EP1225324B1 - Running surface on a cylinder - Google Patents

Running surface on a cylinder Download PDF

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Publication number
EP1225324B1
EP1225324B1 EP02000872A EP02000872A EP1225324B1 EP 1225324 B1 EP1225324 B1 EP 1225324B1 EP 02000872 A EP02000872 A EP 02000872A EP 02000872 A EP02000872 A EP 02000872A EP 1225324 B1 EP1225324 B1 EP 1225324B1
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EP
European Patent Office
Prior art keywords
running surface
cylindrical
wear layer
partial
cylindrical running
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.)
Expired - Lifetime
Application number
EP02000872A
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German (de)
French (fr)
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EP1225324A2 (en
EP1225324A3 (en
Inventor
Herbert MÖDING
Manfred Laudenklos
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KS Huayu Alutech GmbH
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KS Aluminium Technologie GmbH
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Application filed by KS Aluminium Technologie GmbH filed Critical KS Aluminium Technologie GmbH
Priority to EP09167884.7A priority Critical patent/EP2112359B2/en
Publication of EP1225324A2 publication Critical patent/EP1225324A2/en
Publication of EP1225324A3 publication Critical patent/EP1225324A3/en
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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
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/18—Other cylinders
    • F02F1/20—Other cylinders characterised by constructional features providing for lubrication
    • 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
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
    • 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
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
    • 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
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
    • C23C4/14—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying for coating elongate material
    • C23C4/16—Wires; Tubes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B77/00—Component parts, details or accessories, not otherwise provided for
    • F02B77/02—Surface coverings of combustion-gas-swept parts

Definitions

  • the invention relates to a cylindrical running surface, for example a cylinder liner or a cylinder bore, made of a light metal alloy with a defined Verkrall Quilt a not yet coated cylindrical tread on which a wear layer is adherent applied.
  • Such a cylindrical tread is for example from the article by Hans Rininger "flame-sprayed plain bearings" from " The Machine Market “(1954, No. 7, page 6 ) known.
  • sawtooth punctures or threads are introduced with longitudinal grooves in the cylindrical tread to ensure a torsion-resistant adhesion.
  • this type of pretreatment has proved to be unsuitable.
  • a wear layer of an Fe-based alloy with the light metal alloy Additives such as C, Mn, Mo, V, etc., an Al-based alloy with additives such as Si, Fe, Cu, Ni, etc., or a copper / nickel alloy is applied.
  • the wear layer is preferably applied by welding, plasma spraying, flame spraying or high-speed jet spraying.
  • the light alloy to be coated is roughened by a blasting process (see, for example, US Pat GB-A-408 067 ).
  • this type of pretreatment is very complicated due to the beam systems to be used and creates only an undefined surface structure that causes an uneven stress introduction into the wear layer, with the result that not sufficient adhesion of the wear layer is guaranteed in all load cases.
  • the present invention is therefore based on the object to provide a remedy for the above-described problems.
  • This Verkrall Scheme first leads to a defined increase in the adhesive surface of the tread to be coated. In addition, it comes in the subsequent coating process in the tips to a higher energy load, resulting in part to a reproducible diffusion compensation of the wear layer with the base material. Also, at the tips of the Verkrall Design to melting, which further improve the adhesion of the wear layer.
  • the distance to the surface to be coated is so small that no maximum acceleration can be achieved in the coating medium, because of the low kinetic energy, the adhesion is reduced.
  • optimum adhesion is achieved when it hits the surface to be coated vertically.
  • the angle of incidence of the media jet is significantly less than 90 °, resulting in low adhesion of the coating medium in this zone.
  • the macroscopic surface structure produced in such a targeted manner can be formed in the form of preferably grooves extending in the circumferential direction or else by helical thread-like profiles. Furthermore, the adhesion in the radial and / or axial direction can be improved by undercuts.
  • FIG. 1 shows a longitudinal section through an inventively designed cylindrical tread.
  • the cylindrical tread 1 consists of a known aluminum alloy.
  • a Verkrall Design 2 in the present embodiment, a threaded profile were rotated in a known manner.
  • the Verkrall Designen 2 invention can also be introduced in various other ways, such as spinning, cutting, milling, etc. in the cylindrical tread 1.
  • the light undercuts 4 shown in the present embodiment can be attached to the Verkrall Modellen 2 by a subsequent forming process.
  • FIG. 2 A schematic representation of the machining process for applying one of the wear layer 3 through the media jet 5 shows FIG. 2 ,
  • the Verkrall Siemens 2 ensures that the angle of incidence of the media beam 5 is nearly 90 °. It shows FIG. 3 a first embodiment of the Verkrall Design 2, which ensures this defined angle of incidence.
  • the alignment of the partial flanks 6 is constant over the entire cylindrical tread 1, which results in that the media jet 5 is moved translationally along the longitudinal axis of the cylindrical tread 1 during the coating process (see dotted lines).
  • FIG. 4 shows a Verkrall Cook 2, the partial edges 6 in the longitudinal direction of the cylindrical tread 1 have a steadily decreasing angle of attack a.
  • a Verkrall Quilt 2 can be prepared in a known manner, for example by a CNC machine.
  • the media jet 5 then needs to perform as shown only a rotational movement, which in turn leads to a simplification of the machining process.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Plasma & Fusion (AREA)
  • Physics & Mathematics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Coating By Spraying Or Casting (AREA)
  • Physical Vapour Deposition (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)

Description

Die Erfindung betrifft eine zylindrische Lauffläche, beispielsweise einer Zylinderlaufbuchse oder einer Zylinderbohrung, aus einer Leichtmetall-Legierung mit einer definierten Verkrallstruktur einer noch nicht beschichteten zylindrischen Lauffläche, auf die eine Verschleißschicht haftfest aufbringbar ist.The invention relates to a cylindrical running surface, for example a cylinder liner or a cylinder bore, made of a light metal alloy with a defined Verkrallstruktur a not yet coated cylindrical tread on which a wear layer is adherent applied.

Eine derartige zylindrische Lauffläche ist beispielsweiseaus Dem Aufsatz von Hans Rininger "Flammgespritzte Gleitlager" aus " Der Machinenmarkt" (1954, Nr. 7, Seite 6 ) bekannt. Dabei sind in die zylindrische Lauffläche Sägezahn-Einstiche oder Gewinde mit Längsnuten eingebracht, um eine verdrehsichere Haftung zu gewährleisten. Insbesondere bei Verfahren zur Aufbringung einer Verschleißschicht mit einer Fokussierung und der damit verbundenen hohen lokalen Wärmeeinbringung hat sich diese Art der Vorbehandlung als nicht geeignet erwiesen.Such a cylindrical tread is for example from the article by Hans Rininger "flame-sprayed plain bearings" from " The Machine Market "(1954, No. 7, page 6 ) known. In this case, sawtooth punctures or threads are introduced with longitudinal grooves in the cylindrical tread to ensure a torsion-resistant adhesion. In particular, in processes for applying a wear layer with a focus and the associated high local heat input, this type of pretreatment has proved to be unsuitable.

Um den hohen Beanspruchungen an die Verschleißfestigkeit gerecht zu werden, ist es darüberhinaus bekannt, die Verschleißfestigkeit zylindrischer Laufflächen, beispielsweise des Kurbelgehäuses eines Verbrennungsmotors, zumindest teilweise dadurch zu erhöhen, daß auf die Leichtmetall-Legierung beispielsweise eine Verschleißschicht aus einer Fe-Basis-Legierung mit Zusätzen wie z.B. C, Mn, Mo, V etc., einer Al-Basis-Legierung mit Zusätzen wie z.B. Si, Fe, Cu, Ni etc.oder einer Kupfer-/ Nickel-Legierung aufgebracht wird. Die Verschleißschicht wird dabei vorzugsweise durch Aufschweißen, Plasmaspritzen, Flammspritzen oder Hochgeschwindigkeits-Jet-Spritzen aufgebracht. Um bei den ständig wechselnden mechanischen Belastungen dieser Schicht eine Haftung zu gewährleisten, wird dabei die zu beschichtende Leichtmetall-Legierung durch einen Strahlvorgang aufgerauht (s.z.B. GB-A-408 067 ). Diese Art der Vorbehandlung ist jedoch aufgrund der einzusetzenden Strahlsysteme sehr aufwendig und schafft lediglich eine undefinierte Oberflächenstruktur, die eine ungleichmäßige Spannungseinleitung in die Verschleißschicht verursacht, was zur Folge hat, daß nicht in allen Belastungsfällen eine ausreichende Haftung der Verschleißschicht gewährleistet ist.In order to meet the high stresses on the wear resistance, it is also known to increase the wear resistance of cylindrical running surfaces, for example, the crankcase of an internal combustion engine, at least partially by the fact that, for example, a wear layer of an Fe-based alloy with the light metal alloy Additives such as C, Mn, Mo, V, etc., an Al-based alloy with additives such as Si, Fe, Cu, Ni, etc., or a copper / nickel alloy is applied. The wear layer is preferably applied by welding, plasma spraying, flame spraying or high-speed jet spraying. In order to ensure adhesion to the constantly changing mechanical stresses of this layer, the light alloy to be coated is roughened by a blasting process (see, for example, US Pat GB-A-408 067 ). However, this type of pretreatment is very complicated due to the beam systems to be used and creates only an undefined surface structure that causes an uneven stress introduction into the wear layer, with the result that not sufficient adhesion of the wear layer is guaranteed in all load cases.

Der vorliegenden Erfindung liegt daher die Aufgabe zugrunde, eine Abhilfe für die vorstehend geschilderten Probleme zu schaffen.The present invention is therefore based on the object to provide a remedy for the above-described problems.

Diese Aufgabe wird durch eine zylindrische Lauffläche gemäß Anspruch 1 gelöst.This object is achieved by a cylindrical tread according to claim 1.

Diese Verkrallstruktur führt zunächst zu einer definierten Vergrößerung der Haftfläche der zu beschichtenden Lauffläche. Außerdem kommt es beim nachfolgenden Beschichtungsprozeß in den Spitzen zu einer höheren Energiebelastung, was partiell zu einem reproduzierbaren Diffusionsausgleich der Verschleißschicht mit dem Grundwerkstoff führt. Auch kommt es an den Spitzen der Verkrallstruktur zu Anschmelzungen, die die Haftung der Verschleißschicht noch weiter verbessern.This Verkrallstruktur first leads to a defined increase in the adhesive surface of the tread to be coated. In addition, it comes in the subsequent coating process in the tips to a higher energy load, resulting in part to a reproducible diffusion compensation of the wear layer with the base material. Also, at the tips of the Verkrallstruktur to melting, which further improve the adhesion of the wear layer.

Bei einer Beschichtungsanlage, bei der das Plasma umgelenkt wird, ist der Abstand zur zu beschichteten Oberfläche speziell bei Durchmessern von 60-120 mm so gering, daß im Beschichtungsmedium keine maximale Beschleunigung erreicht werden kann, aufgrund der niedrigen kinetischen Energie ist die Haftung reduziert. Bei Plasma oder Flammspritzvorgängen wird eine optimale Haftung beim senkrechten Auftreffen auf die zu beschichteten Oberfläche erreicht. Bei Beschichtungsverfahren ohne Umlenkung des Plasmas wird in Zylindern mit Durchmesser von 60-120 mm im unteren Zylinderbereich der Auftreffwinkel des Medienstrahls deutlich kleiner 90°, hieraus resultiert eine geringe Haftung des Beschichtungsmediums in dieser Zone.In a coating system in which the plasma is deflected, the distance to the surface to be coated, especially at diameters of 60-120 mm, is so small that no maximum acceleration can be achieved in the coating medium, because of the low kinetic energy, the adhesion is reduced. In the case of plasma or flame spraying processes, optimum adhesion is achieved when it hits the surface to be coated vertically. In coating processes without deflection of the plasma, in cylinders with a diameter of 60-120 mm in the lower cylinder region, the angle of incidence of the media jet is significantly less than 90 °, resulting in low adhesion of the coating medium in this zone.

Durch Anpassung der Oberflächenstruktur an den Strahlwinkel ist es möglich, zonenweise verbindungsähnliche Strukturen zu erzeugen. Daher ist es besonders vorteilhaft für den Beschichtungsprozeß, daß zu einer Beschichtungsdüse gerichtete Teilflanken der Verkrallstruktur derart angepaßt sind, daß der Auftreffwinkel des Medienstrahls des Beschichtungswerkzeuges nahezu 90° beträgt.By adapting the surface structure to the beam angle, it is possible to produce zone-like connection-like structures. Therefore, it is particularly advantageous for the coating process that directed to a coating nozzle partial edges of the Verkrallstruktur are adapted so that the angle of incidence of the media jet of the coating tool is nearly 90 °.

Die derart gezielt hergestellte makroskopische Oberflächenstruktur kann dabei in Form von vorzugsweise in Umfangsrichtung erstreckten Nuten oder auch von spiralförmigen gewindeähnlichen Profilen gebildet sein. Des weiteren kann die Haftung in radialer und/oder axialer Richtung durch Hinterschneidungen verbessert werden.The macroscopic surface structure produced in such a targeted manner can be formed in the form of preferably grooves extending in the circumferential direction or else by helical thread-like profiles. Furthermore, the adhesion in the radial and / or axial direction can be improved by undercuts.

Es hat sich als vorteilhaft erwiesen die mit Verkrallstrukturen versehene Bohrungsinnenkontur durch Aufschweißen, Plasmaspritzen, Flammspritzen oder Hochgeschwindigkeits-Jet-Spritzen herzustellen. Durch elektromagnetische Fokussierung des Medienstrahls wird die Energie (Pinch-Effekt) pro Flächeneinheit signifikant erhöht, was zu einer Verbesserung der Schichthaftung führt.It has proved to be advantageous to produce the bore inner contour provided with claw structures by means of welding, plasma spraying, flame spraying or high-speed jet spraying. By electromagnetic focusing of the media beam is the Energy (pinch effect) per unit area significantly increased, which leads to an improvement in the layer adhesion.

Die Erfindung wird anhand der nachfolgenden Zeichnung beschrieben, hierin zeigt:

Figur 1
eine fotografische Darstellung eines Längsschnitts durch eine erfindungsgemäß ausgebildete Lauffläche,
Figur 2
eine schematische Darstellung eines Bearbeitungsvorganges einer Bohrungsinnekontur,
Figur 3
eine vergößerte schematische Darstellung nach Figur 2 mit einer ersten Ausführungsform der Verkrallstruktur, und
Figur 4
eine vergößerte schematische Darstellung nach Figur 2 mit einer zweiten Ausführungsform der Verkrallstruktur,
The invention will be described with reference to the following drawing, in which:
FIG. 1
a photographic representation of a longitudinal section through an inventively designed tread,
FIG. 2
a schematic representation of a machining operation of a bore inner contour,
FIG. 3
an enlarged schematic representation after FIG. 2 with a first embodiment of the Verkrallstruktur, and
FIG. 4
an enlarged schematic representation after FIG. 2 with a second embodiment of the claw structure,

Figur 1 zeigt einen Längsschnitt durch eine erfindungsgemäß ausgebildete zylindrische Lauffläche. FIG. 1 shows a longitudinal section through an inventively designed cylindrical tread.

Die zylindrische Lauffläche 1 besteht aus einer an sich bekannten Aluminium-Legierung. In die Lauffläche 1 wurden auf bekannte Weise eine Verkrallstruktur 2, im vorliegenden Ausführungsbeispiel ein Gewindeprofil gedreht. Es sollte deutlich sein, daß die erfindungsgemäßen Verkrallstrukturen 2 auch auf verschiedene andere Weise, wie Drückwalzen, Schneiden, Fräsen etc. in die zylindrische Lauffläche 1 eingebracht werden können. Des weiteren können durch einen nachfolgenden Umformprozeß die im vorliegenden Ausführungsbeispiel dargestellte leichten Hinterschneidungen 4 an den Verkrallstrukturen 2 angebracht werden.The cylindrical tread 1 consists of a known aluminum alloy. In the tread 1 a Verkrallstruktur 2, in the present embodiment, a threaded profile were rotated in a known manner. It should be clear that the Verkrallstrukturen 2 invention can also be introduced in various other ways, such as spinning, cutting, milling, etc. in the cylindrical tread 1. Furthermore, the light undercuts 4 shown in the present embodiment can be attached to the Verkrallstrukturen 2 by a subsequent forming process.

Nachfolgend wurde durch Plasmaspritzen eine Verschleißschicht 3 auf der zylindrischen Lauffläche 1 aufgebracht. Deutlich zu erkennen ist die Verbindung im Bereich des Gewindeprofils 2.Subsequently, a wear layer 3 was applied to the cylindrical tread 1 by plasma spraying. Clearly visible is the connection in the area of the thread profile 2.

Der kostenaufwendige Strahlvorgang zur Aufrauhung konnte im vorliegenden Beispiel komplett entfallen. Durch die erfindungsgemäße Ausgestaltung der Verkrallstruktur, die einen Auftreffwinkel von nahezu 90° des Medienstrahls auf die Teilflanken 6 (s. Fig. 3 und 4) des Gewindeprofils blieb dieses auch nach dem Aufbringen der Verschleißschicht durch Plasmaspritzen im wesentlichen erhalten, da eine definierte Wärmeeinbringung erfolgen konnte.The costly blasting process for roughening was completely eliminated in the present example. Due to the inventive design of the Verkrallstruktur that an angle of incidence of nearly 90 ° of the media beam on the partial edges 6 (s. 3 and 4 ) of the thread profile remained this even after the application of the wear layer by plasma spraying essentially obtained, since a defined heat input could occur.

Eine schematische Darstellung des Bearbeitungsvorganges zum Aufbringen einer der Verschleißschicht 3 durch den Medienstrahl 5 zeigt Figur 2. Die Verkrallstruktur 2 sorgt dabei dafür, daß der Auftreffwinkel des Medienstrahls 5 nahezu 90° beträgt. Dabei zeigt Figur 3 eine erste Ausführungsform der Verkrallstruktur 2, die diesen definierten Auftreffwinkel gewährleistet. Die Ausrichtung der Teilflanken 6 ist dabei über die gesamte zylindrische Lauffläche 1 gleichbleibend, was dazu führt, daß während des Beschichtungsvorganges der Medienstrahl 5 translatorisch entlang der Längsachse der zylindrischen Lauffläche 1 bewegt wird (siehe strichpunktierte Linien).A schematic representation of the machining process for applying one of the wear layer 3 through the media jet 5 shows FIG. 2 , The Verkrallstruktur 2 ensures that the angle of incidence of the media beam 5 is nearly 90 °. It shows FIG. 3 a first embodiment of the Verkrallstruktur 2, which ensures this defined angle of incidence. The alignment of the partial flanks 6 is constant over the entire cylindrical tread 1, which results in that the media jet 5 is moved translationally along the longitudinal axis of the cylindrical tread 1 during the coating process (see dotted lines).

Figur 4 zeigt eine Verkrallstruktur 2, deren Teilflanken 6 in Längsrichtung der zylindrischen Lauffläche 1 einen sich stetig veringerenden Anstellwinkel a aufweisen. Eine derartige Verkrallstruktur 2 kann auf bekannte Weise beispielsweise durch eine CNC-Maschine hergestellt werden. Der Medienstrahl 5 braucht dann wie dargestellt lediglich eine rotatorische Bewegung auszuführen, was wiederum zu einer Vereinfachung des Bearbeitungsvorganges führt. FIG. 4 shows a Verkrallstruktur 2, the partial edges 6 in the longitudinal direction of the cylindrical tread 1 have a steadily decreasing angle of attack a. Such a Verkrallstruktur 2 can be prepared in a known manner, for example by a CNC machine. The media jet 5 then needs to perform as shown only a rotational movement, which in turn leads to a simplification of the machining process.

Claims (6)

  1. Cylindrical running surface for a crankcase of an internal combustion engine, made of a light metal alloy with radial gripping structures (2) formed in the running surface (1), each partial flank (6) of the gripping structure being designed such that the partial flanks (6) are inclined with respect to a longitudinal axis of the cylindrical running surface (1) so that a profile similar to a thread is formed, and with a metal anti-wear layer (3) applied on the running surface (1) in a firmly adhering manner, characterized in that the running surface is made of an aluminum alloy and the anti-wear layer (3) is made of
    - an iron-based alloy with the addition of carbon, manganese, molybdenum, and/or vanadium,
    - an aluminum-based alloy with the addition of iron, copper or nickel, or
    - a copper-nickel alloy,
    and the partial flanks (6) of the gripping structures (2) have a constantly decreasing angle of inclination α in the longitudinal direction of the cylindrical running surface (1).
  2. Cylindrical running surface of claim 1, characterized in that the surface structure has undercuts.
  3. Cylindrical running surface of one of claims 1 and 2, characterized in that a defined gripping structure is formed in the running surface in the axial direction.
  4. Method for manufacturing a cylindrical running surface (1) of one of claims 1 to 3, wherein a gripping structure (2) in the form of a profile similar to a thread is formed in the running surface (1) of the cylinder bore and wherein an anti-wear layer (3) is then applied onto the running surface, characterized in that the partial flanks (6) of the gripping structure (2) are formed with an continuous decreasing angle of inclination α in the longitudinal direction of the cylindrical running surface (1).
  5. Method for manufacturing a cylindrical running surface of claim 4, characterized in that the anti-wear layer (3) is applied by means of a medium jet of a coating nozzle, the coating nozzle being directed to a partial flank (6) of the gripping structure (2) under a jet angle of 90°.
  6. Method of claim 4 or 5, characterized in that the medium jet is focussed by means of electromagnetic fields.
EP02000872A 2001-01-20 2002-01-15 Running surface on a cylinder Expired - Lifetime EP1225324B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP09167884.7A EP2112359B2 (en) 2001-01-20 2002-01-15 Running surface on a cylinder

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10102654 2001-01-20
DE10102654 2001-01-20

Related Child Applications (1)

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EP09167884.7A Division EP2112359B2 (en) 2001-01-20 2002-01-15 Running surface on a cylinder

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EP1225324A2 EP1225324A2 (en) 2002-07-24
EP1225324A3 EP1225324A3 (en) 2003-03-26
EP1225324B1 true EP1225324B1 (en) 2009-10-14

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EP09167884.7A Expired - Lifetime EP2112359B2 (en) 2001-01-20 2002-01-15 Running surface on a cylinder
EP02000872A Expired - Lifetime EP1225324B1 (en) 2001-01-20 2002-01-15 Running surface on a cylinder

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DE (1) DE50213911D1 (en)
ES (2) ES2334770T3 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010016745A1 (en) * 2010-05-03 2011-11-03 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Pretreatment method for formation of grooves in running surface of cylinder crankcase used in engine, involves using rotatable tool that radiates high energy beam onto running surface of cylinder piston at different angles to form grooves
EP2307162B1 (en) 2008-08-05 2017-08-30 Martinrea Honsel Germany GmbH Method and tool for producing a surface having a predetermined roughness
US9863030B2 (en) 2015-03-02 2018-01-09 GM Global Technology Operations LLC Stress relief of mechanically roughened cylinder bores for reduced cracking tendency
DE102016116815A1 (en) 2016-09-08 2018-03-08 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Process for coating a cylinder of an internal combustion engine and cylinder for an internal combustion engine

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DE102016116815A1 (en) 2016-09-08 2018-03-08 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Process for coating a cylinder of an internal combustion engine and cylinder for an internal combustion engine

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EP2112359B1 (en) 2013-04-03
EP1225324A2 (en) 2002-07-24
ES2411477T5 (en) 2022-03-24
EP2112359A1 (en) 2009-10-28
ES2411477T3 (en) 2013-07-05
ES2334770T3 (en) 2010-03-16
EP2112359B2 (en) 2021-10-06
EP1225324A3 (en) 2003-03-26

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