Casting Process at Roll Bite in Strip Cast Using Vertical-Type High-Speed Twin-Roll Caster
The solidification process in strip casting using a vertical-type high-speed twin-roll caster was clarified by inserting a 0.1 mm diameter K-type thermocouple into a strip during casting. The roll speeds of the copper rolls were 10 m/min and 30 m/min, and the roll loads were 5 kN and 20 kN. Al-Si al...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-07-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/12/7/1169 |
| _version_ | 1797433352011120640 |
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| author | Toshio Haga Yukihiro Kurahashi |
| author_facet | Toshio Haga Yukihiro Kurahashi |
| author_sort | Toshio Haga |
| collection | DOAJ |
| description | The solidification process in strip casting using a vertical-type high-speed twin-roll caster was clarified by inserting a 0.1 mm diameter K-type thermocouple into a strip during casting. The roll speeds of the copper rolls were 10 m/min and 30 m/min, and the roll loads were 5 kN and 20 kN. Al-Si alloys with a Si content of 2%, 6%, and 12% were used to investigate the influence of latent heat and viscosity in the semisolid state. The strip temperature increased after exiting the rolls. This indicated that the inside of the strip had not completely solidified at the roll bite, and secondary cooling was necessary to rapidly solidify the inside of the strip. The distance from the roll bite to the solidification starting position ranged from 30 mm to 63 mm. The cooling rate and degree of supercooling increased as the Si content decreased. The cooling rate ranged from 400 °C/s to 4000 °C/s. The cooling rate and degree of supercooling decreased as the viscosity of the semisolid increased. |
| first_indexed | 2024-03-09T10:15:49Z |
| format | Article |
| id | doaj.art-d4a2a972af6745dba484f1c7a0ced3ea |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-03-09T10:15:49Z |
| publishDate | 2022-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-d4a2a972af6745dba484f1c7a0ced3ea2023-12-01T22:26:32ZengMDPI AGMetals2075-47012022-07-01127116910.3390/met12071169Casting Process at Roll Bite in Strip Cast Using Vertical-Type High-Speed Twin-Roll CasterToshio Haga0Yukihiro Kurahashi1Department of Mechanical Engineering, Osaka Institute of Technology, Omiya Asahi-ku, Osaka 535-8585, JapanGraduate School of Osaka Institute of Technology, Omiya Asahi-ku, Osaka 535-8585, JapanThe solidification process in strip casting using a vertical-type high-speed twin-roll caster was clarified by inserting a 0.1 mm diameter K-type thermocouple into a strip during casting. The roll speeds of the copper rolls were 10 m/min and 30 m/min, and the roll loads were 5 kN and 20 kN. Al-Si alloys with a Si content of 2%, 6%, and 12% were used to investigate the influence of latent heat and viscosity in the semisolid state. The strip temperature increased after exiting the rolls. This indicated that the inside of the strip had not completely solidified at the roll bite, and secondary cooling was necessary to rapidly solidify the inside of the strip. The distance from the roll bite to the solidification starting position ranged from 30 mm to 63 mm. The cooling rate and degree of supercooling increased as the Si content decreased. The cooling rate ranged from 400 °C/s to 4000 °C/s. The cooling rate and degree of supercooling decreased as the viscosity of the semisolid increased.https://www.mdpi.com/2075-4701/12/7/1169twin-roll casterstrip castingaluminum alloycooling ratesupercooling |
| spellingShingle | Toshio Haga Yukihiro Kurahashi Casting Process at Roll Bite in Strip Cast Using Vertical-Type High-Speed Twin-Roll Caster Metals twin-roll caster strip casting aluminum alloy cooling rate supercooling |
| title | Casting Process at Roll Bite in Strip Cast Using Vertical-Type High-Speed Twin-Roll Caster |
| title_full | Casting Process at Roll Bite in Strip Cast Using Vertical-Type High-Speed Twin-Roll Caster |
| title_fullStr | Casting Process at Roll Bite in Strip Cast Using Vertical-Type High-Speed Twin-Roll Caster |
| title_full_unstemmed | Casting Process at Roll Bite in Strip Cast Using Vertical-Type High-Speed Twin-Roll Caster |
| title_short | Casting Process at Roll Bite in Strip Cast Using Vertical-Type High-Speed Twin-Roll Caster |
| title_sort | casting process at roll bite in strip cast using vertical type high speed twin roll caster |
| topic | twin-roll caster strip casting aluminum alloy cooling rate supercooling |
| url | https://www.mdpi.com/2075-4701/12/7/1169 |
| work_keys_str_mv | AT toshiohaga castingprocessatrollbiteinstripcastusingverticaltypehighspeedtwinrollcaster AT yukihirokurahashi castingprocessatrollbiteinstripcastusingverticaltypehighspeedtwinrollcaster |