EP1918405B1 - Verfahren zum Herstellen von Stahl-Flachprodukten aus einem mit Silizium legierten Mehrphasenstahl - Google Patents

Verfahren zum Herstellen von Stahl-Flachprodukten aus einem mit Silizium legierten Mehrphasenstahl Download PDF

Info

Publication number
EP1918405B1
EP1918405B1 EP06123141A EP06123141A EP1918405B1 EP 1918405 B1 EP1918405 B1 EP 1918405B1 EP 06123141 A EP06123141 A EP 06123141A EP 06123141 A EP06123141 A EP 06123141A EP 1918405 B1 EP1918405 B1 EP 1918405B1
Authority
EP
European Patent Office
Prior art keywords
hot
rolled strip
strip
cold
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.)
Not-in-force
Application number
EP06123141A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1918405A1 (de
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 AT06123141T priority Critical patent/ATE432375T1/de
Application filed by ThyssenKrupp Steel AG filed Critical ThyssenKrupp Steel AG
Priority to EP06123141A priority patent/EP1918405B1/de
Priority to ES06123141T priority patent/ES2325964T3/es
Priority to PL06123141T priority patent/PL1918405T3/pl
Priority to DE502006003833T priority patent/DE502006003833D1/de
Priority to JP2009533824A priority patent/JP5350255B2/ja
Priority to KR1020097007487A priority patent/KR101461585B1/ko
Priority to CN2007800400604A priority patent/CN101528968B/zh
Priority to US12/447,625 priority patent/US20100065161A1/en
Priority to PCT/EP2007/061392 priority patent/WO2008052921A1/de
Publication of EP1918405A1 publication Critical patent/EP1918405A1/de
Application granted granted Critical
Publication of EP1918405B1 publication Critical patent/EP1918405B1/de
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
    • C21D8/0421—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
    • C22C38/02—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
    • C22C38/12—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
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/22—Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten
    • 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
    • C22C38/26—Ferrous alloys, e.g. steel alloys containing chromium with niobium or tantalum
    • 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
    • C21D2211/005—Ferrite
    • 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 flat steel products, such as strips or sheet metal blanks, from high-strength martensitic steels.
  • Such MS 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-rolled strip is left to rest for a period of time required to allow bainitic transformation of the steel with a residual austenite content greater than 5%.
  • the Perlite formation should be avoided.
  • the conversion process is stopped by the beginning of the second stage of cooling, in which the hot strip is brought to a temperature below 400 ° C, then at a lying below 350 ° C reel to a Wind coil.
  • 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 according to AI for producing steel flat products, in which a multi-phase structure forming steel, the (in wt .-%) 0.10 - 0.15% C , 0.80 - 1.20% Mn, up to 0.030% P, up to 0.004% S, 1.10 - 1.30% Si, 0.0 - 0.05% Al, up to 0.0060% N , 0.30-0.60% Cr, 0.080-0.120% Ti, 0.040-0.060% Nb, 0.150-0.250% Mo and balance iron and unavoidable impurities, to one cast strip with a thickness of 1 - 4 mm, in which the cast strip in a continuous operation with a degree of deformation of more than 20% in-line lying in the range of 850 - 1000 ° C hot rolling to a hot strip with a Hot rolled at a coil temperature of 450-700 ° C to obtain a hot strip whose tensile strength R m is at least 880 MP
  • the invention makes use of the possibility of strip casting to process a particularly high-strength, 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 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 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 880 MPa, without having to observe a special cooling cycle of the hot strip between the end of the hot rolling and the reeling, as described 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 5%.
  • elongation at break values for which a tensile strength of at least 800 MPa can still be guaranteed, can be reliably produced by limiting the annealing temperatures to a range of 810-850 ° C.
  • the cold strip is provided in a conventional manner 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. If, for example, hot strips are to be produced which have a tensile strength R m of at least 880 MPa at an elongation at break A 80 of the resulting hot strip of at least 10%, this can be achieved by setting the hot rolling end temperature in the range from 850 to 1000 ° C. and the coiler temperature be varied in the range of 550 - 700 ° C.
  • the hot rolling end temperature in the range of 900-1000 ° C and the coiling temperature in the range of 450-550 ° C selected.
  • the cast strip was hot-rolled immediately after in-line strip casting at a hot rolling end temperature WET to a hot strip whose thickness was 1.25 mm. Subsequently, each hot strip obtained has been cooled directly in a cooling step to a coiler temperature HT and coiled. After coiling, the hot rolled strip obtained 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 observed in its manufacture, are given in Table 2.
  • Table 2 WET [° C] HT [° C] R m [MPa]
  • the hot strip produced in this way has been cold rolled to a 0.7 mm thick cold strip after unreeling and pickling.
  • Such a cold strip A was annealed at a temperature of 840 ° C to recrystallize the strip.
  • Another cold strip B was recrystallized annealed at a temperature of 800 ° C. This cold-rolled strip B had an elongation at break A 50 of 8.6% and a tensile strength R m of 1003 Mpa.

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)
  • Coating With Molten Metal (AREA)
  • Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
  • Chemical Vapour Deposition (AREA)
EP06123141A 2006-10-30 2006-10-30 Verfahren zum Herstellen von Stahl-Flachprodukten aus einem mit Silizium legierten Mehrphasenstahl Not-in-force EP1918405B1 (de)

Priority Applications (10)

Application Number Priority Date Filing Date Title
EP06123141A EP1918405B1 (de) 2006-10-30 2006-10-30 Verfahren zum Herstellen von Stahl-Flachprodukten aus einem mit Silizium legierten Mehrphasenstahl
ES06123141T ES2325964T3 (es) 2006-10-30 2006-10-30 Procedimiento para fabricar productos planos de acero a partir de un acero multifasico aleado con silicio.
PL06123141T PL1918405T3 (pl) 2006-10-30 2006-10-30 Sposób wytwarzania płaskich produktów stalowych z wielofazowej stali stopowej z krzemem
DE502006003833T DE502006003833D1 (de) 2006-10-30 2006-10-30 Verfahren zum Herstellen von Stahl-Flachprodukten aus einem mit Silizium legierten Mehrphasenstahl
AT06123141T ATE432375T1 (de) 2006-10-30 2006-10-30 Verfahren zum herstellen von stahl-flachprodukten aus einem mit silizium legierten mehrphasenstahl
KR1020097007487A KR101461585B1 (ko) 2006-10-30 2007-10-24 실리콘으로 합금화된 다상 강으로부터 평판형 강 제품을 제조하는 방법
JP2009533824A JP5350255B2 (ja) 2006-10-30 2007-10-24 ケイ素合金化多相鋼からフラット鋼生成物を製造する方法
CN2007800400604A CN101528968B (zh) 2006-10-30 2007-10-24 由硅合金化多相钢制造扁钢产品的方法
US12/447,625 US20100065161A1 (en) 2006-10-30 2007-10-24 Method for manufacturing flat steel products from silicon alloyed multi-phase steel
PCT/EP2007/061392 WO2008052921A1 (de) 2006-10-30 2007-10-24 Verfahren zum herstellen von stahl-flachprodukten aus einem mit silizium legierten mehrphasenstahl

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP06123141A EP1918405B1 (de) 2006-10-30 2006-10-30 Verfahren zum Herstellen von Stahl-Flachprodukten aus einem mit Silizium legierten Mehrphasenstahl

Publications (2)

Publication Number Publication Date
EP1918405A1 EP1918405A1 (de) 2008-05-07
EP1918405B1 true EP1918405B1 (de) 2009-05-27

Family

ID=37781961

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06123141A Not-in-force EP1918405B1 (de) 2006-10-30 2006-10-30 Verfahren zum Herstellen von Stahl-Flachprodukten aus einem mit Silizium legierten Mehrphasenstahl

Country Status (10)

Country Link
US (1) US20100065161A1 (pt)
EP (1) EP1918405B1 (pt)
JP (1) JP5350255B2 (pt)
KR (1) KR101461585B1 (pt)
CN (1) CN101528968B (pt)
AT (1) ATE432375T1 (pt)
DE (1) DE502006003833D1 (pt)
ES (1) ES2325964T3 (pt)
PL (1) PL1918405T3 (pt)
WO (1) WO2008052921A1 (pt)

Families Citing this family (7)

* 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
EP2439290B1 (de) 2010-10-05 2013-11-27 ThyssenKrupp Steel Europe AG Mehrphasenstahl, aus einem solchen Mehrphasenstahl hergestelltes kaltgewalztes Flachprodukt und Verfahren zu dessen Herstellung
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
WO2016100839A1 (en) 2014-12-19 2016-06-23 Nucor Corporation Hot rolled light-gauge martensitic steel sheet and method for making the same
IT201700010994A1 (it) * 2017-02-01 2018-08-01 Nova Ferr S R L Lama di taglio per un tagliaerba.

Family Cites Families (17)

* 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.
DE19710125A1 (de) * 1997-03-13 1998-09-17 Krupp Ag Hoesch Krupp Verfahren zur Herstellung eines Bandstahles mit hoher Festigkeit und guter Umformbarkeit
TW426742B (en) * 1997-03-17 2001-03-21 Nippon Steel Corp Dual-phase type high strength steel sheets having high impact energy absorption properties and a method of producing the same
FR2796966B1 (fr) * 1999-07-30 2001-09-21 Ugine Sa Procede de fabrication de bandes minces en acier de type "trip" et bandes minces ainsi obtenues
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
AUPQ779900A0 (en) * 2000-05-26 2000-06-22 Bhp Steel (Jla) Pty Limited Hot rolling thin strip
EP1327697A4 (en) * 2000-10-19 2009-11-11 Jfe Steel Corp ZINC PLATED STEEL SHEET AND METHOD FOR PREPARING SAME, AND METHOD FOR MANUFACTURING AN ARTICLE FORMED BY PRESS MACHINING
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
EP1396550A1 (de) * 2002-08-28 2004-03-10 ThyssenKrupp Stahl AG Verfahren zum Herstellen eines Warmbandes
EP1398390B1 (de) * 2002-09-11 2006-01-18 ThyssenKrupp Steel AG Ferritisch/martensitischer Stahl mit hoher Festigkeit und sehr feinem Gefüge
JP4299560B2 (ja) * 2003-03-20 2009-07-22 日新製鋼株式会社 加工性に優れた高強度合金化溶融亜鉛めっき鋼板の製造方法
JP4317384B2 (ja) * 2003-04-28 2009-08-19 新日本製鐵株式会社 耐水素脆化、溶接性および穴拡げ性に優れた高強度亜鉛めっき鋼板とその製造方法
FR2855184B1 (fr) * 2003-05-19 2006-05-19 Usinor Tole laminee a froid et aluminiee en acier dual phase a tres haute resistance pour ceinture anti-implosion de televiseur, et procede de fabrication de cette tole
US20070144633A1 (en) * 2004-03-31 2007-06-28 Taro Kizu High-stiffness high-strength thin steel sheet and method for producing the same

Also Published As

Publication number Publication date
WO2008052921A1 (de) 2008-05-08
JP2010508437A (ja) 2010-03-18
US20100065161A1 (en) 2010-03-18
DE502006003833D1 (de) 2009-07-09
KR20090090303A (ko) 2009-08-25
CN101528968A (zh) 2009-09-09
JP5350255B2 (ja) 2013-11-27
ATE432375T1 (de) 2009-06-15
ES2325964T3 (es) 2009-09-25
EP1918405A1 (de) 2008-05-07
PL1918405T3 (pl) 2009-10-30
KR101461585B1 (ko) 2015-02-23
CN101528968B (zh) 2013-03-06

Similar Documents

Publication Publication Date Title
EP1918406B1 (de) Verfahren zum Herstellen von Stahl-Flachprodukten aus einem mit Bor mikrolegierten Mehrphasenstahl
EP1918402B1 (de) Verfahren zum Herstellen von Stahl-Flachprodukten aus einem ein Komplexphasen-Gefüge bildenden Stahl
EP1918403B1 (de) Verfahren zum Herstellen von Stahl-Flachprodukten aus einem ein martensitisches Gefüge bildenden Stahl
EP2690183B1 (de) Warmgewalztes Stahlflachprodukt und Verfahren zu seiner Herstellung
EP1573075B1 (de) Verfahren zum herstellen eines stahlprodukts
EP1309734B1 (de) Höherfester, kaltumformbarer stahl und stahlband oder -blech, verfahren zur herstellung von stahlband und verwendungen eines solchen stahls
WO2006048034A1 (de) Höherfestes, twip-eigenschaften aufweisendes stahlband oder -blech und verfahren zu dessen herstellung mittels “direct strip casting '
EP2767601B1 (de) Kaltgewalztes Stahlflachprodukt für Tiefziehanwendungen und Verfahren zu seiner Herstellung
EP2840159B1 (de) Verfahren zum Herstellen eines Stahlbauteils
EP1918405B1 (de) Verfahren zum Herstellen von Stahl-Flachprodukten aus einem mit Silizium legierten Mehrphasenstahl
EP0352597A1 (de) Verfahren zur Erzeugung von Warmband oder Grobblechen
WO2015117934A1 (de) Hochfestes stahlflachprodukt mit bainitisch-martensitischem gefüge und verfahren zur herstellung eines solchen stahlflachprodukts
EP2690184A1 (de) Kaltgewalztes Stahlflachprodukt und Verfahren zu seiner Herstellung
EP2767602B1 (de) Kaltgewalztes Stahlflachprodukt für Tiefziehanwendungen und Verfahren zu seiner Herstellung
EP1399598B2 (de) Verfahren zum herstellen von hochfesten, aus einem warmband kaltverformten stahlprodukten mit guter dehnbarkeit
EP1398390B1 (de) Ferritisch/martensitischer Stahl mit hoher Festigkeit und sehr feinem Gefüge
DE102014005662A1 (de) Werkstoffkonzept für einen umformbaren Leichtbaustahl
EP1918404B1 (de) Verfahren zum Herstellen von Stahl-Flachprodukten aus einem mit Aluminium legierten Mehrphasenstahl
EP1453984B1 (de) Verfahren zum herstellen von warmband oder -blech aus einem mikrolegierten stahl
EP1411140B1 (de) Verfahren zum Herstellen eines besonders gut verformbaren kaltgewalzten Stahlbands oder -blechs
DE2636553B2 (de) Alterungsbeständiger Tiefziehstahl mit sehr niedriger Streckgrenzenfestigkeit und Verfahren zu seiner Herstellung

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: 502006003833

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: 2325964

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: 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: 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

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

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: 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

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: 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

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: 432375

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: IT

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

Effective date: 20151030

Ref country code: GB

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: AT

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

Effective date: 20151030

Ref country code: NL

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

Effective date: 20151101

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: FR

Payment date: 20201019

Year of fee payment: 15

Ref country code: DE

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: 502006003833

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