Title:
APPARATUS FOR MANUFACTURING THIN STEEL SHEET, AND METHOD FOR MANUFACTURING THIN STEEL SHEET
Document Type and Number:
WIPO Patent Application WO/2020/100729
Kind Code:
A1
Abstract:
Using an apparatus for manufacturing a thin steel sheet, in which a continuous casting device (1) for a thin cast slab having a cast slab thickness of 70 mm to 120 mm at the lower end of a mold, a holding furnace (2) for maintaining the temperature of, and/or heating, a cast slab (10), and a rolling stand (3) for performing finish rolling are arranged in this order, the casting speed of the thin cast slab is set to 4-7 m/min, the cast slab (10) is reduced at a reduction ratio of 30% or greater by reducing rolls (4) after solidification is completed and with the center temperature of the cast slab being 1300°C or higher, and the cast slab (10) is held in the holding furnace (2) for at least 5 minutes at a temperature of 1150°C to 1300°C.
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Inventors:
TAKAYAMA TAKUYA (JP)
HARADA HIROSHI (JP)
YAMADA KENJI (JP)
SAKAMOTO MASASHI (JP)
HARADA HIROSHI (JP)
YAMADA KENJI (JP)
SAKAMOTO MASASHI (JP)
Application Number:
PCT/JP2019/043817
Publication Date:
May 22, 2020
Filing Date:
November 08, 2019
Export Citation:
Assignee:
NIPPON STEEL CORP (JP)
International Classes:
C21D9/46; B21B1/00; B21B1/46; B22D11/00; B22D11/12; B22D11/128; C22C38/00; C22C38/58
Foreign References:
| JPH03504572A | 1991-10-09 | |||
| JPH07204708A | 1995-08-08 | |||
| JPH0515904A | 1993-01-26 | |||
| JPH07308701A | 1995-11-28 | |||
| JP2009508691A | 2009-03-05 | |||
| JPH11239851A | 1999-09-07 | |||
| JP2015217392A | 2015-12-07 | |||
| JP2015006680A | 2015-01-15 | |||
| JPH11239804A | 1999-09-07 |
Attorney, Agent or Firm:
TANAI Sumio et al. (JP)
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