A FUZZY LOGIC APPROACH FOR OPTIMAL CONTROL OF CONTINUOUS CASTING PROCESS

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

A FUZZY LOGIC APPROACH FOR OPTIMAL CONTROL OF CONTINUOUS CASTING PROCESS

Popis výsledku v původním jazyce

Nowadays the continuous casting is used for providing almost one hundred percent of world steel production. A wide range of steel grades is continuously cast with high-quality achievements. The solidifying steel, during its pass through the caster, is subjected to variable thermal conditions and mechanical loading, both of which contribute to the material stresses and strains, the main sources of the defects. Some of these defects might be eliminated by a preceding computer simulation, optimization and subsequent control of the casting process. This paper describes an original algorithm for obtaining such control parameters which ensure the high production rate and the high quality of products as well. This algorithm is based on the keeping surface and core temperatures in the specific ranges corresponding with ductility of steel. The core of the algorithm is our original three-dimensional numerical model of temperature field where heat and mass transfer phenomenon including phase changes is deal with. Geometry and specifications of the caster are taken from the real caster operating in EVRAZ VÍTKOVICE STEEL, a.s. This model is verified by pyrometers measurements. The optimization part lies above the numerical model and iteratively improves the input parameters (casting speed and cooling rates) in order to reach desired surface and core temperatures. The optimization algorithm is performed by our fuzzy-logic interface and runs in off-line version. Its results can be used as a preparation tool for the real casting process.

Název v anglickém jazyce

A FUZZY LOGIC APPROACH FOR OPTIMAL CONTROL OF CONTINUOUS CASTING PROCESS

Popis výsledku anglicky

Nowadays the continuous casting is used for providing almost one hundred percent of world steel production. A wide range of steel grades is continuously cast with high-quality achievements. The solidifying steel, during its pass through the caster, is subjected to variable thermal conditions and mechanical loading, both of which contribute to the material stresses and strains, the main sources of the defects. Some of these defects might be eliminated by a preceding computer simulation, optimization and subsequent control of the casting process. This paper describes an original algorithm for obtaining such control parameters which ensure the high production rate and the high quality of products as well. This algorithm is based on the keeping surface and core temperatures in the specific ranges corresponding with ductility of steel. The core of the algorithm is our original three-dimensional numerical model of temperature field where heat and mass transfer phenomenon including phase changes is deal with. Geometry and specifications of the caster are taken from the real caster operating in EVRAZ VÍTKOVICE STEEL, a.s. This model is verified by pyrometers measurements. The optimization part lies above the numerical model and iteratively improves the input parameters (casting speed and cooling rates) in order to reach desired surface and core temperatures. The optimization algorithm is performed by our fuzzy-logic interface and runs in off-line version. Its results can be used as a preparation tool for the real casting process.

Druh

D - Stať ve sborníku

CEP obor

JG - Hutnictví, kovové materiály

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2012

Kód důvěrnosti údajů

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

Název statě ve sborníku

METAL 2012 Conference proceedings

ISBN

978-80-87294-29-1

ISSN

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e-ISSN

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Počet stran výsledku

6

Strana od-do

35-40

Název nakladatele

TANGER, spol. s r. o.

Místo vydání

Ostrava, Czech Republic

Místo konání akce

Brno

Datum konání akce

23. 5. 2012

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000318506500020