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Permanent link (DOI): https://doi.org/10.7939/R3PH1M

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Optimization of Steel Microstructure during Lamniar Cooling Open Access

Descriptions

Other title
Subject/Keyword
Steel, Run out table, Laminar Cooling, Optimization, Genetic Algorithms, PSO, Branch and Bound
Type of item
Thesis
Degree grantor
University of Alberta
Author or creator
Bineshmarvasti, Baher
Supervisor and department
Ben-Zvi, Amos (Chemical and Materials Engineering)
Henein, Hani (Chemical and Materials Engineering)
Examining committee member and department
Adeeb, Samer (Civil and Environmental Engineering)
Department
Department of Chemical and Materials Engineering
Specialization

Date accepted
2011-08-30T17:30:45Z
Graduation date
2011-11
Degree
Master of Science
Degree level
Master's
Abstract
Optimization techniques, in conjunction with a finite element thermal model, are used in this thesis to optimize the temperature profile (i.e. cooling rate and coiling temperature) of a steel skelp during laminar cooling. Optimization parameters include skelp velocity, laminar cooling bank configuration, as well as side-spray conditions. The optimization techniques include two stochastic optimization methods (Genetic Algorithms and Particle swarm optimization) and one deterministic method (The branch-and-bound). A comparison between optimization methods showed that the branch-and-bound method can achieve global optimum faster than the stochastic techniques. The branch-and-bound method was used to set the coiling temperature, using three different cooling strategies (early, late and constant cooling), to reach the specified coiling temperature (550°C). Also the temperature profile optimizations was done, in order to maximize volume of the steel strip, which cool through a desired zone in Continues cooling transformation diagram, was done using branch-and-bound method.
Language
English
DOI
doi:10.7939/R3PH1M
Rights
Permission is hereby granted to the University of Alberta Libraries to reproduce single copies of this thesis and to lend or sell such copies for private, scholarly or scientific research purposes only. Where the thesis is converted to, or otherwise made available in digital form, the University of Alberta will advise potential users of the thesis of these terms. The author reserves all other publication and other rights in association with the copyright in the thesis and, except as herein before provided, neither the thesis nor any substantial portion thereof may be printed or otherwise reproduced in any material form whatsoever without the author's prior written permission.
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