WO2008135022A1 - Microalliage d'acier afp à faible teneur en ti et composant réalisé dans cet alliage, destiné à des moteurs à combustion interne - Google Patents

Microalliage d'acier afp à faible teneur en ti et composant réalisé dans cet alliage, destiné à des moteurs à combustion interne Download PDF

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Publication number
WO2008135022A1
WO2008135022A1 PCT/DE2008/000737 DE2008000737W WO2008135022A1 WO 2008135022 A1 WO2008135022 A1 WO 2008135022A1 DE 2008000737 W DE2008000737 W DE 2008000737W WO 2008135022 A1 WO2008135022 A1 WO 2008135022A1
Authority
WO
WIPO (PCT)
Prior art keywords
steel
alloy steel
steel according
piston
weight
Prior art date
Application number
PCT/DE2008/000737
Other languages
German (de)
English (en)
Inventor
Andreas Seeger-Van Nie
Original Assignee
Mahle International 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 Mahle International Gmbh filed Critical Mahle International Gmbh
Publication of WO2008135022A1 publication Critical patent/WO2008135022A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F3/00—Pistons 
    • F02F3/0084—Pistons  the pistons being constructed from specific 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
    • C22C38/12—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
    • C22C38/14—Ferrous alloys, e.g. steel alloys containing titanium or zirconium
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F3/00—Pistons 
    • F02F3/0084—Pistons  the pistons being constructed from specific materials
    • F02F3/0092—Pistons  the pistons being constructed from specific materials the material being steel-plate
    • 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
    • C21D6/02—Hardening by precipitation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2201/00—Metals
    • F05C2201/02—Light metals
    • F05C2201/021—Aluminium
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2201/00—Metals
    • F05C2201/04—Heavy metals
    • F05C2201/0403—Refractory metals, e.g. V, W
    • F05C2201/0406—Chromium
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2201/00—Metals
    • F05C2201/04—Heavy metals
    • F05C2201/0403—Refractory metals, e.g. V, W
    • F05C2201/0409—Molybdenum
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2201/00—Metals
    • F05C2201/04—Heavy metals
    • F05C2201/0403—Refractory metals, e.g. V, W
    • F05C2201/0412—Titanium
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2201/00—Metals
    • F05C2201/04—Heavy metals
    • F05C2201/0433—Iron group; Ferrous alloys, e.g. steel
    • F05C2201/0448—Steel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2201/00—Metals
    • F05C2201/04—Heavy metals
    • F05C2201/0433—Iron group; Ferrous alloys, e.g. steel
    • F05C2201/0466—Nickel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2201/00—Metals
    • F05C2201/04—Heavy metals
    • F05C2201/0469—Other heavy metals
    • F05C2201/0475—Copper or alloys thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2201/00—Metals
    • F05C2201/04—Heavy metals
    • F05C2201/0469—Other heavy metals
    • F05C2201/0487—Manganese
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2203/00—Non-metallic inorganic materials
    • F05C2203/04—Phosphor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2203/00—Non-metallic inorganic materials
    • F05C2203/06—Silicon
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2203/00—Non-metallic inorganic materials
    • F05C2203/08—Ceramics; Oxides
    • F05C2203/0804—Non-oxide ceramics
    • F05C2203/0813—Carbides
    • F05C2203/0817—Carbides of silicon
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2203/00—Non-metallic inorganic materials
    • F05C2203/08—Ceramics; Oxides
    • F05C2203/0804—Non-oxide ceramics
    • F05C2203/083—Nitrides
    • F05C2203/0843—Nitrides of silicon
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2203/00—Non-metallic inorganic materials
    • F05C2203/08—Ceramics; Oxides
    • F05C2203/0865—Oxide ceramics
    • F05C2203/0886—Silica

Definitions

  • the present invention relates to an alloyed steel and its use.
  • the material steel is used extensively in the automotive industry, where it is the most important material.
  • tempered steels are usually used because they meet the mechanical requirements for such components.
  • the tempered steels are tempered after the manufacturing process (eg forging process) in a separate heat treatment step to the desired strength properties out.
  • the production of such vehicle components is complicated because of the necessary compensation step and therefore costly. Therefore, for certain applications, the tempered steels are replaced by precipitation-hardening ferritic-pearlitic steels (in the following: AFP steels) according to DIN EN 10267 (formerly: Stahl-Eisen-Werkstoffblatt 101).
  • AFP steels precipitation-hardening ferritic-pearlitic steels
  • Forged pistons and piston parts are usually tempered steels according to DIN EN 10083 used, for example.
  • DE 41 09 628 C2 discloses to use AFP steel of the type 38MnSiVS5 in a piston with forged steel areas in the areas adjacent to the combustion chamber, at the hubs and in the area of the piston skirt.
  • EP 1 161 624 B1 describes a built-up piston whose lower piston part is made of AFP steel.
  • the mechanical properties of AFP steels are determined, among other things, by the grain size of the structural constituents and by the effectiveness of the precipitation - -
  • micro-alloying elements include the elements vanadium, niobium, aluminum and titanium, although not necessarily all elements must be alloyed simultaneously.
  • the setting of a fine-grained austenite during the heating, rolling and forging process is of particular importance.
  • the object of the present invention is to provide an alloyed steel based on an AFP steel whose mechanical properties are comparable to the mechanical properties of tempered steels and suitable for use in internal combustion engines.
  • the solution consists in an alloyed steel with the features of claim 1.
  • the alloy steel according to the invention is characterized by the following composition, indicated in each case in% by weight: carbon: 0.35-0.50; Silicon: 0.15-0.80; Manganese: 1.20 - 2.00; Phosphorus: 0.00 - 0.0025; Nitrogen: 0.010-0.035; Chromium: 0.00-0.50; Molybdenum: 0.00-0.050; Nickel: 0.00 - 0.15; Copper: 0.00-0.40; Vanadium: 0.13-0.40; Titanium: 0.001-0.004; Aluminum: 0.00-0.04; Niobium: 0.00 - - - -
  • the nitrides and carbonitrides of vanadium and niobium contribute to an increase in the strength values, in particular the 0.2% yield strength, to a particularly great extent.
  • the composition of the steel alloyed according to the invention thus causes sufficient nitrides and carbonitrides to form the other micro-alloying elements present.
  • a sufficiently fine-grained microstructure is created. The result is an alloyed steel based on an AFP steel whose mechanical properties are comparable to the mechanical properties of a tempered steel.
  • a preferred development is that the boundary condition Al [wt .-%] x N [wt .-%]> 2 x 10 "4 (I) is satisfied.As aluminum nitrides are redissolved at a higher temperature, the proportion of remaining undissolved aluminum nitrides are adjusted on the basis of the temperature-dependent solubility product taking into account the forging temperature. - -
  • niobium partially or completely takes the place of aluminum in the alloy according to the invention, this boundary condition for the niobium content applies correspondingly on the basis of the solubility product of the niobium nitrides.
  • boundary condition Mn [wt .-%] + 2.5 x Si [wt .-%]> 2.3 (IV) may be satisfied. Since silicon and manganese contribute to solid solution hardening, the adherence to this boundary condition optimizes solid solution hardening.
  • the alloyed steel according to the invention preferably contains at most 0.004% by weight of titanium, more preferably at most 0.003% by weight of titanium. It has been found that a steel according to the invention with this particularly low titanium content has particularly good mechanical properties.
  • the alloy steel of the present invention may contain sulfur in a proportion of 0.005 wt% to 0.10 wt% for the purpose of improving the workability.
  • elongated lines of sulfide may be produced which impair the mechanical properties of the steel.
  • a piston head for a two-piece piston of an internal combustion engine was made of the alloy steel according to the invention.
  • it is a piston head for a so-called “Ferrotherm®" piston, in which the piston head, together with the piston rings, performs the sealing function with respect to the combustion chamber and forwards the gas forces to the crank mechanism and withstand thermal stresses.
  • the starting point for the preparation was a starting material having the composition according to Table 1.
  • the composition was determined by means of a test analysis.
  • the alloyed steel according to the invention thus also exhibits, transverse to the fiber direction, strength properties which are comparable to those of a conventional tempered steel
  • the alloyed steel according to the invention is used for producing a component, in particular a piston part, such as a piston head or piston upper part and / or piston lower part (two-part steel pistons) and / or a one-piece piston.
  • a piston part such as a piston head or piston upper part and / or piston lower part (two-part steel pistons) and / or a one-piece piston.

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)
  • Pistons, Piston Rings, And Cylinders (AREA)

Abstract

L'invention concerne un alliage d'acier dont la composition est la suivante, indiquée en % en poids: carbone: 0,35 - 0,50; silicium: 0,15 - 0,80; manganèse: 1,20 - 2,00; phosphore: 0,00 - 0,0025; azote: 0,010 - 0,035; chrome: 0,00 - 0,50; molybdène: 0,00 - 0,050; nickel: 0,00 - 0,15; cuivre: 0,00 - 0,40; vanadium: 0,13 - 0,40; titane: 0,001 - 0,004; aluminium: 0,00 - 0,04; niobium: 0,00 - 0,05, au moins deux des éléments vanadium, aluminium et niobium étant obligatoirement présents dans l'alliage. L'alliage d'acier selon l'invention peut être employé dans un composant de moteurs à combustion interne, notamment dans des pistons ou des composants de pistons.
PCT/DE2008/000737 2007-05-03 2008-04-30 Microalliage d'acier afp à faible teneur en ti et composant réalisé dans cet alliage, destiné à des moteurs à combustion interne WO2008135022A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200710021101 DE102007021101A1 (de) 2007-05-03 2007-05-03 Legierter Stahl und dessen Verwendung
DE102007021101.7 2007-05-03

Publications (1)

Publication Number Publication Date
WO2008135022A1 true WO2008135022A1 (fr) 2008-11-13

Family

ID=39768619

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2008/000737 WO2008135022A1 (fr) 2007-05-03 2008-04-30 Microalliage d'acier afp à faible teneur en ti et composant réalisé dans cet alliage, destiné à des moteurs à combustion interne

Country Status (2)

Country Link
DE (1) DE102007021101A1 (fr)
WO (1) WO2008135022A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019230946A1 (fr) * 2018-05-31 2019-12-05 日本製鉄株式会社 Matériau d'acier pour pistons en acier

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009048124A1 (de) 2009-10-02 2011-04-07 Daimler Ag Stahlkolben für Verbrennungsmotoren
DE102011075697A1 (de) 2011-05-12 2012-11-15 Robert Bosch Gmbh Chrom-Molybden-Legierung
DE102013009209A1 (de) 2013-05-31 2014-03-27 Daimler Ag Kolben für einen Verbrennungsmotor sowie Verfahren und Vorrichtung zu dessen Herstellung
DE102014001806A1 (de) 2014-02-11 2014-08-28 Daimler Ag Kolben für einen Verbrennungsmotor sowie Verfahren zu dessen Herstellung
CN113122771B (zh) * 2019-12-31 2022-01-14 中内凯思汽车新动力系统有限公司 一种高性能摩擦焊接钢质活塞及其制备方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61235541A (ja) * 1985-12-05 1986-10-20 Kawasaki Steel Corp 非調質高強度靭性熱間加工鋼材
DE4014072A1 (de) * 1989-06-09 1990-12-20 Thyssen Edelstahlwerke Ag Verwendung von ausscheidungshaertenden ferritisch-perlitischen (afp-)staehlen als werkstoff fuer gaswechselventile von verbrennungsmotoren
JPH07102340A (ja) * 1993-10-05 1995-04-18 Nippon Steel Corp 疲労特性に優れる非調質鋼の製造方法
DE4343565C1 (de) * 1993-12-21 1995-06-08 Ver Schmiedewerke Gmbh Verfahren zur Herstellung von Schienenrädern und Schienenradteilen
EP1546426A1 (fr) * 2002-09-27 2005-06-29 CDP Bharat Forge GmbH Composition d'acier et pieces matricees fabriquees a partir de cette composition

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2752666A (en) * 1954-07-12 1956-07-03 Sintercast Corp America Heat resistant titanium carbide containing body and method of making same
DE4109628C2 (de) 1990-07-12 1997-04-17 Mahle Gmbh Verwendung eines ausscheidungshärtenden ferritisch perlitischen Stahls
FR2774098B1 (fr) * 1998-01-28 2001-08-03 Ascometal Sa Acier et procede pour la fabrication de pieces de mecanique secables
DE19910582A1 (de) 1999-03-10 2000-09-28 Mahle Gmbh Gebauter Kolben
US6395109B1 (en) * 2000-02-15 2002-05-28 Cargill, Incorporated Bar product, cylinder rods, hydraulic cylinders, and method for manufacturing

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61235541A (ja) * 1985-12-05 1986-10-20 Kawasaki Steel Corp 非調質高強度靭性熱間加工鋼材
DE4014072A1 (de) * 1989-06-09 1990-12-20 Thyssen Edelstahlwerke Ag Verwendung von ausscheidungshaertenden ferritisch-perlitischen (afp-)staehlen als werkstoff fuer gaswechselventile von verbrennungsmotoren
JPH07102340A (ja) * 1993-10-05 1995-04-18 Nippon Steel Corp 疲労特性に優れる非調質鋼の製造方法
DE4343565C1 (de) * 1993-12-21 1995-06-08 Ver Schmiedewerke Gmbh Verfahren zur Herstellung von Schienenrädern und Schienenradteilen
EP1546426A1 (fr) * 2002-09-27 2005-06-29 CDP Bharat Forge GmbH Composition d'acier et pieces matricees fabriquees a partir de cette composition

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019230946A1 (fr) * 2018-05-31 2019-12-05 日本製鉄株式会社 Matériau d'acier pour pistons en acier
CN112204161A (zh) * 2018-05-31 2021-01-08 日本制铁株式会社 钢活塞用钢材
JPWO2019230946A1 (ja) * 2018-05-31 2021-06-03 日本製鉄株式会社 スチールピストン用鋼材
EP3805418A4 (fr) * 2018-05-31 2021-11-17 Nippon Steel Corporation Matériau d'acier pour pistons en acier
CN112204161B (zh) * 2018-05-31 2022-01-11 日本制铁株式会社 钢活塞用钢材

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Publication number Publication date
DE102007021101A1 (de) 2008-11-06

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