Study of the Influence of Intermix Conditions on Steel Cleanliness
Modern steel plants produce today a large portfolio of various steel grades, many for end-uses demanding high quality. In order to utilize the maximum productivity of the continuous-casting machine, it is sometimes necessary to cast steel grades with different chemical compositions in one sequence....
Main Authors: | , , , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
MDPI AG
2018-10-01
|
Series: | Metals |
Subjects: | |
Online Access: | http://www.mdpi.com/2075-4701/8/10/852 |
id |
doaj-fb330e1ed33e436e9252e7552b91077d |
---|---|
record_format |
Article |
spelling |
doaj-fb330e1ed33e436e9252e7552b91077d2020-11-24T23:43:17ZengMDPI AGMetals2075-47012018-10-0181085210.3390/met8100852met8100852Study of the Influence of Intermix Conditions on Steel CleanlinessBranislav Bul’ko0Marek Molnár1Peter Demeter2Dana Baricová3Alena Pribulová4Peter Futáš5Faculty of Metallurgy, Technical University of Košice, Institute of Metallurgy, Department of Metallurgy and Foundry, 042 00 Košice, SlovakiaU. S. Steel Košice, s.r.o., Vstupný areál U. S. Steel, 044 54 Košice, SlovakiaFaculty of Metallurgy, Technical University of Košice, Institute of Metallurgy, Department of Metallurgy and Foundry, 042 00 Košice, SlovakiaFaculty of Metallurgy, Technical University of Košice, Institute of Metallurgy, Department of Metallurgy and Foundry, 042 00 Košice, SlovakiaFaculty of Metallurgy, Technical University of Košice, Institute of Metallurgy, Department of Metallurgy and Foundry, 042 00 Košice, SlovakiaFaculty of Metallurgy, Technical University of Košice, Institute of Metallurgy, Department of Metallurgy and Foundry, 042 00 Košice, SlovakiaModern steel plants produce today a large portfolio of various steel grades, many for end-uses demanding high quality. In order to utilize the maximum productivity of the continuous-casting machine, it is sometimes necessary to cast steel grades with different chemical compositions in one sequence. It is important, therefore, to know the possibilities of a specific continuous-casting machine to make the Intermix connections as short as possible. Any interference with established procedures may, however, have a negative impact on the cleanliness of the cast steel. Using physical and numerical simulation tools, it was found that reducing the steel level in the tundish during the exchange of ladles makes it possible to shorten the transition zone. However, when the steel level is reduced, the flow of steel is impaired, which can have a negative effect on the cleanliness of the cast steel and, in extreme cases, may even lead to entrapment of slag in the mold. The cleanliness of cast steel was evaluated using one of the most advanced tools for automatic steel cleanliness evaluation, AZtecFeature (Oxford Instruments, Abingdon, UK), which enables determination of the type, size, distribution, and shape, as well as the chemical composition, of individual types of non-metal inclusions.http://www.mdpi.com/2075-4701/8/10/852continuous castingtundishresidence timetransient casting |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Branislav Bul’ko Marek Molnár Peter Demeter Dana Baricová Alena Pribulová Peter Futáš |
spellingShingle |
Branislav Bul’ko Marek Molnár Peter Demeter Dana Baricová Alena Pribulová Peter Futáš Study of the Influence of Intermix Conditions on Steel Cleanliness Metals continuous casting tundish residence time transient casting |
author_facet |
Branislav Bul’ko Marek Molnár Peter Demeter Dana Baricová Alena Pribulová Peter Futáš |
author_sort |
Branislav Bul’ko |
title |
Study of the Influence of Intermix Conditions on Steel Cleanliness |
title_short |
Study of the Influence of Intermix Conditions on Steel Cleanliness |
title_full |
Study of the Influence of Intermix Conditions on Steel Cleanliness |
title_fullStr |
Study of the Influence of Intermix Conditions on Steel Cleanliness |
title_full_unstemmed |
Study of the Influence of Intermix Conditions on Steel Cleanliness |
title_sort |
study of the influence of intermix conditions on steel cleanliness |
publisher |
MDPI AG |
series |
Metals |
issn |
2075-4701 |
publishDate |
2018-10-01 |
description |
Modern steel plants produce today a large portfolio of various steel grades, many for end-uses demanding high quality. In order to utilize the maximum productivity of the continuous-casting machine, it is sometimes necessary to cast steel grades with different chemical compositions in one sequence. It is important, therefore, to know the possibilities of a specific continuous-casting machine to make the Intermix connections as short as possible. Any interference with established procedures may, however, have a negative impact on the cleanliness of the cast steel. Using physical and numerical simulation tools, it was found that reducing the steel level in the tundish during the exchange of ladles makes it possible to shorten the transition zone. However, when the steel level is reduced, the flow of steel is impaired, which can have a negative effect on the cleanliness of the cast steel and, in extreme cases, may even lead to entrapment of slag in the mold. The cleanliness of cast steel was evaluated using one of the most advanced tools for automatic steel cleanliness evaluation, AZtecFeature (Oxford Instruments, Abingdon, UK), which enables determination of the type, size, distribution, and shape, as well as the chemical composition, of individual types of non-metal inclusions. |
topic |
continuous casting tundish residence time transient casting |
url |
http://www.mdpi.com/2075-4701/8/10/852 |
work_keys_str_mv |
AT branislavbulko studyoftheinfluenceofintermixconditionsonsteelcleanliness AT marekmolnar studyoftheinfluenceofintermixconditionsonsteelcleanliness AT peterdemeter studyoftheinfluenceofintermixconditionsonsteelcleanliness AT danabaricova studyoftheinfluenceofintermixconditionsonsteelcleanliness AT alenapribulova studyoftheinfluenceofintermixconditionsonsteelcleanliness AT peterfutas studyoftheinfluenceofintermixconditionsonsteelcleanliness |
_version_ |
1725502204161294336 |