Issue |
Metall. Res. Technol.
Volume 122, Number 4, 2025
|
|
---|---|---|
Article Number | 412 | |
Number of page(s) | 17 | |
DOI | https://doi.org/10.1051/metal/2025037 | |
Published online | 18 June 2025 |
Original Article
Influence of electromagnetic stirring on the flow field and argon bubble distribution in the continuous casting mold of slab based on high-temperature online measurement of flow velocity near the mold surface
1
State Key Laboratory of Advanced Special Steel, School of Materials Science and Engineering, Shanghai University, Shanghai 200444, PR China
2
Beijing Shougang Co., Ltd., Tangshan, Hebei 064400, PR China
3
Shougang Qiangang Iron and Steel Co., Ltd., Tangshan, Hebei 064400, PR China
* e-mail: yang_jian@t.shu.edu.cn
Received:
30
December
2024
Accepted:
7
May
2025
A coupling model of the flow field, initial solidification, alternating magnetic field (AM-field) and movement of argon bubble in the mold was established by combining the k-ε turbulence model with solidification model, Discrete Phase Model (DPM), Volume of Fluid (VOF) model and magnetohydrodynamics model. The industrial measured magnetic flux density (MFD) is consistent with the calculated MFD at a 15 mm interval from the wide wall, which verifies the reliability of the magnetic field model calculation. As the electromagnetic stirring (EMS) current intensity (EMSCI) grows, the calculated velocity of molten steel at 1/4 of the width direction of the mold surface decreases, which coincides well with measurement results. In addition, as the EMSCI is increased, the upper roll flow weakens, the horizontal rotational flow increases. The thickness of the solidified shell in the lower part of the narrow wall is increased due to the decreased impact force of the molten steel on the solidified shell of the narrow wall caused by the upward movement of the circulating flow. The volume fraction of argon bubbles around the SEN further decreases, and the distribution of them becomes more dispersed. Based on the research results, the optimal EMSCI under the present operating conditions is recommended as 700 A.
Key words: mold / electromagnetic stirring / high-temperature online velocity measurement / solidification shell / argon bubble distribution
© EDP Sciences, 2025
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.