EP1453984B8 - Method for the production of hot strip or sheet from a micro-alloyed steel - Google Patents

Method for the production of hot strip or sheet from a micro-alloyed steel Download PDF

Info

Publication number
EP1453984B8
EP1453984B8 EP01270630A EP01270630A EP1453984B8 EP 1453984 B8 EP1453984 B8 EP 1453984B8 EP 01270630 A EP01270630 A EP 01270630A EP 01270630 A EP01270630 A EP 01270630A EP 1453984 B8 EP1453984 B8 EP 1453984B8
Authority
EP
European Patent Office
Prior art keywords
hot strip
temperature
raw material
hot
micro
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.)
Expired - Lifetime
Application number
EP01270630A
Other languages
German (de)
French (fr)
Other versions
EP1453984A1 (en
EP1453984B1 (en
Inventor
Wilfried Hänsch
Werner Scholten
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.)
ThyssenKrupp Steel Europe AG
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
Application filed by ThyssenKrupp Stahl AG filed Critical ThyssenKrupp Stahl AG
Publication of EP1453984A1 publication Critical patent/EP1453984A1/en
Application granted granted Critical
Publication of EP1453984B1 publication Critical patent/EP1453984B1/en
Publication of EP1453984B8 publication Critical patent/EP1453984B8/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
    • C21D8/021—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips involving a particular fabrication or treatment of ingot or slab
    • 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
    • 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
    • C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
    • 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

Landscapes

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

Abstract

The invention relates to a method for producing hot strip or hot plate, in which a microalloyed steel, which, apart from microalloying elements, comprises (in weight %) C: 0.05-0.12%; Si:0.2-0.5%; Mn:1.5-2.2 %; Al:0.02-0.05%; P:<=0.025%; S:<=0.01%; with the remainder being iron and unavoidable impurities, is cast to form a raw material such as slabs, blooms or thin slabs; in which the raw material is heated to a temperature of 1300-1350° C.; in which the heated raw material is rough rolled at a degree of deformation of 36% to 43%; in which the rough rolled raw material is thermomechanically hot rolled at a final rolling temperature which exceeds the Ac3 temperature so as to form a hot strip; in which the hot strip is cooled at a cooling rate of at least 15° C./s to a coiling temperature of at least 590° C. and at most 630° C. at which temperature the cooled hot strip is finally coiled. With such a method, hot strip which is of particularly high strength even at larger thicknesses can be produced economically.
EP01270630A 2000-12-16 2001-12-15 Method for the production of hot strip or sheet from a micro-alloyed steel Expired - Lifetime EP1453984B8 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10062919A DE10062919A1 (en) 2000-12-16 2000-12-16 Process for producing hot strip or sheet from a microalloyed steel
DE10062919 2001-12-15
PCT/EP2001/014829 WO2002048410A1 (en) 2000-12-16 2001-12-15 Method for the production of hot strip or sheet from a micro-alloyed steel

Publications (3)

Publication Number Publication Date
EP1453984A1 EP1453984A1 (en) 2004-09-08
EP1453984B1 EP1453984B1 (en) 2005-04-13
EP1453984B8 true EP1453984B8 (en) 2005-07-27

Family

ID=7667534

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01270630A Expired - Lifetime EP1453984B8 (en) 2000-12-16 2001-12-15 Method for the production of hot strip or sheet from a micro-alloyed steel

Country Status (6)

Country Link
US (1) US20040040633A1 (en)
EP (1) EP1453984B8 (en)
AT (1) ATE293175T1 (en)
DE (2) DE10062919A1 (en)
ES (1) ES2240337T3 (en)
WO (1) WO2002048410A1 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1396550A1 (en) * 2002-08-28 2004-03-10 ThyssenKrupp Stahl AG Method for manufacturing hot strip
DE502006003830D1 (en) * 2006-10-30 2009-07-09 Thyssenkrupp Steel Ag A method for producing steel flat products from a complex phase structure forming steel
ATE432376T1 (en) * 2006-10-30 2009-06-15 Thyssenkrupp Steel Ag METHOD FOR PRODUCING FLAT STEEL PRODUCTS FROM A MULTIPHASE STEEL MICRO-ALLOYED WITH BORON
FI20095528A (en) * 2009-05-11 2010-11-12 Rautaruukki Oyj Process for producing a hot rolled strip steel product and hot rolled strip steel product
FI122143B (en) * 2009-10-23 2011-09-15 Rautaruukki Oyj Procedure for the manufacture of a high-strength galvanized profile product and profile product
JP5365673B2 (en) * 2011-09-29 2013-12-11 Ｊｆｅスチール株式会社 Hot rolled steel sheet with excellent material uniformity and method for producing the same
KR101638715B1 (en) 2012-01-31 2016-07-11 제이에프이 스틸 가부시키가이샤 Hot-rolled steel for power generator rim and method for manufacturing same
MX2017008027A (en) 2014-12-19 2017-10-20 Nucor Corp Hot rolled light-gauge martensitic steel sheet and method for making the same.
CN111519105B (en) * 2020-05-12 2021-06-15 首钢集团有限公司 Automobile component steel, preparation method thereof and automobile component

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2133744B2 (en) * 1971-07-07 1973-07-12 August Thyssen-Hütte AG, 4100 Duisburg THE USE OF A FULLY KILLED STEEL FOR ARTICLES FROM HOT-ROLLED STRIP
CA1003311A (en) * 1972-12-31 1977-01-11 Hiroshi Takechi High tensile strength structural steel and the manufacture thereof
JPS58136719A (en) * 1982-02-05 1983-08-13 Nippon Kokan Kk <Nkk> Manufacture of high strength hot rolled steel plate
JPS61281814A (en) * 1985-06-06 1986-12-12 Kobe Steel Ltd Production of high-strength hot rolled steel sheet having low sensitivity to bauschinger effect
JPS63223130A (en) * 1987-03-13 1988-09-16 Kawasaki Steel Corp Manufacture of high-tensile hot-rolled steel plate excellent in workability
JPH059572A (en) * 1991-07-08 1993-01-19 Sumitomo Metal Ind Ltd Production of hot rolled steel plate excellent in workability
FR2688009B1 (en) * 1992-02-28 1994-05-27 Lorraine Laminage PROCESS FOR THE PREPARATION OF A STEEL SHEET AND STEEL SHEET OBTAINED BY THIS PROCESS.
JP3767132B2 (en) * 1997-11-11 2006-04-19 Ｊｆｅスチール株式会社 Method for producing high-strength hot-rolled steel sheet having high ductility and excellent material uniformity

Also Published As

Publication number Publication date
DE10062919A1 (en) 2002-06-27
EP1453984A1 (en) 2004-09-08
ATE293175T1 (en) 2005-04-15
WO2002048410A1 (en) 2002-06-20
ES2240337T3 (en) 2005-10-16
DE50105924D1 (en) 2005-05-19
US20040040633A1 (en) 2004-03-04
EP1453984B1 (en) 2005-04-13

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