WO2009090155A1 - Élément de construction, en particulier composant pour véhicule automobile, en acier biphasique - Google Patents

Élément de construction, en particulier composant pour véhicule automobile, en acier biphasique Download PDF

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Publication number
WO2009090155A1
WO2009090155A1 PCT/EP2009/050284 EP2009050284W WO2009090155A1 WO 2009090155 A1 WO2009090155 A1 WO 2009090155A1 EP 2009050284 W EP2009050284 W EP 2009050284W WO 2009090155 A1 WO2009090155 A1 WO 2009090155A1
Authority
WO
WIPO (PCT)
Prior art keywords
content
approximately
component
motor vehicle
dual
Prior art date
Application number
PCT/EP2009/050284
Other languages
German (de)
English (en)
Inventor
Matthias Kuntz
Heike Langner
Original Assignee
Robert Bosch 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 Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Priority to EP09701976A priority Critical patent/EP2245296B1/fr
Priority to CN200980102178.4A priority patent/CN101918699B/zh
Publication of WO2009090155A1 publication Critical patent/WO2009090155A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/166—Selection of particular materials
    • 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
    • C22C38/001—Ferrous alloys, e.g. steel alloys containing N
    • 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
    • C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
    • 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
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel 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
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel 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
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/48—Ferrous alloys, e.g. steel alloys containing chromium with nickel 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
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/50—Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/58—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/90—Selection of particular materials
    • F02M2200/9053—Metals

Definitions

  • Component in particular a motor vehicle component, made of a dual-phase steel
  • the invention relates to a component, in particular a motor vehicle component, from a
  • a significant limitation of the utilization of high-strength materials is given on the one hand by their mechanical properties, on the other hand by their machinability.
  • For highly stressed components in vehicle construction such.
  • B. Diesel injection components are mainly the cyclic strength and economic workability, d. H. the formability, machinability and weldability of importance.
  • An increase in cyclic resistance, i. H. Higher fatigue strength and higher toughness are usually associated with the addition of expensive alloying elements or complex heat treatment and a limitation on machinability and weldability.
  • high strength steels typically have a martensitic or bainitic structure associated with limited toughness.
  • the object of the invention is for mechanically highly stressed, especially by
  • Embodiment of a component in particular a motor vehicle component, made of a steel with a dual-phase structure of martensite / bainite and ferrite, which is formed of a solid rod material with a component thickness of at least 2.5 mm achieved.
  • Under solid rod material is understood to mean an output component which has a wall thickness which is greater than in cold roll suitable sheet material, in which the material properties are well adjustable in the middle of the wall thickness by external cooling processes, and is usually at most 2 mm. It has been found that the advantageous properties of the inventive steel are also achieved in the case of components made from a rod material having a thickness of at least 10 mm and in particular highly stressed components having a wall thickness of at least 25 mm.
  • an inventively designed device advantageously an increase in the cyclic strength, in particular the fatigue strength and toughness, without the addition of expensive alloying elements or the implementation of elaborate heat treatments realized lungs, whereby the usability of the material steel z. B. for components in
  • Diesel injection systems such as nozzles, injectors or high-pressure pumps and pressure accumulator is increased.
  • future expected requirements for example injection pressures of up to 3,000 bar in diesel engines, can therefore be met.
  • steels according to the invention can be produced which fulfill such extreme requirements. These steels are characterized by strengths above 1100M Pa and a dual phase microstructure of martensite / bainite and ferrite and have a good despite their high strength
  • the component thickness and the chemical composition of the material can be adjusted depending on the predefined mechanical properties in the middle of the component for the application.
  • the microstructure can be designed in such a way that the desired properties are achieved without great heat treatment measures, only by defined cooling or cooling in air at room temperature after forging.
  • the microstructure also reduces the notch sensitivity and thus increases the load capacity under cyclic load.
  • heat treatment in the subsequent component production line can be dispensed with.
  • the invention enables the production of mechanically and / or cyclically highly stressed components with bar material components previously not available
  • An inventive component is particularly suitable as a fuel injection component of a motor vehicle, which can be designed both for the injection of diesel and gasoline.
  • Such a fuel injection component may be a forged and machined component.
  • this has a C content of at least 0, 18% and at most 0.25%, an Si content of at least 0.2% and at most 1.1%, an Mn content of at least 1% and at most 2%, a P content of at most 0.025%, an S content of at most 0.025%, a Cr content of at least
  • a very conversion-stable behavior is set for steels of group 1, in which even after slow or moderate cooling of an austenitizing temperature, for example after forging, a completely martensitic structure is present.
  • the cooling rate and, if necessary, the tempering treatment the strength of the basic structure of fine-grained martensite in the range of about 1200 to about. 1500 MPa, comparable with a hardness of 400 - 460 HVIO.
  • microstructural conditions and strengths can be adjusted by slight changes in the chemical composition and by suitable cooling from the hot forming heat without additional heat treatments being required.
  • these materials Due to the microstructure, these materials have a very high ductility despite their high strength. Due to the limited alloying element content, the materials are weldable and are characterized by a low residual stress after welding due to the conversion inertia. This property combination is rather uncommon for steels. Because of the high strength, a very good cyclic resistance of the materials is ensured, which is further improved by the ductile, fault-tolerant structure. Because of the phase fractions ferrite and bainite, the described dual-phase microstructures advantageously also have sufficient machinability compared to tempered steels with the same strength.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat Treatment Of Articles (AREA)
  • Heat Treatment Of Steel (AREA)

Abstract

L'invention concerne un élément de construction, en particulier un composant pour véhicule automobile, en un acier qui présente un réseau biphasique de martensite/bainite et de ferrite, l'élément de construction étant formé d'un matériau en barre massive, l'épaisseur de l'élément de construction étant d'au moins 2,5 mm.
PCT/EP2009/050284 2008-01-15 2009-01-13 Élément de construction, en particulier composant pour véhicule automobile, en acier biphasique WO2009090155A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP09701976A EP2245296B1 (fr) 2008-01-15 2009-01-13 Élément de construction, en particulier composant pour véhicule automobile, en acier biphasique
CN200980102178.4A CN101918699B (zh) 2008-01-15 2009-01-13 由双相钢制造的构件,尤其是汽车部件

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200810004371 DE102008004371A1 (de) 2008-01-15 2008-01-15 Bauelement, insbesondere eine Kraftfahrzeugkomponente, aus einem Dualphasen-Stahl
DE102008004371.0 2008-01-15

Publications (1)

Publication Number Publication Date
WO2009090155A1 true WO2009090155A1 (fr) 2009-07-23

Family

ID=40532581

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2009/050284 WO2009090155A1 (fr) 2008-01-15 2009-01-13 Élément de construction, en particulier composant pour véhicule automobile, en acier biphasique

Country Status (4)

Country Link
EP (1) EP2245296B1 (fr)
CN (1) CN101918699B (fr)
DE (1) DE102008004371A1 (fr)
WO (1) WO2009090155A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102286698A (zh) * 2010-06-17 2011-12-21 宝山钢铁股份有限公司 一种塑料模具钢及其制造方法
CN102650021A (zh) * 2012-05-28 2012-08-29 上海大学 贝氏体预硬型塑料模具钢及其制备和热处理方法
EP3061838A1 (fr) 2015-02-27 2016-08-31 Swiss Steel AG Produit longitudinal bainitique nu et son procédé de fabrication
WO2017058835A1 (fr) * 2015-09-28 2017-04-06 Crs Holdings, Inc. Alliage d'acier à haute résistance, haute résilience et excellente durée de résistance à la fatigue pour applications d'arbre de moteur à boue

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011075697A1 (de) * 2011-05-12 2012-11-15 Robert Bosch Gmbh Chrom-Molybden-Legierung
DE102016108633A1 (de) * 2016-05-10 2017-11-30 Benteler Steel/Tube Gmbh Kraftstoffeinspritzleitung und rohrförmiger Leitungskanal

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2495189A1 (fr) * 1980-10-17 1982-06-04 Kobe Steel Ltd Tole d'acier de haute resistance et son procede de fabrication
US5972129A (en) * 1994-11-30 1999-10-26 Creusot Loire Industrie Process for smelting a titanium steel and steel obtained
DE19911287C1 (de) * 1999-03-13 2000-08-31 Thyssenkrupp Stahl Ag Verfahren zum Erzeugen eines Warmbandes
DE102004061175A1 (de) 2003-12-16 2005-07-21 Usui Kokusai Sangyo Kaisha, Ltd. Hochdruckkraftstoffleitung für Dieselmotoren
WO2007051080A2 (fr) * 2005-10-24 2007-05-03 Exxonmobil Upstream Research Company Acier biphase haute resistance presentant un faible rapport limite d'élasticité/résistance à la traction, une haute tenacite et une soudabilite superieure

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4501626A (en) * 1980-10-17 1985-02-26 Kabushiki Kaisha Kobe Seiko Sho High strength steel plate and method for manufacturing same
CA1332210C (fr) * 1985-08-29 1994-10-04 Masaaki Katsumata Tiges en acier a faible teneur en carbone, a grande resistance, et methode de fabrication
KR100515399B1 (ko) * 2000-06-07 2005-09-16 신닛뽄세이테쯔 카부시키카이샤 성형성이 우수한 강관 및 그 제조 방법
EP1767659A1 (fr) * 2005-09-21 2007-03-28 ARCELOR France Procédé de fabrication d'une pièce en acier de microstructure multi-phasée
DE102005052069B4 (de) * 2005-10-28 2015-07-09 Saarstahl Ag Verfahren zum Herstellen von Vormaterial aus Stahl durch Warmverformen
DE102007014809A1 (de) * 2006-04-04 2007-10-11 Trw Automotive Gmbh Kraftbegrenzer für einen Gurtaufroller

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2495189A1 (fr) * 1980-10-17 1982-06-04 Kobe Steel Ltd Tole d'acier de haute resistance et son procede de fabrication
US5972129A (en) * 1994-11-30 1999-10-26 Creusot Loire Industrie Process for smelting a titanium steel and steel obtained
DE19911287C1 (de) * 1999-03-13 2000-08-31 Thyssenkrupp Stahl Ag Verfahren zum Erzeugen eines Warmbandes
DE102004061175A1 (de) 2003-12-16 2005-07-21 Usui Kokusai Sangyo Kaisha, Ltd. Hochdruckkraftstoffleitung für Dieselmotoren
WO2007051080A2 (fr) * 2005-10-24 2007-05-03 Exxonmobil Upstream Research Company Acier biphase haute resistance presentant un faible rapport limite d'élasticité/résistance à la traction, une haute tenacite et une soudabilite superieure

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102286698A (zh) * 2010-06-17 2011-12-21 宝山钢铁股份有限公司 一种塑料模具钢及其制造方法
CN102650021A (zh) * 2012-05-28 2012-08-29 上海大学 贝氏体预硬型塑料模具钢及其制备和热处理方法
CN102650021B (zh) * 2012-05-28 2013-10-16 上海大学 贝氏体预硬型塑料模具钢及其制备和热处理方法
EP3061838A1 (fr) 2015-02-27 2016-08-31 Swiss Steel AG Produit longitudinal bainitique nu et son procédé de fabrication
EP3061837A1 (fr) 2015-02-27 2016-08-31 Swiss Steel AG Produit longitudinal bainitique nu et son procédé de fabrication
WO2017058835A1 (fr) * 2015-09-28 2017-04-06 Crs Holdings, Inc. Alliage d'acier à haute résistance, haute résilience et excellente durée de résistance à la fatigue pour applications d'arbre de moteur à boue
US10280492B2 (en) * 2015-09-28 2019-05-07 Crs Holdings, Inc. Alloy for mud motor shaft applications with high strength, high impact toughness and excellent fatigue life

Also Published As

Publication number Publication date
EP2245296B1 (fr) 2012-12-05
DE102008004371A1 (de) 2009-07-16
CN101918699B (zh) 2013-03-27
EP2245296A1 (fr) 2010-11-03
CN101918699A (zh) 2010-12-15

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