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Hot mill interstand model and practical applciations. / Paul Andrew Cornelius

Swansea University Author: Paul Andrew Cornelius

Abstract

Hot rolling is a highly complex physical problem. The difficult geometry and the hot deformation behaviour of Carbon strip steels during hot rolling render this process difficult to investigate during normal operations or within the laboratory. Numerical models can therefore be used to further under...

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Published: 2001
Institution: Swansea University
Degree level: Doctoral
URI: https://cronfa.swan.ac.uk/Record/cronfa42553
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first_indexed 2018-08-02T18:54:59Z
last_indexed 2018-08-03T10:10:27Z
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spelling 2018-08-02T16:24:29.6497963 v2 42553 2018-08-02 Hot mill interstand model and practical applciations. 7e089e6a0088593dda6edbdc4795b29a NULL Paul Andrew Cornelius Paul Andrew Cornelius true true 2018-08-02 Hot rolling is a highly complex physical problem. The difficult geometry and the hot deformation behaviour of Carbon strip steels during hot rolling render this process difficult to investigate during normal operations or within the laboratory. Numerical models can therefore be used to further understanding of hot rolling with their ability to predict variables that are difficult or even impossible to measure during normal hot rolling operations. A numerical model has been developed using the commercial ABAQUS Finite-Element software package to consider the effect of process variables such as temperature and microstructural evolution with their consequential effects upon the mechanical behaviour of the strip within a seven stand commercial finishing mill. The roll-gap has been described as a thermal-mechanical coupled plane-strain problem with thermal and microstructural algorithms describing the interstand periods. The hot deformation characteristics of a high Carbon material have also been investigated using multi-deformation testing methods within the laboratory and numerically described using constitutive modelling techniques. The numerical results include multi-pass thermal predictions and the calculation of microstructural evolution between successive deformations for high Carbon, Carbon Manganese and low Carbon strip steels. Rolling parameters such as rolling loads have been predicted as functions of strain, strain rate, temperature and retained strain from previous deformations. Rolling forces and thermal results have been shown to be in reasonable agreement with measured data from trials at the Corus strip mills at Port Talbot and Llanwern, Wales, UK. The research programme has developed constitutive relationships for a high Carbon steel and demonstrated that coupled thermal-mechanical and microstructural algorithms can create sensitive and accurate numerical simulations of commercial hot rolling. E-Thesis Materials science. 31 12 2001 2001-12-31 COLLEGE NANME Engineering COLLEGE CODE Swansea University Doctoral 2018-08-02T16:24:29.6497963 2018-08-02T16:24:29.6497963 Faculty of Science and Engineering School of Engineering and Applied Sciences - Uncategorised Paul Andrew Cornelius NULL 1 0042553-02082018162503.pdf 10805302.pdf 2018-08-02T16:25:03.5800000 Output 10953545 application/pdf E-Thesis true 2018-08-02T16:25:03.5800000 false
title Hot mill interstand model and practical applciations.
spellingShingle Hot mill interstand model and practical applciations.
Paul Andrew Cornelius
title_short Hot mill interstand model and practical applciations.
title_full Hot mill interstand model and practical applciations.
title_fullStr Hot mill interstand model and practical applciations.
title_full_unstemmed Hot mill interstand model and practical applciations.
title_sort Hot mill interstand model and practical applciations.
author_id_str_mv 7e089e6a0088593dda6edbdc4795b29a
author_id_fullname_str_mv 7e089e6a0088593dda6edbdc4795b29a_***_Paul Andrew Cornelius
author Paul Andrew Cornelius
author2 Paul Andrew Cornelius
format E-Thesis
publishDate 2001
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 Hot rolling is a highly complex physical problem. The difficult geometry and the hot deformation behaviour of Carbon strip steels during hot rolling render this process difficult to investigate during normal operations or within the laboratory. Numerical models can therefore be used to further understanding of hot rolling with their ability to predict variables that are difficult or even impossible to measure during normal hot rolling operations. A numerical model has been developed using the commercial ABAQUS Finite-Element software package to consider the effect of process variables such as temperature and microstructural evolution with their consequential effects upon the mechanical behaviour of the strip within a seven stand commercial finishing mill. The roll-gap has been described as a thermal-mechanical coupled plane-strain problem with thermal and microstructural algorithms describing the interstand periods. The hot deformation characteristics of a high Carbon material have also been investigated using multi-deformation testing methods within the laboratory and numerically described using constitutive modelling techniques. The numerical results include multi-pass thermal predictions and the calculation of microstructural evolution between successive deformations for high Carbon, Carbon Manganese and low Carbon strip steels. Rolling parameters such as rolling loads have been predicted as functions of strain, strain rate, temperature and retained strain from previous deformations. Rolling forces and thermal results have been shown to be in reasonable agreement with measured data from trials at the Corus strip mills at Port Talbot and Llanwern, Wales, UK. The research programme has developed constitutive relationships for a high Carbon steel and demonstrated that coupled thermal-mechanical and microstructural algorithms can create sensitive and accurate numerical simulations of commercial hot rolling.
published_date 2001-12-31T03:53:11Z
_version_ 1763752638421139456
score 10.999207

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