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ATE432376T1 - METHOD FOR PRODUCING FLAT STEEL PRODUCTS FROM A MULTIPHASE STEEL MICRO-ALLOYED WITH BORON - Google Patents

METHOD FOR PRODUCING FLAT STEEL PRODUCTS FROM A MULTIPHASE STEEL MICRO-ALLOYED WITH BORON

Info

Publication number
ATE432376T1
ATE432376T1 AT06123139T AT06123139T ATE432376T1 AT E432376 T1 ATE432376 T1 AT E432376T1 AT 06123139 T AT06123139 T AT 06123139T AT 06123139 T AT06123139 T AT 06123139T AT E432376 T1 ATE432376 T1 AT E432376T1
Authority
AT
Austria
Prior art keywords
hot
rolled strip
rolled
strip
temperature
Prior art date
Application number
AT06123139T
Other languages
German (de)
Inventor
Brigitte Hammer
Thomas Heller
Johann Wilhelm Schmitz
Jochen Wans
Original Assignee
Thyssenkrupp Steel 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 Thyssenkrupp Steel Ag filed Critical Thyssenkrupp Steel Ag
Application granted granted Critical
Publication of ATE432376T1 publication Critical patent/ATE432376T1/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
    • C21D8/04—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
    • C21D8/041—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 involving a particular fabrication or treatment of ingot or slab
    • C21D8/0415—Rapid solidification; Thin strip casting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/001—Continuous casting of metals, i.e. casting in indefinite lengths of specific alloys
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
    • 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
    • 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
    • C22C38/28—Ferrous alloys, e.g. steel alloys containing chromium with titanium or zirconium
    • 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
    • C22C38/32—Ferrous alloys, e.g. steel alloys containing chromium with boron
    • 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
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/008—Martensite

Landscapes

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

Abstract

The method for the production of flat steel products useful for automotive industry, comprises casting a steel into a cast strip having a thickness of 1-4 mm, hot-rolling the cast strip in-line into a hot-rolled strip having a thickness of higher than 1.5 mm in a continuous process at a final hot-rolling temperature at 800-1100[deg] C and coiling the hot-rolled strip at a coiling temperature of 250-570[deg] C to obtain a hot-rolled strip, which has a minimum tensile strength R m of 800 MPa and a minimum breaking elongation A 8 0 of 5%. The method for the production of flat steel products useful for automotive industry, comprises casting a steel into a cast strip having a thickness of 1-4 mm, hot-rolling the cast strip in-line into a hot-rolled strip having a thickness of higher than 1.5 mm in a continuous process at a final hot-rolling temperature of 800-1100[deg] C and coiling the hot-rolled strip at a coiling temperature of 250-570[deg] C to obtain a hot-rolled strip, which has a minimum tensile strength R m of 800 MPa and a minimum breaking elongation A 8 0 of 5%. The steel forms a complex phase structure. The shaping degree is greater than 20%. The width of the hot-rolled strip is more than 1.600 mm. The hot-rolled strip is cold-rolled with a thickness of 0.5-1.4 mm at 750-850[deg] C to obtain a cold-rolled strip, which has a minimum tensile strength of 800 MPa and a minimum breaking elongation A 5 0 of 10%. The cold or hot-rolled strip is provided with a metallic coating, which is galvanizing. The hot-rolled temperature is 900-1020[deg] C and the coiling temperature is 420-490[deg] C, when the minimum breaking elongation A 8 0 of the obtained hot-rolled strip is 10%. The hot-rolled temperature is 900-1100[deg] C and the coiling temperature is 450-570[deg] C, when the minimum tensile strength of the obtained hot-rolled strip is 1000 MPa.
AT06123139T 2006-10-30 2006-10-30 METHOD FOR PRODUCING FLAT STEEL PRODUCTS FROM A MULTIPHASE STEEL MICRO-ALLOYED WITH BORON ATE432376T1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP06123139A EP1918406B1 (en) 2006-10-30 2006-10-30 Process for manufacturing steel flat products from boron microalloyed multi phase steel

Publications (1)

Publication Number Publication Date
ATE432376T1 true ATE432376T1 (en) 2009-06-15

Family

ID=37782637

Family Applications (1)

Application Number Title Priority Date Filing Date
AT06123139T ATE432376T1 (en) 2006-10-30 2006-10-30 METHOD FOR PRODUCING FLAT STEEL PRODUCTS FROM A MULTIPHASE STEEL MICRO-ALLOYED WITH BORON

Country Status (10)

Country Link
US (1) US20100043513A1 (en)
EP (1) EP1918406B1 (en)
JP (1) JP5350253B2 (en)
KR (1) KR101461583B1 (en)
CN (1) CN101528970B (en)
AT (1) ATE432376T1 (en)
DE (1) DE502006003835D1 (en)
ES (1) ES2325962T3 (en)
PL (1) PL1918406T3 (en)
WO (1) WO2008052919A1 (en)

Cited By (1)

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CN113584270A (en) * 2021-08-09 2021-11-02 新疆八一钢铁股份有限公司 Process for improving processability of steel for barrel industry

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US10071416B2 (en) * 2005-10-20 2018-09-11 Nucor Corporation High strength thin cast strip product and method for making the same
US8435363B2 (en) 2007-10-10 2013-05-07 Nucor Corporation Complex metallographic structured high strength steel and manufacturing same
WO2011100798A1 (en) 2010-02-20 2011-08-25 Bluescope Steel Limited Nitriding of niobium steel and product made thereby
DE102011117572A1 (en) * 2011-01-26 2012-08-16 Salzgitter Flachstahl Gmbh High-strength multiphase steel with excellent forming properties
EP2489748B1 (en) * 2011-02-18 2017-12-13 ThyssenKrupp Steel Europe AG Hot-rolled steel surface product produced from a complex phase steel and method for the manufacture
KR102073442B1 (en) * 2012-06-05 2020-02-04 티센크루프 스틸 유럽 악티엔게젤샤프트 Steel, sheet steel product and process for producing a sheet steel product
CN102766821B (en) * 2012-07-31 2014-10-29 宝山钢铁股份有限公司 High-strength thick steel plate for large heat input welding
JP5942712B2 (en) * 2012-09-06 2016-06-29 新日鐵住金株式会社 Scum weir, thin slab manufacturing method, thin slab manufacturing equipment
AT512399B1 (en) 2012-09-10 2013-08-15 Siemens Vai Metals Tech Gmbh Method for producing a microalloyed tubular steel in a cast-rolled composite plant and microalloyed tubular steel
EP2759614B1 (en) 2013-01-25 2019-01-02 ThyssenKrupp Steel Europe AG Method for generating a flat steel product with an amorphous, semi-amorphous or fine crystalline structure and flat steel product with such structures
DE102013013067A1 (en) * 2013-07-30 2015-02-05 Salzgitter Flachstahl Gmbh Silicon-containing microalloyed high-strength multiphase steel having a minimum tensile strength of 750 MPa and improved properties and processes for producing a strip of this steel
EP2924141B1 (en) * 2014-03-25 2017-11-15 ThyssenKrupp Steel Europe AG Cold rolled steel flat product and method for its production
CN105950984B (en) * 2016-05-06 2018-03-27 武汉钢铁有限公司 Tensile strength 650MPa level hot rolling Multiphase Steels and its production method
DE102017209982A1 (en) * 2017-06-13 2018-12-13 Thyssenkrupp Ag High strength steel sheet with improved formability
CN113481436A (en) * 2021-06-29 2021-10-08 鞍钢股份有限公司 800 MPa-grade hot-rolled complex phase steel and production method thereof

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Also Published As

Publication number Publication date
KR101461583B1 (en) 2014-11-13
US20100043513A1 (en) 2010-02-25
CN101528970B (en) 2012-10-03
DE502006003835D1 (en) 2009-07-09
WO2008052919A1 (en) 2008-05-08
ES2325962T3 (en) 2009-09-25
EP1918406A1 (en) 2008-05-07
EP1918406B1 (en) 2009-05-27
PL1918406T3 (en) 2009-10-30
CN101528970A (en) 2009-09-09
JP5350253B2 (en) 2013-11-27
KR20090084815A (en) 2009-08-05
JP2010508435A (en) 2010-03-18

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