Twin Roll Caster for Clad Strip

Production of aluminum alloy clad strips requires many processes, and a reduction in the number of processes has long been demanded. A method to cast clad strips directly from molten metal using a twin roll caster with copper rolls is proposed in this work. Two types of twin roll casters were design...

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Main Author: Toshio Haga
Format: Article
Language:English
Published: MDPI AG 2021-05-01
Series:Metals
Subjects:
Online Access:https://www.mdpi.com/2075-4701/11/5/776
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author Toshio Haga
author_facet Toshio Haga
author_sort Toshio Haga
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description Production of aluminum alloy clad strips requires many processes, and a reduction in the number of processes has long been demanded. A method to cast clad strips directly from molten metal using a twin roll caster with copper rolls is proposed in this work. Two types of twin roll casters were designed and tested. One was a vertical-type tandem twin roll caster and the other was a twin roll caster equipped with a scraper. The casting of the clad strips was conducted in an oxidizing atmosphere. The clad strips were cast at speeds higher than 15 m/min. This casting speed is much higher than that of conventional twin roll casters for aluminum alloys. The roll load was smaller than 0.2 kN/mm. This small roll load means that strips were not bonded by hot rolling. The clad strips had a clear interface between strips, and elements in each strip did not diffuse into other strips. The clad strips did not fracture at the interface in a tension shear test. This means that the clad strips were strongly bonded.
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spelling doaj.art-db63efb93f0a448686341dbbf255d6672023-11-21T18:59:06ZengMDPI AGMetals2075-47012021-05-0111577610.3390/met11050776Twin Roll Caster for Clad StripToshio Haga0Department of Mechanical Engineering, Faculty of Engineering, Osaka Institute of Technology, 5-16-1 Omiya Asahi-Ku, Osaka 535-8585, JapanProduction of aluminum alloy clad strips requires many processes, and a reduction in the number of processes has long been demanded. A method to cast clad strips directly from molten metal using a twin roll caster with copper rolls is proposed in this work. Two types of twin roll casters were designed and tested. One was a vertical-type tandem twin roll caster and the other was a twin roll caster equipped with a scraper. The casting of the clad strips was conducted in an oxidizing atmosphere. The clad strips were cast at speeds higher than 15 m/min. This casting speed is much higher than that of conventional twin roll casters for aluminum alloys. The roll load was smaller than 0.2 kN/mm. This small roll load means that strips were not bonded by hot rolling. The clad strips had a clear interface between strips, and elements in each strip did not diffuse into other strips. The clad strips did not fracture at the interface in a tension shear test. This means that the clad strips were strongly bonded.https://www.mdpi.com/2075-4701/11/5/776clad striphigh-speed twin roll casterscraperaluminum alloyinterface
spellingShingle Toshio Haga
Twin Roll Caster for Clad Strip
Metals
clad strip
high-speed twin roll caster
scraper
aluminum alloy
interface
title Twin Roll Caster for Clad Strip
title_full Twin Roll Caster for Clad Strip
title_fullStr Twin Roll Caster for Clad Strip
title_full_unstemmed Twin Roll Caster for Clad Strip
title_short Twin Roll Caster for Clad Strip
title_sort twin roll caster for clad strip
topic clad strip
high-speed twin roll caster
scraper
aluminum alloy
interface
url https://www.mdpi.com/2075-4701/11/5/776
work_keys_str_mv AT toshiohaga twinrollcasterforcladstrip