立式行波磁场作用下板坯连铸过程金属液流动与渣金界面动力学行为模拟分析

许琳; 裴群武; 高兢

doi:10.7513/j.issn.1004-7638.2025.05.006

立式行波磁场作用下板坯连铸过程金属液流动与渣金界面动力学行为模拟分析

doi: 10.7513/j.issn.1004-7638.2025.05.006

许琳^1,,
裴群武²,
高兢^3, ,

1.
沈阳工程学院, 能源动力与核技术工程学院, 辽宁沈阳 110316
2.
沈阳汇力智能科技有限公司, 辽宁沈阳 110043
3.
沈阳工程学院, 电气工程学院, 辽宁沈阳 110316

基金项目: 沈阳市科技人才专项资助项目(RC230046)；辽宁省科技厅面上项目(2025-MS-288)。

详细信息

作者简介:
许琳，女，1989年出生，黑龙江人，博士，副教授，主要从事电磁流体力学工作。E-mail：lin_xu1989@163.com

通讯作者:
高兢，性别：女，1983年出生，辽宁人，硕士，副教授，主要从事磁流体仿真工作。E-mail：xulin1@sie.edu.cn

中图分类号: TF777.1,TP391.9
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- 文章访问数: 24
- HTML全文浏览量: 8
- PDF下载量: 6
- 被引次数: 0
出版历程
- 收稿日期: 2025-08-18
- 录用日期: 2025-08-29
- 修回日期: 2025-08-29
- 刊出日期: 2025-10-30

Numerical simulation of the influence of vertical traveling wave magnetic field on the behavior of molten steel flow and steel slag interface fluctuation in a continuous casting slab mold

XU Lin^1
,,
PEI Qunwu²,
GAO Jing^{3
, ,}

1.
Shenyang Institute of Engineering, School of Energy, Power, and Nuclear Engineering, Shenyang 110136, Liaoning, China
2.
Shenyang Hui Li Intelligent Technology Co., Ltd., Shenyang 110136, Liaoning, China
3.
Shenyang Institute of Engineering, School of Electrical Engineering, Shenyang 110136, Liaoning, China

摘要

摘要: 在绿色低碳发展趋势下，当代冶金工业追求高速高效连铸以促进可持续发展。鉴于此，提出一种立式行波磁场控流技术，旨在优化和控制金属液流动行为，克服现存技术局限，为连铸过程的绿色低碳转型提供理论依据和技术支持。研究过程以1450 mm×230 mm断面连铸板坯结晶器为对象，首先建立结晶器电磁连铸过程三维多物理场耦合数学模型，其次模拟研究无磁场、立式行波磁场及全幅一段水平直流磁场作用下板坯连铸结晶器内金属液流动与渣金界面行为，最后对比评价两种磁场形式对结晶器内钢液流动控制效果的影响。结果表明，无磁场作用时，渣金界面最大高度为22.3 mm；当全幅一段电磁制动器施加的电流为1350 A时，渣金界面最大高度降至18.6 mm；而当立式行波磁场减速器施加的电流仅为600 A时，渣金界面最大高度显著降至13.9 mm。可见，相较于全幅一段电磁制动器，立式行波磁场控流器能以更低能耗实现对结晶器内上回流区钢液流动的有效控制，从而稳定渣金界面波动，防止表面卷渣。
- 结晶器 /
- 行波磁场 /
- 电磁制动 /
- 渣金界面
Abstract: With the trend of green and low carbon development, the contemporary metallurgical industry pursues high-speed and high-efficiency continuous casting to promote sustainable development. In view of this, a vertical traveling wave magnetic field flow control technology is proposed to optimize and control the flow behavior of liquid metal during continuous casting and overcome the existing technical limitations. The proposed flow control technology can provide theoretical basis and technical support for the green and low-carbon transformation of continuous casting process. In the current research, a 1450 mm × 230 mm continuous casting slab mold is taken as a research object. Firstly, a three-dimensional multi-physical field coupling mathematical model is established for describing the electromagnetic continuous casting process. Secondly, the behaviors of molten steel flow and the steel-slag interface within the slab continuous casting mold under conditions of free magnetic field, vertical traveling wave magnetic field, and single ruler horizontal direct current magnetic field are simulated and investigated. Finally, the effects of these two magnetic field forms on the flow control of molten steel in the mold are compared and evaluated. The results indicate that, in the absence of the magnetic field, the maximum height of the steel-slag interface is 22.3 mm. When applied the current via the single ruler horizontal electromagnetic brake is 1350 A, the maximum height decreases to 18.6 mm. In comparison, when the vertical traveling wave magnetic field reducer applies a current of only 600 A, the maximum height of the steel-slag interface is significantly decreased to 13.9 mm. Based on the results, it can be concluded that the vertical traveling wave magnetic field reducer has more significant flow control advantages than the single ruler horizontal electromagnetic brake with lower energy consumption. The directional electromagnetic force generated by the vertical traveling wave magnetic field can effectively suppress the flow of molten steel in the upper recirculation zone of the mold and stabilize the fluctuation of the steel-slag interface.
- mold /
- traveling wave magnetic field /
- electromagnetic braking /
- steel-slag interface

HTML全文

图 1 板坯连铸结晶器模型示意

(a) 网格模型；(b) 几何模型

Figure 1. Schematic model of slab continuous casting mold

下载: 全尺寸图片幻灯片

图 2 立式行波磁场控流装置和全幅一段电磁制动控流装置几何模型示意

(a) 立式行波磁场控流装置；(b) 全幅一段电磁制动控流装置

Figure 2. Schematic diagram of the geometric model for a vertical traveling wave magnetic field flow control device and a Ruler-EMBr flow control device

下载: 全尺寸图片幻灯片

图 3 结晶器内洛伦兹力分布

(a) 洛伦兹力矢量分布；(b) 洛伦兹力云图分布

Figure 3. Distribution of Lorentz force in the mold

下载: 全尺寸图片幻灯片

图 4 结晶器中心截面钢液速度分布

(a) 无磁场；(b) 全幅一段水平直流磁场；(c) 立式行波磁场

Figure 4. Distribution of molten steel velocity in the central section of wide face in the mold

下载: 全尺寸图片幻灯片

图 5 结晶器内钢液速度等值面分布

(a) 无磁场；(b) 全幅一段水平直流磁场；(c) 立式行波磁场

Figure 5. Iso-surface distribution of molten steel velocity in the mold

下载: 全尺寸图片幻灯片

图 6 结晶器渣金界面处钢液速度分布

(a) 无磁场；(b) 全幅一段水平直流磁场；(c) 立式行波磁场

Figure 6. Steel-slag interface velocity distribution of molten steel in the mold

下载: 全尺寸图片幻灯片

图 7 结晶器钢液表面流速分布和湍动能强度分布

(a) 钢液表面速度；(b) 钢液运动湍动能

Figure 7. Distribution of surface velocity and turbulent kinetic energy of molten steel in the mold

下载: 全尺寸图片幻灯片

图 8 结晶器内渣金界面三维波动特性分布

(a) 无磁场；(b) 全幅一段水平直流磁场；(c) 立式行波磁场

Figure 8. Distribution of 3-D fluctuation characteristics of steel-slag interface fluctuation in the mold

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图 9 结晶器中心截面处渣金界面波动高度

Figure 9. Steel-slag interface fluctuation height in the central section of wide surface in the mold

下载: 全尺寸图片幻灯片

图 10 不同磁场作用下结晶器内渣金界面动力学行为比较

Figure 10. Comparison of the dynamic behavior of steel-slag interface in the mold under different magnetic field conditions

下载: 全尺寸图片幻灯片

图 11 结晶器内渣金界面整体平均波动高度

Figure 11. Average vertical displacement fluctuation of the steel-slag interface in the mold

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图 12 结晶器内渣金界面速度均匀性指数

Figure 12. Velocity distribution uniformity index across the steel-slag interface in the mold

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图 13 不同磁场作用下结晶器内渣金界面稳定性评价

Figure 13. Stability evaluation of the steel-slag interface in the mold under different magnetic field conditions

下载: 全尺寸图片幻灯片

表 1 板坯结晶器计算参数

Slab cross section/mm × mm	Mold effective height/mm	Computational domain/mm	SEN exit cross section/mm
1450×230	800	4000	65×80

SEN depth/mm	Nozzle cavity/mm	Casting speed/(m∙min^‒1)	Steel density/(kg∙m^‒3)
170	80	1.8	7020

Steel viscosity/(Pa∙s)	Steel conductivity/(S∙m^‒1)	Steel permeability/(H∙m^‒1)	Liquid steel density/(kg∙m^‒3)
0.0062	7.14×10⁵	1.26×10⁶	3500

Surface tension/(N∙m^‒1)	Traveling wave magnetic field current/A	Traveling wave magnetic field frequency/Hz	Direct current magnetic field/A
1.2	600	3	1350

下载: 导出CSV

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