EP1961832B1 - Utilisation d'un alliage d'acier en tant que matière première pour la fabrication de composants de tuyaux chargés dynamiquement et composant de tuyau - Google Patents

Utilisation d'un alliage d'acier en tant que matière première pour la fabrication de composants de tuyaux chargés dynamiquement et composant de tuyau Download PDF

Info

Publication number
EP1961832B1
EP1961832B1 EP08002285A EP08002285A EP1961832B1 EP 1961832 B1 EP1961832 B1 EP 1961832B1 EP 08002285 A EP08002285 A EP 08002285A EP 08002285 A EP08002285 A EP 08002285A EP 1961832 B1 EP1961832 B1 EP 1961832B1
Authority
EP
European Patent Office
Prior art keywords
maximum
tube component
mpa
steel alloy
tube
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
EP08002285A
Other languages
German (de)
English (en)
Other versions
EP1961832A1 (fr
Inventor
Uwe Dr. Diekmann
Michael Dr. Gramlich
Dirk Tegethoff
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.)
Benteler Deustchland GmbH
Original Assignee
Benteler Deustchland GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Benteler Deustchland GmbH filed Critical Benteler Deustchland GmbH
Publication of EP1961832A1 publication Critical patent/EP1961832A1/fr
Application granted granted Critical
Publication of EP1961832B1 publication Critical patent/EP1961832B1/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
    • C21D8/10—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of tubular bodies
    • C21D8/105—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of tubular bodies of ferrous alloys
    • 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
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/002—Heat treatment of ferrous alloys containing Cr
    • 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
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/08—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes
    • 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
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/24—Ferrous alloys, e.g. steel alloys containing chromium with vanadium
    • 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
    • C22C38/34—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of silicon
    • 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
    • C21D2211/004—Dispersions; Precipitations
    • 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
    • C21D2211/009—Pearlite

Definitions

  • the invention relates to the use of a steel alloy as a material for the production of dynamically loaded pipe components and such a pipe component.
  • stabilizers which are used to reduce the tendency of the body to curve and to influence the self-steering behavior. They stiffen the suspension in one-sided load, since the resistance of the material of the stabilizer of the side slope resiliently counteracts.
  • Another example would be a torsionally loaded shaft.
  • Stabilizers are to be assigned with regard to the type of stress straight torsion springs or torsion bars, since a stabilizer is twisted at different compression of the wheels about its longitudinal axis. From the EP 0 753 595 B1 it is known to produce stabilizers from pipes. This is what you do it a tube more favorable ratio of the moment of resistance against torsion to the tube mass compared to a solid rod advantage. In the optimum for the torsion ratio of wall thickness to diameter of the pipes, the materials used would have to maintain a higher by approximately a factor of 1.4 yield strength and tensile strength as materials of solid rods while maintaining the design in the vehicles structurally predetermined or usable outer diameter.
  • Another essential factor for achieving a high permanent fatigue strength is the surface quality of the outer and inner surface of the tubes used.
  • the best surface qualities have longitudinally welded and possibly subsequently cold drawn tubes made of rolled steel strip. In this case, the errors occurring in seamless drawn pipes, such as pleats, etc., avoided.
  • this tensile strength is insufficient to compete with stabilizers of a higher strength solid material.
  • Even the steel 34MnB5 steel used to date for tubes for the manufacture of stabilizers only achieves tensile strengths of up to 1,800 MPa, but with a relatively low fatigue strength.
  • the state of the art also includes the EP 1 698 712 , which discloses a steel material for highly loaded springs, having the following composition: C 0.35 - 0.65%, Si 1.4 - 2.5%, Mn 0.1 - 1.0%, Cr> 2.0% , Ni> 1.0%, Cu> 1.0%, P> 0.020%, S> 0.020%, N> 0.006%, Al> 0.1% and balance iron. Although this steel also achieves strengths up to about 2,100 MPa. High Ti and Al contents involve the risk of reduced fatigue strength, which can be attributed to the formation of hard phases.
  • Titanium contents in the range greater than 0.01% lead to the primary precipitation of hard titanium nitrides, which produce internal notches in the material and have a negative influence on the fatigue strength of high-strength spring steels.
  • Aluminum contents greater than 0.01% also lead to the formation of Aluminum oxides and aluminum nitrides having the above-described negative fatigue properties.
  • this steel material is less suitable for the tube making process, ie, drawdown reduction, and is expensive in view of the relatively high nickel content.
  • a copper content of more than 0.2% leads to grain boundary failure during hot forming, especially if, as in the case of pipe production, there are existing high stresses in hot working.
  • the surface quality plays an important role.
  • the improvement in surface quality can be achieved with seamless pipes by internal peeling, i. be achieved by a machining, but which is associated with high costs and thus has a low cost.
  • the state of the art is still the EP 1 029 720 A2 to call.
  • This relates to a method for producing a hollow stabilizer, which can be used in a vehicle, for example in a car.
  • the manufacturing method described therein includes a manufacturing step of subjecting a seam-welded pipe to continuous hot working to obtain a primary pipe, and winding the primary pipe in a band ring. This is followed by a cold drawing step to obtain a pipe with a wall thickness ratio of 0.2 to 0.27 and a tensile strength of 800 to 1,000 MPa.
  • a bending step the thick-walled pipe obtained by the cold-drawing step is bent in a cold state into the desired stabilizer shape. It is desirable that the carbon content of the seam-welded pipe is between 0.17 and 0.4% by weight.
  • the state of the art also includes the EP 1 698 712 A1 relating to a steel for a high strength spring, which contains 0.35% to 0.65% carbon, 1.4% to 2.5% silicon, 0.1% to 1.0% manganese, up to 2.0% chromium up to 1.0% nickel, up to 1.0% copper, up to 0.02% phosphorus, up to 0.02% sulfur, up to 0.006% nitrogen and up to 0.1% aluminum, balance iron and contains unavoidable impurities.
  • This steel has a good cold workability.
  • the invention is based on the object to show the use of a steel alloy as a material for the production of dynamically loaded pipe components, the material meets the high requirements for the production of dynamically loaded tubular components, in particular for the production of straight or tortuous torsion springs, such.
  • Coil springs, or hollow shafts is suitable and also reached the strength level of spring steels.
  • the tensile strength of the pipe component produced from this material is in the tempered state in a range greater than 1,800 MPa, wherein the yield strength Rp02 is in a range greater than 1,600 MPa.
  • This material is ideal for the production of stabilizers, drive shafts, torsion bars and coil springs, ie generally for straight or tortuous torsion springs and hollow shafts that are dynamically stressed. These favorable material properties have led to a variation of the chemical compositions by lowering the carbon content and an optimization of the Cr-Si-Mn balance and the use of a microalloying concept (Nb, V, B).
  • the material can withstand very high cooling rates and can therefore be quenched with quenching rates of greater than 200 K / s without causing any crazing or significant distortion.
  • Conventional spring steels are hardened in oil at much slower cooling rates ( ⁇ 100 K / s).
  • the steel material is still weldable even if the carbon content is greater than 0.35%, so that as a production method for dynamically loaded Pipe components a) both welding and drawing, b) direct welding, and c) are suitable for seamless production.
  • the good weldability is achieved by a comparatively high ductility in the weld area, so that a reduced tendency for brittle failure of the weld during cooling and when calibrating the tubes is present.
  • This can be attributed to the finest lamellae made of retained austenite in the hardened structure. In the transmission electron microscope, these lamellae become visible in the nanometer range. These fins increase the ductility of the hardness structure without lowering the yield strength and strength.
  • the lamellae have a mean particle size of 60-70 nm.
  • a seamless production is particularly suitable in combination with an optimized internal machining, if the wall thickness s in a range greater than 18% of the outer diameter D is (s / D> 18%).
  • the material according to the invention is therefore suitable for all tube production methods mentioned above, is also inexpensive to produce and has the potential due to high achievable strength values, for torsionally loaded components, e.g. Torsion springs to replace solid materials.
  • the pipe component produced has an elongation A5 greater than 9%. It is also noteworthy that even at a very low tempering temperature of 250 C, a fracture constriction Z of greater than 30% is achieved, so that a high yield strength is maintained.
  • the quenching takes place by preferably inductive heating to Austenitmaschinestemperatur from 900 to 950 ° C, followed by quenching in water or oil (preferably water at a cooling rate> 200 K / s, in particular> 400 K / s) and then tempering to a temperature of 200 300 ° C, preferably ⁇ 275 ° C, in particular to a temperature of 250 ° C.
  • water or oil preferably water at a cooling rate> 200 K / s, in particular> 400 K / s
  • dynamic loadable pipe components in diameter ranges from 3mm to 150 mm, in particular in Make diameter ranges from 8 mm to 50 mm.
  • the wall thickness is preferably 10% to 22% of the outer diameter of the pipe component in such dynamically loaded pipe components.
  • the production of the pipe components is preferably carried out in soft annealed, pearlitic state.
  • the steel alloy no. 1 is the material as it is to be used in the pipe components according to the invention.
  • the comparison material no. 2 corresponds to the alloy 34MnB5.
  • the comparison material no. 3 corresponds to the alloy 25MnB5.
  • the comparison material no. 4 corresponds to the alloy 42CrMo4.

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)
  • Manufacturing & Machinery (AREA)
  • Heat Treatment Of Articles (AREA)
  • Heat Treatment Of Steel (AREA)

Claims (13)

  1. Utilisation d'un alliage d'acier en tant que matériau pour la réalisation d'éléments tubulaires soumis à des sollicitations dynamiques, lequel contient en pourcentages en poids du carbone 0,40 - 0,44 silicium 1,5 - 2,2 manganèse 0,3 - 0,8 chrome 1,1 - 1,5 azote 0,004 - 0,015 niobium 0,02 - 0,04 vanadium 0,01 - 0,015 bore 0,002 - 0,004
    du fer et des impuretés usuelles pour le reste, sachant que parmi les impuretés usuelles figurent 0,015 % maximum de phosphore, 0,01 % maximum de soufre, 0,2 % maximum de nickel, 0,1 % maximum de cuivre, 0,02 % maximum d'étain, 0,015 % maximum d'aluminium, 0,01 % maximum de titane, 0,08 % maximum de molybdène, et sachant que la résistance à la traction Rm de l'élément tubulaire à l'état trempé et revenu est supérieure à 1 800 MPa et la limite d'élasticité Rp0,2 est supérieure à 1 600 MPa.
  2. Utilisation d'un alliage d'acier selon la revendication 1, caractérisée en ce que l'élément tubulaire à l'état trempé et revenu a une résistance à la traction Rm supérieure à 2 000 MPa et une limite d'élasticité Rp0,2 supérieure à 1 900 MPa.
  3. Utilisation d'un alliage d'acier selon la revendication 1, caractérisée en ce que l'élément tubulaire à l'état trempé et revenu a une résistance à la traction Rm supérieure à 2 100 MPa et une limite d'élasticité Rp0,2 supérieure à 2 000 MPa.
  4. Utilisation d'un alliage d'acier selon l'une quelconque des revendications 1 à 3, caractérisée en ce que l'allongement A5 de l'élément tubulaire à l'état trempé et revenu est supérieur à 9 %.
  5. Élément tubulaire réalisé à partir d'un alliage d'acier qui contient en pourcentages en poids du carbone 0,40 - 0,44, du silicium 1,5 - 2,2, du manganèse 0,3 - 0,8, du chrome 1,1 - 1,5, de l'azote 0,004 - 0,015, du niobium 0,02 - 0,04, du vanadium 0,01 - 0,015, du bore 0,002 - 0,004, du fer et des impuretés usuelles pour le reste, sachant que parmi les impuretés usuelles figurent 0,015 % maximum de phosphore, 0,01 % maximum de soufre, 0,2 % maximum de nickel, 0,1 % maximum de cuivre, 0,02 % maximum d'étain, 0,015 % maximum d'aluminium, 0,01 % maximum de titane, 0,08 % maximum de molybdène, et sachant que la résistance à la traction Rm de l'élément tubulaire à l'état trempé et revenu est supérieure à 1 800 MPa et la limite d'élasticité Rp0,2 est supérieure à 1 600 MPa, caractérisé en ce qu'il subit une trempe à l'eau avec une vitesse de trempe supérieure à 200 Kelvin/seconde et est revenu ensuite à une température de 200 à 300°C.
  6. Élément tubulaire réalisé à partir d'un alliage d'acier selon l'une quelconque des revendications 1 à 4, caractérisé en ce qu'en présence d'une température de revenu de 250°C, la striction Z est supérieure à 30 %.
  7. Élément tubulaire réalisé à partir d'un alliage d'acier selon l'une quelconque des revendications 1 à 4, caractérisé en ce que son diamètre extérieur se situe dans une plage de 3 mm à 150 mm.
  8. Élément tubulaire selon la revendication 7, caractérisé en ce que le diamètre extérieur se situe dans une plage de 8 mm à 50 mm.
  9. Élément tubulaire selon la revendication 7 ou 8, caractérisé en ce que son épaisseur de paroi se situe entre 10 % et 25 % de son diamètre extérieur.
  10. Élément tubulaire réalisé à partir d'un alliage d'acier selon l'une quelconque des revendications 1 à 4, caractérisé en ce qu'il s'agit d'un élément de construction transmettant un couple de rotation ou sollicité en torsion.
  11. Élément tubulaire selon la revendication 10, caractérisé en ce qu'il s'agit d'une barre de torsion droite ou en spirale ou d'un arbre creux.
  12. Élément tubulaire selon l'une quelconque des revendications 5 à 11, caractérisé en ce que la décarburation superficielle est de l'ordre de 50 µm maximum.
  13. Élément tubulaire selon l'une quelconque des revendications 5 à 12, caractérisé en ce que la profondeur de défaut est de l'ordre de 50 µm maximum.
EP08002285A 2007-02-07 2008-02-07 Utilisation d'un alliage d'acier en tant que matière première pour la fabrication de composants de tuyaux chargés dynamiquement et composant de tuyau Not-in-force EP1961832B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102007006875A DE102007006875A1 (de) 2007-02-07 2007-02-07 Verwendung einer Stahllegierung als Werkstoff zur Herstellung von dynamisch belasteten Rohrbauteilen und Rohrbauteil

Publications (2)

Publication Number Publication Date
EP1961832A1 EP1961832A1 (fr) 2008-08-27
EP1961832B1 true EP1961832B1 (fr) 2011-11-30

Family

ID=39204871

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08002285A Not-in-force EP1961832B1 (fr) 2007-02-07 2008-02-07 Utilisation d'un alliage d'acier en tant que matière première pour la fabrication de composants de tuyaux chargés dynamiquement et composant de tuyau

Country Status (3)

Country Link
EP (1) EP1961832B1 (fr)
AT (1) ATE535625T1 (fr)
DE (1) DE102007006875A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012111679A1 (de) * 2012-01-19 2013-07-25 Gesenkschmiede Schneider Gmbh Niedrig legierter Stahl und damit hergestellte Bauteile
CN108474080B (zh) * 2015-11-16 2021-09-21 本特勒尔钢管有限公司 具有高能量吸收能力的钢合金和钢管产品
DE102016108836B4 (de) 2016-05-12 2018-05-24 Benteler Automobiltechnik Gmbh Kraftfahrzeugbauteil sowie Verfahren zu dessen Herstellung

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2424324B1 (fr) * 1978-04-28 1986-02-28 Neturen Co Ltd Acier pour faconnage plastique a froid et traitement thermique favorisant cette deformation
US4533402A (en) * 1984-02-16 1985-08-06 Nhk Spring Co., Ltd. Method of manufacturing a hollow stabilizer
US5236520A (en) * 1990-10-24 1993-08-17 Consolidated Metal Products, Inc. High strength steel sway bars and method of making
DE4321241A1 (de) * 1993-06-25 1995-01-05 Hesonwerk Dr Iske Gmbh Verwendung von Stahlrohren oder Stahlstäben zur Herstellung von Fahrwerksstabilisatoren für Kraftfahrzeuge
DE4440729C2 (de) * 1994-11-15 1999-07-29 Datec Scherdel Gmbh Relaxationsfeste Stahlfeder
DE59607441D1 (de) 1995-07-06 2001-09-13 Benteler Werke Ag Rohre für die Herstellung von Stabilisatoren und Herstellung von Stabilisatoren aus solchen Rohren
EP1018565A4 (fr) * 1998-06-23 2003-07-23 Sumitomo Metal Ind Tige en fil d'acier et procede de fabrication de l'acier destine a ce fil
JP4331300B2 (ja) 1999-02-15 2009-09-16 日本発條株式会社 中空スタビライザの製造方法
US6447622B1 (en) * 1999-06-16 2002-09-10 Nippon Steel Corporation High carbon steel wire excellent in wire-drawability and in fatigue resistance after wire drawing
BR0006880A (pt) * 1999-06-16 2001-08-07 Nippon Steel Corp Aço superlimpo
JP2001355047A (ja) * 2000-06-14 2001-12-25 Kawasaki Steel Corp 冷間加工性と高周波焼入れ性に優れた高炭素鋼管およびその製造方法
US7789974B2 (en) * 2000-12-20 2010-09-07 Nippon Steel Corporation High-strength spring steel wire
JP4044460B2 (ja) * 2003-02-28 2008-02-06 大同特殊鋼株式会社 冷間成形ばね用鋼
DE102004053620A1 (de) * 2004-11-03 2006-05-04 Salzgitter Flachstahl Gmbh Hochfester, lufthärtender Stahl mit ausgezeichneten Umformeigenschaften
JP4476846B2 (ja) 2005-03-03 2010-06-09 株式会社神戸製鋼所 冷間加工性と品質安定性に優れた高強度ばね用鋼

Also Published As

Publication number Publication date
DE102007006875A1 (de) 2008-08-14
EP1961832A1 (fr) 2008-08-27
ATE535625T1 (de) 2011-12-15

Similar Documents

Publication Publication Date Title
DE112010003614B4 (de) Hochfeste Schraube
DE60224262T2 (de) Elektrogeschweisstes stahlrohr für hohlstabilisator
EP0753595B1 (fr) Tuyaux pour la fabrication de stabilisateurs et fabrication de stabilisateurs à partir desdits tuyaux
DE102005052069B4 (de) Verfahren zum Herstellen von Vormaterial aus Stahl durch Warmverformen
DE102015112889A1 (de) Hochfester manganhaltiger Stahl, Verwendung des Stahls für flexibel gewalzte Stahlflachprodukte und Herstellverfahren nebst Stahlflachprodukt hierzu
DE60300561T3 (de) Verfahren zur Herstellung eines warmgewalzten Stahlbandes
EP1546426B1 (fr) Composition d'acier et pieces matricees fabriquees a partir de cette composition
EP2111475B1 (fr) Composants en acier à ultra haute teneur en carbone, de densité réduite et à haute résistance à la calamine
EP1961832B1 (fr) Utilisation d'un alliage d'acier en tant que matière première pour la fabrication de composants de tuyaux chargés dynamiquement et composant de tuyau
DE102016117508B4 (de) Verfahren zur Herstellung eines Stahlflachprodukts aus einem mittelmanganhaltigen Stahl und ein derartiges Stahlflachprodukt
EP2662461A1 (fr) Alliage fer-chrome-manganèse-nickel
WO2008074313A2 (fr) Tourillon sphérique et calotte sphérique en acier inoxydable
DE112008001181B4 (de) Verwendung einer Stahllegierung für Achsrohre sowie Achsrohr
EP2414552B1 (fr) Pivots à rotule en aciers à structure bainitique pour de véhicules à usage personnel et de véhicules utilitaires légers
DE102015111150A1 (de) Stahllegierung, insbesondere für Fahrwerks- oder Antriebsbauteil, und Fahrwerks- oder Antriebsbauteil
DE112015003075T5 (de) Mantelrohr für Erdöl mit ultrahoher Stärke und Zähigkeit sowie dessen Herstellungsverfahren
EP2255021B1 (fr) Alliage d'acier pour acier faiblement allié destiné à la fabrication de tubes d'acier sans soudure à haute résistance
EP2183396B1 (fr) Acier pour produire des composants de machines mis en forme à l'état solide
EP1474538B1 (fr) Utilisation d'alliage d'acier comme materiau pour des tuyaux pour produire des recipients etanches aux gaz ou comme materiau pour produire des elements moules dans le domaine de la construction legere en acier
DE112017006053T5 (de) Hochfestes und hochzähes rohr für eine perforier-pistole und herstellungsverfahren dafür
EP0753597A2 (fr) Tuyaux pour la fabrication de stabilisateurs et fabrication de stabilisateurs à partir desdits tuyaux
DE102016208400A1 (de) Ultrahochfester Federstahl für eine Ventilfeder
EP1664357B1 (fr) Utilisation d'un acier pour la fabrication des chaines, procedes de production d'une chaine, et chaine ainsi produite
EP2628807A1 (fr) Elément de raccordement de type tige traité et son procédé de fabrication
WO2017157793A1 (fr) Pièces élastiques faites d'un alliage d'acier et procédé de réalisation

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 HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA MK RS

17P Request for examination filed

Effective date: 20090227

17Q First examination report despatched

Effective date: 20090402

AKX Designation fees paid

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: BENTELER DEUTSCHLAND GMBH

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 HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

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

Owner name: BENTELER DEUTSCHLAND GMBH

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502008005702

Country of ref document: DE

Effective date: 20120202

REG Reference to a national code

Ref country code: NL

Ref legal event code: T3

REG Reference to a national code

Ref country code: SE

Ref legal event code: TRGR

LTIE Lt: invalidation of european patent or patent extension

Effective date: 20111130

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: 20111130

Ref country code: NO

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: 20120229

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: 20120330

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: 20111130

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: 20120301

Ref country code: HR

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: 20111130

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: 20111130

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: 20120330

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: 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: 20111130

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: 20111130

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: 20111130

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: 20111130

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: 20120229

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: 20111130

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: 20111130

BERE Be: lapsed

Owner name: BENTELER DEUTSCHLAND G.M.B.H.

Effective date: 20120228

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 FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20111130

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: 20111130

Ref country code: IT

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: 20111130

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: 20120229

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

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

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

Effective date: 20120229

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

Ref country code: LI

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

Effective date: 20120229

Ref country code: CH

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

Effective date: 20120229

26N No opposition filed

Effective date: 20120831

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502008005702

Country of ref document: DE

Effective date: 20120831

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: 20120228

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: 20120229

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 FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120311

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

Ref country code: MT

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: 20111130

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: 20111130

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: 20120207

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: 20080207

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 8

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

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

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

Ref country code: FI

Payment date: 20170213

Year of fee payment: 10

Ref country code: SE

Payment date: 20170216

Year of fee payment: 10

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

Ref country code: AT

Payment date: 20170217

Year of fee payment: 10

Ref country code: NL

Payment date: 20170216

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: SE

Ref legal event code: EUG

REG Reference to a national code

Ref country code: NL

Ref legal event code: MM

Effective date: 20180301

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 535625

Country of ref document: AT

Kind code of ref document: T

Effective date: 20180207

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 NON-PAYMENT OF DUE FEES

Effective date: 20180207

Ref country code: SE

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

Effective date: 20180208

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: 20180207

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: 20180301

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

Ref country code: DE

Payment date: 20190227

Year of fee payment: 12

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

Ref country code: FR

Payment date: 20190220

Year of fee payment: 12

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 502008005702

Country of ref document: DE

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: 20200229

Ref country code: DE

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

Effective date: 20200901