EP3889296A4 - High-strength steel sheet having excellent ductility and low-temperature toughness and method for manufacturing thereof - Google Patents
High-strength steel sheet having excellent ductility and low-temperature toughness and method for manufacturing thereof Download PDFInfo
- Publication number
- EP3889296A4 EP3889296A4 EP19891370.9A EP19891370A EP3889296A4 EP 3889296 A4 EP3889296 A4 EP 3889296A4 EP 19891370 A EP19891370 A EP 19891370A EP 3889296 A4 EP3889296 A4 EP 3889296A4
- Authority
- EP
- European Patent Office
- Prior art keywords
- manufacturing
- low
- steel sheet
- strength steel
- temperature toughness
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229910000831 Steel Inorganic materials 0.000 title 1
- 238000004519 manufacturing process Methods 0.000 title 1
- 238000000034 method Methods 0.000 title 1
- 239000010959 steel Substances 0.000 title 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/02—Hardening articles or materials formed by forging or rolling, with no further heating beyond that required for the formation
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
- C21D8/0226—Hot rolling
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
- C21D8/0263—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment following hot rolling
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/001—Ferrous alloys, e.g. steel alloys containing N
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/14—Ferrous alloys, e.g. steel alloys containing titanium or zirconium
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/002—Bainite
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/005—Ferrite
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/009—Pearlite
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Heat Treatment Of Steel (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020180150707A KR102164112B1 (en) | 2018-11-29 | 2018-11-29 | High-strength steel sheet having excellent ductility and low-temperature toughness and method for manufacturing thereof |
| PCT/KR2019/016692 WO2020111856A2 (en) | 2018-11-29 | 2019-11-29 | High-strength steel sheet having excellent ductility and low-temperature toughness and method for manufacturing thereof |
Publications (4)
| Publication Number | Publication Date |
|---|---|
| EP3889296A2 EP3889296A2 (en) | 2021-10-06 |
| EP3889296A4 true EP3889296A4 (en) | 2021-11-03 |
| EP3889296C0 EP3889296C0 (en) | 2023-10-18 |
| EP3889296B1 EP3889296B1 (en) | 2023-10-18 |
Family
ID=70852022
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19891370.9A Active EP3889296B1 (en) | 2018-11-29 | 2019-11-29 | High-strength steel sheet having excellent ductility and low-temperature toughness and method for manufacturing thereof |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20220042132A1 (en) |
| EP (1) | EP3889296B1 (en) |
| JP (1) | JP7221475B6 (en) |
| KR (1) | KR102164112B1 (en) |
| CN (1) | CN113166885B (en) |
| WO (1) | WO2020111856A2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102484998B1 (en) * | 2020-12-11 | 2023-01-05 | 주식회사 포스코 | High strength steel sheet having excellent ductility and method for manufacturing thereof |
| CN113061811A (en) * | 2021-03-17 | 2021-07-02 | 攀钢集团江油长城特殊钢有限公司 | LNG (liquefied Natural gas) marine structural steel and preparation method thereof |
| JPWO2023162190A1 (en) * | 2022-02-28 | 2023-08-31 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2752499A1 (en) * | 2011-08-23 | 2014-07-09 | Nippon Steel & Sumitomo Metal Corporation | Thick-walled electric-resistance-welded steel pipe and process for producing same |
| EP2868765A1 (en) * | 2012-06-28 | 2015-05-06 | JFE Steel Corporation | High-strength electric-resistance-welded steel pipe of excellent long-term softening resistance in intermediate temperature ranges, and method for producing same |
| EP2940172A1 (en) * | 2012-12-27 | 2015-11-04 | Posco | High strength steel sheet having excellent cryogenic temperature toughness and low yield ratio properties, and method for manufacturing same |
Family Cites Families (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5582A (en) * | 1978-12-26 | 1980-01-05 | Setsuo Kuroki | Cigarette pipe |
| JPS62130216A (en) * | 1985-12-02 | 1987-06-12 | Kobe Steel Ltd | Production of accelerated cooling type thick, high toughness, high tensile steel sheet |
| JP3849244B2 (en) * | 1997-09-16 | 2006-11-22 | Ｊｆｅスチール株式会社 | Steel material excellent in ductile crack growth resistance under repeated large deformation and its manufacturing method |
| JP3434445B2 (en) * | 1997-12-26 | 2003-08-11 | 新日本製鐵株式会社 | Steel plate for hull with excellent shock absorption capacity |
| JP3848091B2 (en) * | 2001-02-28 | 2006-11-22 | 株式会社神戸製鋼所 | Steel sheet with less toughness deterioration due to strain aging |
| US20070193665A1 (en) * | 2004-03-11 | 2007-08-23 | Hitoshi Furuya | Steel plate excellent in machineability and in toughness and weldability and method of production of the same |
| JP4626394B2 (en) * | 2005-05-18 | 2011-02-09 | Ｊｆｅスチール株式会社 | Manufacturing method of thick steel plate with excellent low temperature toughness |
| DE602005001558T2 (en) | 2005-06-06 | 2008-03-06 | The Swatch Group Management Services Ag | Inextensible limb bracelet |
| JP4728710B2 (en) | 2005-07-01 | 2011-07-20 | 新日本製鐵株式会社 | Hot-rolled steel sheet having excellent workability and manufacturing method thereof |
| JP4476923B2 (en) * | 2005-12-15 | 2010-06-09 | 株式会社神戸製鋼所 | Steel sheet with excellent impact absorption and base metal toughness |
| JP4985086B2 (en) * | 2006-12-28 | 2012-07-25 | Ｊｆｅスチール株式会社 | High tensile thick steel plate with excellent brittle crack propagation stopping characteristics and method for producing the same |
| CN101883875B (en) * | 2007-12-04 | 2012-10-10 | Posco公司 | High-strength steel sheet with excellent low temperature toughness and manufacturing method thereof |
| KR100957962B1 (en) * | 2007-12-26 | 2010-05-17 | 주식회사 포스코 | Steel for a structure having excellent low temperature toughnetss and tensile strength of heat affected zone and manufacturing method for the same |
| JP5953952B2 (en) | 2011-11-30 | 2016-07-20 | Ｊｆｅスチール株式会社 | Steel material excellent in impact resistance and method for producing the same |
| KR101344610B1 (en) * | 2012-02-28 | 2013-12-26 | 현대제철 주식회사 | Steel sheet and method of manufacturing the same |
| KR101536387B1 (en) * | 2012-12-27 | 2015-07-13 | 주식회사 포스코 | High-strength steel sheet having superior cryogenic temperature toughness and low yield ratio property and manufacturing method thereof |
| JP5994819B2 (en) | 2014-05-30 | 2016-09-21 | 新日鐵住金株式会社 | Steel plate with excellent impact resistance and method for producing the same |
| JP6676973B2 (en) * | 2016-01-13 | 2020-04-08 | 日本製鉄株式会社 | Hot rolled steel sheet and method for producing the same |
-
2018
- 2018-11-29 KR KR1020180150707A patent/KR102164112B1/en active IP Right Grant
-
2019
- 2019-11-29 CN CN201980077747.8A patent/CN113166885B/en active Active
- 2019-11-29 EP EP19891370.9A patent/EP3889296B1/en active Active
- 2019-11-29 US US17/297,740 patent/US20220042132A1/en active Pending
- 2019-11-29 WO PCT/KR2019/016692 patent/WO2020111856A2/en unknown
- 2019-11-29 JP JP2021530170A patent/JP7221475B6/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2752499A1 (en) * | 2011-08-23 | 2014-07-09 | Nippon Steel & Sumitomo Metal Corporation | Thick-walled electric-resistance-welded steel pipe and process for producing same |
| EP2868765A1 (en) * | 2012-06-28 | 2015-05-06 | JFE Steel Corporation | High-strength electric-resistance-welded steel pipe of excellent long-term softening resistance in intermediate temperature ranges, and method for producing same |
| EP2940172A1 (en) * | 2012-12-27 | 2015-11-04 | Posco | High strength steel sheet having excellent cryogenic temperature toughness and low yield ratio properties, and method for manufacturing same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2022510212A (en) | 2022-01-26 |
| EP3889296A2 (en) | 2021-10-06 |
| KR102164112B1 (en) | 2020-10-12 |
| EP3889296C0 (en) | 2023-10-18 |
| CN113166885A (en) | 2021-07-23 |
| EP3889296B1 (en) | 2023-10-18 |
| US20220042132A1 (en) | 2022-02-10 |
| WO2020111856A3 (en) | 2020-08-13 |
| JP7221475B6 (en) | 2023-02-28 |
| WO2020111856A2 (en) | 2020-06-04 |
| KR20200064511A (en) | 2020-06-08 |
| CN113166885B (en) | 2022-10-14 |
| JP7221475B2 (en) | 2023-02-14 |
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Effective date: 20211004 |
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| RIC1 | Information provided on ipc code assigned before grant |
Ipc: C21D 9/46 20060101ALI20210928BHEP Ipc: C21D 6/00 20060101ALI20210928BHEP Ipc: C21D 1/02 20060101ALI20210928BHEP Ipc: C21D 8/02 20060101ALI20210928BHEP Ipc: C22C 38/08 20060101ALI20210928BHEP Ipc: C22C 38/00 20060101ALI20210928BHEP Ipc: C22C 38/12 20060101ALI20210928BHEP Ipc: C22C 38/14 20060101ALI20210928BHEP Ipc: C22C 38/06 20060101ALI20210928BHEP Ipc: C22C 38/02 20060101ALI20210928BHEP Ipc: C22C 38/04 20060101AFI20210928BHEP |
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| DAV | Request for validation of the european patent (deleted) | ||
| DAX | Request for extension of the european patent (deleted) | ||
| RAP3 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: POSCO HOLDINGS INC. |
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| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: POSCO CO., LTD |
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| RIC1 | Information provided on ipc code assigned before grant |
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