DE502006007789D1 - METHOD FOR TREATING STEEL STRIP - Google Patents

METHOD FOR TREATING STEEL STRIP

Info

Publication number
DE502006007789D1
DE502006007789D1 DE502006007789T DE502006007789T DE502006007789D1 DE 502006007789 D1 DE502006007789 D1 DE 502006007789D1 DE 502006007789 T DE502006007789 T DE 502006007789T DE 502006007789 T DE502006007789 T DE 502006007789T DE 502006007789 D1 DE502006007789 D1 DE 502006007789D1
Authority
DE
Germany
Prior art keywords
annealing
hardening
heat treatment
steel strip
time
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.)
Active
Application number
DE502006007789T
Other languages
German (de)
Inventor
Uwe Paar
Kurt Dr Prof Steinhoff
Klaudia Bergmann
Manuel Maikranz-Valentin
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.)
Universitaet Kassel
Volkswagen AG
Original Assignee
Universitaet Kassel
Volkswagen AG
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 Universitaet Kassel, Volkswagen AG filed Critical Universitaet Kassel
Publication of DE502006007789D1 publication Critical patent/DE502006007789D1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • 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
    • 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/62—Quenching devices
    • C21D1/673—Quenching devices for die 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
    • 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
    • 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
    • C21D8/0405—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 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
    • C21D8/04—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

Abstract

The present invention relates to a method for treating a steel strip, particularly a steel strip made of highly resistant heat-treated steel, by cold rolling. The inventive method comprises at least a first step of heat treatment consisting of recrystallization annealing and at least another subsequent step of heat treatment consisting of hardening. Said method is characterized in that the time-temperature curve during the first step of heat treatment is chosen in such a way that only a partial recrystallization takes place and that the elongated structure produced by the previous strain-hardening is partially conserved. The inventive method enables reducing significantly the annealing time and annealing temperature during recrystallization annealing while at the same time reducing the annealing time during shape hardening. The processing chain can be reduced by more rapid annealing cycles, the reduction of the annealing temperature leading to significant energy savings. Said method allows producing e.g. semifinished sheet metal products for vehicle body components having an optimized strength/elongation ratio.
DE502006007789T 2005-09-22 2006-06-27 METHOD FOR TREATING STEEL STRIP Active DE502006007789D1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005045466.6A DE102005045466B4 (en) 2005-09-22 2005-09-22 Process for the treatment of steel strip
PCT/EP2006/006184 WO2007033711A1 (en) 2005-09-22 2006-06-27 Method for treating a steel strip

Publications (1)

Publication Number Publication Date
DE502006007789D1 true DE502006007789D1 (en) 2010-10-14

Family

ID=37037079

Family Applications (2)

Application Number Title Priority Date Filing Date
DE102005045466.6A Active DE102005045466B4 (en) 2005-09-22 2005-09-22 Process for the treatment of steel strip
DE502006007789T Active DE502006007789D1 (en) 2005-09-22 2006-06-27 METHOD FOR TREATING STEEL STRIP

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE102005045466.6A Active DE102005045466B4 (en) 2005-09-22 2005-09-22 Process for the treatment of steel strip

Country Status (4)

Country Link
EP (1) EP1929055B1 (en)
AT (1) ATE479781T1 (en)
DE (2) DE102005045466B4 (en)
WO (1) WO2007033711A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006032617B4 (en) * 2006-07-12 2008-04-03 Universität Kassel Process for the production of a sheet-metal semi-finished product suitable for molding
DE102006049146B4 (en) * 2006-10-17 2012-12-27 Braun CarTec GmbH Method for producing an assembly consisting of at least two interconnected sheet-metal parts
DE102009016027A1 (en) * 2009-04-02 2010-10-07 Volkswagen Ag Method for producing a component, in particular a body part, and production line for carrying out the method
DE102021203239A1 (en) 2021-03-30 2022-10-06 Volkswagen Aktiengesellschaft Process for the production of a sheet metal blank suitable for press hardening with different sheet metal thicknesses and process for the production of a press-hardened shaped sheet metal part

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1168462B (en) * 1957-06-12 1964-04-23 Cornigliano Societa Per Azioni Process for recrystallization annealing of cold worked steel
DE3406792A1 (en) * 1984-02-24 1985-08-29 Linde Ag, 6200 Wiesbaden METHOD AND DEVICE FOR GLOWING METAL PARTS
JPS6293341A (en) * 1985-10-21 1987-04-28 Kawasaki Steel Corp Cold-rolled steel sheet for working and its production
BE1010913A3 (en) * 1997-02-11 1999-03-02 Cockerill Rech & Dev Annealing process substrate metal in parade.
US6572716B2 (en) * 1997-09-22 2003-06-03 National Research Institute For Metals Fine ferrite-based structure steel production method
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
DE10149220C1 (en) * 2001-10-05 2002-08-08 Benteler Automobiltechnik Gmbh Process for producing a hardened sheet metal profile
DE10149221C1 (en) * 2001-10-05 2002-08-08 Benteler Automobiltechnik Gmbh Process for producing a hardened sheet metal profile
JP4220871B2 (en) * 2003-03-19 2009-02-04 株式会社神戸製鋼所 High-tensile steel plate and manufacturing method thereof

Also Published As

Publication number Publication date
DE102005045466B4 (en) 2015-10-29
WO2007033711A1 (en) 2007-03-29
DE102005045466A1 (en) 2007-03-29
EP1929055B1 (en) 2010-09-01
EP1929055A1 (en) 2008-06-11
ATE479781T1 (en) 2010-09-15

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