EP0911423B1 - Méthode pour assembler des pièces - Google Patents

Méthode pour assembler des pièces Download PDF

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Publication number
EP0911423B1
EP0911423B1 EP98120102A EP98120102A EP0911423B1 EP 0911423 B1 EP0911423 B1 EP 0911423B1 EP 98120102 A EP98120102 A EP 98120102A EP 98120102 A EP98120102 A EP 98120102A EP 0911423 B1 EP0911423 B1 EP 0911423B1
Authority
EP
European Patent Office
Prior art keywords
gas
workpieces
thermal spraying
spraying
workpiece
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.)
Revoked
Application number
EP98120102A
Other languages
German (de)
English (en)
Other versions
EP0911423A1 (fr
Inventor
Peter Dipl.-Ing. Heinrich
Heinrich Professor Dr.-Ing. Kreye
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
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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=7846740&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0911423(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Linde GmbH filed Critical Linde GmbH
Publication of EP0911423A1 publication Critical patent/EP0911423A1/fr
Application granted granted Critical
Publication of EP0911423B1 publication Critical patent/EP0911423B1/fr
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

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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
    • 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
    • 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

Definitions

  • the invention relates to a method for connecting workpieces, whereby thermal spraying one spray layer or several spray layers which are at least partially a surface of a first workpiece and at least partially cover a surface of a second workpiece, and wherein a powdery filler material by means of a gas on the to be coated Surfaces.
  • a powdery filler material by means of a gas on the to be coated Surfaces.
  • DE-A-15 00 733 describes a method for the insoluble connection of non-to one another weldable material parts by coating with a wire or Powder spraying process with and without a protective gas atmosphere or by means of a Plasma spraying process with a protective gas atmosphere is known
  • Thermal spraying for coating is known as autogenous as process variants Flame spraying or high speed flame spraying, arc spraying, plasma spraying, detonation spraying and laser spraying.
  • arc spraying are particularly suitable for the invention, of detonation spraying and laser spraying and in particular that of autogenous flame spraying or high speed flame spraying.
  • a flame spray process is therefore preferred as a thermal one Spraying process used.
  • Thermal spray processes are essentially characterized in that they enable evenly applied coatings.
  • Coatings can be applied by varying the spray materials can be adapted to different requirements.
  • the spray materials can be processed in the form of wires, rods or powder. With thermal In addition, thermal post-treatment can be provided for spraying.
  • the present invention is based on the object of a method for connecting of workpieces, which simplifies the connection of workpieces, cheaper or made possible at all.
  • a connection of itself very different in geometry and / or material (in terms of Material composition as well as regarding the material properties) Workpieces are made possible.
  • the object is achieved in that the gas for thermal spraying Nitrogen, helium, argon, neon, krypton, xenon, a gas containing hydrogen, a carbon-containing gas, in particular carbon dioxide, oxygen, an oxygen containing gas, air, water vapor or mixtures of the aforementioned gases contains and that the powdered filler material on the to be coated Surfaces passed without the powder particles of the filler in the Gas jet are melted.
  • An essential feature of the invention is that the filler material in Powder form and not as wire.
  • the workpieces to be connected can vary greatly in terms of their geometry differ.
  • the method according to the invention can be used for fastening of webs or stiffeners in thin-walled constructions in particular can be used with advantage.
  • first spray layer useful that have a particularly high adhesive strength and / or a particular have good adhesion to both workpieces or where the material has one thermal expansion coefficient approximated to the material of the workpiece has.
  • first spray layers are important, for example, if one of the workpieces to be connected is made of glass or ceramic and the Connection should be exposed to temperature changes. Comments on Production of a spray layer according to the invention also applies accordingly to Cases with multiple spray layers.
  • a workpiece assembly is created in the manner described a first workpiece and a second workpiece with a connection between two workpieces from one produced by thermal spraying Spray layer or several produced by thermal spraying Spray layers which at least partially have a surface of the first workpiece and at least partially covers a surface of the second workpiece or cover.
  • the statement that the powder particles of the filler material are not in the gas jet are to be melted in the context of the present invention also means that the particles in the gas jet are essentially not melted. This can be ensured that the temperature of the gas jet below the melting point of the powder particles of the filler material. But even with Gas jet temperatures from 100 K to 200 K above the melting point the powder particles of the filler material can be due to the extremely short residence time the particles in the gas jet melt or melt in the range of milliseconds Melting of the powder particles can be prevented.
  • the importance of the higher Gas temperatures or the advantage of heating the gas is that in hotter gases the speed of sound is higher and therefore the Particle speed becomes comparatively greater.
  • the cold gas process has compared to conventional thermal processes Spraying a number of advantages.
  • the thermal action and force action the surface of the substrate material is reduced, which results in unwanted Changes in the material properties of the substrate material prevented or can be reduced at least noticeably.
  • largely Changes in the Structure of the substrate material can be prevented.
  • the one with the cold gas spraying process created layers have no or at least no pronounced texture, i.e. there is no preferred orientation of the individual grains or crystals.
  • the substrate is also not heated by a flame or a plasma, so that none or only extremely small changes to the base body and no distortion of workpieces due to thermal stress due to thermal spraying.
  • the gas for thermal spraying can be nitrogen, helium, Argon, neon, krypton, xenon, a hydrogen-containing gas, a carbon-containing one Gas, especially carbon dioxide, oxygen, an oxygen-containing Contain gas, air, water vapor or mixtures of the aforementioned gases.
  • gases air and / or helium known from EP 0 484 533 B1 are suitable nitrogen, argon, also for the gas carrying the powdered filler material, Neon, krypton, xenon, oxygen, a hydrogen-containing gas, a carbon-containing one Gas, especially carbon dioxide, water vapor or mixtures of the aforementioned gases and mixtures of these gases with helium.
  • the proportion of helium of the total gas can be up to 90% by volume.
  • a helium content of is preferred 10 to 50 vol .-% observed in the gas mixture.
  • the gases used according to the invention have a sufficient density and Speed of sound to the required high speeds of the powder particles to be able to guarantee.
  • the gas can be inert and / or reactive gases contain. With the gases mentioned is the production of very dense and special uniform coatings possible, which is also due to their hardness and distinguish strength.
  • the layers have extremely low oxide contents. They have no or at least no pronounced texture, i.e. There is none Preferred orientation of the individual grains or crystals.
  • the substrate also becomes when cold gas spraying not heated by a flame or a plasma, so that none or only extremely minor changes to the base body and also no distortion of Workpieces occur due to thermal stresses due to thermal spraying.
  • the workpieces to be connected touch each other the connection point when applying the spray layer or layers.
  • the workpiece assembly produced in this way is below the connected workpieces the spray layer or the spray layers in direct contact.
  • the workpieces to be connected are at the junction when applying the spray layer or layers spaced from each other and by thermal spraying the space at the junction is filled.
  • the workpiece network is therefore between the connected workpieces with the sprayed Filler material or filler material filled space.
  • the adjacent surface area of the workpieces are coated.
  • the gas jet can be heated to a temperature in the range between 30 and 800 ° C are, all known powdery spray materials are used can.
  • the invention is particularly suitable for wettable powders made of metals, metal alloys, Hard materials, ceramics and / or plastics.
  • the temperature of the gas jet selected between 300 and 500 ° C. These gas temperatures are particularly suitable for the use of reactive gases or reactive Gas constituents. As reactive gas or gas components are in particular Hydrogen admixtures, carbon-containing gases or nitrogenous gases mention.
  • a gas jet with a pressure of 5 to 50 bar used.
  • gas pressures in the range from 21 to 50 bar are particularly suitable.
  • excellent Spray results were achieved, for example, with gas pressures of around 35 bar.
  • the High pressure gas supply can, for example, by the in the German patent application DE 197 16 414.5 described method or the one described there Gas supply system can be ensured.
  • the powder particles can run at a speed accelerated from 300 to 1600 m / s. Suitable in the process according to the invention speeds of the powder particles between 1000 and 1600 m / s, particularly preferably between 1250 and 1600 m / s, since in this case the Energy transfer in the form of kinetic energy is particularly high.
  • the powders used in the process according to the invention preferably have Particle sizes from 1 to 100 ⁇ m.
  • the applied spray layer 3 covers the surface of the first tube 1 and the surface in the connection area of the second pipe 2.
  • the spray layer 3 and thus the pipe connection extends over the entire circumference of the pipe.
  • the arrow shows that the Making the pipe connection the pipes can be turned.
  • FIG 2 shows two enlargements of possible sections in picture A and picture B.
  • Pipe connections for example from Figure 1 in section.
  • picture A they touch Pipe pieces 1 and 2 are not immediately, but they are at a short distance arranged to each other.
  • auxiliary workpiece 4 which the Covering the area of the pipe interior, a connection is made through the spray layer 3 manufactured, which fills the pipe gap and the adjacent pipe ends of the Pipes 1 and 2 covered.
  • the pipe ends of the pipes shown in Figure B of Figure 2 1 and 2 taper.
  • the tube ends are for thermal spraying Establishing a pipe connection in contact with each other.
  • the spray layer 3 fills also the space created by the tapering of the pipe ends.
  • Figure 3 shows a thin-walled structural part 5, which stiffened with a web 6 becomes. Construction part 5 and web 6 touch. I'm at the contact surfaces adjacent surface area are spray layers 3 for connecting the two Workpieces sprayed on.

Claims (7)

  1. Procédé en vue de la jonction de pièces (1, 2; 5, 6), une couche de projection (3) ou plusieurs couches de projection étant fabriquées par projection à chaud, laquelle ou lesquelles recouvrent au moins partiellement une surface d'une première pièce (1; 5) et au moins partiellement une surface d'une deuxième pièce (2; 6) et un matériau auxiliaire pulvérulent étant acheminé à l'aide d'un gaz sur les surfaces à revêtir, caractérisé en ce que le gaz pour la projection à chaud contient de l'azote, de l'hélium, de l'argon, du néon, du krypton, du xénon, un gaz contenant de l'hydrogène, un gaz contenant du carbone, en particulier, du dioxyde de carbone, de l'oxygène, un gaz contenant de l'oxygène, de l'air, de la vapeur d'eau ou des mélanges des gaz cités ci-dessus et en ce que le matériau auxiliaire pulvérulent est acheminé sur les surfaces à revêtir, sans que les particules de poudre du matériau auxiliaire ne passent à l'état fondu dans le jet de gaz.
  2. Procédé selon la revendication 1, caractérisé en ce que les pièces à joindre (1, 2; 5, 6) se touchent au point de jonction lors de l'application de la couche de projection (3).
  3. Procédé selon la revendication 1, caractérisé en ce que les pièces à joindre (1, 2; 5, 6) sont disposées, lors de l'application de la couche de projection (3), au point de jonction avec un écart l'une par rapport à l'autre et en ce que l'espace intermédiaire au point de jonction est rempli grâce à la projection à chaud.
  4. Procédé selon la revendication 3, caractérisé en ce qu'en plus de l'espace intermédiaire au point de jonction, on procède également au revêtement du domaine superficiel avoisinant des pièces (1, 2; 5, 6).
  5. Procédé selon l'une quelconque des revendications 1 à 4, caractérisé en ce que la température du jet de gaz, lors de la projection à chaud, se situe dans le domaine compris entre 30 et 800°C.
  6. Procédé selon l'une quelconque des revendications 1 à 5, caractérisé en ce que le jet de gaz, lors de la projection à chaud, présente une pression de 5 à 50 bars.
  7. Procédé selon l'une quelconque des revendications 1 à 6, caractérisé en ce que les particules de poudre sont accélérées, lors de la projection à chaud, à une vitesse de 300 à 1600 m/s.
EP98120102A 1997-10-27 1998-10-23 Méthode pour assembler des pièces Revoked EP0911423B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19747383A DE19747383A1 (de) 1997-10-27 1997-10-27 Verbinden von Werkstücken
DE19747383 1997-10-27

Publications (2)

Publication Number Publication Date
EP0911423A1 EP0911423A1 (fr) 1999-04-28
EP0911423B1 true EP0911423B1 (fr) 2004-08-18

Family

ID=7846740

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98120102A Revoked EP0911423B1 (fr) 1997-10-27 1998-10-23 Méthode pour assembler des pièces

Country Status (2)

Country Link
EP (1) EP0911423B1 (fr)
DE (2) DE19747383A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2206804A1 (fr) * 2009-01-07 2010-07-14 General Electric Company Système et procédé d'assemblage de pièces métalliques utilisant une technique de pulvérisation à froid
EP3141632A1 (fr) 2015-09-11 2017-03-15 Linde Aktiengesellschaft Procédé à joindre des pièces et pièces jointes fabriqueés par ce procédé

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7074693B2 (en) * 2003-06-24 2006-07-11 Integrated Materials, Inc. Plasma spraying for joining silicon parts
FR2918910B1 (fr) * 2007-07-16 2009-10-23 Carbone Lorraine Equipements G Procede de fabrication d'un element de genie chimique
DE102008003616A1 (de) * 2008-01-09 2009-07-23 Siemens Aktiengesellschaft Verfahren zur Verbindung mehrerer Teile durch Kaltgasspritzen
JP5484360B2 (ja) * 2011-01-07 2014-05-07 日本発條株式会社 導電部材
FR2983874B1 (fr) 2011-12-12 2014-02-21 Air Liquide Procede de revetement de surface par projection de particules au moyen d'un fluide vecteur cryogenique
DE102012018286A1 (de) 2012-09-14 2014-03-20 Daimler Ag Kaltschweißverfahren und Kaltschweißvorrichtung

Family Cites Families (11)

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Publication number Priority date Publication date Assignee Title
DE1500733A1 (de) * 1922-01-15 1969-07-10 Bayer Ag Verfahren zum unloeslichen Verbinden von Werkstoffteilen
GB691983A (en) * 1950-11-07 1953-05-27 Birmingham Small Arms Co Ltd Improvements in and connected with porous or sintered metal articles
DE2405490A1 (de) * 1974-02-02 1975-08-14 Vaillant Joh Kg Die verwendung des flammspritzens
DE3501410A1 (de) * 1985-01-17 1986-07-17 Linde Ag, 6200 Wiesbaden Verfahren zum auftragen von lot
DE3806177A1 (de) * 1988-02-26 1989-09-07 Siemens Ag Verfahren zum aufbringen von schichten aus hochtemperatur-supraleitendem material auf substrate
DE69016433T2 (de) * 1990-05-19 1995-07-20 Papyrin Anatolij Nikiforovic Beschichtungsverfahren und -vorrichtung.
US5070228A (en) * 1990-06-18 1991-12-03 General Electric Company Method for plasma spray joining active metal substrates
EP0667810A1 (fr) * 1993-09-15 1995-08-23 Societe Europeenne De Propulsion Procede pour la realisation de materiaux ou revetements composites et installation pour sa mise en uvre
DE4413306C1 (de) * 1994-04-16 1995-10-19 Daimler Benz Aerospace Ag Verfahren zur Verstärkung eines Bauteils und Anwendung des Verfahrens
DE4427262C1 (de) * 1994-07-30 1995-03-23 Mtu Muenchen Gmbh Verfahren und Vorrichtung zum Flammspritzen
DE19520885C2 (de) * 1995-06-08 1999-05-20 Daimler Benz Ag Verfahren zum thermischen Spritzen von Schichten aus Metallegierungen oder Metallen und seine Verwendung

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2206804A1 (fr) * 2009-01-07 2010-07-14 General Electric Company Système et procédé d'assemblage de pièces métalliques utilisant une technique de pulvérisation à froid
EP3141632A1 (fr) 2015-09-11 2017-03-15 Linde Aktiengesellschaft Procédé à joindre des pièces et pièces jointes fabriqueés par ce procédé
DE102015011657A1 (de) 2015-09-11 2017-03-16 Linde Aktiengesellschaft Verfahren zum Verbinden von Werkstücken und mit diesem Verfahren hergestellte Verbindungsstücke
WO2017041900A1 (fr) 2015-09-11 2017-03-16 Linde Aktiengesellschaft Procédé pour relier des pièces et pièces assemblées fabriquées par ce procédé

Also Published As

Publication number Publication date
EP0911423A1 (fr) 1999-04-28
DE59811830D1 (de) 2004-09-23
DE19747383A1 (de) 1999-04-29

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