|
|
|
| Effect of electromagnetic stirring position on liquid steel flow and liquid level fluctuation in continuous casting mold for wide-thick slab |
| HE Jian-guo1,2, DENG An-yuan1,2, XU Xiu-jie1,2, WANG En-gang1,2 |
1. Key Laboratory of Materials Electromagnetic Process Research, Ministry of Education, Northeastern University, Shenyang 110004, Liaoning, China;
2. School of Metallurgy, Northeastern University, Shenyang 110004, Liaoning, China |
|
|
|
|
Abstract To reasonably control the flow of liquid steel and the fluctuation of liquid level in the mold of wide-thick slab and improve the quality of slab. The flow and level fluctuation behavior of molten steel in a 2 200 mm×250 mm continuous casting mold was studied by numerical simulation. The effects of electromagnetic stirring position on the flow and liquid level fluctuation were investigated. The results show that the electromagnetic stirring can enhance the flow of molten steel in the upper reflux area, which is beneficial to uniform composition and temperature of molten steel. The electromagnetic stirring can increase the speed of the molten steel near the nozzle by about 0.04 m/s, and fully enhance the stirring of the molten steel near the nozzle. With the stirring position moving upward, the horizontal swirl flow generated by the electromagnetic stirring can enhance the speed of the downward flow, as a result the position of the lower vortex center in the molten pool moves up. The electromagnetic force promotes the horizontal flow of molten steel, which deflects the upward flow and weakens the speed of the upward flow which can reduce the impact of upward flow on the liquid level and the fluctuation of the liquid level. Raising the position of the electromagnetic stirrer is helpful to control the fluctuation of the liquid level. When the center position of the electromagnetic stirrer is Y=-0.1 m, the liquid level fluctuation can be reduced from 7.5 mm to less than 3 mm, which can reduce the occurrence of slag entrainment, and the flow field still maintains a good symmetry.
|
|
Received: 19 April 2022
|
|
|
|
| [1] |
马建民. 80号钢连铸坯末端电磁搅拌优化与实践[J]. 中国冶金, 2021, 31(2): 72.
|
| [2] |
牛亮,赵俊学,仇圣桃, 等. 偏心M-EMS作用下连铸圆坯流动-传热模拟[J]. 钢铁, 2020, 55(9): 49.
|
| [3] |
胡亮, 郭红民, 段少平. 凝固末端电磁搅拌对82B碳偏析的影响[J]. 中国冶金, 2018, 28(9): 63.
|
| [4] |
LI X L, LI B K, LIU Z Q, et al. Large eddy simulation of electromagnetic three-phase flow in a round bloom considering solidified shell[J]. Steel Research International, 2019, 90(4):1800133.
|
| [5] |
Toh T, Hasegawa H, Harada H. Evaluation of multiphase phenomena in mold pool under in-mold electromagnetic stirring in steel continuous casting[J]. ISIJ International, 2001, 41(10): 1245.
|
| [6] |
李向龙,刘中秋,牛冉, 等.大涡模拟结晶器电磁搅拌下的三相流动及凝固[C]//第十一届中国钢铁年会论文集—S02炼钢与连铸. 北京:中国金属学会,2017:184.
|
| [7] |
Rywotycki M, Malinowaki Z, Gielzecki J, et al. Modelling liquid steel motion caused by electromagnetic syirring in continuous CASTING steel process[J]. Arch Metall Mater, 2014, 59(2): 487.
|
| [8] |
SONG X P, CHENG S S, CHENG Z J. Mathematical modelling of billet casting with secondary cooling zone electromagnetic stirrer[J]. Ironmaking and Steelmaking, 2013, 40(3): 189.
|
| [9] |
Maurya A, Jha P K. Numerical investigation of in-mold electromagnetic stirring process for fluid flow and solidification[J]. Compel-Int J Comp Math Electr Electron Eng, 2017, 36(4): 1106.
|
| [10] |
潘鹏, 侯栋, 戈文英, 等. 连铸坯凝固末端电磁搅拌位置及连铸工艺优化[J]. 连铸, 2022(2): 66.
|
| [11] |
张静,杨龙,吴会平, 等. 电磁搅拌作用下电流强度对结晶器内液面波动的影响[J]. 铸造技术, 2016, 37(1): 75.
|
| [12] |
石红燕, 吴春雷, 刘利, 等. 电磁旋流水口对圆坯结晶器液面波动的控制[J]. 连铸, 2021(6): 24.
|
| [13] |
FANG Q, NI H W, ZHANG H, et al. The effects of a submerged entry nozzle on flow and initial solidification in a continuous casting bloom mold with electromagnetic stirring[J]. Metals, 2017, 7(4): 7040146.
|
| [14] |
LIU G, LU H, LI B, et al. Influence of M-EMS on fluid flow and initial solidification in slab continuous casting[J]. Materials, 2021, 14(13): 14133681.
|
| [15] |
YIN Y, ZHANG J, LEI S, et al. Numerical study on the capture of large inclusion in slab continuous casting with the effect of in-mold electromagnetic stirring[J]. ISIJ International, 2017, 57(12): 2165.
|
| [16] |
LI B, LU H, ZHONG Y, et al. Numerical simulation for the influence of EMS position on fluid flow and inclusion removal in a slab continuous casting mold[J]. ISIJ International, 2020, 60(6): 1204.
|
| [17] |
WANG X, ZHENG S G, LIU Z H, et al. Numerical simulation on multiple physical fields behaviors in billet continuous casting with different stirrer positions[J]. Steel research international, 2020, 91(2): 201900415.
|
| [18] |
YIN Y B, ZHANG J M, WANG B, et al. Effect of in-mould electromagnetic stirring on the flow, initial solidification and level fluctuation in a slab mould: A numerical simulation study[J]. Ironmaking and Steelmaking, 2019, 46(7): 682.
|
| [19] |
YANG Z G, WANG B, ZHANG X F, et al. Effect of electromagnetic stirring on molten steel flow and solidification in bloom mold[J]. Journal of Iron and Steel Research, International, 2014, 21(12): 1095.
|
| [20] |
安文,刘中秋,李向龙, 等.电磁搅拌下板坯连铸结晶器内的瞬态三相流动[C]//第十二届中国钢铁年会论文集. 北京:中国金属学会,2019:338.
|
| [21] |
YANG B, DENG A Y, LI Y, et al. Numerical simulation of flow and solidification in continuous casting process with mold electromagnetic stirring[J]. Journal of Iron and Steel Research, International, 2019, 26(3): 219.
|
| [22] |
李玉刚,何宇明,袁广英, 等. 宽厚板结晶器钢液流场优化的水模实验研究[C]//2012年全国炼钢—连铸生产技术会论文集. 重庆: 中国金属学会,2012.
|
| [23] |
黄诚,李晓谦,陈平虎, 等. 宽厚板坯连铸结晶器流场,温度场及应力场的耦合数值模拟[J]. 工程科学学报, 2016, 38(8): 1098.
|
| [24] |
Kunstreich S, Dauby P H. Effect of liquid steel flow pattern on slab quality and the need for dynamic electromagnetic control in the mould[J]. Ironmaking and Steelmaking, 2005, 32(1): 80.
|
| [25] |
蔡开科, 程士富. 连续铸钢原理与工艺[M]. 北京: 冶金工业出版社, 1994.
|
| [1] |
ZHU Chunli，ZHANG Longfei，SU Yunlong，CHANG Lizhong,SHI Xiaofang. Effect of electromagnetic stirring on inclusions in 304 stainless steel electroslag ingot[J]. JOURNAL OF IRON AND STEEL RESEARCH , 2022, 34(9): 933-943. |
| [2] |
KANG Yong-lin, ZHU Guo-ming, JIANG Min, WANG Guo-lian, LIU Peng-tao, XU Hai-wei, XIE Cui-hong, WEI Yun-fei, SHEN Kai-zhao, LIU Yang. Slab continuous casting by big roll heavy reduction and extra thick plate rolled by low compression ratio[J]. Iron and Steel, 2022, 57(7): 95-105. |
| [3] |
SUN Ren-bao, MA Jun-peng, WANG Wei, CHEN Fa-tao, LI Xiao-jun. Application of combined electromagnetic stirring in ferritic stainless steel[J]. CONTINUOUS CASTING, 2022, 41(5): 10-16. |
| [4] |
MA Ming, ZHENG Xu-tao, YU Yao, WANG Shi, TIAN Zhen, XIE Qing-hua. Simulation of the effect of EMBr on the dynamic behavior of molten steel in thin slab with high casting speed[J]. CONTINUOUS CASTING, 2022, 41(5): 17-22. |
| [5] |
ZHAO Zhan-shan, WANG Shi, REN Tao, LI Yi, ZHANG Zhong-fu, WANG Qing. Flow field simulation and optimization of multi-strand tundish[J]. CONTINUOUS CASTING, 2022, 41(5): 23-29. |
| [6] |
ZHAO Xin-kai, TIAN Feng-xi, GAO Wen-juan, ZHANG Ying-tao, MAO Fu-lai, ZHANG Jiong-ming. Behavior analysis of non-metallic inclusion groups in bearing steel during bloom casting[J]. CONTINUOUS CASTING, 2022, 41(5): 50-61. |
|
|
|
|
2022, Vol. 41 
