EP0620288A4 - Cold-rolled sheet and hot-galvanized, cold-rolled sheet, both excellent in bake hardening, cold nonaging and forming properties, and process for producing the same. - Google Patents

Cold-rolled sheet and hot-galvanized, cold-rolled sheet, both excellent in bake hardening, cold nonaging and forming properties, and process for producing the same.

Info

Publication number
EP0620288A4
EP0620288A4 EP93919599A EP93919599A EP0620288A4 EP 0620288 A4 EP0620288 A4 EP 0620288A4 EP 93919599 A EP93919599 A EP 93919599A EP 93919599 A EP93919599 A EP 93919599A EP 0620288 A4 EP0620288 A4 EP 0620288A4
Authority
EP
European Patent Office
Prior art keywords
cold
rolled sheet
nonaging
galvanized
bake hardening
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
EP93919599A
Other languages
German (de)
French (fr)
Other versions
EP0620288B1 (en
EP0620288A1 (en
Inventor
Naoki Yoshinaga
Kohsaku Ushioda
Osamu Akisue
Yoshikazu Matsumura
Kunio Nishimura
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.)
Nippon Steel Corp
Original Assignee
Nippon Steel Corp
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
Priority claimed from JP5044108A external-priority patent/JP2980785B2/en
Application filed by Nippon Steel Corp filed Critical Nippon Steel Corp
Publication of EP0620288A1 publication Critical patent/EP0620288A1/en
Publication of EP0620288A4 publication Critical patent/EP0620288A4/en
Application granted granted Critical
Publication of EP0620288B1 publication Critical patent/EP0620288B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • 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
    • C21D8/0426—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
    • C21D8/04—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
    • C21D8/0436—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
    • C21D8/0447—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 heat treatment
    • C21D8/0473—Final recrystallisation annealing

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Sheet Steel (AREA)

Abstract

A cold-rolled sheet or a hot-galvanized, cold-rolled sheet having high paint bake hardening and cold nonaging properties and being excellent in the forming properties such as an average r value (deep drawing characteristics) and elongation (bulging characteristics) is produced by annealing an ultralow-carbon steel itself or one containing at least either titanium or niobium above the Ac3 transformation point to thereby give thereto a single-phase structure of low-temperature transformation product. As regards the paint bake hardening properties, it is possible to realize a BH value as high as about 10 kgf/mm2.
EP93919599A 1992-08-31 1993-08-31 Cold-rolled sheet and hot-galvanized cold-rolled sheet, both excellent in bake hardening, cold nonaging and forming properties, and process for producing the same Expired - Lifetime EP0620288B1 (en)

Applications Claiming Priority (10)

Application Number Priority Date Filing Date Title
JP23231992 1992-08-31
JP232319/92 1992-08-31
JP23231992 1992-08-31
JP232301/92 1992-08-31
JP23230192 1992-08-31
JP23230192 1992-08-31
JP5044108A JP2980785B2 (en) 1992-08-31 1993-03-04 Cold-rolled steel sheet or hot-dip galvanized cold-rolled steel sheet excellent in bake hardenability and formability, and methods for producing them
JP44108/93 1993-03-04
JP4410893 1993-03-04
PCT/JP1993/001231 WO1994005823A1 (en) 1992-08-31 1993-08-31 Cold-rolled sheet and hot-galvanized, cold-rolled sheet, both excellent in bake hardening, cold nonaging and forming properties, and process for producing the same

Publications (3)

Publication Number Publication Date
EP0620288A1 EP0620288A1 (en) 1994-10-19
EP0620288A4 true EP0620288A4 (en) 1995-01-25
EP0620288B1 EP0620288B1 (en) 2000-11-22

Family

ID=27291785

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93919599A Expired - Lifetime EP0620288B1 (en) 1992-08-31 1993-08-31 Cold-rolled sheet and hot-galvanized cold-rolled sheet, both excellent in bake hardening, cold nonaging and forming properties, and process for producing the same

Country Status (4)

Country Link
EP (1) EP0620288B1 (en)
KR (1) KR0121737B1 (en)
DE (1) DE69329696T2 (en)
WO (1) WO1994005823A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111527228A (en) * 2017-12-26 2020-08-11 Posco公司 Cold-rolled steel sheet having excellent high-temperature characteristics and room-temperature workability, and method for producing same

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR970703439A (en) * 1995-03-27 1997-07-03 다나까 미노루 ULTRALOW-CARBON COLD-ROLLED SHEET AND GALVANIZED SHEET BOTH EXCELLENT IN FATIGUE CHARACTERISTICS AND PROCESS FOR PRODUCING BOTH
DE19622164C1 (en) * 1996-06-01 1997-05-07 Thyssen Stahl Ag Cold rolled steel sheet with good drawing properties
TW515847B (en) * 1997-04-09 2003-01-01 Kawasaki Steel Co Coating/baking curable type cold rolled steel sheet with excellent strain aging resistance and method for producing the same
US6143100A (en) * 1998-09-29 2000-11-07 National Steel Corporation Bake-hardenable cold rolled steel sheet and method of producing same
JP3958921B2 (en) * 2000-08-04 2007-08-15 新日本製鐵株式会社 Cold-rolled steel sheet excellent in paint bake-hardening performance and room temperature aging resistance and method for producing the same
KR100544538B1 (en) * 2001-12-21 2006-01-24 주식회사 포스코 High Strength Bake Hardening Steel Sheet With Good Workability and Non Aging Property at Room Temperature and A Method for Manufacturing Thereof
KR20030083276A (en) * 2002-04-20 2003-10-30 현대자동차주식회사 Bake-hardening high tension steel sheet and method for manufacturing the same
KR101105098B1 (en) * 2003-12-29 2012-01-16 주식회사 포스코 Bake-harding cold rolled steel sheet having excellent workability and high strength, process for producing the same
KR101104981B1 (en) * 2003-12-23 2012-01-16 주식회사 포스코 Bake hardening cold rolled steel sheet having excellent resistance to second work embrittleness and high strength, process for producing the same
KR101105025B1 (en) * 2003-12-29 2012-01-16 주식회사 포스코 Bake-hardening cold rolled steel sheet having less anistropy and high strength, process for producing the same
KR101105007B1 (en) * 2003-12-23 2012-01-16 주식회사 포스코 Cold rolled steel sheet having excellent baking hardenability and process for producing the same
KR101105132B1 (en) * 2003-12-23 2012-01-16 주식회사 포스코 Baking hardening cold rolled steel sheet having high strength, process for producing the same
EP2817428B2 (en) 2012-02-20 2019-06-19 Tata Steel Nederland Technology B.V. High strength bake-hardenable low density steel and method for producing said steel
WO2013153114A1 (en) 2012-04-11 2013-10-17 Tata Steel Nederland Technology B.V. High strength interstitial free low density steel and method for producing said steel
KR101505269B1 (en) * 2013-03-28 2015-03-23 현대제철 주식회사 Steel sheet and method of manufacturing the same
KR101505293B1 (en) * 2013-05-31 2015-03-23 현대제철 주식회사 Steel sheet
KR101758557B1 (en) * 2015-06-05 2017-07-18 주식회사 포스코 High-strength thin steel sheet having excellent drawability and bake hardenability and method for manufacturing the same
KR101795918B1 (en) * 2015-07-24 2017-11-10 주식회사 포스코 Hot dip galvanized and galvannealed steel sheet having higher bake hardening and aging properties, and method for the same

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04214820A (en) * 1990-12-14 1992-08-05 Nippon Steel Corp Manufacture of steel sheet for automobile excellent in baking hardenability of paint
WO1992016668A1 (en) * 1991-03-15 1992-10-01 Nippon Steel Corporation High-strength, cold-rolled steel sheet excellent in formability, hot-dip zinc coated high-strength cold rolled steel sheet, and method of manufacturing said sheets
JPH0578784A (en) * 1991-09-12 1993-03-30 Nippon Steel Corp High strength cold rolled steel sheet having satisfactory formability
JPH0578783A (en) * 1991-09-12 1993-03-30 Nippon Steel Corp High strength cold rolled steel sheet having satisfactory formability

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0757892B2 (en) * 1983-01-28 1995-06-21 新日本製鐵株式会社 Method for manufacturing cold-rolled steel sheet for deep drawing with excellent secondary workability and surface treatment
JPS59143027A (en) * 1983-02-07 1984-08-16 Kawasaki Steel Corp Production of high-strength steel plate having good ductility and processability
JPS60103128A (en) * 1983-11-11 1985-06-07 Kawasaki Steel Corp Production of cold rolled steel sheet having composite structure
JPS60174852A (en) * 1984-02-18 1985-09-09 Kawasaki Steel Corp Cold rolled steel sheet having composite structure and superior deep drawability
JPS61281852A (en) * 1985-06-07 1986-12-12 Kawasaki Steel Corp Cold-rolled steel sheet for deep drawing having superior baking hardening and delayed aging characteristic
JPH06102816B2 (en) * 1990-03-28 1994-12-14 川崎製鉄株式会社 Cold rolled steel sheet with a composite structure having excellent workability, non-aging at room temperature, and bake hardenability, and a method for producing the same

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04214820A (en) * 1990-12-14 1992-08-05 Nippon Steel Corp Manufacture of steel sheet for automobile excellent in baking hardenability of paint
WO1992016668A1 (en) * 1991-03-15 1992-10-01 Nippon Steel Corporation High-strength, cold-rolled steel sheet excellent in formability, hot-dip zinc coated high-strength cold rolled steel sheet, and method of manufacturing said sheets
JPH0578784A (en) * 1991-09-12 1993-03-30 Nippon Steel Corp High strength cold rolled steel sheet having satisfactory formability
JPH0578783A (en) * 1991-09-12 1993-03-30 Nippon Steel Corp High strength cold rolled steel sheet having satisfactory formability

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO9405823A1 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111527228A (en) * 2017-12-26 2020-08-11 Posco公司 Cold-rolled steel sheet having excellent high-temperature characteristics and room-temperature workability, and method for producing same
CN111527228B (en) * 2017-12-26 2021-12-21 Posco公司 Cold-rolled steel sheet having excellent high-temperature characteristics and room-temperature workability, and method for producing same

Also Published As

Publication number Publication date
KR0121737B1 (en) 1997-12-04
DE69329696D1 (en) 2000-12-28
WO1994005823A1 (en) 1994-03-17
EP0620288B1 (en) 2000-11-22
EP0620288A1 (en) 1994-10-19
DE69329696T2 (en) 2001-06-13

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