大方坯结晶器内的多物理场模拟优化

doi:10.13228/j.boyuan.issn0449-749x.20170542

摘要
图/表
参考文献
相关文章 (15)

全文: PDF (1607 KB) HTML (1 KB)
输出: BibTeX | EndNote (RIS)

摘要针对某钢厂生产断面为240 mm×240 mm的42CrMo钢的方坯结晶器，采用有限体积和有限元相结合的数值模拟方法计算结晶器内的多物理场。首先，通过对结晶器内流动和凝固耦合计算优化水口浸入深度和拉速；其次，基于优化后的流场，采用磁场和流场耦合求解的方法得到优化的电流强度和电流频率。磁场模拟结果与现场实测数据较为吻合。研究表明，水口浸入深度为100 mm、拉速为0.7 m/min时可以获得优化的流场；基于该流场施加电磁搅拌后，搅拌器的电流强度从100增大到400 A时，钢液切向速度从0.042提高到0.300 m/s，而电流频率对钢液的流动影响较小。进而得出，优化的工艺操作方案为水口浸入深度为100 mm，铸坯拉速为0.7 m/min，电流为400 A，电流频率为2 Hz。

	服务

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章
	文艳梅
	韩延申
	刘青
	张炳祥
	曾凡政
	管敏

关键词 ：大方坯, 数值模拟, 电磁搅拌, 流场, 42CrMo

Abstract：Numerical simulation combining the finite element method and the finite volume method was employed to study the multi-fields in bloom mold with cross-sectional dimension of 240 mm×240 mm. Firstly， the parameters of submergence depth of the submerged entry nozzle （SEN） and casting speed were optimized by calculating the flow and solidification of molten steel. Secondly， the coupling calculations of magnetic?field and the optimized flow field were performed to optimize the parameters of electromagnetic stirring， such as current intensity and frequency. The simulated magnetic field was in good agreement with the measured data. The results show that the optimized SEN-depth is 100 mm and casting speed is 0.7 m/min. With the electromagnetic stirring， the tangential velocity increases from 0.042 to 0.300 m/s under the condition of casting speed 0.7 m/min and SEN-depth 100 mm， when the current intensity increases from 100 to 400 A. The frequency has little effect on fluid flow. Hence， the optimal flow field can be obtained with 100 mm of SEN-depth， 0.7 m/min of casting speed and 400 A/2 Hz of current.

Key words： bloom numerical simulation electromagnetic stirring flow field 42CrMo

收稿日期: 2017-11-08 出版日期: 2018-06-20

PACS:

TF7

引用本文:

文艳梅，韩延申，刘青，张炳祥，曾凡政，管敏. 大方坯结晶器内的多物理场模拟优化[J]. , 2018, 53(6): 53-60. WEN Yan-mei，HAN Yan-shen，LIU Qing，ZHANG Bing-xiang，ZENG Fan-zheng，GUAN Min. Optimization of multi-fields coupled molten steel behavior in bloom continuous casting. Iron and Steel, 2018, 53(6): 53-60.

链接本文:

http://www.chinamet.cn/Jweb_gt/CN/10.13228/j.boyuan.issn0449-749x.20170542 或 http://www.chinamet.cn/Jweb_gt/CN/Y2018/V53/I6/53

[1]	殷瑞钰.新世纪以来中国炼钢-连铸的进步及命题[J].中国冶金, 2014, 24(08):1-9
[1]	殷瑞钰.新世纪以来中国炼钢-连铸的进步及命题[J].中国冶金, 2014, 24(08):1-9
[2]	蔡开科.连铸结晶器[M]. 北京：冶金工业出版社，2008.
[2]	蔡开科.连铸结晶器[M]. 北京：冶金工业出版社，2008.
[3]	Chaudhary R, Ji C, Thomas B.G.,et alTransient Turbulent Flow in a Liquid-Metal Model of Continuous Casting,Including Comparison of Six Different Methods[J].Metall. Mater. Trans. B, 2011, 42(5):987-1007
[3]	Chaudhary R, Ji C, Thomas B.G.,et alTransient Turbulent Flow in a Liquid-Metal Model of Continuous Casting,Including Comparison of Six Different Methods[J].Metall. Mater. Trans. B, 2011, 42(5):987-1007
[4]	Hibbeler L C, Thomas B.G. Review of Mold Flux Entrainment in CC Molds Due to Shear Layer Instability.[c]//7th European Continuous-Casting Conference, Dusseldorf, Germany, 2011.
[4]	Hibbeler L C, Thomas B.G. Review of Mold Flux Entrainment in CC Molds Due to Shear Layer Instability.[c]//7th European Continuous-Casting Conference, Dusseldorf, Germany, 2011.
[5]	Thomas B·G, Zhang L F.. Mathematical Modeling of Fluid Flow in Continuous Casting [J][J].ISIJ int, 2001, 10(41):1181-1193
[5]	Thomas B·G, Zhang L F.. Mathematical Modeling of Fluid Flow in Continuous Casting [J][J].ISIJ int, 2001, 10(41):1181-1193
[6]	Chattopadhyay K, Isac M, Guthrie R.I.L. Applications of Computational Fluid Dynamics (CFD) in Iron- and Steelmaking: Part 2[J].Ironmaking & Steelmaking, 2010, 8(37):562-569
[6]	Chattopadhyay K, Isac M, Guthrie R.I.L. Applications of Computational Fluid Dynamics (CFD) in Iron- and Steelmaking: Part 2[J].Ironmaking & Steelmaking, 2010, 8(37):562-569
[7]	Zhang L S, Zhang X F, Liu Q, et al.Numerical Analysis of the Influences of Operational Parameters on the Braking Effect of EMBr in a CSP Funnel-Type Mold[J].Metall. Mater. Trans. B, 2014, 1(45):295-306
[7]	Zhang L S, Zhang X F, Liu Q, et al.Numerical Analysis of the Influences of Operational Parameters on the Braking Effect of EMBr in a CSP Funnel-Type Mold[J].Metall. Mater. Trans. B, 2014, 1(45):295-306
[8]	徐绵广，刘和平，仇圣桃，等.电磁制动对漏斗形结晶器开浇过程影响的数值模拟[J].钢铁, 2014, 49(01):28-33
[8]	徐绵广，刘和平，仇圣桃，等.电磁制动对漏斗形结晶器开浇过程影响的数值模拟[J].钢铁, 2014, 49(01):28-33
[9]	张静, 王恩刚, 邓安元, 赫冀成.大方坯连铸-参数对磁场和流场分布的影响[J].钢铁, 2012, 47(06):27-54
[9]	张静, 王恩刚, 邓安元, 赫冀成.大方坯连铸-参数对磁场和流场分布的影响[J].钢铁, 2012, 47(06):27-54
[10]	王亚涛，杨振国，刘青, 等.电磁搅拌对大方坯结晶器流场和液面波动的影响[J].北京科技大学学报, 2014, 36(10):1354-1360
[10]	王亚涛，杨振国，刘青, 等.电磁搅拌对大方坯结晶器流场和液面波动的影响[J].北京科技大学学报, 2014, 36(10):1354-1360
[11]	刘中秋，齐凤升，李宝宽，等.板坯连铸结晶器内渣金界面非稳态波动行为[J].东北大学学报, 2014, 12(35):1733-1737
[11]	刘中秋，齐凤升，李宝宽，等.板坯连铸结晶器内渣金界面非稳态波动行为[J].东北大学学报, 2014, 12(35):1733-1737
[12]	李壮，徐宇，王恩刚.板坯电磁连铸结晶器内钢渣界面波动及流动行为的数值模拟[J].连铸, 2016, 41(02):1-8
[12]	李壮，徐宇，王恩刚.板坯电磁连铸结晶器内钢渣界面波动及流动行为的数值模拟[J].连铸, 2016, 41(02):1-8
[13]	He M L, Wang N, Chen M, el at.Physical and Numerical Simulation of the Fluid Flow and Temperature Distribution in Bloom Continuous Casting Mold[J].Steel Res. int., 2017, 9(87):1-10
[13]	He M L, Wang N, Chen M, el at.Physical and Numerical Simulation of the Fluid Flow and Temperature Distribution in Bloom Continuous Casting Mold[J].Steel Res. int., 2017, 9(87):1-10
[14]	Zhao H M, Wang X H, Zhang J M.Effect of SEN Structure on the Mold Level Fluctuation and Heat Transfer for a Medium Thin Slab Caster[J].Journal of University of Science and Technology Beijing, 2008, 02(15):120-124
[14]	Zhao H M, Wang X H, Zhang J M.Effect of SEN Structure on the Mold Level Fluctuation and Heat Transfer for a Medium Thin Slab Caster[J].Journal of University of Science and Technology Beijing, 2008, 02(15):120-124
[15]	Yuan Q, Thomas B.G,et alStudy of Transient Flow and Particle Transport in Continuous Steel Caster Molds: Part II. Particle transport[J].Metall. Mater. Trans. B, 2004, 35(4):703-714
[15]	Yuan Q, Thomas B.G,et alStudy of Transient Flow and Particle Transport in Continuous Steel Caster Molds: Part II. Particle transport[J].Metall. Mater. Trans. B, 2004, 35(4):703-714
[16]	Nie C P, Zhang X F, Liu Q, et al.Characteristics of Inclusion Motion and Accumulation in CSP Mold[J].ISIJ int., 2015, 8(55):1677-1683
[16]	Nie C P, Zhang X F, Liu Q, et al.Characteristics of Inclusion Motion and Accumulation in CSP Mold[J].ISIJ int., 2015, 8(55):1677-1683
[17]	吴光辉，唐海燕，程鹏飞，等.浸入式水口结构对 × 断面连铸结晶器内钢液流动行为的影响[J].炼钢, 2017, 33(04):31-38
[17]	吴光辉，唐海燕，程鹏飞，等.浸入式水口结构对 × 断面连铸结晶器内钢液流动行为的影响[J].炼钢, 2017, 33(04):31-38
[18]	Launder B E, Spalding D B.The Numerical Computation of Turbulence Flow[J].Computer Methods in Applied Mechanics and Engineering, 1974, 2(3):269-289
[18]	Launder B E, Spalding D B.The Numerical Computation of Turbulence Flow[J].Computer Methods in Applied Mechanics and Engineering, 1974, 2(3):269-289
[19]	Yang H L, Zhang X Z, Deng K W, et al.Mathematical Simulation on Coupled Flow,Heat,and Solute Transport in Slab Continuous Casting Process[J].Metall. Mater. Trans. B, 1998, 6(29):1345-1356
[19]	Yang H L, Zhang X Z, Deng K W, et al.Mathematical Simulation on Coupled Flow,Heat,and Solute Transport in Slab Continuous Casting Process[J].Metall. Mater. Trans. B, 1998, 6(29):1345-1356
[20]	Liu H P, Xu M G, Qiu S T, et al.Numerical Simulation of Fluid Flow in a Round Bloom Mold with In-Mold Rotary Electromagnetic Stirring[J].Metall. Mater. Trans. B, 2012, 6(43):1657-1675
[20]	Liu H P, Xu M G, Qiu S T, et al.Numerical Simulation of Fluid Flow in a Round Bloom Mold with In-Mold Rotary Electromagnetic Stirring[J].Metall. Mater. Trans. B, 2012, 6(43):1657-1675
[21]	王楠，邹宗树.钢铁冶金过程数学模型[M]. 北京:科学出版社，2011.
[21]	王楠，邹宗树.钢铁冶金过程数学模型[M]. 北京:科学出版社，2011.
[22]	王亚涛.大方坯结晶器电磁搅拌三维流动和传热数值模拟研究[D]. 北京：北京科技大学，2013.
[22]	王亚涛.大方坯结晶器电磁搅拌三维流动和传热数值模拟研究[D]. 北京：北京科技大学，2013.
[23]	毛斌，张桂芳，李爱武.连续铸钢用电磁搅拌的理论与技术[M]. 北京:冶金工业出版社，2012.
[23]	毛斌，张桂芳，李爱武.连续铸钢用电磁搅拌的理论与技术[M]. 北京:冶金工业出版社，2012.