Publication detail

A FUZZY LOGIC APPROACH FOR OPTIMAL CONTROL OF CONTINUOUS CASTING PROCESS

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

Original Title

A FUZZY LOGIC APPROACH FOR OPTIMAL CONTROL OF CONTINUOUS CASTING PROCESS

Type

conference paper

Language

English

Original Abstract

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.

Keywords

Fuzzy optimization, temperature field, continuous casting, secondary cooling

Authors

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

RIV year

2012

Released

23. 5. 2012

Publisher

TANGER, spol. s r. o.

Location

Ostrava, Czech Republic

ISBN

978-80-87294-29-1

Book

METAL 2012 Conference proceedings

Edition number

1

Pages from

35

Pages to

40

Pages count

6

BibTex

@inproceedings{BUT92201,
  author="Tomáš {Mauder} and Čeněk {Šandera} and Josef {Štětina} and Miloš {Masarik}",
  title="A FUZZY LOGIC APPROACH FOR OPTIMAL CONTROL OF CONTINUOUS CASTING PROCESS",
  booktitle="METAL 2012 Conference proceedings",
  year="2012",
  number="1",
  pages="35--40",
  publisher="TANGER, spol. s r. o.",
  address="Ostrava, Czech Republic",
  isbn="978-80-87294-29-1"
}