Removal of Inclusion from Molten Steel in Continuous Casting Tundish.

Bessho, Nagayasu; Yamasaki, Hiroyuki; Fujii, Tetsuya; Nozaki, Tsutomu; Hiwasa, Shouichi

doi:10.2355/isijinternational.32.157

Cited by 40 publications

(32 citation statements)

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“…With the assumptions, the solution of the flow equations with the boundary conditions allows to find the path and the distribution of non-metallic inclusions in liquid steel in the tundish during continuous casting. Confirmation can be found in results of numerous authors, 8,[17][18][19][20][21] where the motion of different non-metallic inclusions have been investigated in the steel flowing in the tundish.…”

Section: Introductionsupporting

confidence: 65%

Experimental and Numerical Investigations on Non-metallic Inclusions Distribution in Billets Casted at a Multi-strand Continuous Casting Tundish

et al. 2013

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Modern tundishes plays an important role of refining treatments to improve the quality and purity of casted steel. Purity of steel is defined by the non-metallic inclusions in the steel product, including their size, quantity, distribution, chemical composition and mineralogy. The aim of presented studies was to investigate the number and distribution of non-metallic inclusion in individual billets casted in a six-strand tundish. The industrial measurements, performed during stable production conditions at the continuous steel casting (CSC) plant, were performed for different tundish working space configurations. Analysis of the size and number of non-metallic inclusions has been done on the metallographic samples using light microscope. Experimental studies were supported with numerical simulations using large eddy simulations (LES) method. A modified boundary condition describing inclusion separation at the liquid steel surface was implemented in commercial code AnsysFluent.Experimental results concern size distribution of inclusions in billets for current tundish configuration showed big differences between casted ingots. Numerical results shown the domination in the number of inclusions occurring in the nozzles number 3 and 4 (for basic tundish configuration) and in the nozzles number 2 and 5 (for tundish with turbulence inhibitor). The reason for that is the change in configuration tundish working space, that has an impact on the flow field inside the tundish. Experimental measurements performed for proposed modified tundish configuration (with turbulence inhibitor) shown that those differences are much smaller, which in consequence has an influence in higher quality of continuously casted ingots for individual strand of CSC.

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Section: Introductionsupporting

confidence: 65%

Experimental and Numerical Investigations on Non-metallic Inclusions Distribution in Billets Casted at a Multi-strand Continuous Casting Tundish

et al. 2013

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“…Presently, the liquid metal as prepared on the ladle furnace stand has the required metallurgical purity and temperature allowing it to be cast by the continuous method. However, a number of interesting research works concerning tundishes have drawn the metallurgists' attention to this plant and contributed to perceiving the tundish also as an effective device assisting the liquid steel refining processes (Solorio-Diaz et al, 2005;Lopez-Ramirez et al, 2001;Hou et al, 2008;Bessho et al, 1992;Kuklev et al, 2004;Cwudziński, 2010). This results primarily from the fact that liquid steel resides in the tundish for a specific time, during which any phenomena that favour the refining process can be stimulated and intensified.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of Influence of Changing a Dam Height on Liquid Steel Flow and Behaviour of Non-metallic Inclusions in the Tundish

Cwudziński¹

2011

Computational Fluid Dynamics Technologies and Applications

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“…It is complicated to express slag quantity which passes from ladle into the tundish and it depends on the human factor due to used technology of slag detection. The changes in slag chemical composition can negatively affect steel cleanness [8,9]. …”

Section: Fig1 Reference Measurement Points and Location Of Sampling mentioning

confidence: 99%

The Influence of Slag on Degradation of Tundish Working Lining

Buľko¹,

Demeter²,

Havran³

2014

Acta Metall Slovaca

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This paper is focused on the influence of the slag formed by covering and refining powders on lifetime, respectively on the wearing of the working lining of tundish. The experimental part deals with the influences of used covering and refining powders on the working. Besides the influence of covering and refining powders is also considered the influence of the ladle well filler and slag from the ladle. The wear of the lining is evaluated using the change in dimensions of working lining in the range of slag mark on particular tundishes. Based on chemical composition of the slag and thermodynamics are modeled chemical reactions causing corrosion of the refractory material. The experimental part contains also comparison of measured chemical composition of the slag during the sequence with material balance.

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Removal of Inclusion from Molten Steel in Continuous Casting Tundish.

Cited by 40 publications

References 1 publication

Experimental and Numerical Investigations on Non-metallic Inclusions Distribution in Billets Casted at a Multi-strand Continuous Casting Tundish

Experimental and Numerical Investigations on Non-metallic Inclusions Distribution in Billets Casted at a Multi-strand Continuous Casting Tundish

Numerical Simulation of Influence of Changing a Dam Height on Liquid Steel Flow and Behaviour of Non-metallic Inclusions in the Tundish

The Influence of Slag on Degradation of Tundish Working Lining

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