Title:
METHOD FOR PRODUCING THIN SILICON STEEL STRIP
Document Type and Number:
WIPO Patent Application WO/2023/100765
Kind Code:
A1
Abstract:
Provided is a method for producing a thin silicon steel strip that includes a silicon content of 6.5% and is produced by cold rolling silicon steel with a silicon content in a range of 4.0-8.0%. The method 1 for producing a thin silicon steep strip includes a rapid liquid cooling step P2 in which a rapidly cooled 6.5% silicon steel ribbon in the form of a strip is formed, and a cold rolling step P3 in which the rapidly cooled ribbon is subjected to cold rolling and made to plastically deform into a thin 6.5% silicon steel strip. In the rapid liquid cooling step P2, a molten alloy obtained by melting 6.5% silicon steel billets including 6.5 weight% of silicon in iron is solidified by a single-roll rapid cooling method in which said molten alloy is sprayed onto the cylindrical surface of a rotating roll and rapidly cooled, thereby forming the rapidly cooled ribbon in the form of a strip. In the cold rolling step P3, the rapidly cooled ribbon formed by the rapid liquid cooling step P2 is subjected to cold rolling and made to plastically deform into a rolled steel strip which is a thin 6.5% silicon steel strip.
Inventors:
FUJISAKI KEISUKE (JP)
TANASE JUMPEI (JP)
TSUCHIDA EIJI (JP)
TSUCHIDA YUICHIRO (JP)
KAMIMURA TAKUYA (JP)
ISHIYAMA KAZUSHI (JP)
TANASE JUMPEI (JP)
TSUCHIDA EIJI (JP)
TSUCHIDA YUICHIRO (JP)
KAMIMURA TAKUYA (JP)
ISHIYAMA KAZUSHI (JP)
Application Number:
PCT/JP2022/043540
Publication Date:
June 08, 2023
Filing Date:
November 25, 2022
Export Citation:
Assignee:
TOYOTA SCHOOL FOUND (JP)
MARUYOSHI KOGYO CO LTD (JP)
UNIV TOHOKU (JP)
MARUYOSHI KOGYO CO LTD (JP)
UNIV TOHOKU (JP)
International Classes:
B21B3/02; B22D11/00; B22D11/06; C21D8/12; C22C38/00; C22C38/02; H01F1/147
Foreign References:
| JPH04217398A | 1992-08-07 | |||
| JPS6021328A | 1985-02-02 | |||
| JPS60234949A | 1985-11-21 | |||
| CN104046758A | 2014-09-17 |
Other References:
YUKUMOTO MASAO: "Study of Twin Roll-Method Rapid Cooling Thin Band Manufacture Process for Hardly Workable Materials", DOCTORAL THESIS, OSAKA UNIVERSITY, 1 January 1997 (1997-01-01), Osaka University, XP093068680, Retrieved from the Internet [retrieved on 20230730], DOI: 10.11501/3129278
Attorney, Agent or Firm:
SANO Hiroshi et al. (JP)
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