| Effect of Electromagnetic Stirring on Molten Steel Flow and Solidification in Bloom Mold |
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| 作者姓名： | Zhen-guo YANG Bao WANG Xiao-feng ZHANG Ya-tao WANG Hong-biao DONG Qing LIU |
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| 作者单位： | State Key Laboratory of Advanced Metallurgy,University of Science and Technology Beijing;Special Steel Plant,Laiwu Iron and Steel Co.,Ltd.;Department of Engineering,University of Leicester,Leicester LE1 7RH,UK |
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| 基金项目： | Sponsored by National Natural Science Foundation of China(51074023) |
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| 摘 要： | The effect of electromagnetic stirring on molten steel flow and heat transfer in a 260 mm× 300 mm bloom mold was investigated by using a method combining both finite element method and finite volume method. The simu lation results related to magnetic fields were consistent with the onsite measured data. The magnetic flux density in creased with increasing the current intensity but decreased with increasing the current frequency. Electromagnetic stirring caused molten steel to flow with rotation on a horizontal section and two sets of recirculation regions with opposite fellow directions in a longitudinal section formed. The maximum tangential velocity increased with increasing the current intensity and frequency. Furthermore, the superheat degree of the molten steel on the outlet cross section of the mold decreased with increasing the current intensity. growth zone of solidified shell in the effective stirring zone. bearing steel, the appropriate values of current intensity and to be 300 A and 3 Hz, respectively. Electromagnetic stirring caused the emergence of a zero For the 260 mm N 300 mm bloom continuous caster of current frequency of electromagnetic stirring were found
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| 关 键 词： | 电磁搅拌 钢水流动 凝固壳 模具 液流量 电流强度 拌和 纵向截面 |
| 收稿时间： | 25 March 2014 |
Effect of Electromagnetic Stirring on Molten Steel Flow and Solidification in Bloom Mold |
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| Zhen-guo YANG,Bao WANG,Xiao-feng ZHANG,Ya-tao WANG,Hong-biao DONG,Qing LIU.Effect of Electromagnetic Stirring on Molten Steel Flow and Solidification in Bloom Mold[J].Journal of Iron and Steel Research,2014,21(12):1095-1103. |
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| Authors: | Zhen-guo YANG Bao WANG Xiao-feng ZHANG Ya-tao WANG Hong-biao DONG Qing LIU |
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| Abstract: | The effect of electromagnetic stirring on molten steel flow and heat transfer in a 260 mm×300 mm bloom mold was investigated by using a method combining both finite element method and finite volume method. The simulation results related to magnetic fields were consistent with the onsite measured data. The magnetic flux density increased with increasing the current intensity but decreased with increasing the current frequency. Electromagnetic stirring caused molten steel to flow with rotation on a horizontal section and two sets of recirculation regions with opposite reflow directions in a longitudinal section formed. The maximum tangential velocity increased with increasing the current intensity and frequency. Furthermore, the superheat degree of the molten steel on the outlet cross section of the mold decreased with increasing the current intensity. Electromagnetic stirring caused the emergence of a zero growth zone of solidified shell in the effective stirring zone. For the 260 mm × 300 mm bloom continuous caster of bearing steel, the appropriate values of current intensity and current frequency of electromagnetic stirring were found to be 300 A and 3 Hz, respectively. |
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| Keywords: | bloom mold electromagnetic stirring flow heat transfer numerical simulation bearing steel |
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