Study of Solidification of Continuously Cast Steel Round Billets Using Numerical Modelling

Tkadlečková, Markéta; Válek, Ladislav; Socha, Ladislav; Saternus, M.; Pieprzyca, J.; Merder, T.; Michalek, Karel; Kováč, Marek

doi:10.1515/amm-2016-0041

Cited by 12 publications

(20 citation statements)

References 11 publications

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“…(1), primarily predicted for continuous casting description can be applied to the simulation of thermal gradient field which is created during solidification of the virtual static brass ingot. It seems possible to determine the structural zones in the static ingot, analogously with the structure predictions made for the continuous casting, [33], [34].…”

Section: Mathematical Forecast Of Structural Zones' Formation In a VImentioning

confidence: 91%

Some Similarities / Differences between Steel Static and Virtual Brass Static Casting

Kwapisiński

Ivanova

Kania

et al. 2017

Archives of Foundry Engineering

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An innovative method for determining the structural zones in the large static steel ingots has been described. It is based on the mathematical interpretation of some functions obtained due to simulation of temperature field and thermal gradient field for solidifying massive ingot. The method is associated with the extrema of an analyzed function and with its points of inflection. Particularly, the CET transformation is predicted as a time-consuming transition from the columnar-into equiaxed structure. The equations dealing with heat transfer balance for the continuous casting are presented and used for the simulation of temperature field in the solidifying virtual static brass ingot. The developed method for the prediction of structural zones formation is applied to determine these zones in the solidifying brass static ingot. Some differences / similarities between structure formation during solidification of the steel static ingot and virtual brass static ingot are studied. The developed method allows to predict the following structural zones: fine columnar grains zone, (FC), columnar grains zone, (C), equiaxed grains zone, (E). The FCCT-transformation and CET-transformation are forecast as sharp transitions of the analyzed structures. Similarities between steel static ingot morphology and that predicted for the virtual brass static ingot are described.

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Section: Mathematical Forecast Of Structural Zones' Formation In a VImentioning

confidence: 91%

Some Similarities / Differences between Steel Static and Virtual Brass Static Casting

Kwapisiński

Ivanova

Kania

et al. 2017

Archives of Foundry Engineering

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“…The residence time is the overall time of a steel particle "spends" in the tundish or, more technically, the time between entering the tundish via the ladle shroud and leaving it via one of the exit ports (submerged entry nozzles), C-curves are measured in steady state, i.e., with constant water level in the tundish (input flow rate = output flow rate). [8][9][10][11][12] During the measurements it was empirically found that the optimal quantity of tracer in terms of the working range of conductivity probes is 150 ml. In general, three measurements are performed for each set of tundish configurations and casting conditions.…”

Section: Physical Modelmentioning

confidence: 99%

Optimizing of steel flow in three-strand T-type tundish using mathematical and physical models

Buľko

Demeter

Dzurňák

et al. 2022

METAL 2022 Conference Proeedings

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The presented research was focused on optimizing the internal equipment of the tundish with respect to residence times between the middle (No. 2) and two lateral casting strands (No. 1 and 3). The different values of residence times of individual strands affect the cleanliness of steel and cause thermal and chemical inhomogeneities. The specific flow given by the shape of the three-strand symmetrical T-type tundish causes the middle casting strand to have a relatively short residence time compared to lateral strands. For this reason, the flow in the tundish was controlled by changing the angle of outlet holes in tundish baffle separating the inlet part of the tundish from its working volume. The research was carried out using computer simulations supported by the results from the SimConT physical model.

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“…Not every structural zone observed in the steel static ingots, [1,7,9,11,14,20,[22][23][24][25]27,29,30,32], can be revealed in the continuously cast brass ingots. Moreover, some of them cannot be formed since the brass ingots do not contain relevant additions (apart from the hard particles).…”

Section: Mathematical Prediction Of Structural Transformationsmentioning

confidence: 99%

Structural Transformations Versus Hard Particles Motion in the Brass Ingots

Wołczyński

Ivanova

Kwapisiński

et al. 2017

Archives of Metallurgy and Materials

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A mathematical method for the forecast of the type of structure in the steel static ingot has been recently developed. Currently, the method has been applied to structural zones prediction in the brass ingots obtained by the continuous casting. Both the temperature field and thermal gradient field have been calculated in order to predict mathematically the existence of some structural zones in the solidifying brass ingot. Particularly, the velocity of the liquidus isotherm movement and thermal gradient behavior versus solidification time have been considered. The analysis of the mentioned velocity allows the conclusion that the brass ingots can evince: chilled columnar grains-, (CC), fine columnar grains-, (FC), columnar grains-, (C), equiaxed grains zone, (E), and even the single crystal, (SC), situated axially. The role of the mentioned morphologies is analyzed to decide whether the hard particles existing in the brass ingots can be swallowed or rejected by the solid / liquid (s/l) interface of a given type of the growing grains. It is suggested that the columnar grains push the hard particles to the end of a brass ingot during its continuous casting.

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Study of Solidification of Continuously Cast Steel Round Billets Using Numerical Modelling

Cited by 12 publications

References 11 publications

Some Similarities / Differences between Steel Static and Virtual Brass Static Casting

Some Similarities / Differences between Steel Static and Virtual Brass Static Casting

Optimizing of steel flow in three-strand T-type tundish using mathematical and physical models

Structural Transformations Versus Hard Particles Motion in the Brass Ingots

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