EP1920078A4 - Steel sheet for deep drawing having excellent secondary work embrittlement resistance, fatigue properties and plating properties, and method for manufacturing the same - Google Patents

Steel sheet for deep drawing having excellent secondary work embrittlement resistance, fatigue properties and plating properties, and method for manufacturing the same

Info

Publication number
EP1920078A4
EP1920078A4 EP06769200A EP06769200A EP1920078A4 EP 1920078 A4 EP1920078 A4 EP 1920078A4 EP 06769200 A EP06769200 A EP 06769200A EP 06769200 A EP06769200 A EP 06769200A EP 1920078 A4 EP1920078 A4 EP 1920078A4
Authority
EP
European Patent Office
Prior art keywords
steel sheet
properties
manufacturing
less
same
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
Application number
EP06769200A
Other languages
German (de)
French (fr)
Other versions
EP1920078A1 (en
EP1920078B1 (en
Inventor
Hee-Jae Kang
Kwang-Keun Chin
Sang-Ho Han
Chang-Sik Choi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Posco Holdings Inc
Original Assignee
Posco Co Ltd
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 Posco Co Ltd filed Critical Posco Co Ltd
Publication of EP1920078A1 publication Critical patent/EP1920078A1/en
Publication of EP1920078A4 publication Critical patent/EP1920078A4/en
Application granted granted Critical
Publication of EP1920078B1 publication Critical patent/EP1920078B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • C22C38/14—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
    • 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
    • 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
    • C21D8/04—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing
    • C21D8/0421—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing characterised by the working steps
    • 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
    • C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium

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 Sheet Steel (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)

Abstract

A steel sheet for deep drawing used for automobiles, and a method for manufacturing the same are disclosed. The steel sheet comprises, by weight %, C: 0.010% or less, Si: 0.02% or less, Mn: 0.06~1.5%, P: 0.15% or less, S: 0.020% or less, Sol. Al: 0.10~0.40%, N: 0.010% or less, Ti: 0.003~0.010%, Nb: 0.003~0.040%, B: 0.0002~0.0020%, and the balance of Fe and other unavoidable impurities, wherein the composition of Ti, Al, B, and N satisfies the relationship: 1.0<(Ti[%]+Al[%]/16+6B[%])/3.43N[%]<4.1, and wherein the composition of Nb, Al, and C satisfies the relationship; 0.7<(Nb[%]+Al[%]/20)/7.75C[%]<3.5. The steel sheet exhibits excellent secondary work embrittlement, fatigue properties of welded joints, and an appealing plated surface as well as excellent formability.
EP06769200A 2005-07-08 2006-07-07 Steel sheet for deep drawing having excellent secondary work embrittlement resistance, fatigue properties and plating properties, and method for manufacturing the same Active EP1920078B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020050061691A KR100685030B1 (en) 2005-07-08 2005-07-08 Steel sheet for deep drawing having excellent resistance to secondary work embrittlement, fatigue property and coatability, and method for manufacturing the same
PCT/KR2006/002657 WO2007007983A1 (en) 2005-07-08 2006-07-07 Steel sheet for deep drawing having excellent secondary work embrittlement resistance, fatigue properties and plating properties, and method for manufacturing the same

Publications (3)

Publication Number Publication Date
EP1920078A1 EP1920078A1 (en) 2008-05-14
EP1920078A4 true EP1920078A4 (en) 2010-03-24
EP1920078B1 EP1920078B1 (en) 2012-03-21

Family

ID=37637321

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06769200A Active EP1920078B1 (en) 2005-07-08 2006-07-07 Steel sheet for deep drawing having excellent secondary work embrittlement resistance, fatigue properties and plating properties, and method for manufacturing the same

Country Status (7)

Country Link
US (1) US20080196799A1 (en)
EP (1) EP1920078B1 (en)
JP (1) JP4848423B2 (en)
KR (1) KR100685030B1 (en)
CN (1) CN101218363B (en)
AT (1) ATE550448T1 (en)
WO (1) WO2007007983A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20070038730A (en) 2005-10-06 2007-04-11 주식회사 포스코 The precipitation hardening cold rolled steel sheet having excellent yield ratios, and the method for manufacturing the same
JP5765080B2 (en) * 2010-06-25 2015-08-19 Ｊｆｅスチール株式会社 High-strength hot-rolled steel sheet excellent in stretch flangeability and manufacturing method thereof
CN102912226A (en) * 2012-10-17 2013-02-06 首钢总公司 Secondary work brittleness resistant DC06 automotive steel and production method thereof
CN106191368B (en) * 2015-04-30 2018-06-26 上海梅山钢铁股份有限公司 A kind of production method of high alumina ultralow titanium molten steel
KR102484978B1 (en) * 2020-12-11 2023-01-05 주식회사 포스코 High strength galvannealed steel sheet having excellent powdering resistance and manufacturing method for the same

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0539962A1 (en) * 1991-10-29 1993-05-05 Kawasaki Steel Corporation Method of manufacturing a cold rolled steel sheet exhibiting an excellent resistance to cold-work embrittlement and a small planar anisotropy
KR20030053802A (en) * 2001-12-24 2003-07-02 주식회사 포스코 Manufacturing method of multiphase cold rolled steel sheet with good formability
WO2004003247A1 (en) * 2002-06-28 2004-01-08 Posco Super formable high strength steel sheet and method of manufacturing thereof
KR20040058489A (en) * 2002-12-27 2004-07-05 주식회사 포스코 Preparing method of baked hardening cold rolled steel sheet for hot dipping having good anti-aging property
WO2006001583A1 (en) * 2004-03-25 2006-01-05 Posco Cold rolled steel sheet and hot dipped steel sheet with superior strength and bake hardenability and method for manufacturing the steel sheets

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2752657B2 (en) * 1988-10-13 1998-05-18 川崎製鉄株式会社 Soft hot-rolled steel sheet with excellent deep drawability
JP2582894B2 (en) * 1989-04-04 1997-02-19 株式会社神戸製鋼所 Hot-rolled steel sheet for deep drawing and its manufacturing method
JP3049104B2 (en) * 1991-03-13 2000-06-05 川崎製鉄株式会社 Manufacturing method of high tensile cold rolled steel sheet for deep drawing
JP3234644B2 (en) 1992-08-10 2001-12-04 川崎製鉄株式会社 High r value high tensile strength cold rolled steel sheet excellent in secondary work brittleness resistance and method for producing the same
US5690755A (en) * 1992-08-31 1997-11-25 Nippon Steel Corporation Cold-rolled steel sheet and hot-dip galvanized cold-rolled steel sheet having excellent bake hardenability, non-aging properties at room temperature and good formability and process for producing the same
US5531839A (en) * 1993-10-05 1996-07-02 Nkk Corporation Continously annealed cold-rolled steel sheet excellent in balance between deep drawability and resistance to secondary-work embrittlement and method for manufacturing same
JPH07179946A (en) 1993-12-24 1995-07-18 Kawasaki Steel Corp Production of high workability high tensile strength cold rolled steel plate excellent in secondary working brittleness resistance
JP3293015B2 (en) * 1995-02-23 2002-06-17 新日本製鐵株式会社 Cold rolled steel sheet with excellent workability uniformity
JP3420370B2 (en) * 1995-03-16 2003-06-23 Ｊｆｅスチール株式会社 Thin steel sheet excellent in press formability and method for producing the same
JP3295900B2 (en) 1996-07-02 2002-06-24 株式会社神戸製鋼所 High strength alloyed hot-dip galvanized steel sheet for deep drawing with excellent secondary work brittleness resistance
JPH1060544A (en) * 1996-08-13 1998-03-03 Kobe Steel Ltd Quench-strengthening method for thin steel sheet by irradiation of high density energy
JPH1150211A (en) * 1997-08-05 1999-02-23 Kawasaki Steel Corp Thick cold rolled steel plate excellent in deep drawing workability and its production
JP3840855B2 (en) 1999-02-15 2006-11-01 Ｊｆｅスチール株式会社 High-strength thin steel sheet with excellent secondary work brittleness resistance and formability and method for producing the same
JP3534023B2 (en) 1999-11-05 2004-06-07 Ｊｆｅスチール株式会社 High-strength steel sheet with excellent secondary work brittleness resistance and method for producing the same
KR20010059365A (en) * 1999-12-30 2001-07-06 이구택 a high strength cold rolled steel sheet with high formability and the method of manufacturing the same
US20030015263A1 (en) * 2000-05-26 2003-01-23 Chikara Kami Cold rolled steel sheet and galvanized steel sheet having strain aging hardening property and method for producing the same
KR100470643B1 (en) * 2000-12-05 2005-03-07 주식회사 포스코 A high strength cold rolled steel sheet with excellent drawability and secondary working brittleness resistance, and a method for manufacturing it
KR100530057B1 (en) * 2001-11-26 2005-11-22 주식회사 포스코 Method for Manufacturing Cold Rolled Steel Sheet with Superior Workability and Secondary Working Embrittlement Resistance

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0539962A1 (en) * 1991-10-29 1993-05-05 Kawasaki Steel Corporation Method of manufacturing a cold rolled steel sheet exhibiting an excellent resistance to cold-work embrittlement and a small planar anisotropy
KR20030053802A (en) * 2001-12-24 2003-07-02 주식회사 포스코 Manufacturing method of multiphase cold rolled steel sheet with good formability
WO2004003247A1 (en) * 2002-06-28 2004-01-08 Posco Super formable high strength steel sheet and method of manufacturing thereof
KR20040058489A (en) * 2002-12-27 2004-07-05 주식회사 포스코 Preparing method of baked hardening cold rolled steel sheet for hot dipping having good anti-aging property
WO2006001583A1 (en) * 2004-03-25 2006-01-05 Posco Cold rolled steel sheet and hot dipped steel sheet with superior strength and bake hardenability and method for manufacturing the steel sheets

Also Published As

Publication number Publication date
KR20070006393A (en) 2007-01-11
JP4848423B2 (en) 2011-12-28
US20080196799A1 (en) 2008-08-21
WO2007007983A9 (en) 2010-09-16
ATE550448T1 (en) 2012-04-15
EP1920078A1 (en) 2008-05-14
KR100685030B1 (en) 2007-02-20
JP2009500524A (en) 2009-01-08
EP1920078B1 (en) 2012-03-21
CN101218363A (en) 2008-07-09
WO2007007983A1 (en) 2007-01-18
CN101218363B (en) 2010-12-08

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