ATE279540T1 - METHOD FOR PRODUCING HIGH-STRENGTH COLD-FORMED STEEL PRODUCTS FROM A HOT STRIP WITH GOOD EXTENSIBILITY - Google Patents

METHOD FOR PRODUCING HIGH-STRENGTH COLD-FORMED STEEL PRODUCTS FROM A HOT STRIP WITH GOOD EXTENSIBILITY

Info

Publication number
ATE279540T1
ATE279540T1 AT02738172T AT02738172T ATE279540T1 AT E279540 T1 ATE279540 T1 AT E279540T1 AT 02738172 T AT02738172 T AT 02738172T AT 02738172 T AT02738172 T AT 02738172T AT E279540 T1 ATE279540 T1 AT E279540T1
Authority
AT
Austria
Prior art keywords
cold
hot
product
strip
less
Prior art date
Application number
AT02738172T
Other languages
German (de)
Inventor
Thomas Heller
Bernhard Engl
Guenter Stich
Original Assignee
Thyssenkrupp Stahl 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=7689496&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=ATE279540(T1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Thyssenkrupp Stahl Ag filed Critical Thyssenkrupp Stahl Ag
Application granted granted Critical
Publication of ATE279540T1 publication Critical patent/ATE279540T1/en

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
    • C21D8/0221—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
    • 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
    • C21D8/0278—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips involving a particular surface treatment

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

The invention relates to a method for producing a high-strength cold-formed product from a hot-rolled strip, said product exhibiting good malleability. According to said method, a steel comprising (in wt.%): C: 0.01 0.25 %, Si: 0.01 1.50 %, Mn: 0.50 2.00 %, P: <= 0.08 %, S: <= 0.01 %, Al: 0.001 1.50 %, Cr: <= 0.60 %, Mo: <= 0.60 %, N: < 0.02 %, at least one micro-alloy element from the group Ti: <= 0.20 %, Nb: <= 0.06 %, V: <= 0.15 %, the remainder being iron and the usual impurities is cast to form an input stock such as slabs, thin slabs or a cast strip. Starting from an initial hot-roll temperature, at which the micro-alloy elements remain essentially dissolved, the input stock is hot-rolled to form a hot-rolled strip. Said strip is firstly wound at a winding temperature of less than 600 DEG C and then cold formed into a product at a cold formation degree which is not less than 2 % and not greater than the deformation limit. The cold-formed product is annealed at a temperature and for a period which are less those required for complete recrystallization. The inventive method enables a cold formed product to be produced, said product exhibiting high strength, malleability and plasticity in the cold formed state.
AT02738172T 2001-06-26 2002-06-21 METHOD FOR PRODUCING HIGH-STRENGTH COLD-FORMED STEEL PRODUCTS FROM A HOT STRIP WITH GOOD EXTENSIBILITY ATE279540T1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10130774A DE10130774C1 (en) 2001-06-26 2001-06-26 Production of a high strength cold-formed product comprises pre-casting a steel to a pre-material, hot rolling into a hot strip so that the micro-alloying elements remain dissolved, coiling, cold-forming to a product, and annealing
PCT/EP2002/006870 WO2003002772A1 (en) 2001-06-26 2002-06-21 Method for producing high-strength cold-formed steel products from a hot rolled strip, said products exhibiting good malleability

Publications (1)

Publication Number Publication Date
ATE279540T1 true ATE279540T1 (en) 2004-10-15

Family

ID=7689496

Family Applications (1)

Application Number Title Priority Date Filing Date
AT02738172T ATE279540T1 (en) 2001-06-26 2002-06-21 METHOD FOR PRODUCING HIGH-STRENGTH COLD-FORMED STEEL PRODUCTS FROM A HOT STRIP WITH GOOD EXTENSIBILITY

Country Status (5)

Country Link
EP (1) EP1399598B2 (en)
AT (1) ATE279540T1 (en)
DE (2) DE10130774C1 (en)
ES (1) ES2230500T3 (en)
WO (1) WO2003002772A1 (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2855184B1 (en) * 2003-05-19 2006-05-19 Usinor COLD LAMINATED, ALUMINATED, HIGH STRENGTH, DUAL PHASE STEEL FOR TELEVISION ANTI-IMPLOSION BELT, AND METHOD FOR MANUFACTURING THE SAME
US9999918B2 (en) 2005-10-20 2018-06-19 Nucor Corporation Thin cast strip product with microalloy additions, and method for making the same
US9149868B2 (en) 2005-10-20 2015-10-06 Nucor Corporation Thin cast strip product with microalloy additions, and method for making the same
US10071416B2 (en) 2005-10-20 2018-09-11 Nucor Corporation High strength thin cast strip product and method for making the same
WO2007064172A1 (en) * 2005-12-01 2007-06-07 Posco Steel sheet for hot press forming having excellent heat treatment and impact property, hot press parts made of it and the method for manufacturing thereof
US20110277886A1 (en) 2010-02-20 2011-11-17 Nucor Corporation Nitriding of niobium steel and product made thereby
US20180209011A1 (en) 2015-07-17 2018-07-26 Salzgitter Flachstahl Gmbh Method of producing a hot strip of a bainitic multi-phase steel having a zn-mg-al coating, and a corresponding hot strip
DE102016005532A1 (en) * 2016-05-02 2017-11-02 Vladimir Volchkov stole
CN109023105B (en) * 2018-09-25 2020-11-13 首钢集团有限公司 Hot-rolled strip steel for automobile structure and manufacturing method thereof
CN110684932B (en) * 2019-10-12 2021-06-08 唐山钢铁集团有限责任公司 1500 MPa-grade cold-formed strip steel and production method thereof
CN116497266A (en) * 2022-01-19 2023-07-28 宝山钢铁股份有限公司 Hot-rolled high-strength high-plasticity steel and manufacturing method thereof
EP4403662A1 (en) 2023-01-18 2024-07-24 voestalpine Stahl GmbH A cold rolled steel and a production process to it

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3950190A (en) † 1974-11-18 1976-04-13 Youngstown Sheet And Tube Company Recovery-annealed cold-reduced plain carbon steels and methods of producing
US3963531A (en) † 1975-02-28 1976-06-15 Armco Steel Corporation Cold rolled, ductile, high strength steel strip and sheet and method therefor
US4082576A (en) † 1976-10-04 1978-04-04 Youngstown Sheet And Tube Company Ultra-high strength low alloy titanium bearing flat rolled steel and process for making
DE19710125A1 (en) † 1997-03-13 1998-09-17 Krupp Ag Hoesch Krupp Process for the production of a steel strip with high strength and good formability
FR2796083B1 (en) † 1999-07-07 2001-08-31 Usinor PROCESS FOR MANUFACTURING IRON-CARBON-MANGANESE ALLOY STRIPS, AND STRIPS THUS PRODUCED

Also Published As

Publication number Publication date
DE50201321D1 (en) 2004-11-18
WO2003002772A1 (en) 2003-01-09
EP1399598B2 (en) 2011-02-23
EP1399598B1 (en) 2004-10-13
DE10130774C1 (en) 2002-12-12
EP1399598A1 (en) 2004-03-24
ES2230500T3 (en) 2005-05-01

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