Publication detail

Oscillation Marks and Hooks on the Surface of Concast Slabs and their Relation to Breakout

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

Czech title

Oscilační vrásky a háky na povrchu continuálně litých bram a jejich vztah k průvalu

English title

Oscillation Marks and Hooks on the Surface of Concast Slabs and their Relation to Breakout

Type

journal article in Web of Science

Language

en

Original abstract

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, this could lead to immediate interruption in the concasting and a breakout. The material, physical, chemical and technological parameters, which both melts differed in were determined. If the dimensionless analysis is applied for assessing and reducing the number of these parameters, then it is possible to express the level of risk of breakout as a function of five dimensionless criteria.

Czech abstract

V sekundární zoně chlazení, kde se brama začíná narovnávat může vzniknout průval v místech chemické a teplotní heterogenity, zvyšování napětí a vysoké koncentrace nekovových, struskových vměstků. Zvláště v případě odlévání dvou taveb s různým chemickým složením bezprostředně za sebou může k průvalu dojít. Výše nebezpečí vzniku průvalu může být vyjádřena jako funkce pěti bezrozměrných kriterií.

English abstract

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, this could lead to immediate interruption in the concasting and a breakout. The material, physical, chemical and technological parameters, which both melts differed in were determined. If the dimensionless analysis is applied for assessing and reducing the number of these parameters, then it is possible to express the level of risk of breakout as a function of five dimensionless criteria.

Keywords in Czech

kontinuáně lité bramy, oscilační vrásky, háky, chemické složení, průval, kriteria

Keywords in English

concast slabs, oscillation marks, hooks, chemical composition, breakout, criteria

RIV year

2011

Released

21.01.2011

Publisher

Trans Tech Publications Ltd

Location

Zuerich, Switzerland

ISSN

1013-9826

Volume

465

Number

1

Pages from–to

467–470

Pages count

4

BIBTEX


@article{BUT51034,
  author="Karel {Stránský} and František {Kavička} and Bohumil {Sekanina} and Jana {Dobrovská} and Josef {Štětina} and Tomáš {Mauder},
  title="Oscillation Marks and Hooks on the Surface of Concast Slabs and their Relation to Breakout",
  year="2011",
  volume="465",
  number="1",
  month="January",
  pages="467--470",
  publisher="Trans Tech Publications Ltd",
  address="Zuerich, Switzerland",
  issn="1013-9826"
}