EP1988295A2 - Surface-coated machine elements - Google Patents
Surface-coated machine elements Download PDFInfo
- Publication number
- EP1988295A2 EP1988295A2 EP08007797A EP08007797A EP1988295A2 EP 1988295 A2 EP1988295 A2 EP 1988295A2 EP 08007797 A EP08007797 A EP 08007797A EP 08007797 A EP08007797 A EP 08007797A EP 1988295 A2 EP1988295 A2 EP 1988295A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- material layer
- hard material
- machine elements
- metal
- enamel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
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- 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
- C23D—ENAMELLING OF, OR APPLYING A VITREOUS LAYER TO, METALS
- C23D5/00—Coating with enamels or vitreous layers
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- 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
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/04—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings of inorganic non-metallic material
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- 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
- C23C8/20—Carburising
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- 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
- C23C8/20—Carburising
- C23C8/22—Carburising of ferrous surfaces
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- 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
- C23D—ENAMELLING OF, OR APPLYING A VITREOUS LAYER TO, METALS
- C23D5/00—Coating with enamels or vitreous layers
- C23D5/06—Coating with enamels or vitreous layers producing designs or letters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1457—Piston rods
Definitions
- the invention relates to machine elements and components as sliding elements, which are equipped with a low-wear and corrosion-resistant surface coating.
- Low-wear and corrosion-resistant surfaces are required, inter alia, for machine elements and components in which a first is moved in a sliding manner relative to a second, in a linear or rotary manner.
- Such components are coated with metallic layers of hard chrome, nickel or bronze.
- coatings with ceramic materials, sintered materials, titanium nitride, titanium carbide or plastics are also known.
- the cylinder inner surface and piston rod surface are coated on all sides with plastic in Vortex sintering process or powder spraying.
- the plastic used is polytetrafluoroethylene as a three-dimensionally crosslinkable, temperature-resistant thermoplastic in powder form with the addition of further components.
- the hard material layer is harder than the material of the slider and has a roughness of less than 10 microns.
- oxide or non-oxidic ceramic layers which are applied primarily by plasma spraying, can be adapted in their properties by doping specific applications, but always require a complex final machining by grinding.
- Ceramic layers on sliding bodies or piston rods usually have a sufficient hardness, but are relatively sensitive to corrosive attacks due to the inevitable existing porosity, with aggressive substances up to penetrate the metal surface and can cause the layer to burst. Additional seals of porous layers also do not provide permanent corrosion protection. Layers of hard chrome provide good wear protection, but are also not particularly resistant because of the micro-cracking against chemical influences.
- titanium nitride, titanium carbide or the like which are applied by PVD (Physical Vapor Deposition) or CVD (Chemical Vapor Deposition) method are very hard, but because of the small layer thickness mechanically sensitive. The roughness of the layers thus applied corresponds to that of the substrate. Accordingly, the surfaces are mechanically machined as piston rods or other sliding bodies to the required quality and prepare technologically.
- PVD Physical Vapor Deposition
- CVD Chemical Vapor Deposition
- the object of the invention is to equip machine elements and components made of metal as sliding elements with a surface made of a hard material layer, which is corrosion-resistant, abrasion-resistant, has good sliding properties and is inexpensive to produce.
- the invention is based on the fact that a hard material layer as a surface for machine elements and components as sliding elements made of metal in the form of a glaze consists of a material of amorphous structure.
- a hardening glaze an enamel is used as an amorphous hardening glaze.
- the glassy surface of the enamel has an extremely low wear and a high impact resistance when using the sliding elements.
- the crack-free and pore-free surface of the enamel protects the substrate in the form of the metal of the machine elements and components against corrosive influences.
- the property values of the hard material layer of enamel as a sliding layer can be influenced in particular in terms of their hardness, toughness and color in a known manner by means of doping, in the form of admixtures to the enamel frit.
- the thickness of the enamel applied in particular in one layer as a hard material layer on the sliding body is preferably in a range of 80-500 micrometers.
- the hard material layer does not require post-processing after melting or firing in the enamelling process.
- Worn or damaged hard coatings can be removed, for example, by means of blasting.
- the sliding bodies can be regenerated in this way with the aid of a re-applied layer of enamel.
- the color of the hard material layer can be selected without adversely affecting the required quality of the surface of the slider for the respective purpose, also for design purposes.
- the hard material layer has different coloring.
- the coloring is conveniently carried out with signal colors in contrast to a base color, these sections, such as point or annular, are designed as signal marks. In this way, it is possible to visually detect the extended length of the piston rod of a working cylinder or the position of another sliding member on the basis of the signal marks by means of an optical sensor.
- the invention will be described as an embodiment of hand Fig. 1 explained in more detail as an outline of a section through a tubular piston rod of a working cylinder.
- Fig. 1 is applied to an outer shell of a tubular metallic piston rod 1 of a working cylinder, a hard material layer 2 made of enamel with a glassy surface 3.
- a hard material layer 2 made of enamel with a glassy surface 3.
- an adhesive layer 4 is formed by chemical reactions during the enameling process, the melting or incineration, which forms a solid, almost insoluble compound of glassy, amorphous solidifying mass with the outer shell of the piston rod 1 causes.
- the hard material layer 2 has a hardness of at least 700 HV (Vickers hardness), which gives the required wear resistance as well as shock and impact resistance.
- the layer thickness of the hard material layer 2 is preferably in the range of 100 micrometers. However, layer thicknesses of 80 to 500 micrometers are possible and can be implemented depending on the particular application. When manufactured with known enameling a thickness deviation of about 10 micrometers with a roundness deviation of a maximum of 0.6 percent of the nominal diameter of the piston rod 1 is ensured over the length of the piston rod. If necessary, a piston rod coated with the hard material layer 2 made of enamel can be regenerated by removing the hard material layer 2, preferably by means of sandblasting, and then applying it again. In this way can be adjusted by the choice of the thickness of the hard material layer 2, the diameter of the piston rod in a narrow range.
- the hard material layer 2 made of enamel with the glassy surface is known to be resistant to water and aggressive chemical substances, whereby the high corrosion resistance significantly prolongs the life of working cylinders with piston rods 1, the hard coating layer 2 made of enamel, in an environment with aggressive influences.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
Description
Die Erfindung betrifft Maschinenelemente und Bauteile als Gleitelemente, die mit einer verschleißarmen und korrosionsfesten Oberflächenbeschichtung ausgerüstet sind.The invention relates to machine elements and components as sliding elements, which are equipped with a low-wear and corrosion-resistant surface coating.
Verschleißarme und korrosionsfeste Oberflächen sind unter anderem für Maschinenelemente und Bauteile erforderlich, bei denen ein Erstes gegenüber einem Zweiten linear oder rotierend, aufeinander gleitend bewegt wird.
Üblicherweise werden derartige Bauteile mit metallischen Schichten aus Hartchrom, Nickel oder Bronze beschichtet. Bekannt sind auch Beschichtungen mit keramischen Materialien, Sintermaterialien, Titannitrid, Titancarbid oder Kunststoffen.Low-wear and corrosion-resistant surfaces are required, inter alia, for machine elements and components in which a first is moved in a sliding manner relative to a second, in a linear or rotary manner.
Usually, such components are coated with metallic layers of hard chrome, nickel or bronze. Also known are coatings with ceramic materials, sintered materials, titanium nitride, titanium carbide or plastics.
Beispielsweise wird in der Druckschrift
Die Beschichtung von Oberflächen der gleitenden Teile eines Trennschiebers, die zusammenwirkenden Kontaktflächen im Schiebergehäuse und am Dichtkörper, sind nach der Druckschrift
Andere Ausführungen von Hartstoffschichten sind in den Druckschriften
Aus der Druckschrift
Alle diese bekannten Schichten auf Oberflächen von Maschinenelementen sind entweder in Bezug auf den Verschleiß oder der Korrosion im Dauerbetrieb nicht ausreichend fest oder beständig sowie ist deren Herstellung mit erheblichem Aufwand verbunden.All these known layers on surfaces of machine elements are either not sufficiently strong or resistant in terms of wear or corrosion in continuous operation and their production is associated with considerable effort.
Die oxidischen oder auch nichtoxidischen keramischen Schichten, die vorwiegend durch Plasmaspritzen aufgebracht sind, können zwar in ihren Eigenschaften durch Dotierungen spezifischen Anwendungsfällen angepasst werden, erfordern jedoch stets eine aufwändige Endmaßbearbeitung mittels Schleifen.
Keramische Schichten auf Gleitkörpern oder Kolbenstangen haben meist eine ausreichende Härte, sind jedoch wegen der unvermeidlich vorhandenen Porosität gegenüber korrosiven Angriffen relativ empfindlich, wobei aggressive Stoffe bis auf die Metalloberfläche vordringen und ein Absprengen der Schicht bewirken können.
Zusätzliche Versiegelungen von porösen Schichten zeitigen auch keinen dauerhaften Korrosionsschutz.
Schichten aus Hartchrom bieten einen guten Verschleißschutz, sind aber wegen der Mikrorissigkeit gegen chemische Einflüsse ebenfalls nicht besonders beständig.Although the oxide or non-oxidic ceramic layers, which are applied primarily by plasma spraying, can be adapted in their properties by doping specific applications, but always require a complex final machining by grinding.
Ceramic layers on sliding bodies or piston rods usually have a sufficient hardness, but are relatively sensitive to corrosive attacks due to the inevitable existing porosity, with aggressive substances up to penetrate the metal surface and can cause the layer to burst.
Additional seals of porous layers also do not provide permanent corrosion protection.
Layers of hard chrome provide good wear protection, but are also not particularly resistant because of the micro-cracking against chemical influences.
Oberflächenbeschichtungen aus Titannitrid, Titancarbid oder Ähnlichem, die mittels PVD- (Physical Vapour Deposition) oder CVD (Chemical Vapour Deposition) - Verfahren aufgebracht sind, sind sehr hart, jedoch wegen der geringen Schichtdicke mechanisch empfindlich. Die Rauhigkeit der so aufgebrachten Schichten entspricht der des Substrats. Dem entsprechend sind die Oberflächen, wie von Kolbenstangen oder anderen Gleitkörpern mechanisch bis zur erforderlichen Qualität zu bearbeiten sowie technologisch vorzubereiten.Surface coatings of titanium nitride, titanium carbide or the like, which are applied by PVD (Physical Vapor Deposition) or CVD (Chemical Vapor Deposition) method are very hard, but because of the small layer thickness mechanically sensitive. The roughness of the layers thus applied corresponds to that of the substrate. Accordingly, the surfaces are mechanically machined as piston rods or other sliding bodies to the required quality and prepare technologically.
Die Aufgabe der Erfindung besteht darin, Maschinenelemente und Bauteile aus Metall als Gleitelemente mit einer Oberfläche aus einer Hartstoffschicht auszurüsten, die korrosionsbeständig, abriebfest ist, gute Gleiteigenschaften aufweist und günstig herstellbar ist.The object of the invention is to equip machine elements and components made of metal as sliding elements with a surface made of a hard material layer, which is corrosion-resistant, abrasion-resistant, has good sliding properties and is inexpensive to produce.
Die Aufgabe wird durch die im Patentanspruch 1 aufgeführten Merkmale gelöst. Bevorzugte Weiterbildungen ergeben sich aus den Unteransprüchen.The object is solved by the features listed in
Der Erfindung liegt zu Grunde, dass eine Hartstoffschicht als Oberfläche für Maschinenelemente und Bauteile als Gleitelemente aus Metall in Form einer Glasur aus einem Material amorpher Struktur besteht. Als amorph erhärtende Glasur wird ein Email eingesetzt.The invention is based on the fact that a hard material layer as a surface for machine elements and components as sliding elements made of metal in the form of a glaze consists of a material of amorphous structure. As an amorphous hardening glaze an enamel is used.
Die glasartige Oberfläche des Email weist beim Einsatz der Gleitelemente einen extrem geringen Verschleiß und eine hohe Schlagfestigkeit auf.
Durch die riss- und porenfreie Oberfläche des Email ist das Substrat in Form des Metalls der Maschinenelemente und Bauteile gegen korrosive Einflüsse geschützt. Während des Emailliervorgangs, beim Aufschmelzen, entsteht eine feste, fast unlösbare Verbindung der glasartig, amorph erstarrenden Masse.
Die Eigenschaftswerte der Hartstoffschicht aus Email als Gleitschicht lassen sich insbesondere in Bezug auf deren Härte, Zähigkeit und Farbe in bekannter Weise mittels Dotierungen, in Form von Beimischungen zur Emailfritte, beeinflussen.
Die Dicke des insbesondere in einer Schicht als Hartstoffschicht auf dem Gleitkörper aufgebrachten Emails liegt vorzugsweise in einem Bereich von 80 - 500 Mikrometer.The glassy surface of the enamel has an extremely low wear and a high impact resistance when using the sliding elements.
The crack-free and pore-free surface of the enamel protects the substrate in the form of the metal of the machine elements and components against corrosive influences. During the enamelling process, during melting, a solid, almost insoluble compound of the glassy, amorphous solidifying mass arises.
The property values of the hard material layer of enamel as a sliding layer can be influenced in particular in terms of their hardness, toughness and color in a known manner by means of doping, in the form of admixtures to the enamel frit.
The thickness of the enamel applied in particular in one layer as a hard material layer on the sliding body is preferably in a range of 80-500 micrometers.
Die Vorteile der Erfindung ergeben sich insbesondere aus den guten Gleiteigenschaften der Hartstoffschicht aus Email bei gleichzeitig geringem Verschleiß und hohem Korrosionsschutz.The advantages of the invention result in particular from the good sliding properties of the hard material layer of enamel with simultaneous low wear and high corrosion protection.
Bei sich relativ zueinander bewegenden Gleitelementen, deren Oberflächen aufeinander gleiten, ist nur die Oberfläche eines der Gleitelemente mit der Hartstoffschicht ausgerüstet und zwischen beiden Oberflächen befindet sich in üblicher Weise ein Schmierfilm.In the case of sliding elements which move relative to one another and whose surfaces slide on one another, only the surface of one of the sliding elements is equipped with the hard material layer and a lubricating film is located between the two surfaces in the usual way.
Die Hartstoffschicht bedarf nach dem Aufschmelzen bzw. dem Einbrand im Emaillierprozess keiner Nachbearbeitung.The hard material layer does not require post-processing after melting or firing in the enamelling process.
Verschlissene oder beschädigte Hartstoffschichten lassen sich beispielsweise mittels Strahlverfahren entfernen.Worn or damaged hard coatings can be removed, for example, by means of blasting.
Die Gleitkörper sind auf diese Weise mit Hilfe einer erneut aufzubringenden Schicht aus Email regenerierbar.The sliding bodies can be regenerated in this way with the aid of a re-applied layer of enamel.
Das Aufbringen der Hartstoffschicht aus Email ist technologisch gut beherrschbar und erfordert keinen erheblichen technologischen Aufwand oder umweltproblematische Verfahren.The application of the hard material layer of enamel is technologically easy to control and requires no significant technological effort or environmentally problematic procedures.
Die Farbe der Hartstoffschicht kann ohne negative Beeinflussung der erforderlichen Qualität der Oberfläche des Gleitkörpers für den jeweiligen Einsatzzweck, auch für Designzwecke, gewählt werden.The color of the hard material layer can be selected without adversely affecting the required quality of the surface of the slider for the respective purpose, also for design purposes.
In einer Ausführungsvariante weist die Hartstoffschicht unterschiedlicher Einfärbung auf. Die Einfärbung erfolgt günstigerweise mit Signalfarben im Kontrast zu einer Grundfarbe, wobei diese abschnittsweise, wie punkt- oder ringförmig, als Signalmarken ausgebildet sind.
Auf diese Weise ist es möglich, die ausgefahrene Länge der Kolbenstange eines Arbeitszylinders oder die Position eines anderen Gleitelements an Hand der Signalmarken mittels eines optischen Sensors oder visuell zu erfassen.In one embodiment variant, the hard material layer has different coloring. The coloring is conveniently carried out with signal colors in contrast to a base color, these sections, such as point or annular, are designed as signal marks.
In this way, it is possible to visually detect the extended length of the piston rod of a working cylinder or the position of another sliding member on the basis of the signal marks by means of an optical sensor.
Die Erfindung wird als Ausführungsbeispiel an Hand von
Nach
Die Hartstoffschicht 2 weist eine Härte von mindestens 700 HV (Vickers Härte) auf, wodurch die erforderliche Verschleißfestigkeit sowie die Stoß- und Schlagfestigkeit gegeben ist.The hard material layer 2 has a hardness of at least 700 HV (Vickers hardness), which gives the required wear resistance as well as shock and impact resistance.
Die Schichtdicke der Hartstoffschicht 2 liegt vorzugsweise im Bereich von 100 Mikrometern.
Es sind jedoch Schichtdicken von 80 bis 500 Mikrometern möglich und in Abhängigkeit vom jeweiligen Einsatzzweck realisierbar.
Bei Herstellung mit bekannten Emaillierverfahren wird über die Länge der Kolbenstange eine Dickenabweichung von etwa 10 Mikrometern bei einer Rundheitsabweichung von maximal 0,6 Prozent des Nenndurchmessers der Kolbenstange 1 gewährleistet.
Eine mit der Hartstoffschicht 2 aus Email beschichtete Kolbenstange ist bei Bedarf regenerierbar, indem die Hartstoffschicht 2 vorzugsweise mittels Sandstrahlen entfernt wird und anschließend erneut aufgebracht wird.
Auf diese Weise lassen sich durch die Wahl der Dicke der Hartstoffschicht 2 die Durchmesser der Kolbenstange in einem engen Bereich anpassen.The layer thickness of the hard material layer 2 is preferably in the range of 100 micrometers.
However, layer thicknesses of 80 to 500 micrometers are possible and can be implemented depending on the particular application.
When manufactured with known enameling a thickness deviation of about 10 micrometers with a roundness deviation of a maximum of 0.6 percent of the nominal diameter of the
If necessary, a piston rod coated with the hard material layer 2 made of enamel can be regenerated by removing the hard material layer 2, preferably by means of sandblasting, and then applying it again.
In this way can be adjusted by the choice of the thickness of the hard material layer 2, the diameter of the piston rod in a narrow range.
Die Hartstoffschicht 2 aus Email mit der glasartigen Oberfläche ist bekanntermaßen gegen Wasser und aggressiven chemischen Stoffen beständig, wodurch die hohe Korrosionsbeständigkeit die Lebensdauer von Arbeitszylindern mit Kolbenstangen 1, deren Hartstoffschicht 2 aus Email besteht, in einer Umgebung mit aggressiven Einflüssen wesentlich verlängert.The hard material layer 2 made of enamel with the glassy surface is known to be resistant to water and aggressive chemical substances, whereby the high corrosion resistance significantly prolongs the life of working cylinders with
Verwendete Bezugszeichen
- 1
- Kolbenstange
- 2
- Hartstoffschicht
- 3
- glasartige Oberfläche
- 4
- Haftschicht
- 1
- piston rod
- 2
- Hard coating
- 3
- glassy surface
- 4
- adhesive layer
Claims (6)
dass die Hartstoffschicht (2) eine Glasur aus einem Material amorpher Struktur mit glasartiger Oberfläche (3) ist.Machine elements and components made of metal as sliding elements with a surface of a hard material layer characterized
in that the hard material layer (2) is a glaze made of a material of amorphous structure with vitreous surface (3).
dass die Hartstoffschicht (2) aus der amorph erhärteten Glasur ein Email ist.Machine elements and components made of metal as sliding elements according to claim 1, characterized in that
that the hard material layer (2) of the amorphously hardened glaze is an enamel.
dass eine Kolbenstange (1) eines Arbeitszylinders eine Hartstoffschicht (2) aus Email aufweist.Machine elements and components made of metal as sliding elements according to claims 1 and 2, characterized in that
that a piston rod (1) of a working cylinder having a hard material layer (2) made of enamel.
dass die Hartstoffschicht (2) eine dem Einsatzzweck angepasste Farbe aufweist.Machine elements and components made of metal as sliding elements according to claims 1 to 3, characterized in that
that the hard material layer (2) has an adapted to the intended use color.
dass die Hartstoffschicht (2) eine dekorative Farbe aufweist.Machine elements and components made of metal as sliding elements according to claims 1 to 3, characterized in that
that the hard material layer (2) has a decorative color.
dass die Hartstoffschicht (2), im Kontrast zu einer Grundfarbe Farbareale aufweist, die als Signalmarken zur visuellen oder Auswertung mittels optischer Sensoren dienen.
HIERZU EINE SEITE ZEICHNUNGMachine elements and components made of metal as sliding elements according to claims 1 to 3, characterized in that
in that the hard material layer (2), in contrast to a primary color, has color bars which serve as signal marks for visual or evaluation by means of optical sensors.
HERE ONE SIDE DRAWING
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200720006370 DE202007006370U1 (en) | 2007-05-04 | 2007-05-04 | Coating for machine elements, comprises a hard surface material layer which consists of an amorphous material glaze |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1988295A2 true EP1988295A2 (en) | 2008-11-05 |
EP1988295A3 EP1988295A3 (en) | 2011-05-25 |
EP1988295B1 EP1988295B1 (en) | 2013-06-26 |
Family
ID=38266576
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08007797.7A Expired - Fee Related EP1988295B1 (en) | 2007-05-04 | 2008-04-23 | Surface-coated machine elements |
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---|---|
EP (1) | EP1988295B1 (en) |
DE (1) | DE202007006370U1 (en) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3147949A1 (en) | 1980-12-03 | 1982-07-01 | Lucas Industries Ltd., Birmingham, West Midlands | MACHINE ELEMENT WITH PROTECTIVE LAYER AND METHOD FOR THE PRODUCTION THEREOF |
DE3910725C1 (en) | 1989-04-03 | 1990-10-31 | Hydraudyne Cylinders B., Boxtel, Nl | |
DE29913762U1 (en) | 1999-08-06 | 2000-03-23 | IBS Ingenieurberatung Schlutz GmbH, 45770 Marl | PTFE coating for the production of a hydraulic cylinder |
DE20106763U1 (en) | 2001-04-19 | 2001-08-09 | Schlutz, Heinz, 45770 Marl | Mining cylinder with coating |
DE20209420U1 (en) | 2002-06-17 | 2002-11-21 | Emil Kammerer GmbH, 51469 Bergisch Gladbach | separating slide |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3158495A (en) * | 1960-09-30 | 1964-11-24 | Gen Electric | Solid lubricant coatings and coating compositions |
NL7013377A (en) * | 1970-09-10 | 1972-03-14 | ||
FR2233512A1 (en) * | 1973-06-14 | 1975-01-10 | Repiquet Sa | Vice with controlled displacement - has plastic marks on stem for photodetector |
DE3501656A1 (en) * | 1985-01-19 | 1986-07-24 | Nikolaus 3160 Lehrte Reininger | ENAMELED TUBE FOR HIGH PRESSURE HEAT EXCHANGER |
JPS61281880A (en) * | 1985-06-07 | 1986-12-12 | Matsushita Electric Ind Co Ltd | Article having insulating and wear-resistant coating layer |
FR2641553B1 (en) * | 1989-01-11 | 1991-08-23 | Seb Sa | ENAMELLED IRON SOLE |
CA2456395C (en) * | 2003-08-04 | 2012-07-24 | Industries Mailhot Inc. | Cleaning assembly for a shaft |
DE202007013155U1 (en) * | 2007-09-18 | 2007-12-13 | GET Göltz-Emailtechnik GmbH | Hydraulic cylinder and hydraulic piston with enamelled surface |
-
2007
- 2007-05-04 DE DE200720006370 patent/DE202007006370U1/en not_active Expired - Lifetime
-
2008
- 2008-04-23 EP EP08007797.7A patent/EP1988295B1/en not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3147949A1 (en) | 1980-12-03 | 1982-07-01 | Lucas Industries Ltd., Birmingham, West Midlands | MACHINE ELEMENT WITH PROTECTIVE LAYER AND METHOD FOR THE PRODUCTION THEREOF |
DE3910725C1 (en) | 1989-04-03 | 1990-10-31 | Hydraudyne Cylinders B., Boxtel, Nl | |
DE29913762U1 (en) | 1999-08-06 | 2000-03-23 | IBS Ingenieurberatung Schlutz GmbH, 45770 Marl | PTFE coating for the production of a hydraulic cylinder |
DE20106763U1 (en) | 2001-04-19 | 2001-08-09 | Schlutz, Heinz, 45770 Marl | Mining cylinder with coating |
DE20209420U1 (en) | 2002-06-17 | 2002-11-21 | Emil Kammerer GmbH, 51469 Bergisch Gladbach | separating slide |
Also Published As
Publication number | Publication date |
---|---|
EP1988295A3 (en) | 2011-05-25 |
EP1988295B1 (en) | 2013-06-26 |
DE202007006370U1 (en) | 2007-07-12 |
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