Melting and Flowing Behavior of Mold Flux in a Continuous Casting Billet Mold for Ultra-High Speed

High casting speed coincides with the development trend of billet continuous casting, which significantly changes the casting characteristics. A mathematical model of the billet mold, which includes multiphase fluid flow, transient heat transfer, and solidification during ultra-high speed of the cas...

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Bibliographic Details
Published in:Metals (Basel ) 2020-09, Vol.10 (9), p.1165
Main Authors: Yang, Jie, Chen, Dengfu, Qin, Fengting, Long, Mujun, Duan, Huamei
Format: Article
Language:English
Subjects:
Behavior
Billet casting
billet mold
Computational fluid dynamics
Continuous casting
Design optimization
Flow velocity
Fluid flow
Flux
Heat conductivity
Heat transfer
High speed
Mathematical models
Melt temperature
Melting
mold flux
Mold fluxes
Solidification
Surface tension
Temperature
Transient heat transfer
ultra-high casting speed
Viscosity
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Summary:High casting speed coincides with the development trend of billet continuous casting, which significantly changes the casting characteristics. A mathematical model of the billet mold, which includes multiphase fluid flow, transient heat transfer, and solidification during ultra-high speed of the casting process was developed. The model is first applied to investigate the flow field of molten steel in the mold, studying the influence of steel flow upon the melting and flowing behavior of mold flux. The temperature and velocity distributions of the flux pool that formed above the molten steel surface are described. A parametric study on the melting temperature and viscosity of mold flux on liquid flux thickness and flow velocity is then carried out. Finally, the model is used to derive the relationship between interfacial tension and level fluctuations. The predictions provide an improved understanding of the melting and flowing behavior of mold flux in the billet mold and give the guidance for the design and optimization of mold flux for ultra-high speed of billet casting.
ISSN:2075-4701
2075-4701
DOI:10.3390/met10091165