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EP2401532A1 - Composition d'acier pour produire des segments de piston et des chemises de cylindre - Google Patents

Composition d'acier pour produire des segments de piston et des chemises de cylindre

Info

Publication number
EP2401532A1
EP2401532A1 EP09744325A EP09744325A EP2401532A1 EP 2401532 A1 EP2401532 A1 EP 2401532A1 EP 09744325 A EP09744325 A EP 09744325A EP 09744325 A EP09744325 A EP 09744325A EP 2401532 A1 EP2401532 A1 EP 2401532A1
Authority
EP
European Patent Office
Prior art keywords
weight
steel material
material composition
max
piston rings
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
Application number
EP09744325A
Other languages
German (de)
English (en)
Other versions
EP2401532B1 (fr
Inventor
Laszlo Pelsoeczy
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.)
Federal Mogul Burscheid GmbH
Original Assignee
Federal Mogul Burscheid 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 Federal Mogul Burscheid GmbH filed Critical Federal Mogul Burscheid GmbH
Publication of EP2401532A1 publication Critical patent/EP2401532A1/fr
Application granted granted Critical
Publication of EP2401532B1 publication Critical patent/EP2401532B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • C22C38/34—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of 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
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/22—Ferrous alloys, e.g. steel alloys containing chromium 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
    • C22C38/24—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
    • C22C38/28—Ferrous alloys, e.g. steel alloys containing chromium with titanium or zirconium

Definitions

  • the present invention relates to a steel material composition, which is particularly suitable for the production of piston rings and cylinder liners. Moreover, the present invention relates to a method for producing the steel material composition according to the invention. Finally, the present invention relates to piston rings and cylinder liners, which comprise as basic body the steel material compositions according to the invention.
  • piston rings seal the gap between the piston head and the cylinder wall with respect to the combustion chamber.
  • Piston ring with its edges alternately bear against the upper or lower groove flank of Kolbenringnut. In each case against each other sliding partners occurs in
  • Piston rings For the production of highly stressed parts of internal combustion engines, such as piston rings and cylinder liners, usually cast iron materials or cast iron alloys are used. Piston rings, particularly compression rings, are subject to increasing loads in highly stressed engines, including compression peak pressure, combustion temperature, EGR, and lubricating film reduction, which significantly affect their performance characteristics, such as wear, fire resistance, microwelding, and corrosion resistance.
  • cast iron materials according to the prior art have a high risk of breakage, so that it often comes to ring breaking when using existing materials. Increased mechanical-dynamic loads lead to shorter lifetimes of piston rings or cylinder liners. Likewise, it comes to heavy wear and corrosion on the tread and flank.
  • piston rings and cylinder liners made of high-quality steel (tempered and high-alloyed, such as material 1.4112). This refers to ferrous materials with less than 2.08 wt .-% carbon as steel. If the carbon content is higher, then one speaks of Cast iron. Steel materials have better strength and toughness properties compared with cast iron, since there is no disturbance due to free graphite in the basic structure.
  • Cast iron has a much lower melting temperature than steel. The difference can be up to 350 ° C, depending on the chemical composition. Cast iron is therefore easier to melt and cast, since a lower melting temperature means a lower casting temperature and thus a smaller shrinkage due to shrinkage, whereby the cast material has fewer voids or hot and cold cracks. A lower casting temperature also leads to a lower load on the molding material (erosion, gas porosity, sand inclusions) and the furnace and lower melt costs.
  • the melting temperature of the ferrous material depends not only on its carbon content but also on the "degree of saturation.” The simplified formula applies:
  • Melting temperature of 1150 0 C has. The degree of saturation of steel is dependent of the chemical composition, about 0.18. Eutectic steel has a melting temperature of 1500 0 C.
  • the degree of saturation can be significantly influenced by the Si or P content. For example, a 3% by weight higher content of silicon will be similar to a 1% higher C content. It is thus possible to produce a steel material with a C content of 1% by weight and 9.78% by weight of silicon, which has the same melting temperature as cast iron with a degree of saturation of 1.0 (C: 3.26% by weight). -%, Si: 3.0 wt .-%).
  • Piston rings and cylinder liners made of high-silicon steel cast material are known in the art.
  • the silicon present in higher amounts adversely affects the hardenability of the material as its austenite transformation temperature "Ac3" is increased.
  • the present invention to provide a high siliceous steel material composition, in particular for the production of piston rings and cylinder liners, which has an improved wear resistance.
  • the composition of the steel material is said to exceed the properties of tempered ductile iron in at least one of the following ways, when manufactured by gravity casting: - Mechanical properties such as modulus of elasticity, bending strength
  • the ingredients are included such that the sum of all said or not explicitly mentioned starting materials, ingredients, ingredients, elements, and additives in each case give 100% by weight.
  • the proportion of starting materials, ingredients, ingredients, elements and additives can be adjusted by various methods known to those skilled in the art.
  • the chemical composition is adjusted in particular depending on the workpiece to be produced.
  • the increased wear resistance is achieved according to the invention by the carbide formers niobium, titanium, vanadium and tungsten. According to the invention, it has been found that a proportion of 2.0-7.0% by weight of these carbide formers leads to good wear resistance without the machinability of the resulting material deteriorating such that the production costs would thereby increase disproportionately.
  • Table 1 gives a list of the hardness of carbides of the elements niobium, titanium, vanadium and tungsten:
  • the following elements are preferably present in the steel material composition according to the invention at a maximum in the stated proportion, based on 100% by weight of the steel material composition:
  • the steel material composition according to the invention only contain elements selected from the group consisting of B, C, Cr, Cu, Fe, Mn, Mo, Nb, Ni, P, Pb, S, Si, Sn, Ti, V and W, the sum of these elements being 100% by weight.
  • the steel material composition according to the invention reduces the tendency of the workpieces made therefrom to change their shape under high heat and thus ensures a permanently high performance and also reduces the oil consumption. Due to its outstanding properties, the steel material composition according to the invention is therefore particularly suitable for the production of piston rings and cylinder liners in the automotive and LB range, or for valve seat rings and guides. In addition, so can drive seals (LWDs), carrier plates for Brake pads of disc brakes (Black Plates) and rings for cooling units, pump nozzles, as well as cylinder liners (liners) and Schonbuchsen or parts for the chemical industry are produced.
  • the steel material composition according to the invention furthermore has the advantage that the production of, for example, steel piston rings and cylinder liners with the machines and technologies necessary for the production of cast iron workpieces is made possible.
  • the production costs are equivalent to those of cast iron piston rings, which offers the manufacturer a cost advantage and a better added value.
  • material parameters can be set freely by the supplier.
  • a process is also provided for producing a steel material composition according to the invention, which comprises the following steps:
  • starting materials for example, steel scrap, circulation material and alloying materials can be used.
  • the melting process takes place in an oven, preferably a cupola.
  • a blank is produced with solidification of the melt.
  • the blank can be cast using methods known in the art, such as centrifugal casting, continuous casting, stamp pressing, croning or preferably green sand molding.
  • the mold After cooling of the steel material composition, the mold is liberated and the resulting blank cleaned.
  • the blank can then be tempered. This is done through the following steps: c. Austenitizing the steel material composition above its Ac 3 temperature, d. Quenching the steel material composition in a suitable quenching medium, and e. Tempering the steel material composition at a temperature in the
  • Range of 400 to 700 0 C in a controlled atmosphere furnace Range of 400 to 700 0 C in a controlled atmosphere furnace.
  • the quenching medium used is preferably oil.
  • nitriding of the resulting steel material composition can be carried out following the aforementioned method steps. This can be done for example by gas nitriding, plasma nitriding or pressure nitriding.
  • a piston ring was produced from a steel material composition according to the invention of the following composition:
  • P 0.03 wt.% Fe: balance This was done by making a melt of the starting materials (steel scrap, recycled material and alloying materials), and pouring the melt into a prefabricated green sand mold. Subsequently, the shape was learned and cleaned the piston ring obtained. The piston ring was then tempered. This is done by austenitizing above the Ac3 temperature of the steel material composition, quenching in oil, and tempering at a temperature in the range of 400 to 700 ° C in a protective gas furnace.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)

Abstract

L'invention concerne une composition d'acier servant en particulier à la production de segments de piston et de chemises de cylindre et contenant les éléments suivants dans les proportions indiquées par rapport à 100 % en poids d'acier : 0,5 à 1,2 % en poids de C, 2,0 à 20,0 % en poids de Cr, 49,0 à 97,1 % en poids de Fe, 0,1 à 3,0 % en poids de Mn, 0,1 à 3,0 % en poids de Mo, 0 à 7,0 % en poids de Nb, 2,0 à 10,0 % en poids de Si, 0 à 7,0 % en poids de Ti, 0 à 7,0 % en poids de V et 0 à 0,5 % en poids de W, la somme des parts de Nb, Ti, V et W étant comprise entre 2,0 et 7,0 % en poids. La composition selon l'invention peut être produite par fusion des matériaux de départ et coulée de la matière fondue dans un moule préfabriqué.
EP09744325.3A 2009-02-26 2009-10-13 Segment de piston Not-in-force EP2401532B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009010727A DE102009010727B3 (de) 2009-02-26 2009-02-26 Stahlgusswerkstoffzusammensetzung zur Herstellung von Kolbenringen und Zylinderlaufbuchsen
PCT/EP2009/007355 WO2010097105A1 (fr) 2009-02-26 2009-10-13 Composition d'acier pour produire des segments de piston et des chemises de cylindre

Publications (2)

Publication Number Publication Date
EP2401532A1 true EP2401532A1 (fr) 2012-01-04
EP2401532B1 EP2401532B1 (fr) 2017-08-16

Family

ID=41506518

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09744325.3A Not-in-force EP2401532B1 (fr) 2009-02-26 2009-10-13 Segment de piston

Country Status (9)

Country Link
US (1) US8506727B2 (fr)
EP (1) EP2401532B1 (fr)
JP (1) JP5497798B2 (fr)
KR (1) KR20110128269A (fr)
CN (1) CN102272490B (fr)
BR (1) BRPI0921528A2 (fr)
DE (1) DE102009010727B3 (fr)
PT (1) PT2401532T (fr)
WO (1) WO2010097105A1 (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009015008B3 (de) * 2009-03-26 2010-12-02 Federal-Mogul Burscheid Gmbh Kolbenringe und Zylinderlaufbuchsen
BR112014012557B1 (pt) * 2011-11-30 2019-03-19 Tenneco Inc. Anel de pistão formado de um ferro fundido, ferro fundido, método para fabricar um anel de pistão formado de ferro fundido e método para formar um ferro fundido
UA111115C2 (uk) 2012-04-02 2016-03-25 Ейкей Стіл Пропертіс, Інк. Рентабельна феритна нержавіюча сталь
EP2895637B1 (fr) * 2012-09-14 2016-11-23 Tata Steel Nederland Technology B.V. Produits d'acier renforcés de particules en tic à très haute résistance et faible densité avec module e amélioré et procédé de production dudit produit
CN103834872A (zh) * 2012-11-26 2014-06-04 天工爱和特钢有限公司 高耐磨性模具钢
CN104451361A (zh) * 2014-12-25 2015-03-25 常熟市瑞峰模具有限公司 乳液瓶生产用合金铸铁模具
CN104895695B (zh) * 2015-05-18 2017-09-19 宏远石油设备股份有限公司 一种柴油发动机气缸盖
CN105296870A (zh) * 2015-11-03 2016-02-03 合肥海源机械有限公司 叉车用液压油缸活塞杆制备方法
US9873928B2 (en) * 2016-03-15 2018-01-23 Federal-Mogul High strength cast iron for cylinder liners
WO2020136991A1 (fr) * 2018-12-25 2020-07-02 日鉄日新製鋼株式会社 Matériau en acier et composant
JP7336685B2 (ja) * 2018-12-25 2023-09-01 日本製鉄株式会社 調質熱処理用鋼材及び部品

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Also Published As

Publication number Publication date
DE102009010727B3 (de) 2011-01-13
JP2012518764A (ja) 2012-08-16
JP5497798B2 (ja) 2014-05-21
EP2401532B1 (fr) 2017-08-16
WO2010097105A1 (fr) 2010-09-02
PT2401532T (pt) 2017-10-17
US8506727B2 (en) 2013-08-13
CN102272490A (zh) 2011-12-07
US20110311391A1 (en) 2011-12-22
BRPI0921528A2 (pt) 2016-03-15
CN102272490B (zh) 2014-10-15
KR20110128269A (ko) 2011-11-29

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