Numerical Modeling of the Macrosegregation Improvement in Continuous Casting Blooms by Using F-EMS

A three-dimensional mathematic model based on segmentation that joins the electromagnetic field, melt flow, heat transfer, solidification and solute transport in the whole casting domain has been established to study the solute transport at the final stage of solidification in a bloom continuous cas...

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Bibliographic Details
Published in:JOM (1989) 2020-11, Vol.72 (11), p.4117-4126
Main Authors: Li, Shaoxiang, Han, Zhiqiang, Zhang, Jiaquan
Format: Article
Language:English
Subjects:
Blooms (metal)
Carbon
Chemistry/Food Science
Continuous casting
Cooling
Earth Sciences
Electromagnetic fields
Electromagnetic stirring
Electromagnetism
Engineering
Environment
Heat transfer
Levitation casting
Physics
Reynolds number
Segmentation
Solidification
Solidification Behavior in the Presence of External Fields
Solids
Three dimensional models
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Summary:A three-dimensional mathematic model based on segmentation that joins the electromagnetic field, melt flow, heat transfer, solidification and solute transport in the whole casting domain has been established to study the solute transport at the final stage of solidification in a bloom continuous casting process. The effects of the final electromagnetic stirring (F-EMS) positions on the macrosegregation degree of the as-cast bloom are compared and analyzed. The results show that the maximum carbon segregation degree, the ratio of the local carbon concentration to the initial carbon concentration, is reduced from 1.292 to 1.254 with the application of F-EMS. In addition, the position of F-EMS is also an important factor. The maximum carbon segregation degrees are 1.254, 1.237 and 1.269 when the installation location of F-EMS is 14 m, 16 m and 18 m away from the meniscus, respectively. The optimal center solid fraction is about 0.1 at the F-EMS center for this study.
ISSN:1047-4838
1543-1851
DOI:10.1007/s11837-020-04363-6