Study on transport phenomena in the beam blank continuous casting mould coupling copper mould with molten steel

Zhang, L.-L.; Chen, D.-F.; Chen, H.-B.; Long, Mujun; Xie, Xin

doi:10.1080/03019233.2016.1209881

Cited by 10 publications

(8 citation statements)

References 18 publications

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“…Together with an accurate model of heat transfer across the interfacial gap between the solidifying steel and the mold or secondary‐cooling chamber, a computational thermal‐fluid flow model can predict the shape of the solidifying steel shell, including the local shell‐thinning effect near the point of jet impingement onto the solidification front, for example at the narrow face in a slab caster, or inner shoulder in a beam‐blank caster . To accurately capture this behavior requires a very refined mesh, however, in order to avoid exaggeration of the effect of the fluid flow on the shell growth .…”

Section: Fluid Flow Modelingmentioning

confidence: 99%

Review on Modeling and Simulation of Continuous Casting

Thomas

2017

steel research int.

175

115

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Continuous casting is a mature, sophisticated technological process, used to produce most of the world's steel, so is worthy of fundamentally-based computational modeling. It involves many interacting phenomena including heat transfer, solidification, multiphase turbulent flow, clogging, electromagnetic effects, complex interfacial behavior, particle entrapment, thermal-mechanical distortion, stress, cracks, segregation, and microstructure formation. Furthermore, these phenomena are transient, three-dimensional, and operate over wide length and time scales. This paper reviews the current state of the art in modeling these phenomena, focusing on practical applications to the formation of defects. It emphasizes model verification and validation of model predictions. The models reviewed range from fast and simple for implementation into online model-based control systems to sophisticated multiphysics simulations that incorporate many coupled phenomena. Both the accomplishments and remaining challenges are discussed.

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Section: Fluid Flow Modelingmentioning

confidence: 99%

Review on Modeling and Simulation of Continuous Casting

Thomas

2017

steel research int.

175

115

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“…In this article, Fluent software was adopted to solve the equations and calculate the heat transfer between the slab surface and the roll . The discrete ordinates model was selected as the radiation model …”

Section: Mathematical Modelmentioning

confidence: 99%

Numerical Simulation of Heat Transfer between Roll and Slab under Dry Secondary Cooling in Ultrathick Slab Continuous Casting

Liu

Long

et al. 2019

steel research int.

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A 3D model of heat transfer between the circular‐distributed water channel roll (CDWCR) and slab during ultrathick slab continuous casting process is established, considering the structure of water channels inside CDWCR and rotating contact between the roll and slab. The results show that the contribution of conduction heat transfer in the heating process of the roll is greater than that of radiation heat transfer, and maximum surface temperature of the roll is 460 K, located at the place where it is right out of contact with the slab, and the change of internal temperature of the roll lags behind the change of surface temperature. The temperature decreases gradually from the outside to the inside in the radial direction. The temperature of the CDWCR inside the circle of cooling water channels is no more than 325 K. The yield strength of CDWCR is analyzed, showing that the strength of the roll meets the requirements of using it in the process. In addition, the orthogonal method is used to analyze the influence factors on CDWCR temperature. The results indicate that the orders of factors affecting more are the contact angle, the slab temperature, the casting speed, and the inlet speed of cooling water.

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“…The conventional straight nozzle inlet was set a velocity inlet V in (m s -1 ) determined by the mass conservation principle. The initial k and ε at inlet are calculated using Equation ( 8) [16].…”

Section: Governing Equationsmentioning

confidence: 99%

Influence of mould curvature on the metallurgical performances of beam blank continuous casting

Wang

Liu

et al. 2019

Ironmaking & Steelmaking

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A 3-D finite volume mathematical model was established by customizing pull velocity field function of solidified shell, to simulate the coupled fluid flow, heat transfer, and solidification of beam blank continuous casting, taking into consideration of the effects of mould curvature on the metallurgical performances. When the central impact stream reaches to a certain depth, part of it circulates to scour the solidified shell, causing the remelting of shell at fillet and narrow face centre from about 370 mm down the meniscus to mould exit. The differences of strand surface temperature and shell thickness between inside and outside radius caused by the mould curvature are obvious only at the fillet of the mould exit. The fillet of outside radius having the highest temperature but the thinnest solidified shell is prone to arising quality problems. The metallurgical performances under different casting speed and superheat indicated that the strand surface temperature arises and shell thickness decreases integrally at the mould exit as the casting speed increases. The superheat has the same influence trend as the casting speed does, but the sites it affects are concentrated in the fillet and narrow face centre.

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Study on transport phenomena in the beam blank continuous casting mould coupling copper mould with molten steel

Cited by 10 publications

References 18 publications

Review on Modeling and Simulation of Continuous Casting

Review on Modeling and Simulation of Continuous Casting

Numerical Simulation of Heat Transfer between Roll and Slab under Dry Secondary Cooling in Ultrathick Slab Continuous Casting

Influence of mould curvature on the metallurgical performances of beam blank continuous casting

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