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EP1167564A1 - Cutting edge with a thermally sprayed coating and method for forming the coating - Google Patents

Cutting edge with a thermally sprayed coating and method for forming the coating Download PDF

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Publication number
EP1167564A1
EP1167564A1 EP01115005A EP01115005A EP1167564A1 EP 1167564 A1 EP1167564 A1 EP 1167564A1 EP 01115005 A EP01115005 A EP 01115005A EP 01115005 A EP01115005 A EP 01115005A EP 1167564 A1 EP1167564 A1 EP 1167564A1
Authority
EP
European Patent Office
Prior art keywords
coating
cutting edge
spraying
thermally sprayed
compressive stresses
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.)
Withdrawn
Application number
EP01115005A
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German (de)
French (fr)
Inventor
Peter Heinrich
Werner Krömmer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Linde GmbH
Original Assignee
Linde GmbH
Linde Gas AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Linde GmbH, Linde Gas AG filed Critical Linde GmbH
Publication of EP1167564A1 publication Critical patent/EP1167564A1/en
Withdrawn legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C30/00—Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process
    • C23C30/005—Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process on hard metal substrates
    • 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
    • C23C24/00—Coating starting from inorganic powder
    • C23C24/02—Coating starting from inorganic powder by application of pressure only
    • C23C24/04—Impact or kinetic deposition of particles
    • 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
    • C23C4/129—Flame spraying

Definitions

  • the invention relates to a cutting edge with a thermally sprayed coating.
  • the invention further relates to a method for coating a cutting edge a thermal spray process.
  • Thermal spray processes are essentially characterized by the fact that they are in usually evenly applied coatings of high quality and quality enable. Coatings applied by thermal spraying can by varying the spray materials and / or the process parameters to different Requirements are adjusted. The spray materials can always be processed in the form of wires, rods or powder. It post-treatment may also be provided.
  • thermal spraying as a general coating process are as process variants basically autogenous flame spraying or high-speed flame spraying, arc spraying, plasma spraying, detonation spraying and known as laser spraying.
  • HVOF High Velocity Oxygen Fuel
  • At least one side of the cutting edge is included in the production of the coating Spray materials containing hard materials coated. This is done today using First or second generation high speed flame spraying, i.e. With average spray particle speeds below 450 m / s, or by means of plasma spraying.
  • the coating of sharp edges proves to be problematic.
  • the applied Layers adhere poorly, loosen or stand out at the edges and therefore break out.
  • the breaking out on the edge can also be a result of relatively brittle coating occur.
  • the susceptibility to corrosion is also problematic the cutting, supported by cleaning the knives.
  • the object of the present invention is therefore to provide a cutting edge and a method of to point out the type mentioned at the beginning, by which the service life is made possible or to increase the service life of the coated cutting edge.
  • the cutting edge at least partially includes a coating that has compressive stresses.
  • the cutting edge coated according to the invention preferably comprises a coating, that extends to the cutting edge of the cutting edge.
  • Coatings with compressive stresses can be produced by the coating by means of a thermal spray process with medium spray particle speeds is applied over 450 m / s.
  • the high-speed flame spraying of the third is therefore suitable for the invention and fourth generation with average spray particle speeds over 450 m / s.
  • Third and fourth generation systems of high speed flame spraying, with which the required speeds can be reached known for example under the names "DJ 2600", “DJ 2700” and "JP 5000".
  • the cutting edge can also advantageously be coated by means of cold gas spraying getting produced.
  • Coatings of the cutting edges can therefore, for example, by means of high-speed flame spraying with the mentioned systems from Sulzer Metco "DJ 2600 “or” DJ 2700 “, which work with propylene, hydrogen or ethene fuel gases, or the TAFA system "JP 5000", which works with liquid fuel gases like kerosene, getting produced.
  • cermets metal-bound Carbides
  • WCoCr titanium-bound Carbides
  • the cutting edges can be produced using thermal spraying processes in particular powders with particle sizes from 1 ⁇ m to 1 mm, particularly preferably with 5 to 100 ⁇ m.
  • the coating is advantageous at medium spray particle speeds over 550 m / s, preferably over 600 m / s, particularly preferably applied between 600 and 700 m / s.
  • higher particle speeds ensures that this with the Solidification of the material associated with shrinkage on the substrate and the resulting shrinkage Tensile stresses due to the beam effect with high kinetic energy impacting particles is overcompensated.
  • the coating preferably has compressive stresses of up to 600 MPa between 50 and 550 MPa. Compressive stresses in the named areas can be used with the systems of the third and fourth generation of high-speed flame spraying devices easily manufacture.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Coating By Spraying Or Casting (AREA)

Abstract

Cutting edge has a thermally sprayed coating with compression stress. An Independent claim is also included for a process for coating a cutting edge comprising thermally spraying coating having compression stress using a spraying process having an average particle speed of over 450 m/s. Preferably the coating is made of a cermet, especially tungsten carbide-cobalt materials containing chromium. The coating is applied by high speed flame spraying.

Description

Die Erfindung betrifft eine Schneide mit einer thermisch gespritzten Beschichtung.The invention relates to a cutting edge with a thermally sprayed coating.

Die Erfindung betrifft femer ein Verfahren zum Beschichten einer Schneide mittels eines thermischen Spritzverfahrens.The invention further relates to a method for coating a cutting edge a thermal spray process.

Es ist bekannt, Schneiden beispielsweise von Messern, die im Haushalt oder zu weiteren verschiedenartigen Zwecken - etwa in der Lebensmitteltechnik oder in anderen Bereichen - eingesetzt werden, insbesondere von Küchenmessem, zu beschichten. Dies dient in erster Linie dazu, die Standzeit der Schneiden zu erhöhen.It is known to cut knives, for example, in the household or at home other different purposes - for example in food technology or in other areas - are used, especially kitchen knives coat. This primarily serves to increase the service life of the cutting edges.

Neben der Standzeiterhöhung tritt ein weiterer Effekt auf: An der Schneide entsteht durch das Beschichten eine wellenförmige Kante mit der Folge, dass eine Schneiden mit der beschichteten Schneide zumindest teilweise auch ein Reißen umfasst. Klar und deutlich erkennbar ist dieser Effekt an den sogenannten Tomatenmessern.In addition to the increase in tool life, there is another effect: on the cutting edge by coating a wavy edge with the result that a cutting with the coated cutting edge at least partially includes tearing. Clear and This effect is clearly recognizable from the so-called tomato knives.

Thermische Spritzverfahren zeichnen sich im wesentlichen dadurch aus, dass sie in der Regel gleichmäßig aufgetragene Beschichtungen von hoher Qualität und Güte ermöglichen. Durch thermische Spritzverfahren aufgetragene Beschichtungen können durch Variation der Spritzmaterialien und/oder der Verfahrensparameter an unterschiedliche Anforderungen angepasst werden. Die Spritzmaterialien können dabei grundsätzlich in Form von Drähten, Stäben oder als Pulver verarbeitet werden. Es kann zusätzlich eine Nachbehandlung vorgesehen sein.Thermal spray processes are essentially characterized by the fact that they are in usually evenly applied coatings of high quality and quality enable. Coatings applied by thermal spraying can by varying the spray materials and / or the process parameters to different Requirements are adjusted. The spray materials can always be processed in the form of wires, rods or powder. It post-treatment may also be provided.

Beim thermischen Spritzen als allgemeines Beschichtungsverfahren sind als Verfahrensvarianten grundsätzlich das autogene Flammspritzen oder das Hochgeschwindigkeits-Flammspritzen, das Lichtbogenspritzen, das Plasmaspritzen, das Detonationsspritzen und das Laserspritzen bekannt.In thermal spraying as a general coating process are as process variants basically autogenous flame spraying or high-speed flame spraying, arc spraying, plasma spraying, detonation spraying and known as laser spraying.

In jüngerer Zeit wurde darüber hinaus ein weiteres thermisches Spritzverfahren entwickelt, welches auch als Kaltgasspritzen bezeichnet wird. Es handelt sich dabei um eine Art Weiterentwicklung des Hochgeschwindigkeits-Flammspritzens. Dieses Verfahren ist beispielsweise in der europäischen Patentschrift EP 0 484 533 B1 beschrieben. Beim Kaltgasspritzen kommt ein Zusatzwerkstoff in Pulverform zum Einsatz. Die Pulverpartikel werden beim Kaltgasspritzen jedoch nicht im Gasstrahl geschmolzen. Vielmehr liegt die Temperatur des Gasstrahles unterhalb des Schmelzpunktes der Zusatzwerkstoffpulverpartikel (EP 0 484 533 B1). Im Kaltgasspritzverfahren wird also ein im Vergleich zu den herkömmlichen Spritzverfahren "kaltes" bzw. ein vergleichsweise kälteres Gas verwendet. Gleichwohl wird das Gas aber ebenso wie in den herkömmlichen Verfahren erwärmt, aber in der Regel lediglich auf Temperaturen unterhalb des Schmelzpunktes der Pulverpartikel des Zusatzwerkstoffes. Beim Kaltgasspritzen können die Pulverpartikel auf eine Geschwindigkeit von 300 bis 1600 m/s beschleunigt werden.Recently, another thermal spraying process has also been developed which is also known as cold gas spraying. It is about a kind of further development of high-speed flame spraying. This method is described, for example, in European Patent EP 0 484 533 B1. A filler material in powder form is used for cold gas spraying. The However, powder particles are not melted in a gas jet during cold gas spraying. Rather, the temperature of the gas jet is below the melting point of the Filler powder particles (EP 0 484 533 B1). So in the cold gas spraying process a "cold" or a comparative compared to the conventional spraying process colder gas used. Nevertheless, the gas is just as in the conventional Process heated, but usually only to temperatures below the melting point of the powder particles of the filler material. With cold gas spraying the powder particles can reach a speed of 300 to 1600 m / s be accelerated.

Beim Hochgeschwindigkeits-Flammspritzen oder auch HVOF-Spritzen (High Velocity Oxygen Fuel) werden verschiedene Verfahrensgenerationen unterschieden:
Das Hochgeschwindigkeits-Flammspritzen der ersten Generation und das Hochgeschwindigkeits-Flammspritzen der zweiten Generation mit mittleren Spritzpartikelgeschwindigkeiten zwischen 400 und 450 m/s und seit 1992 bzw. 1994 das Hochgeschwindigkeits-Flammspritzen der dritten und vierten Generation mit mittleren Spritzpartikelgeschwindigkeiten über 450 m/s.Different generations of processes are distinguished for high-speed flame spraying or HVOF (High Velocity Oxygen Fuel) spraying:
First generation high speed flame spraying and second generation high speed flame spraying with medium spray particle speeds between 400 and 450 m / s and since 1992 and 1994 third and fourth generation high speed flame spraying with medium spray particle speeds over 450 m / s.

Bei der Herstellung der Beschichtung wird zumindest eine Seite der Schneide mit Hartstoffe enthaltenden Spritzmaterialien beschichtet. Dies geschieht heute mittels Hochgeschwindigkeits-Flammspritzens der ersten oder zweiten Generation, d.h. mit mittleren Spritzpartikelgeschwindigkeiten unter 450 m/s, oder mittels Plasmaspritzens.At least one side of the cutting edge is included in the production of the coating Spray materials containing hard materials coated. This is done today using First or second generation high speed flame spraying, i.e. With average spray particle speeds below 450 m / s, or by means of plasma spraying.

Die Beschichtung von scharfen Kanten erweist sich jedoch als problematisch. Die aufgetragenen Schichten haften schlecht, lösen oder heben sich an den Kanten ab und brechen folglich aus. Das Ausbrechen an der Kante kann aber auch als Folge der relativ spröden Beschichtung auftreten. Problematisch ist außerdem die Korossionsanfälligkeit der Schneiden, unterstützt durch das Reinigen der Messer.However, the coating of sharp edges proves to be problematic. The applied Layers adhere poorly, loosen or stand out at the edges and therefore break out. The breaking out on the edge can also be a result of relatively brittle coating occur. The susceptibility to corrosion is also problematic the cutting, supported by cleaning the knives.

Aufgabe der vorliegenden Erfindung ist es daher, eine Schneide und ein Verfahren der eingangs genannten Art aufzuzeigen, durch welche ermöglicht wird, die Standzeiten bzw. die Lebensdauer der beschichteten Schneide zu erhöhen. The object of the present invention is therefore to provide a cutting edge and a method of to point out the type mentioned at the beginning, by which the service life is made possible or to increase the service life of the coated cutting edge.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, dass die Schneide zumindest teilweise eine Beschichtung umfasst, die Druckspannungen aufweist.This object is achieved in that the cutting edge at least partially includes a coating that has compressive stresses.

Die erfindungsgemäß beschichtete Schneide umfasst dabei bevorzugt eine Beschichtung, die bis an die Schnittkante der Schneide reicht.The cutting edge coated according to the invention preferably comprises a coating, that extends to the cutting edge of the cutting edge.

Es wurde festgestellt, dass die aus dem Stand der Technik bekannten Beschichtungen für Schneiden Zugeigenspannungen aufweisen, welche sich für die Einsatzdauer und die Standzeiten ungünstig auswirken. Erfindungsgemäß werden daher Zugeigenspannungen in der Beschichtung der Schneiden vermieden. Vielmehr werden nunmehr Druckspannungen in der Beschichtung vorgeschlagen. Druckspannungen bedeuten, dass die Kohäsion der Partikel in der Schicht verbessert ist und das Material bei sich wechselnder Belastung nicht so schnell zum Abheben, Ablösen oder zur Rissbildung neigt.It has been found that the coatings known from the prior art for cutting have internal tensile stresses, which vary for the duration of use and the downtimes have an unfavorable effect. According to the invention, residual tensile stresses are therefore avoided in the coating of the cutting edges. Rather, now Compression stresses in the coating proposed. Compressive stress mean that the cohesion of the particles in the layer is improved and the material itself changing load not so quickly for lifting, peeling or cracking inclines.

Beschichtungen mit Druckspannungen lassen sich dadurch erzeugen, dass die Beschichtung mittels eines thermischen Spritzverfahrens mit mittleren Spritzpartikelgeschwindigkeiten über 450 m/s aufgebracht wird.Coatings with compressive stresses can be produced by the coating by means of a thermal spray process with medium spray particle speeds is applied over 450 m / s.

Für die Erfindung eignet sich also das Hochgeschwindigkeits-Flammspritzen der dritten und vierten Generation mit mittleren Spritzpartikelgeschwindigkeiten über 450 m/s. Systeme der dritten und vierten Generation des Hochgeschwindigkeits-Flammspritzens, mit denen die geforderten Geschwindigkeiten erreicht werden können, sind beispielsweise unter den Bezeichnungen "DJ 2600", "DJ 2700" und "JP 5000" bekannt.The high-speed flame spraying of the third is therefore suitable for the invention and fourth generation with average spray particle speeds over 450 m / s. Third and fourth generation systems of high speed flame spraying, with which the required speeds can be reached known for example under the names "DJ 2600", "DJ 2700" and "JP 5000".

Die Beschichtung der Schneide kann auch vorteilhafterweise mittels des Kaltgasspritzens hergestellt werden.The cutting edge can also advantageously be coated by means of cold gas spraying getting produced.

Als Gase für das thermische Spritzen kommen alle für diese Verfahren bekannten Gase in Betracht.All gases known for these processes come as gases for thermal spraying Gases into consideration.

Beschichtungen der Schneiden können daher beispielsweise mittels des Hochgeschwindigkeits-Flammspritzens mit den genannten Systemen von Sulzer Metco "DJ 2600" oder "DJ 2700", die mit Brenngasen Propylen, Wasserstoff oder Ethen arbeiten, oder der TAFA-Anlage "JP 5000", die mit flüssigen Brenngasen wie Kerosin arbeitet, hergestellt werden.Coatings of the cutting edges can therefore, for example, by means of high-speed flame spraying with the mentioned systems from Sulzer Metco "DJ 2600 "or" DJ 2700 ", which work with propylene, hydrogen or ethene fuel gases, or the TAFA system "JP 5000", which works with liquid fuel gases like kerosene, getting produced.

Für die Beschichtung der Schneiden mittels thermischen Spritzens können als Spritzmaterialien im Rahmen der Erfindung insbesondere Cermets (metallgebundene Karbide) und dergleichen verwendet werden. Bevorzugt finden Wolframcarbid-Kobald-Materialien (WCCoCr) mit Chromanteilen von 2 bis 10 % Verwendung.For coating the cutting edges by means of thermal spraying can be used as spraying materials Within the scope of the invention, in particular cermets (metal-bound Carbides) and the like can be used. Tungsten carbide cobalt materials are preferred (WCCoCr) with 2 to 10% chromium content.

Zur Herstellung der Schneiden mittels der thermischen Spritzverfahren eignen sich insbesondere Pulver mit Partikelgrößen von 1 µm bis 1 mm, besonders bevorzugt mit 5 bis 100 µm.The cutting edges can be produced using thermal spraying processes in particular powders with particle sizes from 1 μm to 1 mm, particularly preferably with 5 to 100 µm.

Erfindungsgemäß werden - wie oben ausgeführt - zur Beschichtung der Schneiden mittels thermischen Spritzens mittlere Spritzpartikelgeschwindigkeiten von zumindest 450 m/s beim Aufprall der Partikel vorgeschlagen. Vorteilhafterweise wird die Beschichtung bei mittleren Spritzpartikelgeschwindigkeiten über 550 m/s, bevorzugt über 600 m/s, besonders bevorzugt zwischen 600 und 700 m/s aufgebracht. Durch die erfindungsgemäß höheren Partikelgeschwindigkeiten wird gewährleistet, dass das mit dem Erstarren des Materials auf dem Substrat verbundene Schrumpfen und die daraus resultierenden Zugspannungen durch den Strahleffekt der mit hoher kinetischer Energie aufprallenden Partikeln überkompensiert wird.According to the invention - as explained above - for coating the cutting edges by means of thermal spraying average spray particle speeds of at least 450 m / s proposed on impact of the particles. The coating is advantageous at medium spray particle speeds over 550 m / s, preferably over 600 m / s, particularly preferably applied between 600 and 700 m / s. By the invention higher particle speeds ensures that this with the Solidification of the material associated with shrinkage on the substrate and the resulting shrinkage Tensile stresses due to the beam effect with high kinetic energy impacting particles is overcompensated.

Erfindungsgemäß weist die Beschichtung Druckspannungen bis 600 MPa, vorzugsweise zwischen 50 und 550 MPa auf. Druckspannungen in den genannten Bereichen lassen sich mit den Systemen der dritten und vierten Generation der Hochgeschwindigkeits-Flammspritzgeräte ohne weiteres herstellen.According to the invention, the coating preferably has compressive stresses of up to 600 MPa between 50 and 550 MPa. Compressive stresses in the named areas can be used with the systems of the third and fourth generation of high-speed flame spraying devices easily manufacture.

Claims (9)

Schneide mit einer thermisch gespritzten Beschichtung, dadurch gekennzeichnet, dass die Schneide zumindest teilweise eine Beschichtung umfasst, die Druckspannungen aufweist.Cutting edge with a thermally sprayed coating, characterized in that the cutting edge at least partially comprises a coating which has compressive stresses. Schneide nach Anspruch 1, dadurch gekennzeichnet, dass die Beschichtung eine mittels eines thermischen Spritzverfahrens mit mittleren Spritzpartikelgeschwindigkeiten über 450 m/s aufgebrachte Beschichtung ist.Cutting edge according to claim 1, characterized in that the coating is a coating applied by means of a thermal spraying process with average spray particle speeds above 450 m / s. Schneide nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Beschichtung Druckspannungen bis 600 MPa, vorzugsweise zwischen 50 und 550 MPa aufweist.Cutting edge according to claim 1 or 2, characterized in that the coating has compressive stresses of up to 600 MPa, preferably between 50 and 550 MPa. Schneide nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Beschichtung Cermets, insbeosndere Wolframcarbid-Kobald-Materialien mit Chromanteilen, umfasst.Cutting edge according to one of claims 1 to 3, characterized in that the coating comprises cermets, in particular tungsten carbide cobalt materials with chromium components. Schneide nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass lediglich eine Seite der Schneide eine thermisch gespritzte Beschichtung enthält.Cutting edge according to one of claims 1 to 4, characterized in that only one side of the cutting edge contains a thermally sprayed coating. Verfahren zum Beschichten einer Schneide mittels eines thermischen Spritzverfahrens, dadurch gekennzeichnet, dass eine Druckspannungen aufweisende Beschichtung mittels eines Spritzverfahrens mit mittleren Spritzpartikelgeschwindigkeiten über 450 m/s aufgebracht wird.Process for coating a cutting edge by means of a thermal spray process, characterized in that a coating having compressive stresses is applied by means of a spray process with average spray particle speeds of over 450 m / s. Verfahren nach Anspruch 6, dadurch gekennzeichnet, dass die Beschichtung bei mittleren Spritzpartikelgeschwindigkeiten über 450 m/s, bevorzugt über 550 m/s, besonders bevorzugt zwischen 600 und 700 m/s aufgebracht wird.A method according to claim 6, characterized in that the coating is applied at average spray particle speeds above 450 m / s, preferably above 550 m / s, particularly preferably between 600 and 700 m / s. Verfahren nach Anspruch 6 oder 7, dadurch gekennzeichnet, dass die Beschichtung mittels Hochgeschwindigkeits-Flammspritzens oder Kaltgasspritzens aufgebracht wird.A method according to claim 6 or 7, characterized in that the coating is applied by means of high-speed flame spraying or cold gas spraying. Messer mit einer Schneide nach einem der Ansprüche 1 bis 5.Knife with a cutting edge according to one of claims 1 to 5.
EP01115005A 2000-06-23 2001-06-20 Cutting edge with a thermally sprayed coating and method for forming the coating Withdrawn EP1167564A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10029686A DE10029686A1 (en) 2000-06-23 2000-06-23 Cutting edge with thermally sprayed coating and process for producing the coating
DE10029686 2000-06-23

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EP1167564A1 true EP1167564A1 (en) 2002-01-02

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WO2005052210A1 (en) * 2003-11-21 2005-06-09 General Electric Company Erosion resistant coatings and methods thereof
EP1985726A1 (en) * 2007-04-27 2008-10-29 WMF Aktiengesellschaft Cutter tool with a cutting edge reinforced with hard material

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Publication number Priority date Publication date Assignee Title
DE102021113631A1 (en) 2021-05-26 2022-12-01 Dipl.Ing. S c h i n d l e r & Wagner GmbH & Co KG Cutting knife, method of manufacture and use

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JPS6365079A (en) * 1986-09-04 1988-03-23 Mitsubishi Metal Corp Surface coated head alloy for cutting tool having high resistance to chipping
US5075181A (en) * 1989-05-05 1991-12-24 Kennametal Inc. High hardness/high compressive stress multilayer coated tool
US5266388A (en) * 1990-09-17 1993-11-30 Kennametal Inc. Binder enriched coated cutting tool
JPH04300104A (en) * 1991-03-28 1992-10-23 Mitsubishi Materials Corp Surface-coated cutting tool
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