Title:
STEEL CAST SLAB, CONTINUOUS CASTING METHOD, AND METHOD FOR PRODUCING STEEL CAST SLAB
Document Type and Number:
WIPO Patent Application WO/2024/053276
Kind Code:
A1
Abstract:
Provided is a steel cast slab that contains from 2.0 mass% to less than 7.5 mass% of Ni and has few surface cracks. The steel cast slab containing Ni is composed of, in mass%, C: 0.03% to 0.10%, Si: 0.01% to 0.50%, Mn: 0.10% to 1.00%, P: 0.001% to 0.010%, S: 0.0001% to 0.0050%, Ni: 2.0% to less than 7.5%, Al: 0.010% to 0.080%, N: 0.0010% to 0.0050%, and O: 0.0005% to 0.0040%, with the remainder comprising Fe and unavoidable impurities. The density of solidified nuclei in the surface of the steel cast slab is 0.35/mm2 or more.
Inventors:
ITO YOICHI (JP)
NISHINAKA KAZUKI (JP)
ARAMAKI NORICHIKA (JP)
SATO YUYA (JP)
NISHINAKA KAZUKI (JP)
ARAMAKI NORICHIKA (JP)
SATO YUYA (JP)
Application Number:
PCT/JP2023/027675
Publication Date:
March 14, 2024
Filing Date:
July 28, 2023
Export Citation:
Assignee:
JFE STEEL CORP (JP)
International Classes:
B22D11/00; B22D11/108; B22D11/12; B22D11/16; C21D8/02; C21D9/00; C22C38/00; C22C38/08; C22C38/54
Foreign References:
| JP2009248099A | 2009-10-29 | |||
| JP2001081516A | 2001-03-27 | |||
| JPS5726141A | 1982-02-12 | |||
| JPH0810919A | 1996-01-16 | |||
| JPH01228644A | 1989-09-12 | |||
| JPH02250917A | 1990-10-08 |
Attorney, Agent or Firm:
KUMASAKA Akira et al. (JP)
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