EP1753887B1 - Composant moteur soumis a des contraintes elevees - Google Patents

Composant moteur soumis a des contraintes elevees Download PDF

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Publication number
EP1753887B1
EP1753887B1 EP05751295A EP05751295A EP1753887B1 EP 1753887 B1 EP1753887 B1 EP 1753887B1 EP 05751295 A EP05751295 A EP 05751295A EP 05751295 A EP05751295 A EP 05751295A EP 1753887 B1 EP1753887 B1 EP 1753887B1
Authority
EP
European Patent Office
Prior art keywords
wear
cam
engine component
subjected
tappet
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.)
Not-in-force
Application number
EP05751295A
Other languages
German (de)
English (en)
Other versions
EP1753887A1 (fr
Inventor
Ernst Strian
Stefan Birkner
Stefan Dorn
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.)
Schaeffler Technologies AG and Co KG
Original Assignee
Schaeffler Technologies AG and Co KG
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 Schaeffler Technologies AG and Co KG filed Critical Schaeffler Technologies AG and Co KG
Publication of EP1753887A1 publication Critical patent/EP1753887A1/fr
Application granted granted Critical
Publication of EP1753887B1 publication Critical patent/EP1753887B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/22—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces for producing castings from a slip
    • B22F3/225—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces for producing castings from a slip by injection molding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
    • B22F5/02—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of piston rings
    • 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
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C30/00—Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
    • C23C8/08—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
    • C23C8/24—Nitriding
    • C23C8/26—Nitriding of ferrous surfaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/12—Transmitting gear between valve drive and valve
    • F01L1/14—Tappets; Push rods
    • F01L1/143—Tappets; Push rods for use with overhead camshafts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/12—Transmitting gear between valve drive and valve
    • F01L1/14—Tappets; Push rods
    • F01L1/16—Silencing impact; Reducing wear
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/24—After-treatment of workpieces or articles
    • B22F2003/248—Thermal after-treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L2301/00—Using particular materials

Definitions

  • the invention relates to a tribologically and dynamically highly loaded engine component, which is designed as claimed on a sliding wear element of an internal combustion engine, such as valve clearance compensation element for a valve train or pump tappet for a high-pressure pump drive.
  • the tappet may be made of a group X210 tool steel.
  • the present invention seeks to inexpensively produce such components at the same time significantly improved wear behavior.
  • valve clearance compensation element designed as a bucket tappet cam follower, which is acted upon by a cam on its closed bottom, wherein the tappet and / or the cam of a wear-resistant alloyed tool steel of the mark DIN 1.3343 or X210CrW12 by powder metallurgy Injection molding is made.
  • the object is achieved in a pump tappet according to the invention by a pump tappet forming cam follower, which is acted upon by a cam, wherein the pump tappet and / or the cam of a wear-resistant alloyed tool steel of the DIN 1.3343 or X210CrW12 is made by powder metallurgical injection molding.
  • a steel of the brand DIN 1.3343 contains 0.80-1.10% C, 5.50-6.75% W, 1.70-2.20% V, 3.80-4.50% Cr, 4.50 -5.50% Mo and rest Fe.
  • a brand X210CrW12 steel is composed of 2.00-2.30% C, 0.10-0.40% Si, 0.30-0.60% Mn, 11.00-13.00% Cr, 0.60 -0.80% W, and balance Fe.
  • Powder metallurgy injection molding also known as metal injection molding (MIM)
  • MIM metal injection molding
  • the method is characterized in that fine metal powders in the range of 20 microns are mixed with organic binders to a homogeneous mass.
  • the volume fraction of the metal powder is usually more than 50%. It is thus obtained a mass that can be processed on injection molding machines analogous to the plastic processing.
  • injection molding process moldings are produced which already have all the typical geometric features of the finished component, but have a volume increased by the binder content.
  • the organic binders are then removed, depending on the binder system used either by thermal decomposition and evaporation or by solvent extraction.
  • the remaining porous shaped bodies are compacted by sintering under various shielding gases or under vacuum to form components with final geometric properties. The occurring linear shrinkage leads to final densities greater than 96%.
  • alloyed tool steel is to be interpreted broadly.
  • the group of tool steels includes stainless steels for the specialist high hardness, high level of wear and tear and high toughness, which are suitable for the treatment and processing of materials. You must also have a good thermal shock resistance.
  • tool steels are subdivided into cold work steels, hot work steels and high speed steels.
  • the microstructure of the blank consists of finely distributed wear-resistant carbides, which are used in a coordinated martensitic, sorbitic or pearlitic matrix. These carbides are of eminent importance for wear resistance.
  • the advantage of such a component made of an alloyed tool steel by powder metallurgical injection molding is, in addition to the near-net-shape production, in particular that its properties, and thus also its wear resistance, are constant over the entire component depth.
  • the tool steel is a cold work steel or a high-speed steel.
  • Cold work tool steels are alloyed tool steels for the manufacture of tools, in which the surface temperature of around 200 ° Celsius is generally not exceeded. In this temperature range, the steels have high hardness, good toughness and good cutting properties, as well as good resistance to impact, pressure and wear.
  • High speed steels are higher alloyed tool steels, which are mainly used for cutting materials at high cutting speeds.
  • the alloying elements chromium, cobalt, molybdenum, vanadium and tungsten or their special carbides and the heat treatment give high-speed steels high tempering resistance and hot hardness up to temperatures of 600 ° C.
  • the wear characteristics of the component can be further improved by a subsequent coating process. This could be done for example by PVD or CVD methods.
  • the component may also be subjected to an additional mechanical post-processing. This may be necessary in particular if, in individual cases, precisely defined geometrical dimensions must be maintained.
  • An engine component produced according to the invention may be connected to a connection structure by a joining method, such as, for example, gluing, soldering, welding, diffusion bonding or even caulking.
  • the single FIGURE shows a side view of a mechanical valve lifter for a valve train of an internal combustion engine, partially cut.
  • the mechanical bucket tappet 1 shown in the figure has a hollow cylindrical wall 2, which is closed at one end by a bottom 3.
  • the bottom 3 is provided with a survey 4, which with the end face of a shaft of a gas exchange valve 5 is in operative connection.
  • the bottom 3 is acted upon by a cam 6, which is arranged on a camshaft 7.
  • the tappet 1 is made of a highly wear-resistant high-speed steel by means of powder metallurgy injection molding.
  • the decisive advantages of such a tappet lie in its good wear resistance over the entire material cross-section. So there is no danger that with longer life a susceptibility to wear occurs.
  • the cam 6 which is also manufactured in the manner described above by powder metallurgy injection molding. This cam 6 can then be connected to the camshaft 7, for example by a diffusion process.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)

Claims (7)

  1. Composant de moteur soumis à des contraintes élevées du point de vue tribologique et dynamique, qui est réalisé sous forme d'élément de compensation du jeu des soupapes sollicité par une usure de glissement, pour une commande de soupapes d'un moteur à combustion interne, avec un suiveur de came réalisé sous forme de poussoir à coupelle (1) qui est sollicité sur son fond fermé (3) par une came (6), le poussoir à coupelle (1) et/ou la came (6) étant fabriqués en un acier à outils allié résistant à l'usure de la marque DIN 1.3343 ou X210CrW12, par moulage par injection métallurgique de poudre.
  2. Composant de moteur soumis à des contraintes élevées du point de vue tribologique et dynamique, qui est réalisé sous forme de poussoir de pompe sollicité par une usure de glissement, pour un entraînement de pompe haute pression d'un moteur à combustion interne, avec un suiveur de came réalisé sous forme de poussoir de pompe qui est sollicité par une came, le poussoir de pompe et/ou la came étant fabriqués en un acier à outils allié résistant à l'usure de la marque DIN 1.3343 ou X210CrW12, par moulage par injection métallurgique de poudre.
  3. Composant de moteur selon la revendication 1 ou 2, caractérisé en ce que l'acier à outils est un acier de travail à froid ou un acier rapide.
  4. Composant de moteur selon la revendication 1 ou 2, caractérisé en ce qu'il est soumis à un traitement thermique ultérieur, comme un trempage et un recuit, un durcissement au laser ou une nitruration.
  5. Composant de moteur selon la revendication 1 ou 2, caractérisé en ce qu'il est soumis à un procédé de revêtement.
  6. Composant de moteur selon la revendication 1 ou 2, caractérisé en ce qu'il est soumis à un post-usinage mécanique.
  7. Composant de moteur selon la revendication 1 ou 2, caractérisé en ce qu'il est connecté à une construction de raccordement par un procédé d'assemblage comme un collage, un brasage, un soudage, une connexion par diffusion ou un matage.
EP05751295A 2004-06-09 2005-05-12 Composant moteur soumis a des contraintes elevees Not-in-force EP1753887B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004028221A DE102004028221A1 (de) 2004-06-09 2004-06-09 Hochbeanspruchtes Motorenbauteil
PCT/EP2005/005109 WO2005121383A1 (fr) 2004-06-09 2005-05-12 Composant moteur soumis a des contraintes elevees

Publications (2)

Publication Number Publication Date
EP1753887A1 EP1753887A1 (fr) 2007-02-21
EP1753887B1 true EP1753887B1 (fr) 2011-10-05

Family

ID=34970195

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05751295A Not-in-force EP1753887B1 (fr) 2004-06-09 2005-05-12 Composant moteur soumis a des contraintes elevees

Country Status (4)

Country Link
EP (1) EP1753887B1 (fr)
AT (1) ATE527388T1 (fr)
DE (1) DE102004028221A1 (fr)
WO (1) WO2005121383A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108955975A (zh) * 2016-03-02 2018-12-07 哈尔滨工程大学 一种标定气阀杆动态应变计的装置

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DE2526656A1 (de) 1975-06-14 1976-12-23 Wizemann & Co J Ventilstoessel
JPS5813603B2 (ja) 1978-01-31 1983-03-15 トヨタ自動車株式会社 軸部材とその嵌合部材の接合法
JPS5918463B2 (ja) * 1980-03-04 1984-04-27 トヨタ自動車株式会社 耐摩耗性焼結合金およびその製法
DE3239325A1 (de) 1982-10-23 1984-04-26 Feldmühle AG, 4000 Düsseldorf Ventilstoessel fuer einen verbrennungsmotor
GB2153850B (en) 1984-02-07 1987-08-12 Nippon Piston Ring Co Ltd Method of manufacturing a camshaft
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JP2957180B2 (ja) * 1988-04-18 1999-10-04 株式会社リケン 耐摩耗性鉄基焼結合金およびその製造方法
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Also Published As

Publication number Publication date
DE102004028221A1 (de) 2005-12-29
EP1753887A1 (fr) 2007-02-21
ATE527388T1 (de) 2011-10-15
WO2005121383A1 (fr) 2005-12-22

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