COMPARISON OF TEMPERATURE AND MECHANICAL STRESS-STRAIN DISTRIBUTIONS OF STEEL BILLETS WITH SHARP AND ROUNDED CORNERS

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F20%3APU137382" target="_blank" >RIV/00216305:26210/20:PU137382 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.37904/metal.2020.3443" target="_blank" >http://dx.doi.org/10.37904/metal.2020.3443</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.37904/metal.2020.3443" target="_blank" >10.37904/metal.2020.3443</a>

Jazyk výsledku

angličtina

Název v původním jazyce

COMPARISON OF TEMPERATURE AND MECHANICAL STRESS-STRAIN DISTRIBUTIONS OF STEEL BILLETS WITH SHARP AND ROUNDED CORNERS

Popis výsledku v původním jazyce

Monitoring and evaluation of temperature distribution in continuous steel casting coupled with optimal temperature intervals providing no defects can be used for the prediction of crack formation in the cast strand. Crack locations can be further specified with the use of mechanical stress-strain distribution model. These crack locations are strongly dependent on the zero ductility temperature (ZDT) and the liquid impenetrable temperature (LIT). To avoid the excessive stress and strain distribution in the steel, parts of the strand where bending and unbending take place should not be in ZDT and LIT intervals. Thus, the casting speed and water flow rates through cooling nozzles have to be modified to avoid these crack sensitive temperature intervals where the stress exceeds its maximum allowable value determined from the crack criteria. In this paper, the thermal solidification and mechanical stress-strain distribution models of billets with sharp and rounded corners for structural steel grades S355 are presented and the results are compared. Further, the idea of coupling between thermal and mechanical models is presented, which serves as a base for a crack predictive model assessing the quality of cast semi-products.

Název v anglickém jazyce

COMPARISON OF TEMPERATURE AND MECHANICAL STRESS-STRAIN DISTRIBUTIONS OF STEEL BILLETS WITH SHARP AND ROUNDED CORNERS

Popis výsledku anglicky

Monitoring and evaluation of temperature distribution in continuous steel casting coupled with optimal temperature intervals providing no defects can be used for the prediction of crack formation in the cast strand. Crack locations can be further specified with the use of mechanical stress-strain distribution model. These crack locations are strongly dependent on the zero ductility temperature (ZDT) and the liquid impenetrable temperature (LIT). To avoid the excessive stress and strain distribution in the steel, parts of the strand where bending and unbending take place should not be in ZDT and LIT intervals. Thus, the casting speed and water flow rates through cooling nozzles have to be modified to avoid these crack sensitive temperature intervals where the stress exceeds its maximum allowable value determined from the crack criteria. In this paper, the thermal solidification and mechanical stress-strain distribution models of billets with sharp and rounded corners for structural steel grades S355 are presented and the results are compared. Further, the idea of coupling between thermal and mechanical models is presented, which serves as a base for a crack predictive model assessing the quality of cast semi-products.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20303 - Thermodynamics

Projekt

<a href="/cs/project/GA19-20802S" target="_blank" >GA19-20802S: Spojený tepelně-mechanický model tuhnutí oceli pro predikci vzniku trhlin v reálném čase</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2020

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

METAL - 2020 - 29th International Conference on Metallurgy and Materials

ISBN

9788087294970

ISSN

—

e-ISSN

—

Počet stran výsledku

6

Strana od-do

51-56

Název nakladatele

TANGER Ltd.

Místo vydání

neuveden

Místo konání akce

Brno

Datum konání akce

23. 6. 2020

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000794331100006