EP1918402A1 - Procédé de fabrication de produits plats en acier à partir d'un acier formant une structure de phases complexes - Google Patents

Procédé de fabrication de produits plats en acier à partir d'un acier formant une structure de phases complexes Download PDF

Info

Publication number
EP1918402A1
EP1918402A1 EP06123134A EP06123134A EP1918402A1 EP 1918402 A1 EP1918402 A1 EP 1918402A1 EP 06123134 A EP06123134 A EP 06123134A EP 06123134 A EP06123134 A EP 06123134A EP 1918402 A1 EP1918402 A1 EP 1918402A1
Authority
EP
European Patent Office
Prior art keywords
strip
hot
cold
thickness
rolled
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
EP06123134A
Other languages
German (de)
English (en)
Other versions
EP1918402B1 (fr
Inventor
Brigitte Dr.-Ing. Hammer
Thomas Dr.-Ing. Heller
Dr. Schmitz Johann Wilhelm
Jochen Dr. Wans
Andreas Nuss
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 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
Priority to PL06123134T priority Critical patent/PL1918402T3/pl
Application filed by ThyssenKrupp Steel AG filed Critical ThyssenKrupp Steel AG
Priority to ES06123134T priority patent/ES2325960T3/es
Priority to DE502006003830T priority patent/DE502006003830D1/de
Priority to EP06123134A priority patent/EP1918402B1/fr
Priority to AT06123134T priority patent/ATE432372T1/de
Priority to JP2009533820A priority patent/JP5232793B2/ja
Priority to US12/447,626 priority patent/US20090277546A1/en
Priority to KR1020097007483A priority patent/KR101458039B1/ko
Priority to PCT/EP2007/061388 priority patent/WO2008052917A1/fr
Priority to CN2007800400708A priority patent/CN101528969B/zh
Publication of EP1918402A1 publication Critical patent/EP1918402A1/fr
Application granted granted Critical
Publication of EP1918402B1 publication Critical patent/EP1918402B1/fr
Not-in-force 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
    • 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
    • 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
    • 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
    • C21D8/0426—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
    • C21D8/0447—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
    • C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
    • 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
    • C22C38/14—Ferrous alloys, e.g. steel alloys containing 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
    • C22C38/28—Ferrous alloys, e.g. steel alloys containing chromium with titanium or zirconium
    • 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
    • C21D2211/001—Austenite
    • 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
    • C21D2211/002—Bainite
    • 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

Definitions

  • the invention relates to a method for producing steel flat products, such as strips or sheet metal blanks, from high-strength complex phase steels.
  • CP steels belong to the group of multiphase steels. These are usually steels whose properties are determined by the type, amount and arrangement of the phases of the structure.
  • the structure therefore has at least two phases (eg ferrite, martensite, bainite). This gives them a strength / formability combination that is superior to conventional steels.
  • multiphase steels are of particular interest for the automotive industry because of their high strength, they permit the use of lower material thicknesses and concomitantly a reduction in vehicle weight and, secondly, the safety of the vehicle body in the event of a collision (crash behavior) .
  • multiphase steels with at least constant strength of the overall body allow a reduction in the sheet thickness of a component produced from such multiphase steels compared to a body produced from conventional steels.
  • multiphase steels are melted in the converter steelworks and on a continuous casting plant slabs or Cast thin slabs, which are then hot rolled into hot strip and reeled.
  • the mechanical properties of the hot strip can be varied.
  • the hot strips can be cold rolled to cold strip to provide thinner sheet thicknesses ( EP 0 910 675 B1 . EP 0 966 547 B1 . EP 1 169 486 B1 . EP 1 319 725 B1 . EP 1 398 390 A1 ).
  • This preparation route presents problems in particular when casting peritectically solidifying compositions.
  • These steel grades there is the danger of the formation of longitudinal cracks during continuous casting.
  • the formation of such longitudinal cracks can reduce the quality of the hot strips produced from the cast slabs or thin slabs so much that they become unusable.
  • extensive measures such as increased insulation costs, are required, which can go so far that the processing of such steel grades becomes uneconomical.
  • the cast strip is then hot rolled in-line in one or more passes of between 25% and 70% strain to a hot strip.
  • the final temperature of hot rolling is above the Ar 3 temperature.
  • the hot strip obtained is then cooled in two stages. In the first stage of this cooling, a cooling rate of 5 - 100 ° C / s is maintained until a temperature between 400 - 550 ° C is reached. At this temperature, the hot strip is allowed to sit for a pause time required to achieve bainitic transformation of the steel with a residual austenite content greater than 5% enable. The formation of perlite should be avoided.
  • the object of the invention was therefore to provide a method by means of which high-strength steel flat products can be produced over a wide range of geometric dimensions with reduced manufacturing outlay.
  • this object has been achieved by a method for producing steel flat products, according to the invention, a complex-phase structure forming steel, the (in wt .-%) 0, 08 - 0.11% C, 1.00-1.30% Mn, up to 0.030% P, up to 0.004% S, 0.60-0.80% Si, up to 0.05% Al, up to 0.0060% N, 0.30-0.80% Cr, 0.060-0.120% Ti and the remainder containing iron and unavoidable impurities to a cast strip a thickness of 1 to 4 mm, in which the cast strip in a continuous operation with a degree of deformation of more than 20% in-line at a lying in the range of 900 - 1100 ° C hot rolling end temperature to a hot strip with a thickness of 0 , 5 - 3.2 mm, and in which the hot strip is rewound at a coiler temperature of 550 - 620 ° C to obtain a hot strip whose tensile strength R
  • the invention uses the possibility of strip casting to process a high-strength, peritectically solidifying complex phase steel into a hot strip. Since the cast strip itself already has a small thickness, in the course of hot rolling of this strip only relatively low degrees of deformation must be maintained in order to produce flat products with small thicknesses, as are needed in particular in the automotive industry. Thus, by specifying a corresponding initial thickness of the cast strip, it is easily possible to produce hot strips using the method according to the invention, which have a maximum thickness of 1.5 mm with an optimum distribution of properties and from which, for example, elements for the support structure of an automobile can be produced.
  • the invention makes it possible to manufacture high-strength hot strips consisting of a complex phase steel of the specified composition processed according to the invention, whose width is more than 1,200 mm, in particular more than 1,600 mm.
  • the use according to the invention of the strip casting method in the processing of high-strength steels of the type assembled according to the invention offers, in addition to the above-mentioned advantages, due to its process-specific properties and manipulated variables (eg hot rolling end temperature, cooling, coiling temperature) the possibility of also critical steel compositions according to the invention with respect to their solidification behavior to safely shed processed species.
  • process-specific properties and manipulated variables eg hot rolling end temperature, cooling, coiling temperature
  • critical steel compositions according to the invention with respect to their solidification behavior to safely shed processed species.
  • the very rapid solidification of the cast strip which is characteristic of strip casting, leads to a significantly reduced risk of the formation of center segregations compared with conventional production, with the result that the hot strip produced according to the invention has a particularly uniform distribution of properties and microstructure over its cross section and its length.
  • the hot strip produced according to the invention has high strengths of at least 800 MPa, without having to observe a special cooling cycle of the hot strip between the end of the hot rolling and the coiling, as described for example in US Pat EP 1 072 689 B1 is prescribed by the need for a cooling break.
  • the method according to the invention merely has to ensure that the hot rolling ends in a relatively narrow temperature window and that the reeling is also carried out in a precisely defined temperature range. In between there is a one-stage cooling down.
  • a further advantage of the procedure according to the invention is that an extension of the range of mechanical properties of the strip produced according to the invention based on only one steel analysis can be achieved by varying the cooling and rolling conditions.
  • Hot strips produced according to the invention are particularly suitable for further processing into cold rolled strip. Accordingly, a practice-oriented embodiment of the invention provides that the hot strip is cold rolled to a cold strip having a thickness of 0.5-1.4 mm, in particular 0.7 mm to 1.3 mm, as is required for the construction of automobile bodies.
  • the cold strip can be annealed at an annealing temperature of 750-850 ° C.
  • tensile strengths of at least 800 MPa can be reliably ensured.
  • the breaking elongation A 50 of the cold strip is just as safe at least 10%.
  • the cold strip is provided in a conventional manner with a metallic coating, which may be, for example, a galvanizing.
  • the hot strip produced from the steel B was cold rolled after the coiling and pickling to a 0.7 mm thick cold strip and annealed at an annealing temperature of 800 ° C in the flow to recrystallize the strip.
  • the tensile strength R m of the cold strip thus obtained was 838 MPa.
EP06123134A 2006-10-30 2006-10-30 Procédé de fabrication de produits plats en acier à partir d'un acier formant une structure de phases complexes Not-in-force EP1918402B1 (fr)

Priority Applications (10)

Application Number Priority Date Filing Date Title
ES06123134T ES2325960T3 (es) 2006-10-30 2006-10-30 Procedimiento para fabricar productos planos de acero a partir de un acero que forma una estructura de fases complejas.
DE502006003830T DE502006003830D1 (de) 2006-10-30 2006-10-30 Verfahren zum Herstellen von Stahl-Flachprodukten aus einem ein Komplexphasen-Gefüge bildenden Stahl
EP06123134A EP1918402B1 (fr) 2006-10-30 2006-10-30 Procédé de fabrication de produits plats en acier à partir d'un acier formant une structure de phases complexes
AT06123134T ATE432372T1 (de) 2006-10-30 2006-10-30 Verfahren zum herstellen von stahl-flachprodukten aus einem ein komplexphasen-gefüge bildenden stahl
PL06123134T PL1918402T3 (pl) 2006-10-30 2006-10-30 Sposób wytwarzania płaskich produktów stalowych ze stali tworzącej strukturę o fazach złożonych
US12/447,626 US20090277546A1 (en) 2006-10-30 2007-10-24 Method for manufacturing flat steel products from a steel forming a complex phase microstructure
JP2009533820A JP5232793B2 (ja) 2006-10-30 2007-10-24 複合相ミクロ組織を形成する鋼からフラット鋼生成物を製造する方法
KR1020097007483A KR101458039B1 (ko) 2006-10-30 2007-10-24 복상 조직을 형성하는 강으로부터 평판형 강 제품을 제조하는 방법
PCT/EP2007/061388 WO2008052917A1 (fr) 2006-10-30 2007-10-24 Procédé de fabrication de produits plats en acier à partir d'un acier formant une structure à phase complexe
CN2007800400708A CN101528969B (zh) 2006-10-30 2007-10-24 由形成复相显微组织的钢制备扁钢产品的方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP06123134A EP1918402B1 (fr) 2006-10-30 2006-10-30 Procédé de fabrication de produits plats en acier à partir d'un acier formant une structure de phases complexes

Publications (2)

Publication Number Publication Date
EP1918402A1 true EP1918402A1 (fr) 2008-05-07
EP1918402B1 EP1918402B1 (fr) 2009-05-27

Family

ID=37733972

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06123134A Not-in-force EP1918402B1 (fr) 2006-10-30 2006-10-30 Procédé de fabrication de produits plats en acier à partir d'un acier formant une structure de phases complexes

Country Status (10)

Country Link
US (1) US20090277546A1 (fr)
EP (1) EP1918402B1 (fr)
JP (1) JP5232793B2 (fr)
KR (1) KR101458039B1 (fr)
CN (1) CN101528969B (fr)
AT (1) ATE432372T1 (fr)
DE (1) DE502006003830D1 (fr)
ES (1) ES2325960T3 (fr)
PL (1) PL1918402T3 (fr)
WO (1) WO2008052917A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101928875A (zh) * 2009-06-22 2010-12-29 鞍钢股份有限公司 具有良好成形性能的高强度冷轧钢板及其制备方法

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10071416B2 (en) * 2005-10-20 2018-09-11 Nucor Corporation High strength thin cast strip product and method for making the same
EP2209926B1 (fr) * 2007-10-10 2019-08-07 Nucor Corporation Acier à structure métallographique complexe et son procédé de fabrication
US20110277886A1 (en) 2010-02-20 2011-11-17 Nucor Corporation Nitriding of niobium steel and product made thereby
CN102303212B (zh) * 2011-06-24 2013-04-10 成都申信达机械有限公司 一种湿喷机衬板的制造工艺
CN103305770B (zh) * 2012-03-14 2015-12-09 宝山钢铁股份有限公司 一种薄带连铸550MPa级高强耐大气腐蚀钢带的制造方法
CN103305759B (zh) * 2012-03-14 2014-10-29 宝山钢铁股份有限公司 一种薄带连铸700MPa级高强耐候钢制造方法
CN103302255B (zh) * 2012-03-14 2015-10-28 宝山钢铁股份有限公司 一种薄带连铸700MPa级高强耐大气腐蚀钢制造方法
ES2608036T3 (es) * 2012-08-03 2017-04-05 Tata Steel Ijmuiden Bv Un proceso para producir tiras de acero laminado en caliente y una tira de acero producida con este
NZ724754A (en) * 2014-04-30 2017-12-22 Jfe Steel Corp High-strength steel sheet for containers and method for producing the same
JP6778943B2 (ja) 2014-12-19 2020-11-04 ニューコア・コーポレーション 熱間圧延軽量マルテンサイト鋼板及びその製造方法
CN104480397B (zh) * 2014-12-19 2017-06-23 山东钢铁股份有限公司 一种700MPa级热轧汽车结构用钢及其制备方法
DE102016202005A1 (de) * 2016-02-10 2017-08-10 Thyssenkrupp Ag Nutzfahrzeugrad und Verwendung

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998040522A1 (fr) * 1997-03-13 1998-09-17 Thyssen Krupp Stahl Ag Procede permettant de fabriquer un feuillard d'acier a resistance et a malleabilite elevees
EP1072689A1 (fr) * 1999-07-30 2001-01-31 Usinor Procédé de fabrication de bandes minces en acier de type "TRIP" , et bandes minces ainsi obtenues
FR2798871A1 (fr) * 1999-09-24 2001-03-30 Usinor Procede de fabrication de bandes d'acier au carbone, notamment d'acier pour emballages, et bandes ainsi produites
WO2002026424A1 (fr) * 2000-09-29 2002-04-04 Ishikawajima-Harima Heavy Industries Company Limited Production de bandes d'acier fines
WO2002048410A1 (fr) * 2000-12-16 2002-06-20 Thyssenkrupp Stahl Ag Procede de production de feuillards ou de toles a chaud en acier microallie

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5470529A (en) * 1994-03-08 1995-11-28 Sumitomo Metal Industries, Ltd. High tensile strength steel sheet having improved formability
HU220900B1 (en) * 1996-07-12 2002-06-29 Thyssen Stahl Ag Hot-rolled steel strip and method of making it
JP3931455B2 (ja) * 1998-11-25 2007-06-13 Ｊｆｅスチール株式会社 缶用鋼板およびその製造方法
CN1107122C (zh) * 2000-02-29 2003-04-30 济南济钢设计院 奥贝马钢及其制备方法
AUPQ779900A0 (en) * 2000-05-26 2000-06-22 Bhp Steel (Jla) Pty Limited Hot rolling thin strip
AUPR047900A0 (en) * 2000-09-29 2000-10-26 Bhp Steel (Jla) Pty Limited A method of producing steel
EP1327697A4 (fr) * 2000-10-19 2009-11-11 Jfe Steel Corp Tole d'acier plaque de zinc et procede de preparation de cette tole, et procede de fabrication d'un article forme par usinage a la presse
JP3927384B2 (ja) * 2001-02-23 2007-06-06 新日本製鐵株式会社 切り欠き疲労強度に優れる自動車用薄鋼板およびその製造方法
DE10128544C2 (de) * 2001-06-13 2003-06-05 Thyssenkrupp Stahl Ag Höherfestes, kaltumformbares Stahlblech, Verfahren zu seiner Herstellung und Verwendung eines solchen Blechs
US6878920B2 (en) * 2002-06-28 2005-04-12 Intel Corporation Optical receiver circuit, method, and system
WO2005095664A1 (fr) * 2004-03-31 2005-10-13 Jfe Steel Corporation Mince feuille d'acier de rigidite et de resistane elecvee et procede pour sa production

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998040522A1 (fr) * 1997-03-13 1998-09-17 Thyssen Krupp Stahl Ag Procede permettant de fabriquer un feuillard d'acier a resistance et a malleabilite elevees
EP1072689A1 (fr) * 1999-07-30 2001-01-31 Usinor Procédé de fabrication de bandes minces en acier de type "TRIP" , et bandes minces ainsi obtenues
FR2798871A1 (fr) * 1999-09-24 2001-03-30 Usinor Procede de fabrication de bandes d'acier au carbone, notamment d'acier pour emballages, et bandes ainsi produites
WO2002026424A1 (fr) * 2000-09-29 2002-04-04 Ishikawajima-Harima Heavy Industries Company Limited Production de bandes d'acier fines
WO2002048410A1 (fr) * 2000-12-16 2002-06-20 Thyssenkrupp Stahl Ag Procede de production de feuillards ou de toles a chaud en acier microallie

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
LINDENBERG H-U ET AL: "EUROSTRIP - STATE OF THE ART OF STRIP CASTING EUROSTRIP - STAND DER TECHNIK BEIM BANDGIESSEN", STAHL UND EISEN, VERLAG STAHLEISEN, DUSSELDORF, DE, vol. 121, no. 12, 14 December 2001 (2001-12-14), pages 97 - 104, XP001103986, ISSN: 0340-4803 *
SENK D ET AL: "UMFORMEN UND KUEHLEN VON DIREKTGEGOSSENEM STAHLBAND IN-LINE ROLLING AND COOLING OF DIRECT CAST STEEL STRIP", STAHL UND EISEN, VERLAG STAHLEISEN, DUSSELDORF, DE, vol. 120, no. 6, 16 June 2000 (2000-06-16), pages 65 - 69, XP001118293, ISSN: 0340-4803 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101928875A (zh) * 2009-06-22 2010-12-29 鞍钢股份有限公司 具有良好成形性能的高强度冷轧钢板及其制备方法

Also Published As

Publication number Publication date
EP1918402B1 (fr) 2009-05-27
DE502006003830D1 (de) 2009-07-09
KR101458039B1 (ko) 2014-11-03
JP5232793B2 (ja) 2013-07-10
CN101528969B (zh) 2012-01-11
KR20090090300A (ko) 2009-08-25
PL1918402T3 (pl) 2009-10-30
WO2008052917A1 (fr) 2008-05-08
ES2325960T3 (es) 2009-09-25
US20090277546A1 (en) 2009-11-12
JP2010508433A (ja) 2010-03-18
CN101528969A (zh) 2009-09-09
ATE432372T1 (de) 2009-06-15

Similar Documents

Publication Publication Date Title
EP1918406B1 (fr) Procédé pour la fabrication de produits plats à partir d'un acier à plusieurs phases micro-allié en bore
EP1918402B1 (fr) Procédé de fabrication de produits plats en acier à partir d'un acier formant une structure de phases complexes
EP1918403B1 (fr) Procédé de fabrication de produits plats en acier à partir d'un acier formant une structure marténsitique
EP2690183B1 (fr) Produit plat en acier laminé à chaud et son procédé de fabrication
EP1573075B1 (fr) Procede de fabrication d'un produit en acier
WO2006048034A1 (fr) Bande ou tole d'acier extremement resistante a proprietes twip et procede de fabrication de ladite bande a l'aide de la 'coulee directe de bandes'
DE3825634C2 (de) Verfahren zur Erzeugung von Warmbad oder Grobblechen
WO2012095232A1 (fr) Procédé de fabrication d'un produit en acier plat laminé a chaud
EP2767601B1 (fr) Produit plat en acier laminé à froid pour applications d'emboutissage profond et son procédé de fabrication
EP2840159B1 (fr) Procédé destiné à la fabrication d'un composant en acier
EP1918405B1 (fr) Procédé pour la fabrication de produits plats à partir d'un acier à plusieurs phases allié en silice
WO2015117934A1 (fr) Produit en acier plat de résistance élevée ayant une texture à base de bainite et de martensite et procédé de fabrication d'un tel produit en acier plat
EP2690184A1 (fr) Cold rolled steel flat product and method for its production
DE102014005662A1 (de) Werkstoffkonzept für einen umformbaren Leichtbaustahl
EP1398390B1 (fr) Acier ferritique-martensitique possédant une resistance élevée ayant une fine microstructure
EP1918404B1 (fr) Procédé pour la fabrication de produits plats à partir d'un acier à plusieurs phases allié en aluminium
EP1399598B2 (fr) Procede pour fabriquer des produits en acier de grande resistance et de bonne malleabilite, formes a froid a partir d'un feuillard lamine a chaud
EP1453984B1 (fr) Procede de production de feuillards ou de toles a chaud en acier microallie
EP1396549B1 (fr) Procédé pour la fabrication d'une bande d' acier exempt de perlite laminée à chaud et bande à chaud obtenue
EP1396550A1 (fr) Procédé pour la fabrication d' une bande à chaud
EP1411140B1 (fr) Procédé de fabrication de tôles ou de bandes d'acier laminées à froid ayant une excellente formabilité

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR MK RS

17P Request for examination filed

Effective date: 20081001

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

AKX Designation fees paid

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REF Corresponds to:

Ref document number: 502006003830

Country of ref document: DE

Date of ref document: 20090709

Kind code of ref document: P

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: TROESCH SCHEIDEGGER WERNER AG

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2325960

Country of ref document: ES

Kind code of ref document: T3

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090527

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090527

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090927

REG Reference to a national code

Ref country code: PL

Ref legal event code: T3

RAP2 Party data changed (patent owner data changed or rights of a patent transferred)

Owner name: THYSSENKRUPP STEEL EUROPE AG

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090827

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090527

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090527

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090927

REG Reference to a national code

Ref country code: IE

Ref legal event code: FD4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090527

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090527

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090527

Ref country code: IE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090527

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090527

NLT2 Nl: modifications (of names), taken from the european patent patent bulletin

Owner name: THYSSENKRUPP STEEL EUROPE AG

Effective date: 20091118

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090527

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090827

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20100302

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20091031

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090828

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20091030

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20091128

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090527

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090527

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: PL

Payment date: 20120924

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20121017

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20121017

Year of fee payment: 7

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20131031

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20131031

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20141107

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20131031

REG Reference to a national code

Ref country code: PL

Ref legal event code: LAPE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20131030

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 10

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 11

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 12

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20201029

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20201021

Year of fee payment: 15

Ref country code: AT

Payment date: 20201021

Year of fee payment: 15

Ref country code: GB

Payment date: 20201019

Year of fee payment: 15

Ref country code: FR

Payment date: 20201019

Year of fee payment: 15

Ref country code: DE

Payment date: 20201019

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20201016

Year of fee payment: 15

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 502006003830

Country of ref document: DE

REG Reference to a national code

Ref country code: NL

Ref legal event code: MM

Effective date: 20211101

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 432372

Country of ref document: AT

Kind code of ref document: T

Effective date: 20211030

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20211031

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20211030

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20211101

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20211030

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20220503

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20211031

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20211030

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20211031

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20211030