Title:
AUSTENITIC STAINLESS STEEL AND MANUFACTURING METHOD THEREOF
Document Type and Number:
WIPO Patent Application WO/2020/251002
Kind Code:
A1
Abstract:
This method involves a coarse hot rolling step for performing coarse hot rolling after heating a slab manufactured by continuous casting to 1000-1300°C, a finish hot rolling step for performing finish hot rolling on the manufactured steel strip after the coarse hot rolling step, and a cooling step for cooling the steel strip after the finish hot rolling step, wherein in the finish hot rolling step, the draft of the finish hot rolling is greater than or equal to 60%, the roll diameter of the finish hot rolling is greater than or equal to 300 mm, the temperature of the finish hot rolling is 600-1100°C, and the final pass temperature of the finish hot rolling is 600-950°C, and in the cooling step, if the final pass temperature of the finish hot rolling is greater than or equal to 750°C, then the steel strip is cooled at a cooling speed of at least 5°C/s until 750°C.
Inventors:
MORIMOTO YOSHIKI (JP)
HIRAKAWA NAOKI (JP)
MIZOGUCHI TAICHIRO (JP)
NISHIMURA YASUSHI (JP)
HIRAKAWA NAOKI (JP)
MIZOGUCHI TAICHIRO (JP)
NISHIMURA YASUSHI (JP)
Application Number:
PCT/JP2020/023152
Publication Date:
December 17, 2020
Filing Date:
June 12, 2020
Export Citation:
Assignee:
NIPPON STEEL STAINLESS STEEL CORP (JP)
International Classes:
B21B3/02; C21D8/02; C21D9/46; C22C38/00; C22C38/58; C22C38/60
Domestic Patent References:
| WO2017061487A1 | 2017-04-13 |
Foreign References:
| JP2016508184A | 2016-03-17 | |||
| JP2015137419A | 2015-07-30 | |||
| JP2009030159A | 2009-02-12 | |||
| JP2007118025A | 2007-05-17 | |||
| JP2001262282A | 2001-09-26 |
Attorney, Agent or Firm:
HARAKENZO WORLD PATENT & TRADEMARK (JP)
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