EP4265781A4 - COLD-ROLLED STEEL SHEET OF VERY HIGH TOUGHNESS, HAVING EXCELLENT PROPERTIES IN TERMS OF ELASTICITY AND BENDING LIMIT, AND METHOD FOR MANUFACTURING SAME - Google Patents
COLD-ROLLED STEEL SHEET OF VERY HIGH TOUGHNESS, HAVING EXCELLENT PROPERTIES IN TERMS OF ELASTICITY AND BENDING LIMIT, AND METHOD FOR MANUFACTURING SAME Download PDFInfo
- Publication number
- EP4265781A4 EP4265781A4 EP21906924.2A EP21906924A EP4265781A4 EP 4265781 A4 EP4265781 A4 EP 4265781A4 EP 21906924 A EP21906924 A EP 21906924A EP 4265781 A4 EP4265781 A4 EP 4265781A4
- Authority
- EP
- European Patent Office
- Prior art keywords
- elasticity
- cold
- terms
- steel sheet
- rolled steel
- 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.)
- Pending
Links
Classifications
-
- 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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/38—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of manganese
-
- 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
- C21D1/18—Hardening; Quenching with or without subsequent tempering
- C21D1/19—Hardening; Quenching with or without subsequent tempering by interrupted quenching
-
- 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
- C21D1/84—Controlled slow cooling
-
- 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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/002—Heat treatment of ferrous alloys containing Cr
-
- 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 of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
-
- 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 of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0221—Modifying the physical properties of ferrous metals or ferrous alloys 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 of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0221—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
- C21D8/0236—Cold 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 of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0247—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
- C21D8/0273—Final recrystallisation annealing
-
- 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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/22—Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten
-
- 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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/26—Ferrous alloys, e.g. steel alloys containing chromium with niobium or tantalum
-
- 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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/28—Ferrous alloys, e.g. steel alloys containing chromium with titanium or zirconium
-
- 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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/32—Ferrous alloys, e.g. steel alloys containing chromium with boron
-
- 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
- C21D2211/001—Austenite
-
- 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
- C21D2211/008—Martensite
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Heat Treatment Of Sheet Steel (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020200176410A KR102461164B1 (en) | 2020-12-16 | 2020-12-16 | Ultra high strength cold rolled steel sheet having excellent yield strength and banding property and method of manufacturing the same |
| PCT/KR2021/017889 WO2022131619A1 (en) | 2020-12-16 | 2021-11-30 | Ultra-high-strength cold-rolled steel sheet having excellent yield strength and bending properties and method for manufacturing same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP4265781A1 EP4265781A1 (en) | 2023-10-25 |
| EP4265781A4 true EP4265781A4 (en) | 2024-05-01 |
Family
ID=82059682
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP21906924.2A Pending EP4265781A4 (en) | 2020-12-16 | 2021-11-30 | COLD-ROLLED STEEL SHEET OF VERY HIGH TOUGHNESS, HAVING EXCELLENT PROPERTIES IN TERMS OF ELASTICITY AND BENDING LIMIT, AND METHOD FOR MANUFACTURING SAME |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20240052468A1 (en) |
| EP (1) | EP4265781A4 (en) |
| JP (1) | JP7730903B2 (en) |
| KR (1) | KR102461164B1 (en) |
| CN (2) | CN121737566A (en) |
| WO (1) | WO2022131619A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102440757B1 (en) * | 2020-12-03 | 2022-09-08 | 주식회사 포스코 | Ultra-high-strength cold-rolled steel sheet with excellent bending workability and manufacturing method therefor |
| KR20240088291A (en) * | 2022-12-13 | 2024-06-20 | 주식회사 포스코 | Cold rolled steel sheet having excellent strength and formability and method of manufacturing the same |
| KR20240098202A (en) * | 2022-12-20 | 2024-06-28 | 주식회사 포스코 | Cold rolled steel shhet and method of manufacturing the same |
| KR20240098899A (en) * | 2022-12-21 | 2024-06-28 | 주식회사 포스코 | Hot-dip galvanized steel sheet and method for the same |
| CN122422562A (en) * | 2023-12-15 | 2026-07-17 | 浦项股份有限公司 | Cold-rolled steel sheet and method for producing same |
| KR20260097032A (en) * | 2024-12-17 | 2026-06-25 | 주식회사 포스코 | Cold-rolled steel sheet and method for manufacturing thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007100114A (en) * | 2005-09-30 | 2007-04-19 | Jfe Steel Kk | Manufacturing method of high-tensile cold-rolled steel sheet |
| KR20130046941A (en) * | 2011-10-28 | 2013-05-08 | 현대제철 주식회사 | High strength steel sheet and method of manufacturing the steel sheet |
| KR20140047960A (en) * | 2012-10-15 | 2014-04-23 | 주식회사 포스코 | Ultra high strength cold rolled steel sheet having excellent weldability and bendability and method for manufacturinf the same |
| JP2014196557A (en) * | 2013-03-06 | 2014-10-16 | 株式会社神戸製鋼所 | High-strength cold-rolled steel sheet excellent in steel sheet shape and shape fixability and production method thereof |
| KR20150014736A (en) * | 2013-07-30 | 2015-02-09 | 현대제철 주식회사 | High strength hot-rolled steel sheet and method of manufacturing the same |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2528387B2 (en) | 1990-12-29 | 1996-08-28 | 日本鋼管株式会社 | Manufacturing method of ultra high strength cold rolled steel sheet with good formability and strip shape |
| CZ284195B6 (en) * | 1991-10-22 | 1998-09-16 | Pohang Iron And Steel Co., Ltd. | Non-oriented electrical steel sheets and methods of their production |
| JP4308689B2 (en) | 2004-03-16 | 2009-08-05 | Ｊｆｅスチール株式会社 | High-strength steel with good workability and method for producing the same |
| JP5194878B2 (en) * | 2007-04-13 | 2013-05-08 | Ｊｆｅスチール株式会社 | High-strength hot-dip galvanized steel sheet excellent in workability and weldability and method for producing the same |
| KR101382854B1 (en) * | 2012-03-20 | 2014-04-08 | 주식회사 포스코 | Ultra high strength cold rolled steel sheets having high yield ratio, excellent weldability and bendability and method for manufacturing the same |
| JP5862651B2 (en) * | 2013-12-18 | 2016-02-16 | Ｊｆｅスチール株式会社 | High-strength hot-dip galvanized steel sheet excellent in impact resistance and bending workability and manufacturing method thereof |
| KR101674751B1 (en) | 2013-12-20 | 2016-11-10 | 주식회사 포스코 | Precipitation hardening steel sheet having excellent hole expandability and method for manufacturing the same |
| KR101767780B1 (en) * | 2015-12-23 | 2017-08-24 | 주식회사 포스코 | High strength cold rolled steel sheet having high yield ratio and method for manufacturing the same |
| KR102020407B1 (en) * | 2017-12-21 | 2019-09-10 | 주식회사 포스코 | High-strength steel sheet having high yield ratio and method for manufacturing thereof |
| KR102075216B1 (en) * | 2017-12-24 | 2020-02-07 | 주식회사 포스코 | High strength steel sheet having high yield ratio and method for manufacturing the same |
| KR102468051B1 (en) * | 2020-10-23 | 2022-11-18 | 주식회사 포스코 | Ultra high strength steel sheet having excellent ductility and method for manufacturing thereof |
| KR102490312B1 (en) * | 2020-12-09 | 2023-01-19 | 주식회사 포스코 | High-strength hot-dip galvanized steel sheet with high ductility and excellent formability |
| KR20230073569A (en) * | 2021-11-19 | 2023-05-26 | 주식회사 포스코 | Cold rolled steel sheet having excellent strength and formability and method of manufacturing the same |
-
2020
- 2020-12-16 KR KR1020200176410A patent/KR102461164B1/en active Active
-
2021
- 2021-11-30 JP JP2023536467A patent/JP7730903B2/en active Active
- 2021-11-30 WO PCT/KR2021/017889 patent/WO2022131619A1/en not_active Ceased
- 2021-11-30 CN CN202511774399.3A patent/CN121737566A/en active Pending
- 2021-11-30 CN CN202180081861.5A patent/CN116547401B/en active Active
- 2021-11-30 EP EP21906924.2A patent/EP4265781A4/en active Pending
- 2021-11-30 US US18/266,765 patent/US20240052468A1/en not_active Abandoned
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007100114A (en) * | 2005-09-30 | 2007-04-19 | Jfe Steel Kk | Manufacturing method of high-tensile cold-rolled steel sheet |
| KR20130046941A (en) * | 2011-10-28 | 2013-05-08 | 현대제철 주식회사 | High strength steel sheet and method of manufacturing the steel sheet |
| KR20140047960A (en) * | 2012-10-15 | 2014-04-23 | 주식회사 포스코 | Ultra high strength cold rolled steel sheet having excellent weldability and bendability and method for manufacturinf the same |
| JP2014196557A (en) * | 2013-03-06 | 2014-10-16 | 株式会社神戸製鋼所 | High-strength cold-rolled steel sheet excellent in steel sheet shape and shape fixability and production method thereof |
| KR20150014736A (en) * | 2013-07-30 | 2015-02-09 | 현대제철 주식회사 | High strength hot-rolled steel sheet and method of manufacturing the same |
Non-Patent Citations (1)
| Title |
|---|
| See also references of WO2022131619A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN116547401B (en) | 2026-04-17 |
| US20240052468A1 (en) | 2024-02-15 |
| WO2022131619A1 (en) | 2022-06-23 |
| KR102461164B1 (en) | 2022-11-02 |
| CN116547401A (en) | 2023-08-04 |
| JP7730903B2 (en) | 2025-08-28 |
| EP4265781A1 (en) | 2023-10-25 |
| KR20220086193A (en) | 2022-06-23 |
| CN121737566A (en) | 2026-03-27 |
| JP2024500722A (en) | 2024-01-10 |
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Ipc: C21D 6/00 20060101ALI20240326BHEP Ipc: C21D 1/84 20060101ALI20240326BHEP Ipc: C21D 1/19 20060101ALI20240326BHEP Ipc: C21D 8/02 20060101ALI20240326BHEP Ipc: C21D 9/46 20060101ALI20240326BHEP Ipc: C22C 38/38 20060101ALI20240326BHEP Ipc: C22C 38/32 20060101ALI20240326BHEP Ipc: C22C 38/28 20060101ALI20240326BHEP Ipc: C22C 38/26 20060101ALI20240326BHEP Ipc: C22C 38/22 20060101ALI20240326BHEP Ipc: C22C 38/06 20060101ALI20240326BHEP Ipc: C22C 38/04 20060101ALI20240326BHEP Ipc: C22C 38/02 20060101ALI20240326BHEP Ipc: C22C 38/00 20060101AFI20240326BHEP |