Publication detail

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

MAUDER, T. ŠANDERA, Č. ŠTĚTINA, J. ŠEDA, M.

Original Title

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

Type

journal article in Web of Science

Language

English

Original Abstract

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.

Keywords

Firefly algorithm, Temperature field, Enthalpy approach, Continuous casting

Authors

MAUDER, T.; ŠANDERA, Č.; ŠTĚTINA, J.; ŠEDA, M.

RIV year

2011

Released

1. 7. 2011

Publisher

Inštitut za kovinske materiale tehnologije

Location

Lepi pot 11, SI - 1001 Ljubljana Slovenija

ISBN

1580-2949

Periodical

Materiali in tehnologije

Year of study

45

Number

4

State

Republic of Slovenia

Pages from

347

Pages to

350

Pages count

4

BibTex

@article{BUT72807,
  author="Tomáš {Mauder} and Čeněk {Šandera} and Josef {Štětina} and Miloš {Šeda}",
  title="Optimization of Quality of Continuously Cast Steel Slabs by Using Firefly Algorithm",
  journal="Materiali in tehnologije",
  year="2011",
  volume="45",
  number="4",
  pages="347--350",
  issn="1580-2949"
}