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EP0924315B1 - Production de gaz chaud pour la pulvérisation thermique - Google Patents

Production de gaz chaud pour la pulvérisation thermique Download PDF

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Publication number
EP0924315B1
EP0924315B1 EP98123464A EP98123464A EP0924315B1 EP 0924315 B1 EP0924315 B1 EP 0924315B1 EP 98123464 A EP98123464 A EP 98123464A EP 98123464 A EP98123464 A EP 98123464A EP 0924315 B1 EP0924315 B1 EP 0924315B1
Authority
EP
European Patent Office
Prior art keywords
gas
gas mixture
mixture
vessel
heated
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP98123464A
Other languages
German (de)
English (en)
Other versions
EP0924315A1 (fr
Inventor
Peter Dipl.-Ing. Heinrich
Helmut Dipl.-Ing. Meinass
Heinrich Prof. 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=7852562&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0924315(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 EP0924315A1 publication Critical patent/EP0924315A1/fr
Application granted granted Critical
Publication of EP0924315B1 publication Critical patent/EP0924315B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/16—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed
    • B05B7/1606—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed the spraying of the material involving the use of an atomising fluid, e.g. air
    • B05B7/1613—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed the spraying of the material involving the use of an atomising fluid, e.g. air comprising means for heating the atomising fluid before mixing with the material to be sprayed

Definitions

  • the invention relates to a method according to claim 1 for coating substrate materials thermal spraying, wherein the gas or gas mixture from at least one gas pressure vessel into a gas buffer container and from this gas buffer container to one Device for mixing a powdered filler material with the gas or gas mixture is passed, wherein the gas or gas mixture is heated and wherein the filler material by means of the gas or gas mixture on the to be coated Surface of the substrate material is passed.
  • the invention relates furthermore a device according to claim 8 for coating substrate materials by thermal Syringes, the device at least one gas pressure vessel, at least a gas buffer container, a device for mixing a powder Filler material with the gas or gas mixture and a device for heating of the gas or gas mixture, and lines for the gas or gas mixture the gas pressure container into the gas buffer container and from this gas buffer container to the device for mixing the powdered filler material with the Includes gas or gas mixture.
  • 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.
  • 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 gas or gas mixture with the aid of which the filler material is applied to the material to be coated Surface of the substrate material is usually conducted in one or more gas pressure vessels, for example one or more gas tanks, stored under high pressure.
  • gas pressure vessels for example one or more gas tanks
  • the liquefied gas is converted into the gaseous state.
  • a pressure increase is required.
  • air and / or helium are also suitable for the powdered filler gas carrying a nitrogen, argon, neon, krypton, Xenon, oxygen, a gas containing hydrogen, a gas containing carbon, in particular carbon dioxide, or mixtures of the aforementioned gases and Mixtures of these gases with helium.
  • the proportion of helium in the total gas can be up to 90% by volume.
  • a helium content of 10 to 50% by volume is preferred Gas mixture observed.
  • the layers produced in this way adhere very well to a wide variety of substrate materials, for example on metal, metal alloys, ceramics, glass, plastics and composite materials.
  • the coatings are of high quality, have an extraordinary low porosity and have extremely smooth spray surfaces, so that rework is usually not necessary.
  • the gases mentioned have one sufficient density and speed of sound to meet the required high To be able to ensure speeds of the powder particles.
  • the gas can contain inert and / or reactive gases. With the gases mentioned is the manufacture of very dense and particularly uniform coatings possible, which also characterized by their hardness and strength.
  • the layers point extremely low oxide levels.
  • substrate is not heated by a flame or a plasma, so 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 gas or gas mixture be buffered. It is conceivable that the hot gas generation directly in the Buffer tank, i.e. the gas or gas mixture stored for buffering to heat in the buffer tank. This seems advantageous because in this case with With the help of a control unit, the desired pressure and temperature can be easily achieved for the gas jet carrying the powdered filler material can.
  • the object of the present invention is the method mentioned at the outset and to further develop the device, in particular the efficiency and the Increase flexibility.
  • the task is solved for the method in that the gas or Gas mixture is heated after leaving the gas buffer container.
  • the object is achieved for the device in that the device for heating the gas or gas mixture in the flow direction after the Gas buffer container is arranged.
  • the advantage of the invention is that on the one hand only the gas and directly required not the entire amount of buffered gas is heated and thus the hot gas generation becomes more efficient, easier to set and cheaper.
  • the energy efficiency can further and also the flexibility increase.
  • the gas line must between the buffer container and the device for mixing the powder Filler material with the gas or gas mixture are thermally insulated and / or the heat loss in this line when the gas or gas mixture is heated be taken into account.
  • thermal insulation leads to thick relatively stiff and little or not flexible cables.
  • the hot gas can be generated by means of an electrical resistance heater. This has the advantage of easy-to-use and less expensive heating.
  • the gas or gas mixture can also be by means of a flame burner or a plasma torch. These options are usually energetic very cheap. Inductive heating can also be used (Induction heating) can be provided for heating the gas or gas mixture.
  • the gas jet can reach a temperature in the range between 30 and 1000 ° C, preferably heated between 100 and 800 ° C, all known powdered spray materials can be used, for example spray powder made of metals, metal alloys, hard materials, ceramics and / or plastics.
  • a gas jet with a Pressure of 5 to 50 bar can be used.
  • gas pressures in the range of 21 are particularly suitable up to 50 bar.
  • Excellent spray results were achieved, for example, with gas pressures of about 35 bar.
  • the high pressure gas supply can for example by method described in the own German patent application DE 197 16 414.5 or the gas supply system described there can be ensured.
  • the powder particles can advantageously at a speed of 300 to 1600 m / s can be accelerated.
  • Speeds are particularly suitable the powder particles between 1000 and 1600 m / s, particularly preferred between 1250 and 1600 m / s, because 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 invention also offers the possibility in connection with automation and with computer-controlled movement of the substrate or the device for Mixing the powdered filler material with the gas or gas mixture or the spray gun the thermal spray process particularly quickly and to perform inexpensively.

Landscapes

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

Claims (13)

  1. Procédé de revêtement de matériaux substrat par pulvérisation thermique, le gaz ou le mélange gazeux étant acheminé à partir d'au moins un récipient pressurisé à gaz dans un récipient tampon à gaz et de ce récipient tampon à gaz vers un dispositif en vue du mélange d'un matériau d'addition pulvérulent avec le gaz ou le mélange gazeux, le gaz ou le mélange gazeux étant chauffé et le matériau d'addition étant acheminé à l'aide du gaz ou du mélange gazeux sur la surface à revêtir du matériau substrat, caractérisé en ce que le gaz ou le mélange gazeux n'est chauffé qu'après avoir quitté le récipient tampon à gaz.
  2. Procédé selon la revendication 1, caractérisé en ce que le gaz ou le mélange gazeux est chauffé immédiatement avant le dispositif en vue du mélange du matériau d'addition pulvérulent avec le gaz ou le mélange gazeux.
  3. Procédé selon l'une quelconque des revendications 1 ou 2, caractérisé en ce que le gaz ou le mélange gazeux est chauffé à l'aide d'un chauffage à résistance électrique.
  4. Procédé selon l'une quelconque des revendications 1 ou 2, caractérisé en ce que le gaz ou le mélange gazeux est chauffé à l'aide d'un brûleur à flammes ou à l'aide d'un brûleur à plasma.
  5. Procédé selon l'une quelconque des revendications 1 ou 2, caractérisé en ce que le gaz ou le mélange gazeux est chauffé par échauffement inductif.
  6. Procédé selon l'une quelconque des revendications 1 à 5, caractérisé en ce que le gaz ou le mélange gazeux est chauffé à une température pour la pulvérisation thermique dans le domaine comprise entre 30 et 1000°C, de préférence, comprise entre 100 et 800°C.
  7. Procédé selon l'une quelconque des revendications 1 à 6, caractérisé en ce que l'on utilise, en tant que récipient tampon à gaz, un faisceau de bouteilles à gaz.
  8. Dispositif en vue du revêtement de matériaux substrat par pulvérisation thermique, le dispositif comprenant au moins un récipient pressurisé à gaz, au moins un récipient tampon à gaz, un dispositif en vue du mélange d'un matériau d'addition pulvérulent avec le gaz ou le mélange gazeux et un dispositif en vue du chauffage du gaz ou du mélange gazeux, ainsi que des conduits pour le gaz ou le mélange gazeux provenant du récipient pressurisé à gaz dans le récipient tampon à gaz et de celui-ci au dispositif en vue du mélange du matériau d'addition pulvérulent avec le gaz ou le mélange gazeux, caractérisé en ce que le dispositif est disposé, en vue du chauffage du gaz ou du mélange gazeux en direction de l'écoulement, seulement après le récipient tampon à gaz.
  9. Dispositif selon la revendication 8, caractérisé en ce que le dispositif en vue du chauffage du gaz ou du mélange gazeux est disposé immédiatement avant le dispositif en vue du mélange du matériau d'addition pulvérulent avec le gaz ou le mélange gazeux.
  10. Dispositif selon l'une quelconque des revendications 8 ou 9, caractérisé en ce que le dispositif en vue du chauffage du gaz ou du mélange gazeux comprend un chauffage à résistance électrique.
  11. Dispositif selon l'une quelconque des revendications 8 ou 9, caractérisé en ce que le dispositif en vue du chauffage du gaz ou du mélange gazeux comprend un brûleur à flammes ou un brûleur à plasma.
  12. Dispositif selon l'une quelconque des revendications 8 or 9, caractérisé en ce que le dispositif en vue du chauffage du gaz ou du mélange gazeux comprend un échauffement inductif.
  13. Dispositif selon l'une quelconque des revendications 8 à 12, caractérisé en ce que le récipient tampon à gaz se compose d'un faisceau de bouteilles à gaz.
EP98123464A 1997-12-18 1998-12-11 Production de gaz chaud pour la pulvérisation thermique Expired - Lifetime EP0924315B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19756594A DE19756594A1 (de) 1997-12-18 1997-12-18 Heißgaserzeugung beim thermischen Spritzen
DE19756594 1997-12-18

Publications (2)

Publication Number Publication Date
EP0924315A1 EP0924315A1 (fr) 1999-06-23
EP0924315B1 true EP0924315B1 (fr) 2004-03-10

Family

ID=7852562

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98123464A Expired - Lifetime EP0924315B1 (fr) 1997-12-18 1998-12-11 Production de gaz chaud pour la pulvérisation thermique

Country Status (2)

Country Link
EP (1) EP0924315B1 (fr)
DE (2) DE19756594A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1806429A1 (fr) 2006-01-10 2007-07-11 Siemens Aktiengesellschaft Appareil et procédé de pulverisation à froid avec écoulement gazeux module
EP1806183A1 (fr) 2006-01-10 2007-07-11 Siemens Aktiengesellschaft Ensemble de buses et procédé de projection par gaz froid
DE102012000816A1 (de) 2012-01-17 2013-07-18 Linde Aktiengesellschaft Verfahren und Vorrichtung zum thermischen Spritzen
DE102012000817A1 (de) 2012-01-17 2013-07-18 Linde Aktiengesellschaft Gasheizvorrichtung, Gasheizeinrichtung wowie Anordnung zum thermischen Spritzen mit zugehörigem Verfahren

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6139913A (en) * 1999-06-29 2000-10-31 National Center For Manufacturing Sciences Kinetic spray coating method and apparatus
JP3918379B2 (ja) 1999-10-20 2007-05-23 トヨタ自動車株式会社 溶射方法、溶射装置及び粉末通路装置
RU2183695C2 (ru) * 2000-08-25 2002-06-20 Общество С Ограниченной Ответственностью Обнинский Центр Порошкового Напыления Способ получения покрытий
DE102005053731A1 (de) 2005-11-10 2007-05-24 Linde Ag Vorrichtung zur Hochdruckgaserhitzung
DE102008026032A1 (de) 2008-05-30 2009-12-03 Linde Aktiengesellschaft Kaltgasspritzanlage und Verfahren zum Kaltgasspritzen
DE102009009474B4 (de) 2009-02-19 2014-10-30 Sulzer Metco Ag Gasspritzanlage und Verfahren zum Gasspritzen
JP6475829B2 (ja) 2014-07-03 2019-02-27 プランゼー エスエー 層の製造方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1326116A (en) * 1970-09-24 1973-08-08 Saviem Metallising machines
SE455603B (sv) * 1985-12-03 1988-07-25 Inst Materialovedenia Akademii Detonationsgasanleggning for paforande av beleggningar pa arbetsstycken
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
US5459811A (en) * 1994-02-07 1995-10-17 Mse, Inc. Metal spray apparatus with a U-shaped electric inlet gas heater and a one-piece electric heater surrounding a nozzle
US5932293A (en) * 1996-03-29 1999-08-03 Metalspray U.S.A., Inc. Thermal spray systems

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1806429A1 (fr) 2006-01-10 2007-07-11 Siemens Aktiengesellschaft Appareil et procédé de pulverisation à froid avec écoulement gazeux module
EP1806183A1 (fr) 2006-01-10 2007-07-11 Siemens Aktiengesellschaft Ensemble de buses et procédé de projection par gaz froid
US7631816B2 (en) 2006-01-10 2009-12-15 Siemens Aktiengesellschaft Cold spraying installation and cold spraying process with modulated gas stream
DE102012000816A1 (de) 2012-01-17 2013-07-18 Linde Aktiengesellschaft Verfahren und Vorrichtung zum thermischen Spritzen
DE102012000817A1 (de) 2012-01-17 2013-07-18 Linde Aktiengesellschaft Gasheizvorrichtung, Gasheizeinrichtung wowie Anordnung zum thermischen Spritzen mit zugehörigem Verfahren
EP2617868A1 (fr) 2012-01-17 2013-07-24 Linde Aktiengesellschaft Procédé et dispositif de pulvérisation thermique
EP2618070A1 (fr) 2012-01-17 2013-07-24 Linde Aktiengesellschaft Dispositif de chauffage au gaz, installation de chauffage au gaz et dispositif de pulvérisation thermique avec procédé associé

Also Published As

Publication number Publication date
DE19756594A1 (de) 1999-06-24
DE59810950D1 (de) 2004-04-15
EP0924315A1 (fr) 1999-06-23

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