EP2112359B2 - Running surface on a cylinder - Google Patents

Running surface on a cylinder Download PDF

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Publication number
EP2112359B2
EP2112359B2 EP09167884.7A EP09167884A EP2112359B2 EP 2112359 B2 EP2112359 B2 EP 2112359B2 EP 09167884 A EP09167884 A EP 09167884A EP 2112359 B2 EP2112359 B2 EP 2112359B2
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EP
European Patent Office
Prior art keywords
running surface
spraying
cylinder
coating
cylinder bore
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EP09167884.7A
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German (de)
French (fr)
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EP2112359A1 (en
EP2112359B1 (en
Inventor
Herbert Dr. Möding
Manfred Laudenklos
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KS Huayu Alutech GmbH
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KS Huayu Alutech GmbH
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    • 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 method for producing a cylindrical running surface.
  • a cylindrical running surface is, for example, from the article from Hans Rininger "Flame-sprayed plain bearings” from “Der Maschinen nom” (1954, No. 7, page 6 ) known.
  • Sawtooth grooves or threads with longitudinal grooves are made in the cylindrical running surface in order to ensure a non-rotating adhesion.
  • This type of pretreatment has proven to be unsuitable in particular in the case of methods for applying a wear layer with a focus and the associated high local heat input.
  • a wear layer made of an Fe-based alloy to the light metal alloy Additions 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 metal alloy to be coated is roughened by a blasting process.
  • this type of pretreatment is very complex due to the blasting systems to be used and only creates an undefined surface structure that causes an uneven introduction of stress into the wear layer, which leads to The consequence is that adequate adhesion of the wear layer is not guaranteed in all load cases.
  • a method for pretreating and coating an inner cylinder bore surface of an aluminum workpiece in which the surface is first honed in different directions, so that initially grooves or scratches arise in the microscopic area, which are to be bent over randomly by further honing, whereby folds and undercuts are to arise.
  • the adhesion of such microscopic layers to the subsequent coating is low.
  • the present invention is therefore based on the object of providing a remedy for the problems outlined above.
  • This object is achieved by a method in which, in a first step, macroscopic circumferential grooves or helically extending thread-like profiles are produced in a cylinder bore or cylinder liner made of a light metal alloy by spinning, cutting or milling, in a second step by a forming process undercuts are generated and in a third process step by welding onto the machined cylinder bore or cylinder liner or by plasma spraying, flame spraying or high-speed jet spraying of the machined cylinder bore or cylinder liner, a wear layer is applied in such a way that partial flanks facing a coating tool are applied in the circumferential direction extending grooves or helically extending thread-like profiles an angle of incidence of the media jet of the coating tool on the partial flanks of almost 90 ° au wise.
  • This claw structure initially leads to a defined enlargement of the adhesive surface of the running surface to be coated.
  • the subsequent coating process results in a higher energy load in the tips, which partially leads to a reproducible diffusion compensation of the wear layer with the base material.
  • the distance to the surface to be coated is so small, especially with diameters of 60-120 mm, that maximum acceleration cannot be achieved in the coating medium; the adhesion is reduced due to the low kinetic energy.
  • optimum adhesion is achieved when the surface to be coated is hit vertically.
  • the angle of incidence of the media jet in cylinders with a diameter of 60-120 mm in the lower cylinder area is significantly less than 90 °, which results in poor adhesion of the coating medium in this zone.
  • connection-like structures are created in zones. It is therefore advantageous according to the invention for the coating process that partial flanks of the claw structure directed towards a coating nozzle are adapted in such a way that the angle of incidence of the media jet of the coating tool is almost 90 °.
  • the macroscopic surface structure specifically produced in this way can be in the form of grooves, preferably extending in the circumferential direction, or also of spiral-shaped, thread-like profiles. Furthermore, the adhesion is improved according to the invention in the radial and / or axial direction by undercuts.
  • Electromagnetic focusing of the media jet significantly increases the energy (pinch effect) per unit area, which leads to an improvement in the layer adhesion.
  • Figure 1 shows a longitudinal section through a cylindrical running surface designed according to the invention.
  • the cylindrical running surface 1 consists of an aluminum alloy known per se.
  • the claw structures 2 according to the invention can also be introduced into the cylindrical running surface 1 in various other ways, such as spinning, cutting, milling, etc.
  • the slight undercuts 4 shown in the present exemplary embodiment are attached to the claw structures 2 by a subsequent forming process.
  • a wear layer 3 was then applied to the cylindrical running surface 1 by plasma spraying. The connection in the area of the thread profile 2 can be clearly seen.
  • FIG 2 A schematic representation of the machining process for applying one of the wear layers 3 by the media jet 5 is shown Figure 2 .
  • the claw structure 2 ensures that the angle of incidence of the media jet 5 is almost 90 °.
  • Figure 3 a first embodiment of the structure 2, which ensures this defined angle of incidence.
  • the alignment of the partial flanks 6 is constant over the entire cylindrical running surface 1, which means that the media jet 5 is moved translationally along the longitudinal axis of the cylindrical running surface 1 during the coating process (see dash-dotted lines).
  • Figure 4 shows a claw structure 2, the partial flanks 6 of which have a steadily decreasing setting angle ⁇ in the longitudinal direction of the cylindrical running surface 1.
  • a claw structure 2 can be produced in a known manner, for example by a CNC machine.
  • the media jet 5 then only needs to execute a rotary movement, as shown, 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)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Coating By Spraying Or Casting (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Physical Vapour Deposition (AREA)

Description

Die Erfindung betrifft ein Verfahren zur Herstellung einer zylindrischen Lauffläche.The invention relates to a method for producing a cylindrical running surface.

Eine zylindrische Lauffläche ist beispielsweiseaus dem Aufsatz von Hans Rininger "Flammgespritzte Gleitlager" aus "Der Maschinenmarkt" (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.A cylindrical running surface is, for example, from the article from Hans Rininger "Flame-sprayed plain bearings" from "Der Maschinenmarkt" (1954, No. 7, page 6 ) known. Sawtooth grooves or threads with longitudinal grooves are made in the cylindrical running surface in order to ensure a non-rotating adhesion. This type of pretreatment has proven to be unsuitable in particular in the case of methods for applying a wear layer with a focus and the associated high local heat input.

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 wird. Um bei den ständig wechselnden mechanischen Belastungen dieser Schicht eine Haftung zu gewährleisten, wird dabei die zu beschichtende Leichtmetall-Legierung durch einen Strahlvorgang aufgerauht. 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 demands on 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 adding, for example, a wear layer made of an Fe-based alloy to the light metal alloy Additions 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 with the constantly changing mechanical loads on this layer, the light metal alloy to be coated is roughened by a blasting process. However, this type of pretreatment is very complex due to the blasting systems to be used and only creates an undefined surface structure that causes an uneven introduction of stress into the wear layer, which leads to The consequence is that adequate adhesion of the wear layer is not guaranteed in all load cases.

Auch ist beispielsweise aus der US 5,622,753 ein Verfahren zum Vorbehandeln und Beschichten einer Innenzylinderbohrungsoberfläche eines Aluminiumwerkstücks bekannt, bei dem die Oberfläche zunächst in verschiedene Richtungen gehont wird, so dass zunächst riefen beziehungsweise Kratzer im Mikrobereich entstehen, welche zufällig durch weiteres Honen umgebogen werden sollen, wodurch Falten und Hinterschnitte entstehen sollen. Die Haftung solcher mikroskopischer Schichten zur anschließenden Beschichtung ist gering.Also, for example, from the U.S. 5,622,753 a method for pretreating and coating an inner cylinder bore surface of an aluminum workpiece is known, in which the surface is first honed in different directions, so that initially grooves or scratches arise in the microscopic area, which are to be bent over randomly by further honing, whereby folds and undercuts are to arise. The adhesion of such microscopic layers to the subsequent coating is low.

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 of providing a remedy for the problems outlined above.

Diese Aufgabe wird durch ein Verfahren gelöst, bei dem in einem ersten Schritt in einer Zylinderbohrung oder Zylinderlaufbuchse aus einer Leichtmetalllegierung durch Drückwalzen, Schneiden oder Fräsen makroskopische sich in Umfangsrichtung erstreckende Nuten oder sich spiral-förmig erstreckende gewindeähnliche Profile hergestellt werden, in einem zweiten Schritt durch einen Umformprozess Hinterschneidungen erzeugt werden und in einem dritten Verfahrensschritt durch Aufschweißen auf die bearbeitete Zylinderbohrung oder Zylinderlaufbuchse oder durch Plasmaspritzen, Flammspritzen oder Hochgeschwindigkeits-Jet-Spritzen der bearbeiteten Zylinderbohrung oder Zylinderlaufbuchse eine Verschleißschicht derart aufgebracht wird, dass zu einem Beschichtungswerkzeug gerichtete Teilflanken der sich in Umfangsrichtung erstreckenden Nuten oder sich spiralförmig erstreckenden gewindeähnlichen Profile einen Auftreffwinkel des Medienstrahls des Beschichtungswerkzeugs auf die Teilflanken von nahezu 90° aufweisen.This object is achieved by a method in which, in a first step, macroscopic circumferential grooves or helically extending thread-like profiles are produced in a cylinder bore or cylinder liner made of a light metal alloy by spinning, cutting or milling, in a second step by a forming process undercuts are generated and in a third process step by welding onto the machined cylinder bore or cylinder liner or by plasma spraying, flame spraying or high-speed jet spraying of the machined cylinder bore or cylinder liner, a wear layer is applied in such a way that partial flanks facing a coating tool are applied in the circumferential direction extending grooves or helically extending thread-like profiles an angle of incidence of the media jet of the coating tool on the partial flanks of almost 90 ° au wise.

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 Hinterschnittstruktur zu Anschmelzungen, die die Haftung der Verschleißschicht noch weiter verbessern.This claw structure initially leads to a defined enlargement of the adhesive surface of the running surface to be coated. In addition, the subsequent coating process results in a higher energy load in the tips, which partially leads to a reproducible diffusion compensation of the wear layer with the base material. There is also melting at the tips of the undercut structure, which further improves 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 beschichtende 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 is so small, especially with diameters of 60-120 mm, that maximum acceleration cannot be achieved in the coating medium; the adhesion is reduced due to the low kinetic energy. In the case of plasma or flame spraying processes, optimum adhesion is achieved when the surface to be coated is hit vertically. In the case of coating processes without deflection of the plasma, the angle of incidence of the media jet in cylinders with a diameter of 60-120 mm in the lower cylinder area is significantly less than 90 °, which results in poor adhesion of the coating medium in this zone.

Durch Anpassung der Oberflächenstruktur auf den Strahlwinkel werden zonenweise verbindungsähnliche Strukturen erzeugt. Daher ist es erfindungsgemäß 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, connection-like structures are created in zones. It is therefore advantageous according to the invention for the coating process that partial flanks of the claw structure directed towards a coating nozzle are adapted in such a way that the angle of incidence of the media jet of the coating tool is almost 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 wird die Haftung erfindungsgemäß in radialer und/oder axialer Richtung durch Hinterschneidungen verbessert.The macroscopic surface structure specifically produced in this way can be in the form of grooves, preferably extending in the circumferential direction, or also of spiral-shaped, thread-like profiles. Furthermore, the adhesion is improved according to the invention in the radial and / or axial direction 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 proven to be advantageous to produce the inner contour of the bore provided with claw structures by welding, plasma spraying, flame spraying or high-speed jet spraying. Electromagnetic focusing of the media jet significantly increases the energy (pinch effect) per unit area, 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 Bohrungsinnenkontur,
Figur 3
eine vergrößerte schematische Darstellung nach Figur 2 mit einer ersten Ausführungsform der Verkrallstruktur, und
Figur 4
eine vergrößerte schematische Darstellung nach Figur 2 mit einer zweiten Ausführungsform der Verkrallstruktur,
The invention is described with reference to the following drawing, which shows:
Figure 1
a photographic representation of a longitudinal section through a tread designed according to the invention,
Figure 2
a schematic representation of a machining process of a bore inner contour,
Figure 3
an enlarged schematic representation according to Figure 2 with a first embodiment of the claw structure, and
Figure 4
an enlarged schematic representation according to Figure 2 with a second embodiment of the claw structure,

Figur 1 zeigt einen Längsschnitt durch eine erfindungsgemäß ausgebildete zylindrische Lauffläche. Figure 1 shows a longitudinal section through a cylindrical running surface designed according to the invention.

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 werden durch einen nachfolgenden Umformprozeß die im vorliegenden Ausführungsbeispiel dargestellten leichten Hinterschneidungen 4 an den Verkrallstrukturen 2 angebracht.The cylindrical running surface 1 consists of an aluminum alloy known per se. A claw structure 2, in the present exemplary embodiment a thread profile, was rotated into the running surface 1 in a known manner. It should be clear that the claw structures 2 according to the invention can also be introduced into the cylindrical running surface 1 in various other ways, such as spinning, cutting, milling, etc. Furthermore, the slight undercuts 4 shown in the present exemplary embodiment are attached to the claw structures 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.A wear layer 3 was then applied to the cylindrical running surface 1 by plasma spraying. The connection in the area of the thread profile 2 can be clearly seen.

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 could be completely omitted in the present example. The inventive design of the claw structure, which has an impact angle of almost 90 ° of the media jet on the partial flanks 6 (see Fig. Figs. 3 and 4 ) of the thread profile, this was essentially retained even after the wear layer had been applied by plasma spraying, since a defined introduction of heat could take place.

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 Struktur 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 layers 3 by the media jet 5 is shown Figure 2 . The claw structure 2 ensures that the angle of incidence of the media jet 5 is almost 90 °. It shows Figure 3 a first embodiment of the structure 2, which ensures this defined angle of incidence. The alignment of the partial flanks 6 is constant over the entire cylindrical running surface 1, which means that the media jet 5 is moved translationally along the longitudinal axis of the cylindrical running surface 1 during the coating process (see dash-dotted lines).

Figur 4 zeigt eine Verkrallstruktur 2, deren Teilflanken 6 in Längsrichtung der zylindrischen Lauffläche 1 einen sich stetig verringernden Anstellwinkel α 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. Figure 4 shows a claw structure 2, the partial flanks 6 of which have a steadily decreasing setting angle α in the longitudinal direction of the cylindrical running surface 1. Such a claw structure 2 can be produced in a known manner, for example by a CNC machine. The media jet 5 then only needs to execute a rotary movement, as shown, which in turn leads to a simplification of the machining process.

Claims (1)

  1. Method of producing a cylindrical running surface, characterized in that, in a first step, macroscopic circumferentially extending grooves or spirally extending thread-like profiles (2) are formed in a cylinder bore or a cylinder liner of a light metal alloy by roller spinning, cutting or milling, in a second step, undercuts (4) are formed by a shaping process, and in a third method step, a wearing layer (3) is applied by welding on onto the treated cylinder bore or cylinder liner, or by plasma spraying, flame spraying or high-speed jet spraying on the treated cylinder bore or cylinder liner, such that partial flanks (6) of the circumferentially extending grooves or spirally extending thread-like profiles (2), which are facing a coating tool, have an angle of impact of the medium jet of the coating toll on the partial flanks (6) of almost 90°.
EP09167884.7A 2001-01-20 2002-01-15 Running surface on a cylinder Expired - Lifetime EP2112359B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10102654 2001-01-20
EP02000872A EP1225324B1 (en) 2001-01-20 2002-01-15 Running surface on a cylinder

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP02000872.8 Division 2002-01-15
EP02000872A Division EP1225324B1 (en) 2001-01-20 2002-01-15 Running surface on a cylinder

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EP2112359A1 EP2112359A1 (en) 2009-10-28
EP2112359B1 EP2112359B1 (en) 2013-04-03
EP2112359B2 true EP2112359B2 (en) 2021-10-06

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EP02000872A Expired - Lifetime EP1225324B1 (en) 2001-01-20 2002-01-15 Running surface on a cylinder

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DE102008019933A1 (en) * 2008-04-21 2009-10-22 Ford Global Technologies, LLC, Dearborn Apparatus and method for preparing a metal surface for applying a thermally sprayed layer
DE102008022225A1 (en) 2008-05-06 2009-11-12 Daimler Ag Treating an interior surface of a cylinder bore or cylinder liner for reciprocating-piston engine, comprises introducing recesses into a body by machining, and removing a part of the recesses material from the body by irradiating a laser
DE102008058452A1 (en) 2008-08-05 2010-02-11 Gühring Ohg Method and tool for producing a surface of predetermined roughness
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
DE102010064350A1 (en) 2010-12-29 2012-07-05 Robert Bosch Gmbh Brake disc and method for treating the surface of a brake disc
US8956700B2 (en) 2011-10-19 2015-02-17 General Electric Company Method for adhering a coating to a substrate structure
DE102012021859B4 (en) 2012-11-07 2018-10-18 Daimler Ag Process for the thermal coating of cylinder surfaces
DE102013011726A1 (en) 2013-07-12 2015-01-29 Bayerische Motorenwerke Aktiengesellschaft Method for processing a running surface of a cylinder of an internal combustion engine
US9863030B2 (en) 2015-03-02 2018-01-09 GM Global Technology Operations LLC Stress relief of mechanically roughened cylinder bores for reduced cracking tendency
DE102015112540A1 (en) * 2015-07-30 2017-02-16 Bayerische Motoren Werke Aktiengesellschaft Method and device for coating a surface
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
JP6441295B2 (en) * 2016-12-26 2018-12-19 本田技研工業株式会社 Junction structure and manufacturing method thereof

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Also Published As

Publication number Publication date
EP2112359A1 (en) 2009-10-28
ES2411477T3 (en) 2013-07-05
EP2112359B1 (en) 2013-04-03
EP1225324A2 (en) 2002-07-24
DE50213911D1 (en) 2009-11-26
ES2411477T5 (en) 2022-03-24
EP1225324B1 (en) 2009-10-14
ES2334770T3 (en) 2010-03-16
EP1225324A3 (en) 2003-03-26

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