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| NUMERICAL SIMULATION OF LIQUID STEEL SUPERHEAT REMOVAL IN SLAB CONTINUOUS CASTING MOLD |
| YU Haiqi; ZHU Miaoyong |
| School of Materials and Metallurgy; Northeastern University; Shenyang 110004 |
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Cite this article:
YU Haiqi ZHU Miaoyong. NUMERICAL SIMULATION OF LIQUID STEEL SUPERHEAT REMOVAL IN SLAB CONTINUOUS CASTING MOLD. Acta Metall Sin, 2009, 45(4): 476-484.
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Abstract Mathematical model was developed to study the 3D temperature distribution and heat transfer from superheated liquid steel to the inside of the solidifying shell in the slab continuous casting mold. The effects of some factors, such as submergence depth and port angle of submerged entry nozzle (SEN), mold width, casting speed, superheat temperature, argon gas injection, electromagnetic brake (EMBr) and also including the argon gas flow rate and current intensity etc., on the temperature distribution and heat transfer of superheated liquid steel in the mold were analyzed. The results indicate that the maximum heat input to the solidifying shell forefront occurs near the impingement point of liquid steel on the narrow face of mold, and the most superheat of superheated liquid steel is dissipated near the impingement zone. Heat flux of superheated liquid steel delivered to the shell surface increases in direct proportion to the casting speed and superheat temperature, respectively. Argon gas injection leads to a substantial increase in superheat flux to the impingement zone of narrow face and the upper region of wide face. EMBr is beneficial in increasing the temperature of upper region of the mold, but has no obvious effect on the heat flux distribution. The double action of argon gas injection and EMBr also produces an increase in heat flux to the upper region of wide face, which has no visible influence for the hat flux distribution of impingement zone.
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Received: 30 July 2008
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| Fund: Supported by National Natural Science Foundation of China and Bao Steel Co. (No.50674020) and Program for New Century Excellent Talents in University (No.NCET–04–0285) |
| [1] Zhu Z Y, Wang X H, Wang W J. Iron Steel Res, 2000; 115(4): 51
(朱志远, 王新华, 王万军. 钢铁研究, 2000; 115(4): 51)
[2] Lait J E, Brimacombe J K, Weinberg F. Ironmaking Steel making, 1974; 2: 90
[3] Lally B, Biegler L, Henein H. Metall Trans, 1990; 21B: 761
[4] Yang B J, Su J Y. Iron Steel, 1996; 31(9): 24
(杨秉俭, 苏俊义. 钢铁, 1996; 31(9): 24)
[5] Savage J, Pritchard W H. J Iron Steel Inst, 1954; 178: 269
[6] Savage J. J Iron Steel Inst, 1962; 200: 41
[7] Flint P J. 73th Steelmaking Conf, Warrendale, PA: Iron and Steel Society, 1990: 481
[8] Davies R, Blake N, Campell P. Proceeding of the 4th International Conference of Continuous Casting, Brussels, D¨usseldorf: Verlag Stahleisen, 1988: 645
[9] Huang X, Thomas B G, Najjar F M. Metall Trans, 1992; 23B: 339
[10] Thomas B G, Huang X. 76th Steelmakng Conf, Warrendale, PA: Iron and Steel Society, 1993: 273
[11] Zhang J M, Wang L F, Wang X H, Zhang L, Tang H B. Acta Metall Sin, 2003; 39: 1281
(张炯明, 王立峰, 王新华, 张 立, 唐海波. 金属学报, 2003; 39: 1281)
[12] Li Z Y, Zhao J Z. Acta Metall Sin, 2006; 42: 211
(李中原, 赵九洲. 金属学报, 2006; 42: 211)
[13] Li D H, Qiu Y Q, Liu X H, Wang G D. Foundry Technol, 2004; 25: 529
(李东辉, 邱以清, 刘相华, 王国栋. 铸造技术, 2004; 25: 529)
[14] Gong T, Yang H X, Deng K. Chin J Comput Phys, 2000; 17: 690
(龚 涛, 杨海西, 邓 康. 计算物理, 2000; 17: 690)
[15] Choudhary S K, Mazumdar D, Ghosh A. ISIJ Int, 1993; 33: 764
[16] Shamsi M R R I, Ajmani S K. ISIJ Int, 2007; 47: 433
[17] Yang H L, Zhao L G, Zhang X Z, Deng K W, Li W C, Gan Y. Metall Mater Trans, 1998; 29B: 1345
[18] Yu H Q, Zhu M Y. Acta Metall Sin, 2008; 44: 619
(于海岐, 朱苗勇. 金属学报, 2008; 44: 619) |
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