Detail publikace

Electromagnetic stirring of the melt for production of the continuously část billets and its importance

STRÁNSKÝ, K. KAVIČKA, F. SEKANINA, B. ŠTĚTINA, J. STRÁNSKÝ, L.

Originální název

Electromagnetic stirring of the melt for production of the continuously část billets and its importance

Typ

článek v časopise - ostatní, Jost

Jazyk

angličtina

Originální abstrakt

Electromagnetic stirring (EMS) suppresses the growth of columnar crystals of billets and reduces the tendency to cracking during casting and at low temperatures. A caster was used for the testing of two induction stirrers - one on the actual mould and the other beneath the mould - to determine the effect of EMS on the formation of the structure of non-alloy steel. As part of these tests, certain parts of the billets had been cast without the use of stirrers and other parts underwent alternate switching on and off of the stirrers for as many as nine combinations of modes. Samples were taken from the sections of these billets, fine-ground and etched in order to make the dendritic structure visible. The mode with the highest efficiency was when both stirrers ran simultaneously. The growth of the columnar crystals, which pointed inward, was limited to ?-to-? of the length of the case when there was no stirring. Experimental research was also confronted with results acquired from the application of the models of the temperature field and chemical heterogeneity and the physical-similarity theory. Statistical monitoring of the quality of concast billets has proven that stirring significantly reduces the occurrence of defects - in this case cracks.

Klíčová slova

continuously cast billets, electromagnetic stirring, temperature field, chemical heterogeneity

Autoři

STRÁNSKÝ, K.; KAVIČKA, F.; SEKANINA, B.; ŠTĚTINA, J.; STRÁNSKÝ, L.

Rok RIV

2009

Vydáno

1. 6. 2009

Nakladatel

Ocelot s.r.o.

Místo

Ostrava

ISSN

0018-8069

Periodikum

Hutnické listy

Ročník

LXII

Číslo

3

Stát

Česká republika

Strany od

26

Strany do

30

Strany počet

5

BibTex

@article{BUT48073,
  author="Karel {Stránský} and František {Kavička} and Bohumil {Sekanina} and Josef {Štětina} and Lubomír {Stránský}",
  title="Electromagnetic stirring of the melt for production of the continuously část billets and its importance",
  journal="Hutnické listy",
  year="2009",
  volume="LXII",
  number="3",
  pages="26--30",
  issn="0018-8069"
}