Title:
HIGH-TOUGHNESS QUASI-SUB-TEMPERATURE QUENCHED 09MNNIDR CONTAINER STEEL AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2022/222294
Kind Code:
A1
Abstract:
Disclosed in the present invention are a high-toughness quasi-sub-temperature quenched 09MnNiDR container steel and a preparation method therefor, which relate to the technical field of steel production. The high-toughness quasi-sub-temperature quenched 09MnNiDR container steel comprises the following chemical components in percentage by mass: ≤0.10% of C, 0.15%-0.50% of Si, 1.20%-1.60% of Mn, ≤0.015% of P, ≤0.010% of S, 0.30%-0.80% of Ni, ≥0.02% of Alt, ≤0.040% of Nb, ≤0.040% of V, ≤0.020% of Ti, and 0.0010%-0.0040% of Ca, the balance being Fe and residual elements. Provided that the strength of the steel plate is not reduced, the core impact performance of a 09MnNiDR steel plate with a thickness of 40-80 mm is improved.
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Inventors:
ZHANG BINGJUN (CN)
FANG LEI (CN)
XIE ZHANGLONG (CN)
XI LIANYUN (CN)
WU JUNPING (CN)
WU HUIBIN (CN)
LI ZHICHAO (CN)
NING BO (CN)
FANG LEI (CN)
XIE ZHANGLONG (CN)
XI LIANYUN (CN)
WU JUNPING (CN)
WU HUIBIN (CN)
LI ZHICHAO (CN)
NING BO (CN)
Application Number:
PCT/CN2021/108094
Publication Date:
October 27, 2022
Filing Date:
July 23, 2021
Export Citation:
Assignee:
NANJING IRON & STEEL CO LTD (CN)
International Classes:
C22C38/02; C21D1/18; C21D8/02; C22C38/04; C22C38/06
Foreign References:
| CN105886909A | 2016-08-24 | |||
| US5352304A | 1994-10-04 | |||
| KR20120070657A | 2012-07-02 | |||
| CN109440008A | 2019-03-08 | |||
| CN103820610A | 2014-05-28 | |||
| CN101876001A | 2010-11-03 | |||
| CN102345066A | 2012-02-08 | |||
| CN111996437A | 2020-11-27 | |||
| CN104911319A | 2015-09-16 |
Other References:
FENG LU-LU, HU FENG;QIAO WEN-WEI;LU XIU-YU: "Microstructure and Properties of 09mnnidr Steel for -70℃ Ultra Low Temperature Environment", GANGTIE - IRON AND STEEL, YENIN GONGYE CHUBANSHE, BEIJING, CN, vol. 55, no. 10, 1 October 2020 (2020-10-01), CN , pages 89 - 95, XP055980043, ISSN: 0449-749X
JIANG ZAIWEI, JUNPING WU, YIJIE ZHANG, BO NING, ZHICHAO LI: " Heat treatment optimization of 07MnNiMoDR steel for low temperature vessel", HEAT TREATMENT OF METALS, JINSHU RECHULI BIANJIBU, JP, vol. 45, no. 11, 1 November 2020 (2020-11-01), JP , pages 182 - 186, XP055980045, ISSN: 0254-6051
JIANG ZAIWEI, JUNPING WU, YIJIE ZHANG, BO NING, ZHICHAO LI: " Heat treatment optimization of 07MnNiMoDR steel for low temperature vessel", HEAT TREATMENT OF METALS, JINSHU RECHULI BIANJIBU, JP, vol. 45, no. 11, 1 November 2020 (2020-11-01), JP , pages 182 - 186, XP055980045, ISSN: 0254-6051
Attorney, Agent or Firm:
NANJING LI&FENG INTELLECTUAL PROPERTY AGENCY (SPECIAL GENERAL PARTNERSHIP) (CN)
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