CN113195767A - 扩孔性优异的高强度热轧钢板及其制造方法 - Google Patents
扩孔性优异的高强度热轧钢板及其制造方法 Download PDFInfo
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- CN113195767A CN113195767A CN201980083649.5A CN201980083649A CN113195767A CN 113195767 A CN113195767 A CN 113195767A CN 201980083649 A CN201980083649 A CN 201980083649A CN 113195767 A CN113195767 A CN 113195767A
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- Prior art keywords
- rolled steel
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- steel sheet
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 93
- 239000010959 steel Substances 0.000 title claims abstract description 93
- 238000004519 manufacturing process Methods 0.000 title claims description 19
- 239000011572 manganese Substances 0.000 claims abstract description 31
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims abstract description 20
- 229910052796 boron Inorganic materials 0.000 claims abstract description 20
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 17
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 17
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 16
- 239000011593 sulfur Substances 0.000 claims abstract description 16
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims abstract description 15
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 15
- 229910000734 martensite Inorganic materials 0.000 claims abstract description 15
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 15
- 239000010703 silicon Substances 0.000 claims abstract description 15
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 14
- 239000011574 phosphorus Substances 0.000 claims abstract description 14
- 239000012535 impurity Substances 0.000 claims abstract description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000001816 cooling Methods 0.000 claims description 31
- 239000010936 titanium Substances 0.000 claims description 29
- 239000011651 chromium Substances 0.000 claims description 25
- 238000005098 hot rolling Methods 0.000 claims description 17
- 229910052719 titanium Inorganic materials 0.000 claims description 15
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 14
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 12
- 229910052804 chromium Inorganic materials 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 12
- 229910000859 α-Fe Inorganic materials 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 8
- 229910001566 austenite Inorganic materials 0.000 claims description 7
- 229910001563 bainite Inorganic materials 0.000 claims description 7
- 238000005096 rolling process Methods 0.000 claims description 7
- 238000003303 reheating Methods 0.000 claims description 6
- 230000000717 retained effect Effects 0.000 claims description 6
- 239000000203 mixture Substances 0.000 description 13
- 230000000694 effects Effects 0.000 description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 239000000047 product Substances 0.000 description 6
- 230000006872 improvement Effects 0.000 description 5
- 230000000704 physical effect Effects 0.000 description 5
- 238000009628 steelmaking Methods 0.000 description 5
- 229910001562 pearlite Inorganic materials 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 238000005275 alloying Methods 0.000 description 2
- 150000004767 nitrides Chemical class 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910001567 cementite Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 238000010191 image analysis Methods 0.000 description 1
- KSOKAHYVTMZFBJ-UHFFFAOYSA-N iron;methane Chemical compound C.[Fe].[Fe].[Fe] KSOKAHYVTMZFBJ-UHFFFAOYSA-N 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 150000001247 metal acetylides Chemical class 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Classifications
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- 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
- 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
- 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
- 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
-
- 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
-
- 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
- C21D6/005—Heat treatment of ferrous alloys containing Mn
-
- 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
-
- 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
- C21D8/0205—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips of ferrous alloys
-
- 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
- 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
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
-
- 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
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
-
- 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
- C22C38/14—Ferrous alloys, e.g. steel alloys containing 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
-
- 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
- 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
- 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
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- 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)
Abstract
Description
钢种 | C | Mn | Si | P | S | Cr | Ti | B |
A | 0.216 | 1.01 | 0.04 | 0.007 | 0.003 | 0.02 | 0.0180 | 0.0020 |
B | 0.135 | 1.22 | 0.06 | 0.012 | 0.003 | 0.04 | 0.0200 | 0.0022 |
C | 0.151 | 0.99 | 0.03 | 0.016 | 0.001 | 0.05 | 0.0180 | 0.0021 |
D | 0.244 | 1.06 | 0.07 | 0.013 | 0.002 | 0.04 | 0.0190 | 0.0020 |
E | 0.221 | 2.01 | 0.03 | 0.015 | 0.001 | 0.03 | 0.0200 | 0.0019 |
F | 0.211 | 1.09 | 0.05 | 0.007 | 0.010 | 0.05 | 0.1100 | 0.0021 |
G | 0.218 | 0.96 | 0.04 | 0.006 | 0.009 | 0.02 | 0.0200 | 0.0020 |
H | 0.090 | 0.98 | 0.04 | 0.007 | 0.007 | 0.02 | 0.0210 | 0.0018 |
I | 0.221 | 1.01 | 0.07 | 0.012 | 0.001 | 0.03 | 0.0200 | 0.0003 |
J | 0.164 | 3.14 | 0.08 | 0.011 | 0.004 | 0.04 | 0.0210 | 0.0019 |
K | 0.226 | 0.96 | 0.65 | 0.009 | 0.004 | 0.04 | 0.0190 | 0.0018 |
L | 0.219 | 0.99 | 0.07 | 0.022 | 0.005 | 0.02 | 0.0220 | 0.0018 |
M | 0.216 | 1.02 | 0.06 | 0.013 | 0.014 | 0.05 | 0.0220 | 0.0022 |
Claims (8)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020180165148A KR102209552B1 (ko) | 2018-12-19 | 2018-12-19 | 구멍확장성이 우수한 고강도 열연강판 및 그 제조방법 |
KR10-2018-0165148 | 2018-12-19 | ||
PCT/KR2019/017979 WO2020130614A2 (ko) | 2018-12-19 | 2019-12-18 | 구멍확장성이 우수한 고강도 열연강판 및 그 제조방법 |
Publications (1)
Publication Number | Publication Date |
---|---|
CN113195767A true CN113195767A (zh) | 2021-07-30 |
Family
ID=71101488
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201980083649.5A Pending CN113195767A (zh) | 2018-12-19 | 2019-12-18 | 扩孔性优异的高强度热轧钢板及其制造方法 |
Country Status (6)
Country | Link |
---|---|
US (1) | US20220074007A1 (zh) |
EP (1) | EP3901307A4 (zh) |
JP (1) | JP7216356B2 (zh) |
KR (1) | KR102209552B1 (zh) |
CN (1) | CN113195767A (zh) |
WO (1) | WO2020130614A2 (zh) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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KR102404770B1 (ko) | 2019-12-20 | 2022-06-07 | 주식회사 포스코 | 항복비가 우수한 고강도 열연강판 및 그 제조방법 |
Citations (8)
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JPH07197186A (ja) * | 1993-12-30 | 1995-08-01 | Kobe Steel Ltd | 耐遅れ破壊特性の優れた980N/mm2以上の強度を有する熱延鋼板及びその製造方法 |
CN101151391A (zh) * | 2005-03-31 | 2008-03-26 | 杰富意钢铁株式会社 | 热轧钢板及其制造方法和热轧钢板成形体 |
JP2010156016A (ja) * | 2008-12-26 | 2010-07-15 | Nippon Steel Corp | 曲げ加工性及び靭性の異方性に優れた高強度熱延鋼板及びその製造方法 |
JP2014201781A (ja) * | 2013-04-02 | 2014-10-27 | 新日鐵住金株式会社 | 靭性と圧延方向の剛性に優れた高強度熱延鋼板およびその製造方法 |
CN105849295A (zh) * | 2013-12-26 | 2016-08-10 | Posco公司 | 焊接性和去毛刺性优异的热轧钢板及其制备方法 |
JP2017057472A (ja) * | 2015-09-17 | 2017-03-23 | 新日鐵住金株式会社 | 熱延鋼板及びその製造方法 |
CN108350546A (zh) * | 2015-11-02 | 2018-07-31 | Posco公司 | 成型性和扩孔性优异的超高强度钢板及其制造方法 |
CN108884538A (zh) * | 2016-03-31 | 2018-11-23 | 杰富意钢铁株式会社 | 薄钢板和镀覆钢板、以及热轧钢板的制造方法、冷轧全硬钢板的制造方法、热处理板的制造方法、薄钢板的制造方法和镀覆钢板的制造方法 |
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PL185228B1 (pl) * | 1996-07-12 | 2003-04-30 | Thyssen Stahl Ag | Stalowa blacha walcowana na gorąco i sposób jej wytwarzania |
JP3915460B2 (ja) * | 2001-09-26 | 2007-05-16 | Jfeスチール株式会社 | 高強度熱延鋼板およびその製造方法 |
EP1396549B1 (de) | 2002-08-28 | 2006-10-25 | ThyssenKrupp Steel AG | Verfahren zum Herstellen eines perlitfreien warmgewalzten Stahlbands und nach diesem Verfahren hergestelltes Warmband |
JP4313591B2 (ja) | 2003-03-24 | 2009-08-12 | 新日本製鐵株式会社 | 穴拡げ性と延性に優れた高強度熱延鋼板及びその製造方法 |
JP4502646B2 (ja) | 2004-01-21 | 2010-07-14 | 株式会社神戸製鋼所 | 加工性、疲労特性および表面性状に優れた高強度熱延鋼板 |
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WO2013065346A1 (ja) * | 2011-11-01 | 2013-05-10 | Jfeスチール株式会社 | 曲げ特性と低温靭性に優れた高強度熱延鋼板およびその製造方法 |
KR101412272B1 (ko) * | 2012-03-29 | 2014-06-25 | 현대제철 주식회사 | 고강도 강판 제조 방법 |
KR101546134B1 (ko) * | 2013-07-30 | 2015-08-21 | 현대제철 주식회사 | 고강도 열연강판 및 그 제조 방법 |
KR20150075307A (ko) * | 2013-12-25 | 2015-07-03 | 주식회사 포스코 | 고상 접합성이 우수한 초고강도 열연강판 및 그 제조 방법 |
EP3296416A1 (en) * | 2015-05-12 | 2018-03-21 | Posco | Ultra-high strength hot-rolled steel sheet having excellent bending workability and method for manufacturing same |
KR101797387B1 (ko) * | 2016-08-31 | 2017-11-14 | 주식회사 포스코 | 성형성이 우수한 초고강도 박물 열연강판 및 그 제조방법 |
CN110100030B (zh) * | 2016-12-23 | 2021-04-20 | Posco公司 | 弯曲加工性优异的超高强度热轧钢板及其制造方法 |
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2018
- 2018-12-19 KR KR1020180165148A patent/KR102209552B1/ko active IP Right Grant
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2019
- 2019-12-18 WO PCT/KR2019/017979 patent/WO2020130614A2/ko unknown
- 2019-12-18 JP JP2021534941A patent/JP7216356B2/ja active Active
- 2019-12-18 CN CN201980083649.5A patent/CN113195767A/zh active Pending
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WO2020130614A3 (ko) | 2020-08-27 |
KR102209552B1 (ko) | 2021-01-28 |
KR20200076239A (ko) | 2020-06-29 |
EP3901307A2 (en) | 2021-10-27 |
EP3901307A4 (en) | 2022-04-27 |
JP2022513993A (ja) | 2022-02-09 |
US20220074007A1 (en) | 2022-03-10 |
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WO2020130614A2 (ko) | 2020-06-25 |
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