Title:
CONTINUOUS CASTING SLAB AND METHOD FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2023/218787
Kind Code:
A1
Abstract:
The present invention provides: a continuous casting slab in which season cracking does not occur while cooling, even when the continuous casting slab has a low toughness; and a method for manufacturing the same. A continuous casting slab for high-strength steel, characterized in that: the average prior austenite grain size at a 10-mm position from the continuous casting slab surface layer is 0.5-2.0 mm inclusive; and the microstructure is such that the total of the area ratio of ferrite and the area ratio of perlite is 90% or more and the area ratio of ferrite is below 5% or 10% or more.
Inventors:
ODAGAKI TOMOYA (JP)
KAWASAKI TAIKI (JP)
TSUZUMI KENJI (JP)
TANAKA KOTARO (JP)
MURATA MAKOTO (JP)
FUNAHASHI MASASHI (JP)
KAWASAKI TAIKI (JP)
TSUZUMI KENJI (JP)
TANAKA KOTARO (JP)
MURATA MAKOTO (JP)
FUNAHASHI MASASHI (JP)
Application Number:
PCT/JP2023/012746
Publication Date:
November 16, 2023
Filing Date:
March 29, 2023
Export Citation:
Assignee:
JFE STEEL CORP (JP)
International Classes:
C22C38/00; C21D1/00; C21D9/00; C22C38/04; C22C38/60
Foreign References:
| JP2007181861A | 2007-07-19 | |||
| JP2019167560A | 2019-10-03 | |||
| JP2019167559A | 2019-10-03 | |||
| JP2020139210A | 2020-09-03 |
Attorney, Agent or Firm:
GINZA MARONIE P.C. (JP)
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