Behavior and Removal of Inclusions by Means of the Use of Mathematical and Physical Simulations as Well as the Measured Vibrations with an Accelerometer in a Funnel Mold in Thin Slab Continuous Casting

Arcos-Gutierrez, Hugo; Espinosa, Carlos Alberto; Barrera-Cardiel, Gerardo; Carreόn, Héctor

doi:10.2355/isijinternational.55.1017

Cited by 4 publications

(4 citation statements)

References 5 publications

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“…[33] Ostwald's ripening theory, according to Kluken et al, [33] can explain the growing mechanism of inclusions. Researchers have compared the growth and removal of inclusions in ladles, [34][35][36][37][38][39][40] tundish, [34][35][36][37][38][39][40] and crystallizers [31,[41][42][43][44] using the methodology mentioned above. By contrasting the model predictions with data from field tests, Kwon et al [35] were able to confirm that the model can be utilized to accurately represent the fluctuation in inclusion size in turbulent steel.…”

Section: Process Of Inclusion Growth In Steelmentioning

confidence: 99%

Research Status of Numerical Simulation of Nonmetallic Inclusions Interfacial Removal

Sun

Yang

et al. 2023

steel research int.

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The removal of inclusions in liquid steel has always been the focus of research, and the removal of inclusions is mainly through the process of the inclusion through the slag–steel interface. The inclusion removal process can be subdivided into inclusions in molten steel grew up rise, in steel–slag interface through separation, adsorb dissolved in molten slag 3 steps. Based on the microscopic process of three steps, this article summarizes and discusses the mathematical model, fluid mechanics model, and experimental verification method of inclusion removal process, analyzes limiting and influencing factors of inclusion removal process, and comprehensively describes the numerical simulation research progress of inclusion removal process. With the development of numerical simulation techniques and experimental equipment, some progress has been made in the study of interfacial removal of inclusions. The inclusion interface removal behavior can be analyzed semiquantitatively based on dynamic force model. The computational fluid dynamics model has advantages in studying the phenomena of the inclusion interface, and the phase‐field method is often used to simulate the removal process of the inclusion interface. The combination of water model and numerical simulation, high‐temperature laser confocal method, and other methods is of great help to explore the interface behavior of inclusions.

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Section: Process Of Inclusion Growth In Steelmentioning

confidence: 99%

Research Status of Numerical Simulation of Nonmetallic Inclusions Interfacial Removal

Sun

Yang

et al. 2023

steel research int.

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“…The influence of continuous casting process parameters on the flow field of the mold has been studied by many previous researchers. [1][2][3][4][5][6][7][8][9] Zhang et al [7] studied the effect of casting speed on the flow field in the mold and found that as the casting speed gradually increases, the upper circulation flow on the mold gradually increases, resulting in an increase in the fluctuation of the liquid level and the risk of slag entrapment. Zhang et al [10] developed an argon bubble interaction model and compared the distribution of argon bubbles inside the mold under different conditions such as casting speed, argon gas flow rate, and immersion depth of the SEN.…”

Section: Introductionmentioning

confidence: 99%

Optimization of Port Angle for Narrow‐Width Mold Flow Field under High Casting Speed Based on Large Eddy Simulation and High‐Temperature Measurement of Velocity

Guo,

Yang,

Liu

2023

steel research int.

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This article studies the flow field of the mold through numerical simulation and high‐temperature measurement, and discusses the effects of casting speed and port angle on the flow field of the 880 mm wide mold. The velocities near the mold surface of the numerical simulation are in good agreement with those of the high‐temperature measurement. As the casting speed continues to increase, the surface flow velocity of the mold also increases. When the casting speed increases to 1.8 m/min, the flow pattern of the mold exhibits a strong Double‐Roll Flow (DRF), the strong jet increases the risk of argon bubbles being captured by the solidification front inside the mold. As the port angle of the submerged entry nozzle (SEN) gradually increases, the surface flow velocity of the mold gradually decreases. By appropriately increasing the port angle of the SEN to 20°, the surface flow velocity of the mold decreases, and the stability of the molten steel‐slag interface improves. At the same time, there is no significant change in the distribution of argon bubbles, and the removal rate of inclusions is the highest.This article is protected by copyright. All rights reserved.

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“…In recent years, substantial effort has been expended in numerical simulation studies on inclusion behavior in CC (Arcos-Gutierrez et al , 2015; Ho and Hwang, 2003; Li et al , 2020, 2019; Li and Tsukihashi, 2003; Liu and Li, 2018; Pfeiler et al , 2008; Thomas et al , 2014; Trindade et al , 2007; Wang et al , 2014; Yang et al , 2015; Yin et al , 2017, 2018, 2019; Yuan et al , 2004; Zhang et al , 2019, 2006; Zhang and Thomas, 2003b; Zhang and Wang, 2012). Several previous works mainly focus on the inclusion behavior in slab casters only and few investigations have been done in the billet (Ho and Hwang, 2003; Trindade et al , 2007; Yin et al , 2018, 2019; Zhang and Wang, 2012) and bloom (Wang et al , 2014; Yang et al , 2015) caster mold.…”

Section: Introductionmentioning

confidence: 99%

Effect of casting speed on solidification and inclusion motions in bloom mold caster under the influence of in-mold electromagnetic stirring

Kumar

Jha

2022

HFF

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Purpose The purpose of this article is to numerically investigate the effect of casting speed on the fluid flow, solidification and inclusion motion under the influence of electromagnetic stirring (EMS) in the bloom caster mold with bifurcated submerged entry nozzle (SEN). Design/methodology/approach The electromagnetic field obtained by solving Maxwell’s equation is coupled with the fluid flow, solidification and discrete phase model using the in-house user-defined functions. An enthalpy porosity approach and Lagrangian approach are applied for the solidification analysis and non-metallic inclusions motion tracking, respectively. Findings Investigation shows that the casting speed and EMS significantly affect the steel flow, solidification and inclusion behavior inside the mold. Investigations are being conducted into the complex interplay between the induced flow and the SEN’s inertial impinging jet. In low and medium casting speeds, the application of EMS significantly increases the inclusion removal rate. Inclusion removal is studied for its different size and density and further effect of EMS is also reported on cluster formation and distribution of inclusion in the domain. Practical implications The model may be used to optimize the process parameter (casting speed and EMS) to improve the casting quality of steel by removing the impurities. Originality/value The effect of casting speed on the solidification and inclusion behavior under the influence of time-varying EMS in bloom caster mold with bifurcated nozzle has not been investigated yet. The findings may assist the steelmakers in improving the casting quality.

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Behavior and Removal of Inclusions by Means of the Use of Mathematical and Physical Simulations as Well as the Measured Vibrations with an Accelerometer in a Funnel Mold in Thin Slab Continuous Casting

Cited by 4 publications

References 5 publications

Research Status of Numerical Simulation of Nonmetallic Inclusions Interfacial Removal

Research Status of Numerical Simulation of Nonmetallic Inclusions Interfacial Removal

Optimization of Port Angle for Narrow‐Width Mold Flow Field under High Casting Speed Based on Large Eddy Simulation and High‐Temperature Measurement of Velocity

Effect of casting speed on solidification and inclusion motions in bloom mold caster under the influence of in-mold electromagnetic stirring

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