WO2009145563A3 - Ultra high strength steel sheet with an excellent heat treatment property for hot press forming, quenched member, and manufacturing method for same - Google Patents

Ultra high strength steel sheet with an excellent heat treatment property for hot press forming, quenched member, and manufacturing method for same Download PDF

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Publication number
WO2009145563A3
WO2009145563A3 PCT/KR2009/002811 KR2009002811W WO2009145563A3 WO 2009145563 A3 WO2009145563 A3 WO 2009145563A3 KR 2009002811 W KR2009002811 W KR 2009002811W WO 2009145563 A3 WO2009145563 A3 WO 2009145563A3
Authority
WO
WIPO (PCT)
Prior art keywords
steel sheet
hot press
press forming
manufacturing
same
Prior art date
Application number
PCT/KR2009/002811
Other languages
French (fr)
Korean (ko)
Other versions
WO2009145563A2 (en
Inventor
오진근
강대영
진광근
신동석
Original Assignee
주식회사 포스코
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 주식회사 포스코 filed Critical 주식회사 포스코
Publication of WO2009145563A2 publication Critical patent/WO2009145563A2/en
Publication of WO2009145563A3 publication Critical patent/WO2009145563A3/en

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
    • 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
    • C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
    • C21D8/0236—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 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
    • C21D8/0273—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

Abstract

The present invention relates to an ultra high strength steel sheet with an excellent heat treatment property, wherein the steel sheet contains, by weight %, C: 0.2 to 0.5%, Si: 0.01 to 1.5%, Mn: 0.5 to 2.0%, P: 0.1% or less (but not 0%), S: 0.03% or less (but not 0%), soluble Al: 0.1% or less (but not 0%), N: 0.01 to 0.1%, and Cr: 0.1 to 2.0%, and a remainder consisting of Fe and other impurities, and has a tensile strength measured before hot press forming of 800 MPa or less. The invention also relates to a manufacturing method for same. Further, the present invention relates to a quenched member formed by hot press forming and quick freezing the steel sheet to a tensile strength of 1800 MPa or higher, and relates to a manufacturing method for same. The present invention provides a steel sheet the tensile strength of which when measured before hot press forming is 800MPa or less and the tensile strength of which when measured after hot press forming and quick freezing is 1800 MPa or higher. Moreover, the steel sheet of the present invention has a yield strength increased to 100 MPa or higher after coating.
PCT/KR2009/002811 2008-05-29 2009-05-27 Ultra high strength steel sheet with an excellent heat treatment property for hot press forming, quenched member, and manufacturing method for same WO2009145563A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2008-0050365 2008-05-29
KR1020080050365A KR101027285B1 (en) 2008-05-29 2008-05-29 High strength steel sheet for hot forming with excellent heat treatment property, hot formed hardening member and manufacturing methods thereof

Publications (2)

Publication Number Publication Date
WO2009145563A2 WO2009145563A2 (en) 2009-12-03
WO2009145563A3 true WO2009145563A3 (en) 2010-03-04

Family

ID=41377785

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2009/002811 WO2009145563A2 (en) 2008-05-29 2009-05-27 Ultra high strength steel sheet with an excellent heat treatment property for hot press forming, quenched member, and manufacturing method for same

Country Status (2)

Country Link
KR (1) KR101027285B1 (en)
WO (1) WO2009145563A2 (en)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101289154B1 (en) * 2009-12-29 2013-07-23 주식회사 포스코 Hot rolled steel sheet having excellent corrosion resistance and impcat toughness and manufacturing method thereof
KR101253885B1 (en) * 2010-12-27 2013-04-16 주식회사 포스코 Steel sheet fir formed member, formed member having excellent ductility and method for manufacturing the same
EP2719787B1 (en) 2011-06-10 2016-04-13 Kabushiki Kaisha Kobe Seiko Sho Hot press molded article, method for producing same, and thin steel sheet for hot press molding
UA109963C2 (en) 2011-09-06 2015-10-26 CATHANE STEEL, APPROVING CONSEQUENCES OF SEPARATION OF PARTS AFTER HOT FORMING AND / OR CUTTING IN TOOL, THAT HAS A HIGHER MACHINE
RU2660482C2 (en) * 2011-11-28 2018-07-06 Арселормитталь Инвестигасьон И Десарролло С.Л. MARTENSITE STEEL WITH TENSILE STRENGTH 1,700 - 2,200 MPa
KR101377489B1 (en) 2011-12-29 2014-03-26 현대제철 주식회사 METHOD OF MANUFACTURING ULTRA-HIGH STRENGTH STEEL SHEET WITH 980MPa GRADE TENSILE STRENGTH AND EXCELLENT GALVANIZING PROPERTY
KR101568549B1 (en) * 2013-12-25 2015-11-11 주식회사 포스코 Steel sheet for hot press formed product having high bendability and ultra high strength, hot press formed product using the same and method for manufacturing the same
KR101657822B1 (en) * 2014-12-24 2016-09-20 주식회사 포스코 Hot dip galvanized and galvannealed steel sheet having excellent elongation property, and method for the same
KR101665819B1 (en) 2014-12-24 2016-10-13 주식회사 포스코 Steel material for heat treating, formed component having extra high strength and high fatigue resistance and method for manufacturing the formed component
KR101797316B1 (en) * 2015-12-21 2017-11-14 주식회사 포스코 Part for automobile having high strength and excellent durability and manufacturing method therefor
CN106399837B (en) * 2016-07-08 2018-03-13 东北大学 Hot press-formed steel, hot press-formed technique and hot press-formed component
KR101830527B1 (en) 2016-09-26 2018-02-21 주식회사 포스코 Cold rolled steel sheet for hot press forming and hot presse forming part having excellent corrosion property and spot weldability, and manufacturing method thereof
KR20190049294A (en) * 2017-11-01 2019-05-09 주식회사 포스코 Ultra high strength steel sheet having good cold workability and its manufacturing method
KR102031460B1 (en) * 2017-12-26 2019-10-11 주식회사 포스코 Hot rolled steel with excellent impact toughness, steel tube, steel member, and method for manufacturing thereof
KR102043524B1 (en) * 2017-12-26 2019-11-12 주식회사 포스코 Ultra high strength hot rolled steel, steel tube, steel member, and method for manufacturing thereof
CN114262847A (en) * 2021-12-20 2022-04-01 马鞍山钢铁股份有限公司 High-surface-quality hot-rolled automobile steel with tensile strength larger than 1300MPa and manufacturing method thereof
CN114540712A (en) * 2022-02-28 2022-05-27 北京理工大学重庆创新中心 Non-coating enhanced high-temperature oxidation resistant hot stamping forming steel added with Ce element
CN114561591A (en) * 2022-02-28 2022-05-31 北京理工大学重庆创新中心 Y-element-added coating-free enhanced high-temperature oxidation-resistant hot stamping forming steel

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002105594A (en) * 2000-10-05 2002-04-10 Nippon Steel Corp High burring property hot rolled steel sheet having excellent low cycle fatigue strength and its production method
JP2006104532A (en) * 2004-10-06 2006-04-20 Nippon Steel Corp High strength thin steel sheet having excellent elongation and hole expansibility and method for producing the same
KR100711445B1 (en) * 2005-12-19 2007-04-24 주식회사 포스코 A method for manu- facturing alloyed hot dip galvanized steel sheet for hot press forming having excellent plating adhesion and impact property, the method for manufacturing hot press parts made of it
KR100723157B1 (en) * 2005-12-23 2007-05-30 주식회사 포스코 Steel sheet having ultra-high strength and excellent corrosion resistance after hot press forming and the method for manufacturing thereof
KR20070057689A (en) * 2005-12-01 2007-06-07 주식회사 포스코 Quenched steel sheet having ultra high strength, parts made of it and the method for manufacturing thereof

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002105594A (en) * 2000-10-05 2002-04-10 Nippon Steel Corp High burring property hot rolled steel sheet having excellent low cycle fatigue strength and its production method
JP2006104532A (en) * 2004-10-06 2006-04-20 Nippon Steel Corp High strength thin steel sheet having excellent elongation and hole expansibility and method for producing the same
KR20070057689A (en) * 2005-12-01 2007-06-07 주식회사 포스코 Quenched steel sheet having ultra high strength, parts made of it and the method for manufacturing thereof
KR100711445B1 (en) * 2005-12-19 2007-04-24 주식회사 포스코 A method for manu- facturing alloyed hot dip galvanized steel sheet for hot press forming having excellent plating adhesion and impact property, the method for manufacturing hot press parts made of it
KR100723157B1 (en) * 2005-12-23 2007-05-30 주식회사 포스코 Steel sheet having ultra-high strength and excellent corrosion resistance after hot press forming and the method for manufacturing thereof

Also Published As

Publication number Publication date
KR101027285B1 (en) 2011-04-06
WO2009145563A2 (en) 2009-12-03
KR20090124263A (en) 2009-12-03

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