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

Yang, Jie; Chen, Dengfu; Qin, Fengting; Long, Mujun; Duan, Huamei

doi:10.3390/met10091165

Cited by 9 publications

(2 citation statements)

References 24 publications

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“…Previous studies have reported flow‐heat transfer‐related phenomena in mold. Chen et al simulated the effect of casting speed, [ 14 ] SEN parameters [ 15 ] and mold flux properties [ 16 ] on the flow and heat transfer behaviors of mold molten steel and mold flux by establishing a 3D mathematical model and physical hydraulic experiment. [ 17 ] Sadat et al [ 18 ] investigated the effects of casting speed on the flow, heat transfer, and solidification in a mold by developing a 3D simulation.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of the Fluid Flow, Heat Transfer, and Solidification in Ultrahigh Speed Continuous Casting Billet Mold

Zhang

et al. 2022

steel research int.

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Ultrahigh-speed casting is the most remarkable feature of billet high-efficiency continuous casting. The transient fluid flow, heat transfer, and solidification behavior under different casting speeds, submerged entry nozzle (SEN) parameters, and mold electromagnetic stirring (M-EMS) are investigated using a 3D transient mathematical model. The results show that a typical roll flow pattern is generated for all casting speeds, while a third small recirculation zone developed near the solidified shell at the casting speed of 6.0 m min À1 . When the casting speed increases, the impact depth of the molten steel increases from 0.748 to 0.844 m, the velocity and level fluctuation at the steel/slag interface increases, the high-temperature zone moves downward, and the shell thickness is reduced from 16.2 to 11.1 mm. As the SEN inner diameter and immersion depth increases, the impact depth increases, the velocity and level fluctuation at the steel/slag interface decreases, and the shell thickness at the mold exit is %11.0 mm. When the SEN immersion depth and inner diameter are 120 and 40 mm, respectively, the flow and temperature fields in the mold are the most appropriate. In addition, the M-EMS have a great effect on the fluid flow and heat transfer behavior.

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Section: Introductionmentioning

confidence: 99%

Numerical Simulation of the Fluid Flow, Heat Transfer, and Solidification in Ultrahigh Speed Continuous Casting Billet Mold

Zhang

et al. 2022

steel research int.

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“…It is very important to choose the appropriate melting point of mold flux, which has great influence on the efficiency of the continuous casting process. When the melting point of the mold flux is too large, the liquid flux layer may be too thin, and the steel leakage accident may occur [20][21][22][23] . The melting point of the mold flux can be changed by adjusting the type and content of mineral raw materials.…”

Section: Results and Discussion 31 Effect Of Mineral Raw Materials On...mentioning

confidence: 99%

Effects of Mineral Raw Materials on Melting and Crystalline Properties of Mold Flux and Mineralogical Structures of Flux Film for Casting Peritectic Steel Slab

et al. 2023

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During peritectic steel continuous casting, mold flux properties and flux film structures play significant roles in controlling slab quality. In this study, mold fluxes and flux films for casting peritectic steel slab were obtained using mineral raw materials such as quartz, wollastonite, fluorite, soda ash and others. The effects of mineral raw materials on mold flux properties and flux film structures were investigated through the measurement of melting point, viscosity, crystallization temperature, critical cooling rate, crystallization ratio and crystalline phase content. The results indicated that with increasing the quartz addition (16 to 24 mass%) and the wollastonite addition (11 to 19 mass%) in mineral raw materials, the melting point, viscosity and wollastonite content of flux film increased, while the crystallization temperature, critical cooling rate, crystallization ratio and cuspidine content of flux film decreased. The melting point, viscosity and wollastonite content of flux film reduced with increasing the fluorite addition (8 to 16 mass%) and soda ash addition (10 to 18 mass%) in mineral raw materials. Furthermore, compared with soda ash, the fluorite predominantly enhanced the crystallization temperature, critical cooling rate, crystallization ratio, cuspidine content of flux film. In addition, it was showed that the heat transfer performance and the slab quality might be primarily attribute to the crystallization ratio and cuspidine content of flux film. These results provided a theoretical foundation for optimizing the mold flux of the peritectic steel and were vital to improving the slab quality.

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Investigation on Heat Transfer in Molds with Different Water-Cooling Structures Under Billet High-Speed Continuous Casting

Pang

Zhou

Huang

et al. 2023

Metall Mater Trans B

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

Cited by 9 publications

References 24 publications

Numerical Simulation of the Fluid Flow, Heat Transfer, and Solidification in Ultrahigh Speed Continuous Casting Billet Mold

Numerical Simulation of the Fluid Flow, Heat Transfer, and Solidification in Ultrahigh Speed Continuous Casting Billet Mold

Effects of Mineral Raw Materials on Melting and Crystalline Properties of Mold Flux and Mineralogical Structures of Flux Film for Casting Peritectic Steel Slab

Investigation on Heat Transfer in Molds with Different Water-Cooling Structures Under Billet High-Speed Continuous Casting

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