EP2439307B1 - Procédé de revêtement d'un composant développé en tant que composant d'injection de carburant et agencé en relation active avec du carburant, ainsi qu'agencement des deux composants - Google Patents

Procédé de revêtement d'un composant développé en tant que composant d'injection de carburant et agencé en relation active avec du carburant, ainsi qu'agencement des deux composants Download PDF

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Publication number
EP2439307B1
EP2439307B1 EP11180417.5A EP11180417A EP2439307B1 EP 2439307 B1 EP2439307 B1 EP 2439307B1 EP 11180417 A EP11180417 A EP 11180417A EP 2439307 B1 EP2439307 B1 EP 2439307B1
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EP
European Patent Office
Prior art keywords
component
fuel
components
coating
oxide layer
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.)
Active
Application number
EP11180417.5A
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German (de)
English (en)
Other versions
EP2439307A1 (fr
Inventor
Andreas Ellenschlaeger
Karl-Otto Englert
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP2439307A1 publication Critical patent/EP2439307A1/fr
Application granted granted Critical
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Classifications

    • 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
    • C23C8/10—Oxidising
    • C23C8/12—Oxidising using elemental oxygen or ozone
    • C23C8/14—Oxidising of ferrous surfaces
    • 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
    • C23C8/10—Oxidising
    • 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
    • C23C8/10—Oxidising
    • C23C8/12—Oxidising using elemental oxygen or ozone
    • 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
    • C23C8/80—After-treatment
    • 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
    • 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
    • F02M2200/9038—Coatings

Definitions

  • the invention relates to a method for coating a component, which is arranged in operative connection with fuel and designed as a fuel injection component, and an arrangement of two components.
  • the two components are arranged one another with a guide play to each other.
  • WO 03/002859 discloses an internal combustion engine, characterized in that an with an air-fuel mixture to be combusted and / or with engine oil coming into contact surface of at least one component of the combustion chamber and / or an adjoining space at least partially has a catalytic Vanadiumoxidsbe slaughterung for the oxidation of coking residues.
  • FIG. 12 shows a fuel pump for pressurizing fuel to feed the fuel to a fuel injector, with a hardened layer comprising a slip device of an iron group part with an oxide layer.
  • the present invention seeks to provide a method for coating a component arranged in operative connection with fuel, designed as a fuel injection component considered even with relatively close management game between two components over the service life of a component reduces the adhesion or the formation of deposits or aging products.
  • This object is achieved in a method for coating a component with the features of claim 1.
  • the invention is based on the idea to form an anti-adhesion coating on a component which is formed as an oxide layer. In this case, the catalytic effect of the component surface to form the deposits is prevented by the oxide layer.
  • the oxide layer can be formed on a component by exposing the component in an oxygen-containing atmosphere or in water vapor. Exposure occurs at an elevated temperature higher than 50 ° Celsius. As a result, the formation of the oxide layer can be targeted and accelerated, so that the production time for the component can be reduced. In addition, the oxide layer can be reinforced again if, during or after the formation of the oxide layer, this water vapor is exposed.
  • the method according to the invention can be applied to components which have a chromium-containing steel or consist of a chromium-containing steel.
  • the free chromium binds with oxygen and the iron in the oxygen in each case a compound.
  • the reaction of the iron and chromium passivates the component. This means that the possibly catalytic support of the chemical elements is hindered by the chemical reactions of the deposit formation on the component surface.
  • Such an oxide layer is therefore comparable to a barrier layer.
  • the material for the component is 100CR6 steel.
  • the oxide layer is formed in the form of loops after a machining surface treatment of the component.
  • the machining surface treatment forms a kind of basis for the oxide layer, wherein the machining of the component simultaneously forms the component with its desired dimensions.
  • the invention also encompasses an arrangement of two components in which at least one component has an oxide layer produced by the method according to the invention.
  • the two components of the arrangement are arranged to be movable relative to one another and concentric, and that a guide gap between 1.0 ⁇ m and 5.5 ⁇ m is formed between the two components.
  • the thickness of the oxide layer on the at least one component of the arrangement is up to a maximum of 2 ⁇ m.
  • the arrangement is preferably used as part of a fuel injector, but it is not limited to fuel injectors. Further advantages, features and details of the invention will become apparent from the following descriptions of preferred embodiments and from the drawing.
  • FIG. 1 an arrangement 10 of two components 1, 2 is shown.
  • the arrangement 10 is in particular components 1, 2 of a fuel injector 100, which is preferably part of a fuel injection system in a so-called common-rail system.
  • a fuel injector 100 which is preferably part of a fuel injection system in a so-called common-rail system.
  • an operating pressure of more than 1,500 bar, preferably more than 2,000 bar prevail in the common rail system.
  • the fuel injection system or the fuel injector 100 is operated with fuel to which at least a certain amount of biodiesel, for example in a range of about 20%, is admixed.
  • the component 1 is a cylindrical element in the form of a valve needle that can be moved up and down in a longitudinal axis 3 in the direction of the double arrow 4.
  • the component 2 is an injector housing of the fuel injector 100 or another component in which the valve needle is axially displaceable. It is only essential that the component 1 is arranged in the component 2 such that between the two components 1, 2 in the embodiment radially encircling guide gap 5 is formed. In this case, the size of the guide gap 5 is preferably (in the example of valve needle and guide bore 12) between 1.0 ⁇ m and 5.5 ⁇ m.
  • the component 1 has a first oxide layer 11 on its outer circumference, and the second component 2 has a second oxide layer 13 on the wall of its guide bore 12.
  • the components 1, 2 consist of a chromium-containing steel, in particular of 100CR6 steel.
  • the method for forming the two oxide layers 11, 13 on the components 1, 2 will now be described with reference to FIGS Fig. 2 explained in more detail:
  • the component 1.2 is produced by machining or made to measure. This may in particular be a grinding process in which, for example, the outer diameter of the component 1 in the region of its (later) oxide layer 11 or the bore diameter of the component 2 in the region of the guide bore 12 is manufactured or brought to a specific nominal dimension.
  • the thus manufactured component 1, 2 is exposed in a second process step 30 of an oxygen-containing atmosphere. As a result, the component 1, 2 is passivated.
  • the oxide layer 11, 13 is formed on the component surfaces of the two components 1, 2, in that the free chromium and the iron enter into a bond with the oxygen of the oxygen atmosphere.
  • the second process step 30 takes place at a temperature of more than 50 ° C. above the ambient temperature in order to accelerate or intensify the oxidation process or the formation of the oxide layers 11, 13.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)

Claims (4)

  1. Procédé de revêtement d'un composant (1, 2) disposé en liaison fonctionnelle avec du carburant, réalisé sous forme de composant d'injection de carburant et fabriqué à partir d'un acier contenant du chrome, dans lequel le revêtement est effectué après la fabrication du composant (1, 2) sur une surface du composant (1, 2), en exposant le composant, à une température élevée supérieure à 50°C à une atmosphère contenant de l'oxygène ou à de la vapeur d'eau, de telle sorte que le revêtement soit réalisé sous forme de couche d'oxyde (11, 13), et agisse en tant que revêtement anti-adhérant contre des constituants de vieillissement ou de dépôt du carburant et qu'une action catalytique de la surface du composant soit empêchée par la couche d'oxyde.
  2. Procédé selon la revendication 1, caractérisé en ce que l'on utilise en tant que matériau pour le composant (1, 2) de l'acier 100Cr6.
  3. Procédé selon l'une quelconque des revendications 1 ou 2, caractérisé en ce que la couche d'oxyde (11, 13) est réalisée sous forme de meulage après un traitement de surface par enlèvement de copeaux du composant (11, 13).
  4. Injecteur de carburant comprenant un composant (1, 2) qui est fabriqué selon l'une quelconque des revendications 1 à 3.
EP11180417.5A 2010-10-11 2011-09-07 Procédé de revêtement d'un composant développé en tant que composant d'injection de carburant et agencé en relation active avec du carburant, ainsi qu'agencement des deux composants Active EP2439307B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102010042249A DE102010042249A1 (de) 2010-10-11 2010-10-11 Verfahren zum Beschichten eines in Wirkverbindung mit Kraftstoff angeordneten, als Kraftstoffeinspritzkomponente ausgebildeten Bauteils und Anordnung zweier Bauteile

Publications (2)

Publication Number Publication Date
EP2439307A1 EP2439307A1 (fr) 2012-04-11
EP2439307B1 true EP2439307B1 (fr) 2018-02-21

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EP11180417.5A Active EP2439307B1 (fr) 2010-10-11 2011-09-07 Procédé de revêtement d'un composant développé en tant que composant d'injection de carburant et agencé en relation active avec du carburant, ainsi qu'agencement des deux composants

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EP (1) EP2439307B1 (fr)
DE (1) DE102010042249A1 (fr)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10130673A1 (de) * 2001-06-28 2003-01-23 Volkswagen Ag Verbrennungskraftmaschine
US6648988B2 (en) * 2001-08-17 2003-11-18 Exxonmobil Research And Engineering Company Furnace run length extension by fouling control
JP2003148294A (ja) * 2001-11-12 2003-05-21 Hitachi Ltd 燃料ポンプ及び筒内噴射エンジン

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
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Publication number Publication date
EP2439307A1 (fr) 2012-04-11
DE102010042249A1 (de) 2012-04-12

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