Publication detail

Comparison of the temperature field continuously cast steel slabs with different chemical composition.

KAVIČKA, F. STRÁNSKÝ, K. SEKANINA, B. ŠTĚTINA, J. MASARIK, M. MAUDER, T.

Original Title

Comparison of the temperature field continuously cast steel slabs with different chemical composition.

English Title

Comparison of the temperature field continuously cast steel slabs with different chemical composition.

Type

journal article - other

Language

en

Original Abstract

Numerical model made by authors was applied to the simulation of the transient temperature field of continuously cast steel slab of two different chemical composition. The model solves the Fourier-Kirchhoff equation of the temperature field of slab- crystallizer system respectively slab-ambient system with these main thermophysical parameters : thermal conductivity, specific heat capacity, density and enthalpy. When both melts follow closely after each other, the critical state of so called breakout occurs at a certain point secondary cooling zone of a caster. It is probably 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 a cross-section of a slab during its movement through the whole caster from the level of the melt in the crystallizer to the cutting torch for both melts and and for their mixture. Calculation of the temperature field of a slab has focused mainly on the part of the slab before the breakout and its surroundings. The results of the temperature field can establish a model of the chemical heterogeneity of steel supported by material expertise on samples taken from the breakout.

English abstract

Numerical model made by authors was applied to the simulation of the transient temperature field of continuously cast steel slab of two different chemical composition. The model solves the Fourier-Kirchhoff equation of the temperature field of slab- crystallizer system respectively slab-ambient system with these main thermophysical parameters : thermal conductivity, specific heat capacity, density and enthalpy. When both melts follow closely after each other, the critical state of so called breakout occurs at a certain point secondary cooling zone of a caster. It is probably 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 a cross-section of a slab during its movement through the whole caster from the level of the melt in the crystallizer to the cutting torch for both melts and and for their mixture. Calculation of the temperature field of a slab has focused mainly on the part of the slab before the breakout and its surroundings. The results of the temperature field can establish a model of the chemical heterogeneity of steel supported by material expertise on samples taken from the breakout.

Keywords

continuously cast slab, temperature field, chemical composition, heterogeneity, numerical model, breakout

RIV year

2013

Released

28.08.2013

Pages from

497

Pages to

501

Pages count

5

BibTex


@article{BUT101415,
  author="František {Kavička} and Karel {Stránský} and Bohumil {Sekanina} and Josef {Štětina} and Miloš {Masarik} and Tomáš {Mauder}",
  title="Comparison of the temperature field continuously cast steel slabs with different chemical composition.",
  annote="Numerical model made  by authors was applied to the simulation of the transient temperature field of continuously cast steel slab of two different chemical composition. The model solves the Fourier-Kirchhoff equation of the  temperature field of slab- crystallizer system respectively  slab-ambient system   with these  main thermophysical  parameters : thermal conductivity, specific heat capacity, density and enthalpy. When both melts follow closely after each other, the critical state of so called breakout occurs at a certain point secondary cooling zone of a caster. It is probably 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 a cross-section of a slab  during its movement through the whole caster from the level of the melt in the crystallizer to the cutting torch for both melts and and for their mixture. Calculation of the temperature field of a slab has focused mainly on the part of the slab before the breakout  and its surroundings. The results of the temperature field can establish a model of the chemical heterogeneity of steel supported by material expertise on samples taken from the breakout.",
  chapter="101415",
  number="4",
  volume="47 (2013)",
  year="2013",
  month="august",
  pages="497--501",
  type="journal article - other"
}