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

conference paper

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

2010

Released

15. 11. 2010

Publisher

Institute of Materials and Technology

Location

Ljubljana, Slovenia

ISBN

978-961-92518-2-9

Book

Program and books of abstracts of the 18 th Conference on Materials and Technology

Pages from

45

Pages to

46

Pages count

1

BibTex

@inproceedings{BUT34872,
  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",
  booktitle="Program and books of abstracts of the 18 th Conference on Materials and Technology",
  year="2010",
  pages="45--46",
  publisher="Institute of Materials and Technology",
  address="Ljubljana, Slovenia",
  isbn="978-961-92518-2-9"
}