EP0576107B1 - Utilisation d'un acier pour la fabrication de tubes - Google Patents

Utilisation d'un acier pour la fabrication de tubes Download PDF

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Publication number
EP0576107B1
EP0576107B1 EP93250116A EP93250116A EP0576107B1 EP 0576107 B1 EP0576107 B1 EP 0576107B1 EP 93250116 A EP93250116 A EP 93250116A EP 93250116 A EP93250116 A EP 93250116A EP 0576107 B1 EP0576107 B1 EP 0576107B1
Authority
EP
European Patent Office
Prior art keywords
steel
max
pipes
tubes
properties
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP93250116A
Other languages
German (de)
English (en)
Other versions
EP0576107A1 (fr
Inventor
Ingo Von Hagen
Ulrich Dipl.-Ing. Menne
Ulrich Hoffmann
Bernhard Vogelsang
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.)
Vodafone GmbH
Original Assignee
Mannesmann AG
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Filing date
Publication date
Application filed by Mannesmann AG filed Critical Mannesmann AG
Publication of EP0576107A1 publication Critical patent/EP0576107A1/fr
Application granted granted Critical
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Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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

Definitions

  • the invention relates to the use of a steel for the production of construction tubes for mechanically heavy-duty construction elements, in particular for door reinforcements in automobile construction.
  • reinforcement elements are often used in the vehicle doors for stiffening, which partially absorb the kinetic energy of the impacting vehicle and convert it into plastic deformation.
  • the steel pipes used for this have to meet comparatively high requirements with regard to strength, elasticity and working capacity. The same applies, for example, to construction pipes for the manufacture of stabilizers or other mechanically stressed components.
  • Such a construction tubes are usually warmgewalzt ⁇ wherein the final rolling temperature between 900 o C to 1080 o C.
  • the required strength properties can depend on the used steel grade can be adjusted by water hardening.
  • a known steel which is produced by this process contains, for example, 0.18% C, 0.4% Si and 1.14% Mn (balance: iron and usual impurities).
  • the main disadvantage of this process is the additional heat treatment of the steel tube to adjust the mechanical properties. On the one hand, additional heat treatment makes the manufacture of such pipes more expensive.
  • the mechanical properties are altered by thermoforming carried out on the pipe in some areas during further processing, for example to form door reinforcement pipes or in the heat affected zone of weld seams, which may be required for assembly, so that the strength properties can inadvertently decrease significantly compared to those of the initial state.
  • Another steel is known from DE-40 32 996 A1 for the production of steel profiles which are to be used as door reinforcements and which have an external corrosion protection by galvanizing.
  • the steel has the following analysis: 0.18-0.25% C 0.30 - 0.50% Si 1.30 - 2.00% Mn 0.1 - 0.5% Cr 0.1-0.3% Mo 0.02-0.07% Ti 0.002 - 0.007% B Balance iron and usual impurities
  • This steel is a water hardener, the mechanical properties of which therefore only have to be adjusted with a corresponding effort by means of a separate heat treatment after hot rolling. Despite the character of a water hardener, it is possible in the steel pipes made from it to protect them against corrosion by galvanizing, without the set strength properties being reduced to an unacceptable extent by the heating that occurs.
  • the object of the invention is to propose an air-hardening steel for use in the manufacture of mechanically heavy-duty structural pipes, in particular for the automotive industry, which can be produced by a one-step melting process in LD converters and which can already be used in the hot-rolled state due to its good strength properties , ie does not necessarily have to be subjected to a heat treatment before it is used in order to meet the mechanical minimum requirements required, for example, for door booster tubes in terms of tensile strength, yield strength and elongation at break.
  • a secondary object of the invention is to propose such a steel which also has significantly improved properties with regard to cold forming.
  • the steel used according to the invention combines the illustrated positive properties of the already known steels for door reinforcement tubes. At the same time, due to the special chemical composition of the steel described here, metallurgical processes in steel production are simplified. In addition, this steel opens up the possibility of cold forming pipes made from it, so that precision steel pipes can also be produced by cold drawing.
  • the steel described in accordance with the invention is also suitable for the production of stabilizers, for example, which have hitherto been produced from tempered, that is hardened and tempered, precision steel tubes. They have the task of stiffening the axle bodies of motor vehicles when subjected to torsional loads. For this purpose, the stabilizers must withstand the highest possible number of load cycles in a torsion test with changing loads at a given angle of rotation. Stabilizers can be produced from the steel used according to the invention, which are characterized in that they can be cold drawn after hot rolling.
  • the steel used can be processed further using the cold drawing process.
  • This possibility is given by the steel that can be used according to the invention.
  • the hardness of the steel is reduced to such an extent by a 30-minute annealing treatment at approx. 700 o C that cold drawing is easily possible.
  • this is not the case with the steel according to DE-39 35 965 Cl, despite soft annealing.
  • the high strengthening applied during cold drawing increases the mechanical properties, which have been reduced by the soft annealing, so that the pipes are then ready for use.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Articles (AREA)
  • Coating With Molten Metal (AREA)
  • Heat Treatment Of Steel (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)

Claims (1)

  1. Utilisation d'un acier durci à l'air coulé et calmé, constitué de (pourcentages pondéraux) :
       C 0,15 - 0,30 %
       Si 0,50 - 0,80 %
       Mn 2,05 - 3,35 %
       P max. 0,03 %
       S max. 0,03 %
       Cr 0,50 - 1,00 %
       Mo max. 0,60 %
       Al max. 0,05 %
       Ti 0,01 - 0,05 %
       B 0,0015 - 0,0035 %
       N 0,002 - 0,015 %
    le restant étant du fer et des impuretés usuelles, comme matière pour fabriquer des tubes de construction pour des éléments de construction pouvant être mécaniquement fortement sollicités, en particulier pour des renforcements de porte dans la construction automobile, dans la mesure où les conditions suivantes sont remplies :

    Ti (%) : N (%) ≧ 3.4
    Figure imgb0026
    Mn (%) + Cr (%) + Mo (%) + Si (%) ≧ 3,3 %
    Figure imgb0027
EP93250116A 1992-06-10 1993-04-21 Utilisation d'un acier pour la fabrication de tubes Expired - Lifetime EP0576107B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4219336A DE4219336C2 (de) 1992-06-10 1992-06-10 Verwendung eines Stahls zur Herstellung von Konstruktionsrohren
DE4219336 1992-06-10

Publications (2)

Publication Number Publication Date
EP0576107A1 EP0576107A1 (fr) 1993-12-29
EP0576107B1 true EP0576107B1 (fr) 1995-06-14

Family

ID=6460917

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93250116A Expired - Lifetime EP0576107B1 (fr) 1992-06-10 1993-04-21 Utilisation d'un acier pour la fabrication de tubes

Country Status (6)

Country Link
US (1) US5370751A (fr)
EP (1) EP0576107B1 (fr)
JP (1) JPH0673505A (fr)
KR (1) KR100257467B1 (fr)
DE (2) DE4219336C2 (fr)
ES (1) ES2073946T3 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004053620A1 (de) * 2004-11-03 2006-05-04 Salzgitter Flachstahl Gmbh Hochfester, lufthärtender Stahl mit ausgezeichneten Umformeigenschaften
WO2011000351A1 (fr) 2009-06-29 2011-01-06 Salzgitter Flachstahl Gmbh Procédé de production d'une pièce en acier trempant à l'air et pièce obtenue selon ledit procédé
EP2457673A1 (fr) 2010-11-26 2012-05-30 Salzgitter Flachstahl GmbH Procédé de fabrication de composants par formage à chaud de flans
RU2688092C2 (ru) * 2014-11-18 2019-05-17 Арселормиттал Способ изготовления высокопрочного стального изделия и стальное изделие, полученное таким образом
WO2020239671A1 (fr) 2019-05-27 2020-12-03 Salzgitter Flachstahl Gmbh Procédé de fabrication d'un composant soudé à partir d'un acier haute résistance non mis en forme et composant correspondant

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29824068U1 (de) * 1997-11-27 2000-06-21 Mannesmann Ag Warmgewalztes, hochfestes, schweißbares Halbzeug, Druckbehälter und Konstruktionsteil
DE19838673C1 (de) * 1998-08-20 2000-04-20 Mannesmann Ag Verfahren zur Herstellung hochfester und hochzäher Stahlprofilrohre und Anlage zu dessen Durchführung
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
SE515624C2 (sv) 1999-11-02 2001-09-10 Ovako Steel Ab Lufthärdande låg- till mediumkolhaltigt stål för förbättrad värmebehandling
US6523841B2 (en) * 2000-05-31 2003-02-25 Benteler Ag Twist-beam axle for motor vehicles
JP4608739B2 (ja) * 2000-06-14 2011-01-12 Ｊｆｅスチール株式会社 自動車ドア補強用鋼管の製造方法
US7618503B2 (en) * 2001-06-29 2009-11-17 Mccrink Edward J Method for improving the performance of seam-welded joints using post-weld heat treatment
US7926180B2 (en) * 2001-06-29 2011-04-19 Mccrink Edward J Method for manufacturing gas and liquid storage tanks
US7540402B2 (en) * 2001-06-29 2009-06-02 Kva, Inc. Method for controlling weld metal microstructure using localized controlled cooling of seam-welded joints
KR100821117B1 (ko) * 2001-06-29 2008-04-11 에드워드 제이. 맥크링크 스틸 구조물 및 그 형성 방법
US7475478B2 (en) * 2001-06-29 2009-01-13 Kva, Inc. Method for manufacturing automotive structural members
US7232053B2 (en) * 2004-12-30 2007-06-19 Kva, Inc. Seam-welded air hardenable steel constructions
DE502007002467D1 (de) * 2006-07-19 2010-02-11 Benteler Automobiltechnik Gmbh Werkstück aus einer hochfesten Stahllegierung und dessen Verwendung
DE102007030207A1 (de) * 2007-06-27 2009-01-02 Benteler Automobiltechnik Gmbh Verwendung einer hochfesten Stahllegierung zur Herstellung von Strahlrohren mit hoher Festigkeit und guter Umformbarkeit
DE102007058222A1 (de) * 2007-12-03 2009-06-04 Salzgitter Flachstahl Gmbh Stahl für hochfeste Bauteile aus Bändern, Blechen oder Rohren mit ausgezeichneter Umformbarkeit und besonderer Eignung für Hochtemperatur-Beschichtungsverfahren
DE102013101276A1 (de) * 2013-02-08 2014-08-14 Benteler Automobiltechnik Gmbh Verfahren zur Herstellung eines Kraftfahrzeugstabilisators
JP2020142293A (ja) * 2019-03-08 2020-09-10 国立大学法人大阪大学 摩擦攪拌接合用ツール及び摩擦攪拌接合方法
KR20220152532A (ko) 2020-03-13 2022-11-16 타타 스틸 네덜란드 테크날러지 베.뷔. 강 물품 및 그 제조 방법

Family Cites Families (11)

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Publication number Priority date Publication date Assignee Title
US3328211A (en) * 1963-12-05 1967-06-27 Ishikawajima Harima Heavy Ind Method of manufacturing weldable, tough and high strength steel for structure members usable in the ashot-state and steel so made
FR2180192A5 (fr) * 1972-04-12 1973-11-23 Ugine Aciers
US3830669A (en) * 1972-06-13 1974-08-20 Sumitomo Metal Ind Process for manufacturing a cold-rolled high strength steel sheet
JPS52152814A (en) * 1976-06-14 1977-12-19 Nippon Steel Corp Thermo-mechanical treatment of seamless steel pipe
JPS551935A (en) * 1978-06-20 1980-01-09 Kawasaki Steel Corp Front and rear table face table control unit for reversible rolling mills
JPS57104656A (en) * 1980-12-22 1982-06-29 Nippon Kokan Kk <Nkk> Manufacture of high-tensile steel with low galvanizing crack sensitivity
GB2163454B (en) * 1984-07-04 1988-08-24 Nippon Steel Corp Process for manufacturing parts from non-heat refined steel having improved toughness
GB8621903D0 (en) * 1986-09-11 1986-10-15 British Steel Corp Production of steel
DE3728476C1 (en) * 1987-08-26 1989-04-06 Benteler Werke Ag Use of a steel as material for producing pipes for door reinforcement
DE3935965C1 (fr) * 1989-10-26 1991-05-08 Mannesmann Ag, 4000 Duesseldorf, De
DE4032996A1 (de) * 1989-10-26 1991-05-02 Mannesmann Ag Verfahren zur herstellung eines eine hohe verformungsarbeit und einen aeusseren korrosionsschutz aufweisenden stahlprofiles

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004053620A1 (de) * 2004-11-03 2006-05-04 Salzgitter Flachstahl Gmbh Hochfester, lufthärtender Stahl mit ausgezeichneten Umformeigenschaften
WO2011000351A1 (fr) 2009-06-29 2011-01-06 Salzgitter Flachstahl Gmbh Procédé de production d'une pièce en acier trempant à l'air et pièce obtenue selon ledit procédé
DE102010024664A1 (de) 2009-06-29 2011-02-17 Salzgitter Flachstahl Gmbh Verfahren zum Herstellen eines Bauteils aus einem lufthärtbaren Stahl und ein damit hergestelltes Bauteil
US8404061B2 (en) 2009-06-29 2013-03-26 Salzgitter Flachstahl Gmbh Method for producing a component from an air-hardenable steel and component produced therewith
EP2457673A1 (fr) 2010-11-26 2012-05-30 Salzgitter Flachstahl GmbH Procédé de fabrication de composants par formage à chaud de flans
DE102011118491A1 (de) 2010-11-26 2012-05-31 Salzgitter Flachstahl Gmbh Verfahren zur Herstellung von Bauteilen durch Warmumformung von Platinen
RU2688092C2 (ru) * 2014-11-18 2019-05-17 Арселормиттал Способ изготовления высокопрочного стального изделия и стальное изделие, полученное таким образом
US11371109B2 (en) 2014-11-18 2022-06-28 Arcelormittal Method for manufacturing a high strength steel product and steel product thereby obtained
WO2020239671A1 (fr) 2019-05-27 2020-12-03 Salzgitter Flachstahl Gmbh Procédé de fabrication d'un composant soudé à partir d'un acier haute résistance non mis en forme et composant correspondant

Also Published As

Publication number Publication date
EP0576107A1 (fr) 1993-12-29
DE4219336C2 (de) 1995-10-12
JPH0673505A (ja) 1994-03-15
US5370751A (en) 1994-12-06
KR100257467B1 (ko) 2000-06-01
ES2073946T3 (es) 1995-08-16
DE4219336A1 (de) 1993-12-16
DE59300257D1 (de) 1995-07-20

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