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连铸终了电磁搅拌下凝固壳电导率和铸坯尺寸对磁场影响的数值模拟

Numerical Simulation of the Effect of Solidified Shell Conductivity and Billet Sizes on the Magnetic Field with Final Electromagnetic Stirring in Continuous Casting.

作者信息

Xu Guofang, Tan Ruisong, Song Bo, Liu Wei, Yang Shufeng, Zuo Xiaotan, Huang Yan

机构信息

Metallurgical and Ecological Engineering School, University of Science and Technology Beijing, Beijing 100083, China.

Steelmaking Department, Wuhu Xinxing Ductile Pipe Co., Ltd., Wuhu 241002, China.

出版信息

Materials (Basel). 2023 Jul 1;16(13):4765. doi: 10.3390/ma16134765.

DOI:10.3390/ma16134765
PMID:37445079
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10343188/
Abstract

Coupled with the results of a 2D heat transfer model, a 3D electromagnetic stirring round billet model is developed, which is considered for the difference in the conductivity of solidified shell and molten steel. The electromagnetic field distribution features of the billet and the effect of round billet sizes on the electromagnetic field are investigated. It is found that as the solidified shell conductivity of the Φ600 mm round billet increases from 7.14 × 10 S·m to 1.0 × 10 S·m, the magnetic induction intensity decreases and the maximum value of electromagnetic force drops from 7976.26 N·m to 5745.32 N·m. The magnetic induction intensity on the center axis of the stirrer rarely changes in the range of Φ100-Φ200 mm. With the increase in the round billet from Φ300 mm to Φ600 mm, the magnetic induction intensity and the electromagnetic force on the center axis of the stirrer decrease slowly and then significantly. In the range of 2-8 Hz, as the current strength reaches its maximum, the electromagnetic force can be increased by increasing the current frequency for round billets of Φ100-Φ500 mm, while there is an optimal current frequency for round billets larger than Φ600 mm.

摘要

结合二维传热模型的结果，建立了三维电磁搅拌圆坯模型，该模型考虑了凝固坯壳和钢液电导率的差异。研究了圆坯的电磁场分布特性以及圆坯尺寸对电磁场的影响。研究发现，对于直径600mm的圆坯，当凝固坯壳电导率从7.14×10 S·m增加到1.0×10 S·m时，磁感应强度降低，电磁力最大值从7976.26N·m降至5745.32N·m。搅拌器中心轴上的磁感应强度在直径100 - 200mm范围内变化很小。随着圆坯直径从300mm增加到600mm，搅拌器中心轴上的磁感应强度和电磁力先缓慢下降，然后显著下降。在2 - 8Hz范围内，当电流强度达到最大值时，对于直径100 - 500mm的圆坯，通过增加电流频率可提高电磁力，而对于直径大于600mm的圆坯存在一个最佳电流频率。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2289/10343188/3ec7808ace20/materials-16-04765-g014.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2289/10343188/49c0c16882c7/materials-16-04765-g001.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2289/10343188/6b42726879ea/materials-16-04765-g009a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2289/10343188/c82344c3081b/materials-16-04765-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2289/10343188/31a6770910f1/materials-16-04765-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2289/10343188/a16bbad7b040/materials-16-04765-g012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2289/10343188/2c355dac348f/materials-16-04765-g013a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2289/10343188/3ec7808ace20/materials-16-04765-g014.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2289/10343188/49c0c16882c7/materials-16-04765-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2289/10343188/906825184862/materials-16-04765-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2289/10343188/7c29e164d7d4/materials-16-04765-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2289/10343188/76964eb47f72/materials-16-04765-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2289/10343188/fd8faf1fbbe6/materials-16-04765-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2289/10343188/89603e96cf37/materials-16-04765-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2289/10343188/dadba3aed919/materials-16-04765-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2289/10343188/1d9652902c9c/materials-16-04765-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2289/10343188/6b42726879ea/materials-16-04765-g009a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2289/10343188/c82344c3081b/materials-16-04765-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2289/10343188/31a6770910f1/materials-16-04765-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2289/10343188/a16bbad7b040/materials-16-04765-g012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2289/10343188/2c355dac348f/materials-16-04765-g013a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2289/10343188/3ec7808ace20/materials-16-04765-g014.jpg

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