Analysis of Meniscus Fluctuation in a Continuous Casting Slab Mold

Zhang, Kaitian; Liu, Jianhua; Cui, Heng; Xiao, Changfa

doi:10.1007/s11663-018-1236-5

Cited by 22 publications

(9 citation statements)

References 16 publications

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“…Then, the flow field velocity distributions in the mold were calculated by a DaVis software. More detailed parameters of the PIV measurement can be found in Zhang et al…”

Section: Methodsmentioning

confidence: 99%

Effect of Flow Field on Surface Slag Entrainment and Inclusion Adsorption in a Continuous Casting Mold

Zhang

Liu

Cui

2019

steel research int.

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A water model of slab mold was established to analyze the flow field behaviors. Particle image velocimetry measurement, fluctuation sensors, and industrial experiments were adopted to analyze the slag entrainment and inclusion adsorption. The risk of surface slag entrainment was discussed from the perspectives of flow patterns, surface fluctuation, and velocity. The ability of mold slag to adsorb inclusions was discussed by electrolysis on slab samples. The results reflected that the flow field determined the fluctuated amplitude, surface pattern and flow velocity of the mold surface, playing an important role in the slag entrainment and inclusion adsorption. Uneven surface fluctuations and downward vertical velocity lead to high slag entrapping risk. High surface horizontal velocity in mold leads to a higher inclusion concentration gradient at the slagsteel interface, which leads to a stronger ability of mold slag to adsorb inclusions.

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“…Then, the flow field velocity distributions in the mold were calculated by a DaVis software. More detailed parameters of the PIV measurement can be found in Zhang et al…”

Section: Methodsmentioning

confidence: 99%

Effect of Flow Field on Surface Slag Entrainment and Inclusion Adsorption in a Continuous Casting Mold

Zhang

Liu

Cui

2019

steel research int.

Self Cite

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“…The region of the meniscus of the liquid in the mold requires minimum level variations to maintain the slab surface free of surface cracks. [35][36][37] Thus, the flow structure in this region is particularly interesting. Therefore, a drilled hole, at 20 mm below the static level of the liquid and practiced in the midface of one of the narrow mold faces, holds a ten million Hz transducer to measure the instantaneous velocities along an imaginary line going from the mold face to the outer nozzle wall.…”

Section: Physical Modelmentioning

confidence: 99%

Physical Modeling and Mathematical Modeling Using the Scale‐Adaptive Simulation Model of Nozzle Design Effects on the Flow Structure in a Slab Mold

González-Solórzano

Morales

2022

steel research int.

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The internal designs of two tundish nozzles A and B to deliver liquid steel in a slab mold are characterized by a full‐scale water model and the scale‐adaptive simulation (SAS) turbulence model. The internal flows in the nozzles determine the flow patterns in the slab mold and their clogging tendency. The SAS model predicts well the sub meniscus velocities measured through ultrasound signals and the unsteady flows of a given nozzle. The turbulence structures in the sub‐meniscus region yield slow descending rates of velocity–time autocorrelations leading to flow turnovers of low frequency using both nozzles. However, nozzle A (a bore with one expansion and one contraction) yields larger power density spectra than nozzle B (designed with internal flow deflectors) in the sub meniscus region, indicating that this latter nozzle dissipates more the turbulent energy, effect due to its internal flow deflectors. Four clogging criteria, wall‐shear, Q, turbulence eddy frequency, ω = ε/k, and the instantaneous velocity in the boundary layer, together with the flow structure, prove to predict the propensity of a given nozzle design to clog by alumina inclusions in a particular region. This analysis reveals that nozzle B has a lower tendency to suffer clogging during industrial operation.

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“…13) The reactive slag is made by increasing the SiO 2 content in the slag and reducing the Al 2 O 3 content in the slag. However, a large amount of Al 2 O 3 will enter the mold flux, and the physical and chemical properties of the mold flux will still undergo major changes, 14) which cannot fundamentally solve the quality problems faced by the continuous casting of highaluminum steel. Non-(weak) reactive: by reducing the SiO 2 content in the slag or even without SiO 2 , the quality problem caused by the slag-steel reaction during the continuous casting of high-aluminum steel can be fundamentally solved.…”

Section: Analysis Of Slag-steel Reactive Of Fluorine-free Mold Fluxes...mentioning

confidence: 99%

Analysis of Slag-Steel Reactive of Fluorine-free Mold Fluxes Used for 3.52% Al-TRIP Steel

et al. 2022

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Analysis of Meniscus Fluctuation in a Continuous Casting Slab Mold

Cited by 22 publications

References 16 publications

Effect of Flow Field on Surface Slag Entrainment and Inclusion Adsorption in a Continuous Casting Mold

Effect of Flow Field on Surface Slag Entrainment and Inclusion Adsorption in a Continuous Casting Mold

Physical Modeling and Mathematical Modeling Using the Scale‐Adaptive Simulation Model of Nozzle Design Effects on the Flow Structure in a Slab Mold

Analysis of Slag-Steel Reactive of Fluorine-free Mold Fluxes Used for 3.52% Al-TRIP Steel

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