Detail publikace

FINAL-STRUCTURE PREDICTION OF CONTINUOUSLY CAST BILLETS

ŠTĚTINA, J. KLIMEŠ, L. MAUDER, T. KAVIČKA, F.

Originální název

FINAL-STRUCTURE PREDICTION OF CONTINUOUSLY CAST BILLETS

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

In steel production, controlling and monitoring quality, grade and structure of final steel products are very important issues. It has been shown that the temperature distribution, the magnitude of temperature gradients, as well as the cooling strategy during the continuous steel casting have a significant impact on material properties, the structure and any defect formation of cast products. The paper describes an accurate computational tool intended for investigating the transient phenomena in continuously cast billets, for developing the caster control techniques and also for determining the optimum cooling strategy in order to meet all quality requirements. The numerical model of the temperature field is based on the finite-difference implementation of the 3D energy-balance equation using the enthalpy approach. This allows us to analyse the temperature field along the entire cast billet. Since the steel billets are produced constantly 24 hours per day, the transient temperature field is being computed in a non-stop trial run. It enables us to monitor and investigate the formation of the temperature field in real time within the mould, as well as the secondary and tertiary cooling zones, where the observed information can be immediately utilized for the caster-control optimization with respect to the whole machine or just an individual part. The application of the presented model is demonstrated with two examples including the steelworks in Trinec, Czech Republic, and in Podbrezová, Slovakia. To consider different operational conditions, the influences of the secondary-cooling setting on the surface and the inner defects formation, and on the final structure of the 150 x150 mm billet are also discussed.

Klíčová slova

concast billet, numerical model, solidification

Autoři

ŠTĚTINA, J.; KLIMEŠ, L.; MAUDER, T.; KAVIČKA, F.

Rok RIV

2012

Vydáno

10. 4. 2012

Nakladatel

IMT Ljubljana

Místo

Ljubljana Slovinsko

ISSN

1580-2949

Periodikum

Materiali in tehnologije

Ročník

46

Číslo

2

Stát

Slovinská republika

Strany od

155

Strany do

160

Strany počet

6

BibTex

@article{BUT90525,
  author="Josef {Štětina} and Lubomír {Klimeš} and Tomáš {Mauder} and František {Kavička}",
  title="FINAL-STRUCTURE PREDICTION OF CONTINUOUSLY CAST BILLETS",
  journal="Materiali in tehnologije",
  year="2012",
  volume="46",
  number="2",
  pages="155--160",
  issn="1580-2949"
}