Modeling the Entrapment of Nonmetallic Inclusions in Steel Continuous-Casting Billets

Zhang, Lifeng; Wang, Yufeng

doi:10.1007/s11837-012-0421-2

Cited by 62 publications

(55 citation statements)

References 18 publications

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“…The flow pattern can either encourage inclusion removal, by bringing flow to the top surface slag layer, or by sending the inclusions deeper to be entrapped in the solidification front. [1][2][3][4][5] Inclusion-related phenomena in the continuous casting mold region are shown in Fig. 2, and the inclusion-related phenomena are summarized in Table I.…”

Section: Nonmetallic Inclusions During the Steel Refining And Castingmentioning

confidence: 99%

“…72,[75][76][77][78][79] Particle growth occurs at microscales depending on the microscale phenomena of bubble attachment, turbulent collisions, 27,72,75,76 interface reactions, reoxidation, and local thermodynamics. 20,[80][81][82][83] Finally, inclusion transport and removal at the slag or by bubble flotation 24,26,84,85 and particle entrapment in solidifying dendritic interfaces [3][4][5]73 depend on flow transport and on the nature of the flow pattern and shape of the metallurgical vessel. Different nano-and microscale models have been used to predict important specific phenomena.…”

Section: -10mentioning

confidence: 99%

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Nucleation, Growth, Transport, and Entrapment of Inclusions During Steel Casting

Zhang

2013

JOM

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Section: Nonmetallic Inclusions During the Steel Refining And Castingmentioning

confidence: 99%

Section: -10mentioning

confidence: 99%

Nucleation, Growth, Transport, and Entrapment of Inclusions During Steel Casting

Zhang

2013

JOM

Self Cite

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“…[6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24] Many previous works [13][14][15][16][17][18][19][20][21][22][23][24] have studied the capture of inclusions or bubbles by the solidifying shell in continuous casting. Yuan Q. et al 13) used a Lagrangian trajectory tracking method, coupling time-dependent flow fields obtained from large-eddy simulation (LES), to predict particle motion and capture in a thinslab steel caster.…”

Section: Introductionmentioning

confidence: 99%

“…The locations of captured particles and distribution of total oxygen in the final steel slab were predicted, based on the computations. Zhang L. et al 14) established two 3-D numerical models to study the entrapment of inclusions in continuous-casting billets. One ignored the heat transfer and solidification, using the sink term approach to represent the mass and momentum loss during the solidification.…”

Section: Introductionmentioning

confidence: 99%

Numerical Study on the Capture of Large Inclusion in Slab Continuous Casting with the Effect of In-mold Electromagnetic Stirring

et al. 2017

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Large inclusions captured by the solidifying shell deteriorate the surface quality of interstitial free steel. To investigate the capture of large inclusion in slab continuous casting, a three-dimensional model coupling flow field, solidification and inclusion motion has been developed. Additionally, to study the effect of in-mold electromagnetic stirring (M-EMS) on large inclusion capture, the electromagnetic field has been also coupled in the model. The results of electromagnetic field indicates its centrally symmetrical distribution on the cross-section, and the electromagnetic force swirls on the cross-section. The effects of M-EMS on flow pattern, solidification and inclusion capture have been discussed. The M-EMS significantly changes the flow pattern and solidifying shell thickness. The inhomogeneous distribution of large inclusions existing in the slab surface in the slab surface are different between the cases with and without M-EMS. Furthermore, the number of captured inclusions increases at 0-0.02 m beneath the wide surface and decreases at 0.02-0.04 m beneath the wide surface in response to the application of M-EMS. Large inclusions in steel were quantitatively analyzed by the galvanostatic electrolysis method. The experimental results are in agreement with the simulation results, suggesting that the model is valid.

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“…Previous models of two-phase Ar and steel flow in continuous casting [2][3][4][5][6] have used different methods to achieve the necessary twoway coupling to predict the flow pattern, and reveal the importance of the larger bubbles. Relatively few studies [2][3][4] have investigated quantitatively the capture rate and distribution of inclusion particles in continuous casting.…”

Section: Introductionmentioning

confidence: 99%

Simulation and validation of two-phase turbulent flow and particle transport in continuous casting of steel slabs

Jin

Thomas

Liu

et al. 2015

IOP Conf. Ser.: Mater. Sci. Eng.

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Abstract. In continuous steel casting, argon gas is usually injected at the slide gate or stopper rod to prevent clogging, but entrapped bubbles may cause defects in the final product. To better understand this, the flow of molten steel and the transport and capture of argon gas bubbles have been simulated and compared with plant measurements. First, the flow field was solved with an Eulerian k-ε model of the steel, which was two-way coupled with a Lagrangian model of the large bubbles using a Discrete Random Walk method to include dispersion of bubbles due to turbulence. The asymmetrical flow pattern predicted on the top surface agreed well with nailboard measurements. Then, the motion and capture of over two million bubbles were simulated using two different capture criteria. Results with the advanced capture criterion agreed well with measurements of the number, locations, and sizes of captured bubbles, especially for larger bubbles. The relative capture fraction of 0.3% was close to the measured 0.2% for 1mm bubbles, and occurred very near the top surface. The model presented here is an efficient tool to study the capture of bubbles and inclusion particles in solidification processes.

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Modeling the Entrapment of Nonmetallic Inclusions in Steel Continuous-Casting Billets

Cited by 62 publications

References 18 publications

Nucleation, Growth, Transport, and Entrapment of Inclusions During Steel Casting

Nucleation, Growth, Transport, and Entrapment of Inclusions During Steel Casting

Numerical Study on the Capture of Large Inclusion in Slab Continuous Casting with the Effect of In-mold Electromagnetic Stirring

Simulation and validation of two-phase turbulent flow and particle transport in continuous casting of steel slabs

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