a conventional tundish. This is because of the implementation of the heating practice and action of the electromagnetic force. In this work, a mathematical model of electromagnetic-thermal-flow coupling is developed to investigate the feature of the electromagnetic force, fluid flow, and heat transfer in a six-strand H-type induction heating tundish. The flow field and temperature field characteristics in the tundish under different application modes of induction heating are compared. Moreover, the applicability of the traditional method of cold water modeling to the structure optimization of tundish with induction heating is discussed. The results indicate the eccentric distribution of the electromagnetic force in the tundish channel, pointing to the eccentric position of the channel. Additionally, the results suggest that the molten steel in the channel flows out with rotation. For case A0, an increase of 22 K in the molten steel temperature is observed after heating for 1500 s at 1000 kW power, compared with that without heating. However, due to the pinch effect of the electromagnetic force, the short-circuit flow at the outlets near the channel intensifies, and the flow consistency in tundish worsens. Compared optimized case A4 with the prototype case A0, the short-circuit flow of the outlets near the channel disappears, the temperature difference among the different flows is reduced, the flow consistency in the whole tundish is improved, and the heating rate is increased. The present study also demonstrates that the tundish structure optimization method under a cold state is still an important evidence for the induction heating state.
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Received: 03 June 2020
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Fund: National Natural Science Foundation of China(51874033);National Natural Science Foundation of China(U1860111);Natural Science Foundation of Beijing(2182038) |
[1] |
Sahai Y. Tundish technology for casting clean steel: A review [J]. Metall. Mater. Trans., 2016, 47B: 2095
|
[2] |
Mao B, Tao J M, Jiang T X. Tundish channel type induction heating technology for continuous casting [J]. Contin. Cast., 2008, (5): 4
|
|
(毛 斌, 陶金明, 蒋桃仙. 连铸中间包通道式感应加热技术 [J]. 连铸, 2008, (5): 4)
|
[3] |
Cong L, Zhang J M, Lei S W, et al. Numerical simulation on tundish induction heating [J]. Res. Iron Steel, 2014, 42(3): 20
|
|
(丛 林, 张炯明, 雷少武等. 中间包感应加热的数值模拟 [J]. 钢铁研究, 2014, 42(3): 20)
|
[4] |
He F, Zhang L Y, Xu Q Y. Optimization of flow control devices for a T-type five-strand billet caster tundish: Water modeling and numerical simulation [J]. China Foundry, 2016, 13: 166
doi: 10.1007/s41230-016-5132-9
|
[5] |
Wang X Y, Zhao D T, Qiu S T, et al. Effect of tunnel filters on flow characteristics in an eight-strand tundish [J]. ISIJ Int., 2017, 57: 1990
doi: 10.2355/isijinternational.ISIJINT-2017-165
|
[6] |
Ramirez O S D, Torres-Alonso E, Banderas J A R, et al. Thermal and fluid-dynamic optimization of a five strand asymmetric delta shaped billet caster tundish [J]. Steel Res. Int., 2018, 89: 1700428
doi: 10.1002/srin.v89.3
|
[7] |
Morales R D, López-Ramirez S, Palafox-Ramos J, et al. Numerical and modeling analysis of fluid flow and heat transfer of liquid steel in a tundish with different flow control devices [J]. ISIJ Int., 1999, 39: 455
doi: 10.2355/isijinternational.39.455
|
[8] |
Cwudziński A. Numerical and physical modeling of liquid steel active flow in tundish with subflux turbulence controller and dam [J]. Steel Res. Int., 2014, 85: 902
doi: 10.1002/srin.v85.5
|
[9] |
Harnsihacacha A, Piyapaneekoon A, Kowitwarangkul P. Physical water model and CFD studies of fluid flow in a single strand tundish [J]. Mater. Today: Proceedings, 2018, 5: 9220
|
[10] |
Fang Q, Zhang H, Luo R H, et al. Optimization of flow, heat transfer and inclusion removal behaviors in an odd multistrand bloom casting tundish [J]. J. Mater. Res. Technol., 2020, 9: 347
doi: 10.1016/j.jmrt.2019.10.064
|
[11] |
Ueda T, Ohara A, Sakurai M, et al. A tundish provided with a heating device for molten steel [P]. EU Pat, 0119853, 1984
|
[12] |
Mabuchi M, Yoshii Y, Nozaki T, et al. Investigation of the purification of molten steel by using tundish heater: Development on the controlling method of casting temperature in continuous casting V [J]. ISIJ Int., 1984, 70: 118
|
[13] |
Miura R, Nisihara R, Tanaka H, et al. Tundish induction heater of No.2 continuous caster at Yawata works [J]. ISIJ Int., 1995, 81: T30
|
[14] |
Yang B, Lei H, Bi Q, et al. Electromagnetic conditions in a tundish with channel type induction heating [J]. Steel Res. Int., 2018, 89: 1800145
doi: 10.1002/srin.v89.10
|
[15] |
Yue Q, Pei X, Zhang C, et al. Magnetohydrodynamic calculation on double-loop channel induction tundish [J]. Arch. Metall. Mater., 2018, 63: 329
|
[16] |
Xing F, Zheng S G, Zhu M Y. Motion and removal of inclusions in new induction heating tundish [J]. Steel Res. Int., 2018, 89: 1700542
doi: 10.1002/srin.v89.6
|
[17] |
Wang Q, Li B K, Tsukihashi F. Modeling of a thermo-electromagneto-hydrodynamic problem in continuous casting tundish with channel type induction heating [J]. ISIJ Int., 2014, 54(2): 311
doi: 10.2355/isijinternational.54.311
|
[18] |
Tang H Y, Guo L Z, Wu G H, et al. Hydrodynamic modeling and mathematical simulation on flow field and inclusion removal in a seven-strand continuous casting tundish with channel type induction heating [J]. Metals, 2018, 8: 374
doi: 10.3390/met8060374
|
[19] |
Wu G H, Tang H Y, Xiao H, et al. Physical simulation on a 7-strand continuous casting tundish with channel type induction heating [J]. Iron Steel, 2017, 52(11): 20
|
|
(吴光辉, 唐海燕, 肖 红等. 通道式感应加热7流中间包流场的物理模拟 [J]. 钢铁, 2017, 52(11): 20)
|
[20] |
Zhang S, Tang H Y, Liu J W, et al. Structural optimization of a six-strand H-type channel induction heating tundish [J]. J. Iron Steel Res., 2019, 31: 787
|
|
(张 硕, 唐海燕, 刘锦文等. 六流H型通道感应加热中间包的结构优化 [J]. 钢铁研究学报, 2019, 31: 787)
|
[21] |
Tang H Y, Yu M, Li J S, et al. Numerical and physical simulation on inner structure optimization of a continuous casting tundish and its metallurgical effect [J]. J. Univ. Sci. Technol. Beijing, 2009, 31(S1): 38
|
|
(唐海燕, 于 满, 李京社等. 连铸中间包内部结构优化的数理模拟及冶金效果 [J]. 北京科技大学学报, 2009, 31(S1): 38)
|
[22] |
Yang B, Deng A Y, Wang E G. Simulating the magnetic field/transfer phenomenon of the tundish with channel type inducting heating [J]. IOP Conf. Ser.: Mater. Sci. Eng., 2018, 424: 012060
doi: 10.1088/1757-899X/424/1/012060
|
[23] |
Yue Q, Zhang C B, Pei X H. Magnetohydrodynamic flows and heat transfer in a twin-channel induction heating tundish [J]. Ironmak. Steelmak., 2017, 44: 227
doi: 10.1080/03019233.2016.1209919
|
[24] |
Liu H P. State of the art of numerical simulation of magneto-hydro dynamics in the continuous casting process [J]. Contin. Cast., 2015, (1): 7
doi: 10.13228/j.boyuan.issn1005-4006.20150012
|
|
(刘和平. 连铸过程中电磁流体力学的数值模拟现状及发展趋势 [J]. 连铸, 2015, (1): 7)
doi: 10.13228/j.boyuan.issn1005-4006.20150012
|
[25] |
Jiang G Z, Kong J Y, Li G F, et al. Numerical simulation and optimization of flow field in tundish [J]. China Metall., 2008, 18(2): 46
|
|
(蒋国璋, 孔建益, 李公法等. 中间包流场的数值模拟及其优化 [J]. 中国冶金, 2008, 18(2): 46)
|
[26] |
Xing F, Zheng S G, Liu Z H, et al. Flow field, temperature field, and inclusion removal in a new induction heating tundish with bent channels [J]. Metals, 2019, 9: 561
doi: 10.3390/met9050561
|
[27] |
Shi Z M, E J Q, Liu C Y, et al. Numerical simulation of flow phenomena and optimum operation of tundish [J]. J. Cent. South Univ. Technol., 2003, 10: 155
doi: 10.1007/s11771-003-0059-x
|
[28] |
Wen Y M, Han Y S, Liu Q, et al. Optimization of multi-fields coupled molten steel behavior in bloom continuous casting [J]. Iron Steel, 2018, 53(6): 53
|
|
(文艳梅, 韩延申, 刘 青等. 大方坯结晶器内的多物理场模拟优化 [J]. 钢铁, 2018, 53(6): 53)
|
[29] |
Han L H, Yu C M, Qu M L. Numerical simulation of flow and temperature fields in electroslag remelting process [J]. Res. Exp. Lab., 2018, 37(1): 47
|
|
(韩丽辉, 于春梅, 曲明磊. 电渣重熔过程流场和温度场的数值模拟 [J]. 实验室研究与探索, 2018, 37(1): 47)
|
[30] |
Vives C, Ricou R. Magnetohydrodynamic flows in a channel-induction furnace [J]. Metall. Trans., 1991, 22B: 193
|
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