EP2245296A1 - Bauelement, insbesondere eine kraftfahrzeugkomponente, aus einem dualphasen-stahl - Google Patents
Bauelement, insbesondere eine kraftfahrzeugkomponente, aus einem dualphasen-stahlInfo
- Publication number
- EP2245296A1 EP2245296A1 EP09701976A EP09701976A EP2245296A1 EP 2245296 A1 EP2245296 A1 EP 2245296A1 EP 09701976 A EP09701976 A EP 09701976A EP 09701976 A EP09701976 A EP 09701976A EP 2245296 A1 EP2245296 A1 EP 2245296A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- content
- approximately
- component
- motor vehicle
- dual
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229910000885 Dual-phase steel Inorganic materials 0.000 title description 2
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 23
- 239000010959 steel Substances 0.000 claims abstract description 23
- 239000000463 material Substances 0.000 claims abstract description 22
- 229910000734 martensite Inorganic materials 0.000 claims abstract description 9
- 229910001563 bainite Inorganic materials 0.000 claims abstract description 8
- 229910000859 α-Fe Inorganic materials 0.000 claims abstract description 8
- 239000000203 mixture Substances 0.000 claims description 10
- 239000000126 substance Substances 0.000 claims description 10
- 238000002347 injection Methods 0.000 claims description 7
- 239000007924 injection Substances 0.000 claims description 7
- 239000007787 solid Substances 0.000 claims description 4
- 230000009977 dual effect Effects 0.000 claims description 3
- 239000000446 fuel Substances 0.000 claims description 3
- 238000001816 cooling Methods 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 7
- 125000004122 cyclic group Chemical group 0.000 description 6
- 238000005275 alloying Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000005242 forging Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 210000004072 lung Anatomy 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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
Description
Claims
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 |
PCT/EP2009/050284 WO2009090155A1 (de) | 2008-01-15 | 2009-01-13 | Bauelement, insbesondere eine kraftfahrzeugkomponente, aus einem dualphasen-stahl |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2245296A1 true EP2245296A1 (de) | 2010-11-03 |
EP2245296B1 EP2245296B1 (de) | 2012-12-05 |
Family
ID=40532581
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09701976A Not-in-force EP2245296B1 (de) | 2008-01-15 | 2009-01-13 | Bauelement, insbesondere eine kraftfahrzeugkomponente, aus einem dualphasen-stahl |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP2245296B1 (de) |
CN (1) | CN101918699B (de) |
DE (1) | DE102008004371A1 (de) |
WO (1) | WO2009090155A1 (de) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102286698B (zh) * | 2010-06-17 | 2013-06-26 | 宝山钢铁股份有限公司 | 一种塑料模具钢及其制造方法 |
DE102011075697A1 (de) * | 2011-05-12 | 2012-11-15 | Robert Bosch Gmbh | Chrom-Molybden-Legierung |
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 |
EP3061837A1 (de) | 2015-02-27 | 2016-08-31 | Swiss Steel AG | Blankes bainitisches Langprodukt und Verfahren zu dessen Herstellung |
ES2770007T3 (es) * | 2015-09-28 | 2020-06-30 | Crs Holdings Inc | Aleación de acero con resistencia alta, alta tenacidad al impacto y excelente resistencia a la fatiga para aplicaciones de eje de motor al barro |
DE102016108633A1 (de) * | 2016-05-10 | 2017-11-30 | Benteler Steel/Tube Gmbh | Kraftstoffeinspritzleitung und rohrförmiger Leitungskanal |
Family Cites Families (11)
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 |
CA1195152A (en) * | 1980-10-17 | 1985-10-15 | Kobe Steel Ltd. | High strength steel plate and method for manufacturing same |
CA1332210C (en) * | 1985-08-29 | 1994-10-04 | Masaaki Katsumata | High strength low carbon steel wire rods and method of producing them |
FR2727431B1 (fr) * | 1994-11-30 | 1996-12-27 | Creusot Loire | Procede d'elaboration d'un acier au titane et acier obtenu |
DE19911287C1 (de) * | 1999-03-13 | 2000-08-31 | Thyssenkrupp Stahl Ag | Verfahren zum Erzeugen eines Warmbandes |
CN100340690C (zh) * | 2000-06-07 | 2007-10-03 | 新日本制铁株式会社 | 可成形性优异的钢管及其生产方法 |
JP2005201254A (ja) * | 2003-12-16 | 2005-07-28 | Usui Kokusai Sangyo Kaisha Ltd | ディーゼルエンジン用高圧燃料配管 |
EP1767659A1 (de) * | 2005-09-21 | 2007-03-28 | ARCELOR France | Herstellungsverfahren eines Stahlwerkstücks mit mehrphasigem Mikrogefüge |
CA2627171A1 (en) * | 2005-10-24 | 2007-05-03 | Narasimha-Rao V. Bangaru | High strength dual phase steel with low yield ratio, high toughness and superior weldability |
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 |
-
2008
- 2008-01-15 DE DE200810004371 patent/DE102008004371A1/de not_active Withdrawn
-
2009
- 2009-01-13 EP EP09701976A patent/EP2245296B1/de not_active Not-in-force
- 2009-01-13 CN CN200980102178.4A patent/CN101918699B/zh active Active
- 2009-01-13 WO PCT/EP2009/050284 patent/WO2009090155A1/de active Application Filing
Non-Patent Citations (1)
Title |
---|
See references of WO2009090155A1 * |
Also Published As
Publication number | Publication date |
---|---|
CN101918699A (zh) | 2010-12-15 |
DE102008004371A1 (de) | 2009-07-16 |
WO2009090155A1 (de) | 2009-07-23 |
EP2245296B1 (de) | 2012-12-05 |
CN101918699B (zh) | 2013-03-27 |
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