Detail publikace

A breakout of a slab as effect of the change of chemical composition of a concast steel

STRÁNSKÝ, K. KAVIČKA, F. SEKANINA, B. DOBROVSKÁ, J.

Originální název

A breakout of a slab as effect of the change of chemical composition of a concast steel

Typ

článek ve sborníku ve WoS nebo Scopus

Jazyk

angličtina

Originální abstrakt

An important area of the caster is the so-called secondary cooling zone, which is subdivided into thirteen sections. In the secondary-cooling zone, where the slab is beginning to straighten out the breakout of the steel can occur in points of increased local chemical and temperature heterogeneity of the steel, from increased tension as a result of the bending of the slab and also from a high local concentration of non-metal, slag inclusions. Especially dangerous are the changes in the chemical composition of the steel during the actual concasting. In the case of two melts one immediately after the other, i.e. when melt of steel of quality A finished and right now the melt of quality B followed, this could lead to interruption in the concasting and a breakout. The material, physical, chemical and technological parameters, which both melts differed in were determined. The parameters from the temperature field were calculated by means of the model, for example maximal and minimal lenghts of isoliquidai and isosolidai, the range of so-called mushy zone with temperature between liquidus and solidus, the temperature of surface slab and so on. If the dimensionless analysis is applied for assessing and reducing the number of these all parameters, then it is possible to express the level of risk of breakout as a function of five dimensionless criteria.

Klíčová slova

concast slabs, change of chemical composition, breakout, criteria

Autoři

STRÁNSKÝ, K.; KAVIČKA, F.; SEKANINA, B.; DOBROVSKÁ, J.

Rok RIV

2011

Vydáno

6. 4. 2011

Nakladatel

Tanger

Místo

Ostrava

ISBN

978-80-87294-21-5

Kniha

Sborník přednášek Teorie a praxe výroby a zpracování oceli (ročník 27)

Číslo edice

1

Strany od

89

Strany do

94

Strany počet

6

BibTex

@inproceedings{BUT36790,
  author="Karel {Stránský} and František {Kavička} and Bohumil {Sekanina} and Jana {Dobrovská}",
  title="A breakout of a slab as effect of the change of chemical composition of a concast steel",
  booktitle="Sborník přednášek Teorie a praxe výroby a zpracování oceli (ročník 27)",
  year="2011",
  number="1",
  pages="89--94",
  publisher="Tanger",
  address="Ostrava",
  isbn="978-80-87294-21-5"
}