EP1918406A1 - Procédé pour la fabrication de produits plats à partir d'un acier à plusieurs phases micro-allié en bore - Google Patents

Procédé pour la fabrication de produits plats à partir d'un acier à plusieurs phases micro-allié en bore Download PDF

Info

Publication number
EP1918406A1
EP1918406A1 EP06123139A EP06123139A EP1918406A1 EP 1918406 A1 EP1918406 A1 EP 1918406A1 EP 06123139 A EP06123139 A EP 06123139A EP 06123139 A EP06123139 A EP 06123139A EP 1918406 A1 EP1918406 A1 EP 1918406A1
Authority
EP
European Patent Office
Prior art keywords
hot
strip
temperature
rolled
cold
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
EP06123139A
Other languages
German (de)
English (en)
Other versions
EP1918406B1 (fr
Inventor
Brigitte Dr.-Ing. Hammer
Thomas Dr.-Ing. Heller
Johann Wilhelm Dr. Schmitz
Jochen Dr. Wans
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 AT06123139T priority Critical patent/ATE432376T1/de
Application filed by ThyssenKrupp Steel AG filed Critical ThyssenKrupp Steel AG
Priority to ES06123139T priority patent/ES2325962T3/es
Priority to EP06123139A priority patent/EP1918406B1/fr
Priority to PL06123139T priority patent/PL1918406T3/pl
Priority to DE502006003835T priority patent/DE502006003835D1/de
Priority to CN2007800394406A priority patent/CN101528970B/zh
Priority to JP2009533822A priority patent/JP5350253B2/ja
Priority to US12/447,621 priority patent/US20100043513A1/en
Priority to KR1020097007485A priority patent/KR101461583B1/ko
Priority to PCT/EP2007/061390 priority patent/WO2008052919A1/fr
Publication of EP1918406A1 publication Critical patent/EP1918406A1/fr
Application granted granted Critical
Publication of EP1918406B1 publication Critical patent/EP1918406B1/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
    • 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
    • C21D8/0421—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

Definitions

  • the invention relates to a method for producing steel flat products, such as strips or sheet metal blanks, from high-strength, boron microalloyed steels.
  • 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.
  • 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.
  • 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 cast on a continuous casting plant into slabs or thin slabs, which are then hot rolled into hot strip and coiled.
  • 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 ).
  • a problem in the production of flat products made of high-strength multiphase steels with tensile strengths of more than 800 MPa is that high rolling forces must be applied when rolling such steels.
  • high-strength hot strips made of steels of the type normally used in the currently available production plants are generally used Speech standing type often only in a width and thickness can be made available that are no longer fully meet the demands made in the field of automotive engineering today.
  • tapes of small thicknesses with sufficient widths can be poorly represented on conventional systems. It also turns out in conventional practice in practice difficult to produce multiphase steels cold strips with strengths of more than 800 MPa.
  • 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 break time needed to achieve a bainitic transformation of the steel to a residual austenite portion of more than 5%. 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, in which a multiphase structure forming steel, the (in wt .-%) 0.08 - 0.12% C, 1 , 70-2.00% Mn, up to 0.030% P, up to 0.004% S, up to 0.20% Si, 0.01-0.06% Al, up to 0.0060% N, 0.20 - 0.50% Cr, 0.010 - 0.050% Ti, 0.0010 - 0.0045% B and the remainder contains iron and unavoidable impurities to a cast strip with 1 to 4 mm thick, in which the cast strip is made into a hot strip with a thickness of 0 in a continuous operation with a degree of deformation of more than 20% in-line at a hot rolling end temperature ranging from 800 to 1100 ° C , 5 - 3.2 mm, and in which the hot strip is rewound at a coiler temperature of 250 - 570 ° C to obtain a hot strip whose
  • the invention uses the possibility of strip casting to process a particularly high-strength, possibly peritectically solidifying multiphase 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 small degrees of deformation must be maintained in order to produce flat products with small thicknesses, as are required in particular in the automotive industry. Thus, by specifying a corresponding output thickness of the cast strip, it is easily possible to produce hot strips with the method according to the invention, which have a maximum property distribution of at most 1.5 mm 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 martensitic 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 the possibility, in addition to the above-mentioned advantages due to its process-specific properties and manipulated variables (eg hot rolling end temperature, cooling, coiling temperature), of also critical steel compositions according to the invention with regard 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 regard 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 through the Necessity of a cold break is required.
  • it merely has to be ensured 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 in a conventional manner provided with a metallic coating, which may be, for example, a galvanizing.
  • the strength and elongation values according to the invention produced hot strips can be adjusted over a wide range by an appropriate vote of the Hotwalzend- and reel temperatures.
  • R m tensile strength
  • the hot rolling end temperature in the range of 900-1100 ° C. and the coiling temperature in the range of 450-570 ° C. selected.
  • the tapes cast from steels A and B were hot rolled into a hot strip whose thickness was 1.25 mm in six different trials immediately following in-line strip casting at a hot rolling end temperature WET. Subsequently, each hot strip obtained has been cooled directly in a cooling step to a coiler temperature HT and coiled. After coiling, the hot strips produced from steels A and B each had a tensile strength R m and an elongation at break A 80 , which, like the hot rolling end temperature WET and reel temperature HT, respectively, maintained in their preparation, are given in Table 2.
  • the hot strip of steel B produced according to test 4 was cold-rolled to a 0.7 mm thick cold-rolled strip and annealed at a temperature of 800 ° C. in a continuous process in order to recrystallize the strip.
  • the tensile strength R m of the cold strip thus obtained was 835 MPa.

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)
EP06123139A 2006-10-30 2006-10-30 Procédé pour la fabrication de produits plats à partir d'un acier à plusieurs phases micro-allié en bore Not-in-force EP1918406B1 (fr)

Priority Applications (10)

Application Number Priority Date Filing Date Title
ES06123139T ES2325962T3 (es) 2006-10-30 2006-10-30 Procedimiento para fabricar productos planos de acero a partir de un acero multifasico microaleado con boro.
EP06123139A EP1918406B1 (fr) 2006-10-30 2006-10-30 Procédé pour la fabrication de produits plats à partir d'un acier à plusieurs phases micro-allié en bore
PL06123139T PL1918406T3 (pl) 2006-10-30 2006-10-30 Sposób wytwarzania płaskich produktów stalowych z wielofazowej stali mikrostopowej z borem
DE502006003835T DE502006003835D1 (de) 2006-10-30 2006-10-30 Verfahren zum Herstellen von Stahl-Flachprodukten aus einem mit Bor mikrolegierten Mehrphasenstahl
AT06123139T ATE432376T1 (de) 2006-10-30 2006-10-30 Verfahren zum herstellen von stahl-flachprodukten aus einem mit bor mikrolegierten mehrphasenstahl
JP2009533822A JP5350253B2 (ja) 2006-10-30 2007-10-24 ボロンミクロ合金化多相鋼からフラット鋼生成物を製造する方法
CN2007800394406A CN101528970B (zh) 2006-10-30 2007-10-24 由硼微合金化多相钢制备扁钢产品的方法
US12/447,621 US20100043513A1 (en) 2006-10-30 2007-10-24 Method for manufacturing flat steel products from boron microalloyed multi-phase steel
KR1020097007485A KR101461583B1 (ko) 2006-10-30 2007-10-24 보론으로 미량 합금화된 다상 강으로부터 평판형 강 제품을 제조하는 방법
PCT/EP2007/061390 WO2008052919A1 (fr) 2006-10-30 2007-10-24 Procédé de fabrication de produits plats en acier à partir d'un acier multiphase micro-allié à du bore

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP06123139A EP1918406B1 (fr) 2006-10-30 2006-10-30 Procédé pour la fabrication de produits plats à partir d'un acier à plusieurs phases micro-allié en bore

Publications (2)

Publication Number Publication Date
EP1918406A1 true EP1918406A1 (fr) 2008-05-07
EP1918406B1 EP1918406B1 (fr) 2009-05-27

Family

ID=37782637

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06123139A Not-in-force EP1918406B1 (fr) 2006-10-30 2006-10-30 Procédé pour la fabrication de produits plats à partir d'un acier à plusieurs phases micro-allié en bore

Country Status (10)

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

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012100762A1 (fr) * 2011-01-26 2012-08-02 Salzgitter Flachstahl Gmbh Acier multiphasé à résistance mécanique très élevée présentant d'excellentes propriétés de déformation
EP2489748A1 (fr) * 2011-02-18 2012-08-22 ThyssenKrupp Steel Europe AG Produit plat en acier laminé à chaud fabriqué à partir d'un acier à phase complexe et son procédé de fabrication
AT512399B1 (de) * 2012-09-10 2013-08-15 Siemens Vai Metals Tech Gmbh Verfahren zum Herstellen eines mikrolegierten Röhrenstahls in einer Gieß-Walz-Verbundanlage und mikrolegierter Röhrenstahl
WO2013182622A1 (fr) * 2012-06-05 2013-12-12 Thyssenkrupp Steel Europe Ag Acier, produit en acier plat et procédé de fabrication d'un produit en acier plat
WO2015014333A3 (fr) * 2013-07-30 2015-11-05 Salzgitter Flachstahl Gmbh Acier multiphase à haute résistance, micro-allié et contenant du silicium, présentant une résistance minimale à la traction de 750 mpa et des propriétés améliorées et procédé de fabrication d'une bande à partir de cet acier
CN105950984A (zh) * 2016-05-06 2016-09-21 武汉钢铁股份有限公司 抗拉强度650MPa级热轧复相钢及其生产方法
EP3415646A1 (fr) * 2017-06-13 2018-12-19 ThyssenKrupp Steel Europe AG Tôle d'acier haute résistance à malléabilité améliorée

Families Citing this family (9)

* 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
US8435363B2 (en) 2007-10-10 2013-05-07 Nucor Corporation Complex metallographic structured high strength steel and manufacturing same
US20110277886A1 (en) 2010-02-20 2011-11-17 Nucor Corporation Nitriding of niobium steel and product made thereby
CN102766821B (zh) * 2012-07-31 2014-10-29 宝山钢铁股份有限公司 高强度大线能量焊接用厚钢板
JP5942712B2 (ja) * 2012-09-06 2016-06-29 新日鐵住金株式会社 スカム堰、薄肉鋳片の製造方法、薄肉鋳片の製造装置
EP2759614B1 (fr) 2013-01-25 2019-01-02 ThyssenKrupp Steel Europe AG Procédé destiné à générer un produit plat en acier avec une structure cristalline fine, partiellement amorphe ou amorphe et produit plat en acier conçu de la sorte
EP2924141B1 (fr) * 2014-03-25 2017-11-15 ThyssenKrupp Steel Europe AG Produit plat en acier laminé à froid et son procédé de fabrication
CN113481436A (zh) * 2021-06-29 2021-10-08 鞍钢股份有限公司 一种800MPa级热轧复相钢及其生产方法
CN113584270B (zh) * 2021-08-09 2023-03-24 新疆八一钢铁股份有限公司 一种提高桶业用钢加工性能的工艺

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19710125A1 (de) * 1997-03-13 1998-09-17 Krupp Ag Hoesch Krupp Verfahren zur Herstellung eines Bandstahles mit hoher Festigkeit und guter Umformbarkeit
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
WO2002048410A1 (fr) * 2000-12-16 2002-06-20 Thyssenkrupp Stahl Ag Procede de production de feuillards ou de toles a chaud en acier microallie
EP1319725A2 (fr) * 2001-12-13 2003-06-18 ThyssenKrupp Stahl AG Procédé pour la fabrication d'une bande à chaud
EP1396550A1 (fr) * 2002-08-28 2004-03-10 ThyssenKrupp Stahl AG Procédé pour la fabrication d' une bande à chaud
EP1493832A1 (fr) * 2000-02-23 2005-01-05 JFE Steel Corporation Feuille d'acier resistant a une traction elevee, laminee a chaud et dotee d'excellentes proprietes de resistance au durcissement, au vieillissement et a la deformation et procede de fabrication associe

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
TR199900053T2 (xx) * 1996-07-12 1999-03-22 Thyssen Stahl Aktiengesellschaft �elikten yap�lm�� s�cak �erit ve bu �eridin �retimi i�in bir i�lem.
FR2798871B1 (fr) * 1999-09-24 2001-11-02 Usinor Procede de fabrication de bandes d'acier au carbone, notamment d'acier pour emballages, et bandes ainsi produites
WO2001023632A1 (fr) * 1999-09-28 2001-04-05 Nkk Corporation Tole d'acier laminee a chaud et possedant une resistance elevee a la traction, et procede de production associe
AUPQ779900A0 (en) * 2000-05-26 2000-06-22 Bhp Steel (Jla) Pty Limited Hot rolling thin strip
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
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
JP4510488B2 (ja) * 2004-03-11 2010-07-21 新日本製鐵株式会社 成形性および穴拡げ性に優れた溶融亜鉛めっき複合高強度鋼板およびその製造方法
US20070144633A1 (en) * 2004-03-31 2007-06-28 Taro Kizu High-stiffness high-strength thin steel sheet and method for producing the same
CN100447280C (zh) * 2005-10-10 2008-12-31 燕山大学 冲压级低碳钢热轧薄板及其制造方法

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19710125A1 (de) * 1997-03-13 1998-09-17 Krupp Ag Hoesch Krupp Verfahren zur Herstellung eines Bandstahles mit hoher Festigkeit und guter Umformbarkeit
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
EP1493832A1 (fr) * 2000-02-23 2005-01-05 JFE Steel Corporation Feuille d'acier resistant a une traction elevee, laminee a chaud et dotee d'excellentes proprietes de resistance au durcissement, au vieillissement et a la deformation et procede de fabrication associe
WO2002048410A1 (fr) * 2000-12-16 2002-06-20 Thyssenkrupp Stahl Ag Procede de production de feuillards ou de toles a chaud en acier microallie
EP1319725A2 (fr) * 2001-12-13 2003-06-18 ThyssenKrupp Stahl AG Procédé pour la fabrication d'une bande à chaud
EP1396550A1 (fr) * 2002-08-28 2004-03-10 ThyssenKrupp Stahl AG Procédé pour la fabrication d' une bande à chaud

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 (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012100762A1 (fr) * 2011-01-26 2012-08-02 Salzgitter Flachstahl Gmbh Acier multiphasé à résistance mécanique très élevée présentant d'excellentes propriétés de déformation
EP2489748A1 (fr) * 2011-02-18 2012-08-22 ThyssenKrupp Steel Europe AG Produit plat en acier laminé à chaud fabriqué à partir d'un acier à phase complexe et son procédé de fabrication
WO2012110165A1 (fr) * 2011-02-18 2012-08-23 Thyssenkrupp Steel Europe Ag Produit plat en acier laminé à chaud fabriqué à partir d'un acier à phase complexe et procédé de fabrication correspondant
WO2013182622A1 (fr) * 2012-06-05 2013-12-12 Thyssenkrupp Steel Europe Ag Acier, produit en acier plat et procédé de fabrication d'un produit en acier plat
US9976205B2 (en) 2012-06-05 2018-05-22 Thyssenkrupp Steel Europe Ag Steel, sheet steel product and process for producing a sheet steel product
US9144839B2 (en) 2012-09-10 2015-09-29 Primetals Technologies Austria GmbH Method for producing microalloyed tubular steel in combined casting-rolling installation and microalloyed tubular steel
AT512399A4 (de) * 2012-09-10 2013-08-15 Siemens Vai Metals Tech Gmbh Verfahren zum Herstellen eines mikrolegierten Röhrenstahls in einer Gieß-Walz-Verbundanlage und mikrolegierter Röhrenstahl
AT512399B1 (de) * 2012-09-10 2013-08-15 Siemens Vai Metals Tech Gmbh Verfahren zum Herstellen eines mikrolegierten Röhrenstahls in einer Gieß-Walz-Verbundanlage und mikrolegierter Röhrenstahl
WO2015014333A3 (fr) * 2013-07-30 2015-11-05 Salzgitter Flachstahl Gmbh Acier multiphase à haute résistance, micro-allié et contenant du silicium, présentant une résistance minimale à la traction de 750 mpa et des propriétés améliorées et procédé de fabrication d'une bande à partir de cet acier
US10612113B2 (en) 2013-07-30 2020-04-07 Salzgitter Flachstahl Gmbh Micro-alloyed high-strength multi-phase steel containing silicon and having a minimum tensile strength of 750 MPA and improved properties and method for producing a strip from said steel
CN105950984A (zh) * 2016-05-06 2016-09-21 武汉钢铁股份有限公司 抗拉强度650MPa级热轧复相钢及其生产方法
CN105950984B (zh) * 2016-05-06 2018-03-27 武汉钢铁有限公司 抗拉强度650MPa级热轧复相钢及其生产方法
EP3415646A1 (fr) * 2017-06-13 2018-12-19 ThyssenKrupp Steel Europe AG Tôle d'acier haute résistance à malléabilité améliorée

Also Published As

Publication number Publication date
ATE432376T1 (de) 2009-06-15
DE502006003835D1 (de) 2009-07-09
CN101528970A (zh) 2009-09-09
CN101528970B (zh) 2012-10-03
KR101461583B1 (ko) 2014-11-13
KR20090084815A (ko) 2009-08-05
US20100043513A1 (en) 2010-02-25
PL1918406T3 (pl) 2009-10-30
JP5350253B2 (ja) 2013-11-27
WO2008052919A1 (fr) 2008-05-08
ES2325962T3 (es) 2009-09-25
JP2010508435A (ja) 2010-03-18
EP1918406B1 (fr) 2009-05-27

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
EP1309734B1 (fr) Acier et feuillard ou tole d'acier a resistance tres elevee, pouvant etre forme a froid, procede pour produire un feuillard d'acier et utilisations d'un tel acier
WO2012095232A1 (fr) Procédé de fabrication d'un produit en acier plat laminé a chaud
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'
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
EP2340897A1 (fr) Procédé de traitement thermomécanique pour tôles épaisses
DE3825634A1 (de) Verfahren zur erzeugung von warmbad oder grobblechen
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
EP2767602B1 (fr) Produit plat en acier laminé à froid pour applications d'emboutissage profond et son procédé de fabrication
DE102014005662A1 (de) Werkstoffkonzept für einen umformbaren Leichtbaustahl
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
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
EP1453984B1 (fr) Procede de production de feuillards ou de toles a chaud en acier microallie
EP1396549A1 (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
WO2023016965A1 (fr) Procédé et dispositif pour produire un acier multiphase à haute et ultra-haute limite d'élasticité

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: 502006003835

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: 2325962

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: 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

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

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: 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: 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: 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: 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: 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: 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: 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

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

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

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

Ref country code: GB

Payment date: 20141016

Year of fee payment: 9

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

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

Ref country code: AT

Payment date: 20141020

Year of fee payment: 9

Ref country code: NL

Payment date: 20141016

Year of fee payment: 9

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

Ref country code: IT

Payment date: 20141017

Year of fee payment: 9

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

Ref country code: BE

Payment date: 20141031

Year of fee payment: 9

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: AT

Ref legal event code: MM01

Ref document number: 432376

Country of ref document: AT

Kind code of ref document: T

Effective date: 20151030

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

Effective date: 20151030

REG Reference to a national code

Ref country code: NL

Ref legal event code: MM

Effective date: 20151101

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

Ref country code: GB

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

Effective date: 20151030

Ref country code: IT

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

Effective date: 20151030

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: 20151101

Ref country code: AT

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

Effective date: 20151030

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 11

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

Ref country code: BE

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

Effective date: 20151031

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: DE

Payment date: 20201019

Year of fee payment: 15

Ref country code: FR

Payment date: 20201019

Year of fee payment: 15

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 502006003835

Country of ref document: DE

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

Ref country code: DE

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

Effective date: 20220503

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