Detail publikace
Numerická analýza příčné trhliny v ocelové bramě
KAVIČKA, F. STRÁNSKÝ, K. DOBROVSKÁ, J. SEKANINA, B. ŠTĚTINA, J.
Český název
Numerická analýza příčné trhliny v ocelové bramě
Anglický název
Numerical analysis of a transversal crack in a steel slab
Typ
článek v časopise - ostatní, Jost
Jazyk
en
Originální abstrakt
Two original models have been developed and used in the investigation of a continuously cast low-carbon-steel slab. The first numerical 3D model of the temperature field of a concasting is capable of simulating the temperature field of a caster. Experimental research and data acquisition have to be conducted simultaneously with the numerical computation. The second model of dendritic segregation of elements assesses critical points of slabs from the viewpoint of their increased susceptibility to crack and fissure. In order to apply this model, it is necessary to analyze the heterogeneity of selected elements in characteristic places of the solidifying slab. The model, based on measurement results obtained by an electron micro-probe, generates distribution curves showing the dendritic segregation of the analyzed element, together with the partition coefficients of the elements between the liquid and solid states. The combination of both models enables the prediction of cracks and fissures in critical points of the continuously cast carbon-steel slab.
Český abstrakt
Jsou vyvinuty dva originální modely pro výzkum kontinuálně odlévaných nízkouhlíkových ocelových bram. Prvním modelem je 3D numerický model teplotního pole, upřesněný experimentálním měřením. Druhým modelem je model dendritické segregace prvků. Pro aplikaci tohoto modelu je nutné analyzovat heterogenitu vybraných prvků v charakteristických místech tuhnoucí bramy. Kombinace obou modelů umožňuje predikci vzniku trhlin v kritických místech předlitku.
Anglický abstrakt
Two original models have been developed and used in the investigation of a continuously cast low-carbon-steel slab. The first numerical 3D model of the temperature field of a concasting is capable of simulating the temperature field of a caster. Experimental research and data acquisition have to be conducted simultaneously with the numerical computation. The second model of dendritic segregation of elements assesses critical points of slabs from the viewpoint of their increased susceptibility to crack and fissure. In order to apply this model, it is necessary to analyze the heterogeneity of selected elements in characteristic places of the solidifying slab. The model, based on measurement results obtained by an electron micro-probe, generates distribution curves showing the dendritic segregation of the analyzed element, together with the partition coefficients of the elements between the liquid and solid states. The combination of both models enables the prediction of cracks and fissures in critical points of the continuously cast carbon-steel slab.
Klíčová slova česky
Kontilití, ocelová brama, příčná trhlina, teplotní pole, chemická heterogenita, numerické modely
Klíčová slova anglicky
Concasting, steel slab, cracks, temperature field, chemical heterogeneity, numerical models
Rok RIV
2011
Vydáno
01.09.2011
Místo
Shanghai
ISSN
1708-5284
Ročník
8
Číslo
P 541
Strany od–do
1–2
Počet stran
2
BIBTEX
@article{BUT89870,
author="František {Kavička} and Karel {Stránský} and Jana {Dobrovská} and Bohumil {Sekanina} and Josef {Štětina},
title="Numerical analysis of a transversal crack in a steel slab",
year="2011",
volume="8",
number="P 541",
month="September",
pages="1--2",
address="Shanghai",
issn="1708-5284"
}