University of Illinois Urbana-Champaign

Customization and control of metallurgical length during speed drop in continuous steel casting

Patkar, Abhishek

This item is only available for download by members of the University of Illinois community. Students, faculty, and staff at the U of I may log in with your NetID and password to view the item. If you are trying to access an Illinois-restricted dissertation or thesis, you can request a copy through your library's Inter-Library Loan office or purchase a copy directly from ProQuest.

Permalink

https://hdl.handle.net/2142/100025

Description

Title
Customization and control of metallurgical length during speed drop in continuous steel casting
Author(s)
Patkar, Abhishek
Contributor(s)
Bentsman, Joseph
Issue Date
2018-05
Keyword(s)
  • CON1D
  • CONONLINE
  • Metallurgical Length
Abstract
Continuous steel casting is widely used to manufacture steel. Metallurgical length is a process variable that plays an important role in determining the final product quality. In the first part of this thesis, CON1D, a simple but comprehensive heat transfer and solidification model and CONONLINE, a real-time dynamic version based on the CON1D model are introduced. Based on real-time caster data available, CON1D is validated at medium slab caster at Nucor Tuscaloosa. The use of CON1D to customize CONONLINE is demonstrated. Lastly, CONONLINE (off-line version) is shown to successfully distinguish between a whale and a no-whale situation. In the second half of this thesis, the use of spray table control and two-step bang-bang control to minimize metallurgical length deviation during a sudden speed drop at a thin slab caster is studied. The two-step bang-bang control method performs better in terms of controlling the metallurgical length than the widely used spray table control method. The maximum metallurgical length deviation under two-step bang-bang control is 0.36 m while that under spray table control is 0.44 m. However, the rises in the surface temperature for the two-step bang-bang control are more abrupt than those for the surface temperature under spray table control.
Type of Resource
text
Language
en
Permalink
http://hdl.handle.net/2142/100025

Owning Collections

Senior Theses - Electrical and Computer Engineering PRIMARY
The best of ECE undergraduate research