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Examination of the factors affecting quality on continuous annealing processing lines. / Paul Saunders

Swansea University Author: Paul Saunders

Abstract

The Continuous Annealing Processing Line (CAPL) of the Corus Strip Products UK integrated works in South Wales, United Kingdom, is one of the most modern lines of its type in the world. It produces thin and wide carbon strip steels of the highest quality in terms of metallurgical consistency, surfac...

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Published: 2008
Institution: Swansea University
Degree level: Doctoral
Degree name: EngD
URI: https://cronfa.swan.ac.uk/Record/cronfa42366
first_indexed 2018-08-02T18:54:32Z
last_indexed 2018-08-03T10:09:57Z
id cronfa42366
recordtype RisThesis
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spelling 2018-08-02T16:24:28.9789956 v2 42366 2018-08-02 Examination of the factors affecting quality on continuous annealing processing lines. 5e08599b6da6c68c2bdf39a8ad09bcea NULL Paul Saunders Paul Saunders true true 2018-08-02 The Continuous Annealing Processing Line (CAPL) of the Corus Strip Products UK integrated works in South Wales, United Kingdom, is one of the most modern lines of its type in the world. It produces thin and wide carbon strip steels of the highest quality in terms of metallurgical consistency, surface quality and dimensional tolerances. Tensioned strip can travel at a velocity of up to 600m/min at temperatures in excess of 750&deg;C. The yield point of the strip is naturally reduced at these annealing temperatures; therefore the contact interaction that develops between the transport roll and the strip steel it is transporting is critical. The primary focus of research is on maintaining the elasticity of the strip steel as it passes through the furnace section of the continuous annealing processing line. In particular focusing on the heating and adjacent soaking sections of the CAPL, where the temperatures are at their highest. The thesis is concerned with the roll-strip interaction and its many different parameters - roll geometry, strip dimensions, strip tension and strip temperature. Research concentrated on the initial contact plane, where the strip first comes into contact with the transport roll. Results indicate that the strip's elastic stress- state is most affected by the fillet that circumnavigates the transport roll, especially where the fillet intersects the initial contact plane. The parameters chosen took into consideration the future operational commitments of the CAPL, because continual demand is always increasing the threshold. To perform the task assigned the author made use of extensive computational finite element method models. A second aspect of the research was to consider acceptable temperature differentials between the transport roll and the strip steel at initial contact. The strip has a low yield stress at its annealing temperature, thus an excessively high temperature differential will create a buckle risk. Therefore, an experimental programme was developed in conjunction with industrial partners Stein Heurtey to investigate acceptable temperature differentials for initial contact conditions. E-Thesis Materials science. 31 12 2008 2008-12-31 COLLEGE NANME Engineering COLLEGE CODE Swansea University Doctoral EngD 2018-08-02T16:24:28.9789956 2018-08-02T16:24:28.9789956 Faculty of Science and Engineering School of Engineering and Applied Sciences - Uncategorised Paul Saunders NULL 1 0042366-02082018162448.pdf 10798074.pdf 2018-08-02T16:24:48.7770000 Output 17648867 application/pdf E-Thesis true 2018-08-02T16:24:48.7770000 false
title Examination of the factors affecting quality on continuous annealing processing lines.
spellingShingle Examination of the factors affecting quality on continuous annealing processing lines.
Paul Saunders
title_short Examination of the factors affecting quality on continuous annealing processing lines.
title_full Examination of the factors affecting quality on continuous annealing processing lines.
title_fullStr Examination of the factors affecting quality on continuous annealing processing lines.
title_full_unstemmed Examination of the factors affecting quality on continuous annealing processing lines.
title_sort Examination of the factors affecting quality on continuous annealing processing lines.
author_id_str_mv 5e08599b6da6c68c2bdf39a8ad09bcea
author_id_fullname_str_mv 5e08599b6da6c68c2bdf39a8ad09bcea_***_Paul Saunders
author Paul Saunders
author2 Paul Saunders
format E-Thesis
publishDate 2008
institution Swansea University
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Engineering and Applied Sciences - Uncategorised{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Uncategorised
document_store_str 1
active_str 0
description The Continuous Annealing Processing Line (CAPL) of the Corus Strip Products UK integrated works in South Wales, United Kingdom, is one of the most modern lines of its type in the world. It produces thin and wide carbon strip steels of the highest quality in terms of metallurgical consistency, surface quality and dimensional tolerances. Tensioned strip can travel at a velocity of up to 600m/min at temperatures in excess of 750&deg;C. The yield point of the strip is naturally reduced at these annealing temperatures; therefore the contact interaction that develops between the transport roll and the strip steel it is transporting is critical. The primary focus of research is on maintaining the elasticity of the strip steel as it passes through the furnace section of the continuous annealing processing line. In particular focusing on the heating and adjacent soaking sections of the CAPL, where the temperatures are at their highest. The thesis is concerned with the roll-strip interaction and its many different parameters - roll geometry, strip dimensions, strip tension and strip temperature. Research concentrated on the initial contact plane, where the strip first comes into contact with the transport roll. Results indicate that the strip's elastic stress- state is most affected by the fillet that circumnavigates the transport roll, especially where the fillet intersects the initial contact plane. The parameters chosen took into consideration the future operational commitments of the CAPL, because continual demand is always increasing the threshold. To perform the task assigned the author made use of extensive computational finite element method models. A second aspect of the research was to consider acceptable temperature differentials between the transport roll and the strip steel at initial contact. The strip has a low yield stress at its annealing temperature, thus an excessively high temperature differential will create a buckle risk. Therefore, an experimental programme was developed in conjunction with industrial partners Stein Heurtey to investigate acceptable temperature differentials for initial contact conditions.
published_date 2008-12-31T04:23:29Z
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score 11.089572

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