Optimization of Quality of Continuously Cast Steel Slabs by Using Firefly Algorithm

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F11%3APU93185" target="_blank" >RIV/00216305:26210/11:PU93185 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Optimization of Quality of Continuously Cast Steel Slabs by Using Firefly Algorithm

Popis výsledku v původním jazyce

An ambition to increase both the productivity and the final product quality, in continuous casting process, led us to study new effective mathematical approaches. The quality of steel produced by continuous casting process is influenced by number of controlled factors as a casting speed or cooling rates. Appropriate setting of these factors is usually done by expert estimates and expensive experimental runs. This paper describes an algorithm for obtaining black-box type solution which maintains high production rate and high quality of products as well. The core of the algorithm is our original numerical model of 2D temperature field designed for real caster geometry. This mathematical model contains Fourier-Kirchhoff equation, including boundary conditions. The presence of phase and structural changes is modeled by an enthalpy computed from chemical composition of steel. The optimization part is performed by recently created heuristic method, so-called Firefly algorithm, where the principles of searching for optimal values are inspired by biological behavior of fireflies. By combining the numerical model and heuristic optimization we are able to set the controlled values and to obtain high quality steel which satisfies constrains for prescribed metallurgical length, core and surface temperatures. This approach can be easily utilized for arbitrary class of steel only by changing chemical composition in the numerical model. The results of simulations can be validated by real historical data in purpose to reach relationship between temperature field and final product quality.

Název v anglickém jazyce

Optimization of Quality of Continuously Cast Steel Slabs by Using Firefly Algorithm

Popis výsledku anglicky

An ambition to increase both the productivity and the final product quality, in continuous casting process, led us to study new effective mathematical approaches. The quality of steel produced by continuous casting process is influenced by number of controlled factors as a casting speed or cooling rates. Appropriate setting of these factors is usually done by expert estimates and expensive experimental runs. This paper describes an algorithm for obtaining black-box type solution which maintains high production rate and high quality of products as well. The core of the algorithm is our original numerical model of 2D temperature field designed for real caster geometry. This mathematical model contains Fourier-Kirchhoff equation, including boundary conditions. The presence of phase and structural changes is modeled by an enthalpy computed from chemical composition of steel. The optimization part is performed by recently created heuristic method, so-called Firefly algorithm, where the principles of searching for optimal values are inspired by biological behavior of fireflies. By combining the numerical model and heuristic optimization we are able to set the controlled values and to obtain high quality steel which satisfies constrains for prescribed metallurgical length, core and surface temperatures. This approach can be easily utilized for arbitrary class of steel only by changing chemical composition in the numerical model. The results of simulations can be validated by real historical data in purpose to reach relationship between temperature field and final product quality.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

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

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2011

Kód důvěrnosti údajů

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

Název periodika

Materiali in tehnologije

ISSN

1580-2949

e-ISSN

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Svazek periodika

45

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

SI - Slovinská republika

Počet stran výsledku

4

Strana od-do

347-350

Kód UT WoS článku

000294086000009

EID výsledku v databázi Scopus

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