Publication detail

Impact of casting speed on the temperature field of continuously cast steel billets

KLIMEŠ, L. ŠTĚTINA, J. BUČEK, P.

Czech title

Vliv licí rychlosti na teplotní pole plynule odlévaných ocelových sochorů

English title

Impact of casting speed on the temperature field of continuously cast steel billets

Type

journal article - other

Language

en

Original abstract

In continuous casting, the casting speed is one of the most important parameters that influence the entire process of steel production and its productivity. From the physical point of view, the casting speed affects the temperature field formation along the cast steel blank, e.g., the surface and corner temperatures as well as the solidification of the steel, e.g., the shell thickness, the isosolidus and isoliquidus curves, the metallurgical length and the width of the mushy zone. In order to achieve a particular steel structure, the temperature ranges in particular positions (e.g., due to the straightening), and to minimize the occurrence of defects, it is very important to pay attention to a proper determination of the casting speed. The aim of this paper is to investigate the impact of the casting speed on the temperature field formation of continuously cast steel billets, and on the aforementioned parameters. Three steel grades with various chemical compositions and the originally implemented numerical model of the transient temperature field of continuously cast billets in Zeleziarne Podbrezova in Slovakia were utilized for the analysis. The results proved the significant influence of the casting speed on the temperature field formation and on related parameters. The conclusions may be utilized, e.g., for the determination of the casting speed and for the setup of the caster.

Czech abstract

Licí rychlost je jedním z nejdůležitějších parametrů plynulého odlévání oceli, který ovlivňuje celý proces produkce oceli a jeho produktivitu. Z fyzikálního pohledu licí rychlost ovlivňuje zejména utváření teplotního pole podél odlévaného sochoru, např. povrchovou teplotu a teplotu v rozích sochoru a stejně tak i samotný proces solidifikace, např. tloušťku ztuhlé kůry na povrchu sochoru, izosolidu a izolikvidu, metalurgickou délku a šírku mushy zóny. S ohledem na dosažení požadované jakosti oceli a minimalizaci výskytu vad odlévaných sochorů je nutné dbát na vhodné stanovení licí rychlosti. Cílem příspěvku je analýza vlivu licí rychlosti na utváření teplotního pole plynule litých sochorů a dalších zmíněných parametrů. Tři značky oceli odlévané v Železárnách Podbrezová s různým chemickým složením byly podrobeny analýze s využitím původního numerického modelu teplotního pole. Výsledky prokázaly významný vliv licí rychlosti na utváření teplotního pole a související parametry. Výsledky a závěry lze využít pro stanovení licí rychlosti a nastavení licího stroje.

English abstract

In continuous casting, the casting speed is one of the most important parameters that influence the entire process of steel production and its productivity. From the physical point of view, the casting speed affects the temperature field formation along the cast steel blank, e.g., the surface and corner temperatures as well as the solidification of the steel, e.g., the shell thickness, the isosolidus and isoliquidus curves, the metallurgical length and the width of the mushy zone. In order to achieve a particular steel structure, the temperature ranges in particular positions (e.g., due to the straightening), and to minimize the occurrence of defects, it is very important to pay attention to a proper determination of the casting speed. The aim of this paper is to investigate the impact of the casting speed on the temperature field formation of continuously cast steel billets, and on the aforementioned parameters. Three steel grades with various chemical compositions and the originally implemented numerical model of the transient temperature field of continuously cast billets in Zeleziarne Podbrezova in Slovakia were utilized for the analysis. The results proved the significant influence of the casting speed on the temperature field formation and on related parameters. The conclusions may be utilized, e.g., for the determination of the casting speed and for the setup of the caster.

Keywords in Czech

plynulé odlévání oceli, licí rychlost, dynamický solidifikační model, teplotní pole

Keywords in English

continuous casting, casting speed, dynamic solidification model, temperature field

RIV year

2013

Released

30.07.2013

Publisher

Insitute of Metals and Technology

Location

Ljubljana, Slovenia

ISSN

1580-2949

Volume

47

Number

4

Pages from–to

507–513

Pages count

7

BIBTEX


@article{BUT100759,
  author="Lubomír {Klimeš} and Josef {Štětina} and Pavol {Buček},
  title="Impact of casting speed on the temperature field of continuously cast steel billets",
  year="2013",
  volume="47",
  number="4",
  month="July",
  pages="507--513",
  publisher="Insitute of Metals and Technology",
  address="Ljubljana, Slovenia",
  issn="1580-2949"
}