Analysis of three-dimensional vortexes below the free surface in a continuous casting mold

2011 ◽  
Vol 18 (4) ◽  
pp. 397-407 ◽  
Author(s):  
Cesar A. Real-Ramirez ◽  
Jesus I. Gonzalez-Trejo
2005 ◽  
Vol 45 (11) ◽  
pp. 1626-1635 ◽  
Author(s):  
Raul MIRANDA ◽  
Miguel Angel BARRON ◽  
Jose BARRETO ◽  
Luis HOYOS ◽  
Jesus GONZALEZ

2012 ◽  
Vol 538-541 ◽  
pp. 1076-1079
Author(s):  
Xing Juan Wang ◽  
Li Guang Zhu ◽  
Ran Liu ◽  
Zhi Hao Li ◽  
Peng Tian

Using finite element method, the molten steel flow process in soft-contact electromagnetic continuous casting mold is simulated. The results show that the molten steel surface were affected by the electromagnetic force and shrink to the centre, near meniscus zone the flow velocity of steel increases and appears an obvious circumfluence, a large number of inclusion float and are absorbed by flux; on the other hand, the turbulent kinetic energy significant increases in circumfluence area, this exacerbates the reaction between flux and liquid steel, the initial size of the solidification organization are refined, and the surface quality of slab are enhanced.


Metals ◽  
2018 ◽  
Vol 9 (1) ◽  
pp. 7 ◽  
Author(s):  
Xianglong Li ◽  
Baokuan Li ◽  
Zhongqiu Liu ◽  
Ran Niu ◽  
Yanqiang Liu ◽  
...  

A transient, three-dimensional mathematical model has been developed to study the slag entrapment in a continuous casting mold. The unsteady turbulent flow is computed using the large eddy simulation (LES). The sub-grid scale structure is modeled by the Smagorinsky–Lilly model. The movements of discrete bubbles, as well as three continuous phases (air–slag–steel), are described by solving the coupled discrete particle model and volume of fraction (DPM+VOF) approach. The bubble transport inside different phases (steel and slag) and the escape near the air–slag interface are well studied. Good agreement is obtained by comparing with the plant observation of the slag eyes on the top surface of the mold. Three main mechanisms of slag entrapment are identified; vortex formation, shear-layer instability, and meniscus fluctuation. Four stages are observed for a slag entrapment: deformation, necking, breaking, and dragging in the mold. The model is helpful for understanding the formation of slag entrapment during continuous casting.


Author(s):  
C. Ortner ◽  
L. Martins Demuner ◽  
M. Schuster ◽  
O. Lang ◽  
F. Ramstorfer

2011 ◽  
Vol 66-68 ◽  
pp. 185-188
Author(s):  
Hong Ming Wang ◽  
Ting Wang Zhang ◽  
Yong Qi Yan ◽  
Bang Min Song ◽  
Gui Rong Li

According to the rule of non-sinusoidal oscillation of continuous casting mold, a mathematical model was established to study the effects of oscillation parameters on the consumption rate of mold flux. The results indicated that the mold flux consumption rate is remarkably affected by the non-sinusoidal factor. This proves that the non-sinusoidal oscillation of mold contributes to increase the flux consumption. Moreover, the amplitude and frequency of mold oscillation have effects on mold flux consumption rate. The non-sinusoidal oscillation parameters must be optimized.


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