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| rdf:type
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| Description
| - Original numerical model was applied for simulation of the transient temperature field of continuously cast steel slab of two different chemical composition. The model solves the Fourier-Kirchhoff´s equation of the temperature field of slab-mould system or slab-environment system with following various thermo-physical parameters: thermal conductivity, specific heat capacity, density and enthalpy including their dependence on temperature. When both melts follow closely after each other, the critical state of the so called breakout occurs at a certain point of the secondary cooling zone of a caster. It is obviously caused by a combination of surface defects. However, different chemical composition of two steels and their mixing is apparently decisive. Therefore the temperature model has simulated the temperature history of every point of the cross-section of the slab during its movement through the whole caster from the level of the melt in the mould to the cutting torch for both melts and for their mixture (with average chemical composition). Calculation of the temperature field of a slab has focused mainly on the part of the slab before the breakout and its surroundings. Calculation results were compared graphically by means of a graph of temperatures in characteristic points of the cross section, a graph of isotherms in the critical cross-section passing through the breakout, including iso-liquidus and iso-solidus, a graph of isotherms in longitudinal sections and a graph of increase in thickness of solidified shell. Definition of the boundary conditions in primary and tertiary cooling zone of the caster is identical for all three variants of calculation, in secondary cooling zone depends on the cooling curves. The results of the temperature field can establish a model of the chemical heterogeneity of steel supported by material expertise on the samples taken from the breakout.
- Original numerical model was applied for simulation of the transient temperature field of continuously cast steel slab of two different chemical composition. The model solves the Fourier-Kirchhoff´s equation of the temperature field of slab-mould system or slab-environment system with following various thermo-physical parameters: thermal conductivity, specific heat capacity, density and enthalpy including their dependence on temperature. When both melts follow closely after each other, the critical state of the so called breakout occurs at a certain point of the secondary cooling zone of a caster. It is obviously caused by a combination of surface defects. However, different chemical composition of two steels and their mixing is apparently decisive. Therefore the temperature model has simulated the temperature history of every point of the cross-section of the slab during its movement through the whole caster from the level of the melt in the mould to the cutting torch for both melts and for their mixture (with average chemical composition). Calculation of the temperature field of a slab has focused mainly on the part of the slab before the breakout and its surroundings. Calculation results were compared graphically by means of a graph of temperatures in characteristic points of the cross section, a graph of isotherms in the critical cross-section passing through the breakout, including iso-liquidus and iso-solidus, a graph of isotherms in longitudinal sections and a graph of increase in thickness of solidified shell. Definition of the boundary conditions in primary and tertiary cooling zone of the caster is identical for all three variants of calculation, in secondary cooling zone depends on the cooling curves. The results of the temperature field can establish a model of the chemical heterogeneity of steel supported by material expertise on the samples taken from the breakout. (en)
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| Title
| - Analysis of Atypical Breakout During Radial Continuous Casting of Slab in the Straightening Zone I. Numerical Simulation of Temperature Field of a Slab
- Analysis of Atypical Breakout During Radial Continuous Casting of Slab in the Straightening Zone I. Numerical Simulation of Temperature Field of a Slab (en)
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| skos:prefLabel
| - Analysis of Atypical Breakout During Radial Continuous Casting of Slab in the Straightening Zone I. Numerical Simulation of Temperature Field of a Slab
- Analysis of Atypical Breakout During Radial Continuous Casting of Slab in the Straightening Zone I. Numerical Simulation of Temperature Field of a Slab (en)
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| skos:notation
| - RIV/61989100:27360/13:86088075!RIV14-GA0-27360___
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| http://linked.open...avai/predkladatel
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| http://linked.open...avai/riv/aktivita
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| http://linked.open...avai/riv/aktivity
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| http://linked.open...iv/cisloPeriodika
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| http://linked.open...vai/riv/dodaniDat
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| http://linked.open...aciTvurceVysledku
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| http://linked.open.../riv/druhVysledku
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| http://linked.open...iv/duvernostUdaju
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| http://linked.open...titaPredkladatele
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| http://linked.open...dnocenehoVysledku
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| http://linked.open...ai/riv/idVysledku
| - RIV/61989100:27360/13:86088075
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| http://linked.open...riv/jazykVysledku
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| http://linked.open.../riv/klicovaSlova
| - breakout; numerical model; temperature field; thermo-physical properties; chemical composition of steel; steel; Concastslab (en)
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| http://linked.open.../riv/klicoveSlovo
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| http://linked.open...odStatuVydavatele
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| http://linked.open...ontrolniKodProRIV
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| http://linked.open...i/riv/nazevZdroje
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| http://linked.open...in/vavai/riv/obor
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| http://linked.open...ichTvurcuVysledku
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| http://linked.open...cetTvurcuVysledku
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| http://linked.open...vavai/riv/projekt
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| http://linked.open...UplatneniVysledku
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| http://linked.open...v/svazekPeriodika
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| http://linked.open...iv/tvurceVysledku
| - Dobrovská, Jana
- Kavička, František
- Masarik, Miloš
- Mauder, Tomáš
- Sekanina, Bohumil
- Stránský, Karel
- Štětina, Josef
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| issn
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| number of pages
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| http://localhost/t...ganizacniJednotka
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