WO1988004698A2 - Procede pour la fabrication et/ou le redimensionnement de pieces, et piece ainsi realisee - Google Patents

Procede pour la fabrication et/ou le redimensionnement de pieces, et piece ainsi realisee Download PDF

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Publication number
WO1988004698A2
WO1988004698A2 PCT/EP1987/000782 EP8700782W WO8804698A2 WO 1988004698 A2 WO1988004698 A2 WO 1988004698A2 EP 8700782 W EP8700782 W EP 8700782W WO 8804698 A2 WO8804698 A2 WO 8804698A2
Authority
WO
WIPO (PCT)
Prior art keywords
layer
component
substrate
metallic
spray
Prior art date
Application number
PCT/EP1987/000782
Other languages
German (de)
English (en)
Other versions
WO1988004698A3 (fr
Inventor
Heiko Gruner
Original Assignee
Plasmainvent 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 Plasmainvent Ag filed Critical Plasmainvent Ag
Priority to EP88900225A priority Critical patent/EP0345257A1/fr
Priority to PCT/EP1987/000782 priority patent/WO1988004698A2/fr
Publication of WO1988004698A2 publication Critical patent/WO1988004698A2/fr
Publication of WO1988004698A3 publication Critical patent/WO1988004698A3/fr

Links

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
    • C23C4/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
    • C23C4/137—Spraying in vacuum or in an inert atmosphere
    • 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
    • C23C4/18—After-treatment

Definitions

  • the invention relates to a method for the production and / or redimensioning of highly stressed metallic components and layers, and to such a metallic component.
  • layers to highly stressed metallic components, for example turbine blades and the like, in a plasma spraying process, which improve the resistance of the component to cavitation, abrasion and erosion.
  • layers do not form a completely load-bearing component of the component itself.
  • layers of this type can at least partially detach from the substrate under extreme mechanical stresses, in particular bending stresses.
  • the invention has for its object to provide a highly stressed metallic component, which is provided with a load-bearing coating with significantly higher application rates and less time and can be provided repeatedly.
  • a spray layer that is chemically unchanged compared to the spray powder is applied to a metallic substrate
  • the applied spray layer is at least partially remelted with the aid of a transferred arc into a homogeneous, fine crystalline layer
  • steps a) and b) are optionally repeated one or more times.
  • a highly stressed metallic component can be produced whose abrasion resistance corresponds to that of the substrate material, which permits a practically unlimited layer thickness
  • the layer is perfectly homogeneous and non-porous and does not require any thermal post-treatment to compensate for any properties of the substrate that may have been lost during the coating.
  • the coating can be carried out without any impairment of the mechanical properties of the substrate, and later repairs are possible without removing the layer. Both the layer and the substrate are repairable, and annealing the substrate in no way affects the layer.
  • the adhesion of the layer is so good that it can withstand deformations and vibrations during operation without being destroyed or tired.
  • the surface of the metallic component is advantageously sputter-cleaned in a vacuum with a transferred arc before coating, as a result of which a practically oxide-free surface of the substrate is achieved before the coating is applied.
  • the coating can either be advantageously carried out in the vacuum plasma spraying process (VPS) or advantageously in the protective gas plasma spraying process with intensive cooling of the component.
  • the component is preferably cooled by means of liquid argon.
  • a further development of the method according to the invention is that an additional material build-up is carried out by means of plasma welding with a transferred arc during or after the remelting of the spray layer in selected areas of the surface of the component.
  • an additional material build-up can be carried out by means of plasma welding with transferred material in selected areas of the surface of the component Arc are carried out.
  • an additional spray layer of any material can be applied as a protective layer in the plasma spray process.
  • This protective layer can be adapted to the special stresses and requirements of the component and is used, for example, to extend the life of the component.
  • the substrate in the boundary to the spray layer is expediently also melted on, it being possible for alloys to form with the remelted layer when the substrate is being melted.
  • the spray layer is expediently applied with a transferred arc and preferably with multiple powder injection into the plasma flame at an application rate of up to 20 kg / h.
  • a highly stressed metallic component with a metallic layer sprayed onto a metallic substrate is characterized in that the layer is a supporting component of the component and largely corresponds to that of the substrate in mechanical properties.
  • the thickness of the layer can be several cm and at least 0.5 mm.
  • the layer with a targeted layer thickness distribution is advantageously applied to the substrate in such a way that the desired final shape of the component results.
  • the substrate and the layer can expediently consist of a rustproof, martensitic chromium-nickel steel.
  • the object of the invention can also be achieved in that the substrate is made of a normal steel selected from a mechanical point of view and the layer as a supporting component of the component made of a corrosion-resistant metal or a corrosion-resistant alloy, such as a stainless steel.
  • FIG. 3 shows a component as in FIG. 1 after the U has melted the spray layer
  • FIG. 4 shows a section of a component with an additional material structure applied to the spray layer by plasma welding
  • FIG. 5 shows a component with an additional material structure applied under the spray layer by means of plasma welding
  • 6 shows a component as in FIG. 1 with a substrate
  • FIG. 1 shows a schematic representation of a metallic component 1, on the metallic substrate 2 of which a spray layer 3 which is chemically unchanged compared to the wettable powder is applied in a plasma spraying process.
  • the spray layer 3 as indicated in FIG. 2, is applied true to shape by corresponding beam guidance of the plasma jet, i.e. with a specifically set thickness as required. This is particularly important when redimensioning a component 1 that has been machined to different thicknesses during operation, for example a turbine blade.
  • the coating with the spray layer 3 can be carried out in the vacuum plasma spraying process (VPS), or also in the protective gas plasma spraying process, but then with intensive cooling of the component 1, in order to reliably avoid mechanical modification of the component 1.
  • the required cooling of component 1 can be carried out, for example, using liquid argon.
  • the applied spray layer 3 (FIG. 1) is remelted into a homogeneous, finely crystalline layer 4 with the aid of a transferred arc, in such a way that the substrate 2 is also melted in its boundary 5 to the spray layer 3.
  • an alloy is formed with the spray layer 3 melted into the layer 4, which leads to an intimate connection between the layer 4 and the substrate 2.
  • the alloying process and the intimacy of the connection of the Layer 4 with the substrate 2 is significantly promoted in that the surface of the metallic component 1 is sputter-cleaned in a vacuum with a transferred arc before coating. This results in an oxide-free surface for the application of the spray layer 3.
  • the remelted layer 4 has become a supporting component of the component 1 and corresponds largely to the mechanical properties of that of the substrate 2.
  • the thickness of the layer 4 can be several cm and is at least 0.5 mm.
  • the spray layer 3 or the remelted layer 3 is applied to the substrate 2 with a targeted layer thickness distribution in such a way that the desired final shape of the component 1 is obtained essentially without further processing.
  • the applied spray layer 3 does not need to be completely remelted into a homogeneous, finely crystalline layer 4 in all cases. It may be sufficient to perform the melting only at selected or exposed locations on the spray layer 3.
  • an additional material structure 6 can be carried out by means of plasma welding with a transferred arc, since the spray layer 3 or remelted layer 4 can be welded is.
  • an additional material structure 7 can also be carried out by means of plasma welding with a transferred arc before coating in selected areas of the surface of the component 1. This leads to an advantage when applying the spray layer 3 in that it can be sprayed with a relatively uniform thickness.
  • Spray layer 3 is expediently applied with a transferred arc and preferably with multiple powder injection into the plasma flame at an application rate of up to 20 kg / h.
  • an additional spray layer 8 of any material to the component 1 (FIG. 6) as a protective layer adapted to the special stresses and requirements of component 1, for example to extend the service life, in the plasma spraying process (PSV) .
  • the substrate 2 and the layer 4 can for example consist of a stainless martensitic chromium-nickel steel.
  • the substrate 2 can consist of a normal steel selected from a mechanical point of view and the layer 4 as a supporting component of the component can consist of a corrosion-resistant metal or a corrosion-resistant alloy, such as a stainless steel.

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)
  • Coating By Spraying Or Casting (AREA)

Abstract

Un procédé de fabrication et/ou de redimensionnement de pièces (1) et de revêtements (4) métalliques fortement sollicités, en vue de créer à moindres frais une pièce munie d'un revêtement porteur, consiste a) à appliquer, par projection au plasma sur un substrat métallique (2), en suivant exactement sa forme, une couche de projection inchangée chimiquement par rapport à la poudre projetée, b) à faire fondre la couche de projection, à l'aide d'un arc électrique diffusé, pour obtenir une couche (4) homogène finement granulée et c) à répéter les étapes a) et b) éventuellement une ou plusieurs fois.
PCT/EP1987/000782 1987-12-15 1987-12-15 Procede pour la fabrication et/ou le redimensionnement de pieces, et piece ainsi realisee WO1988004698A2 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP88900225A EP0345257A1 (fr) 1987-12-15 1987-12-15 Procede pour la fabrication et/ou le redimensionnement de pieces, et piece ainsi realisee
PCT/EP1987/000782 WO1988004698A2 (fr) 1987-12-15 1987-12-15 Procede pour la fabrication et/ou le redimensionnement de pieces, et piece ainsi realisee

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP1987/000782 WO1988004698A2 (fr) 1987-12-15 1987-12-15 Procede pour la fabrication et/ou le redimensionnement de pieces, et piece ainsi realisee

Publications (2)

Publication Number Publication Date
WO1988004698A2 true WO1988004698A2 (fr) 1988-06-30
WO1988004698A3 WO1988004698A3 (fr) 1988-09-07

Family

ID=8165224

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1987/000782 WO1988004698A2 (fr) 1987-12-15 1987-12-15 Procede pour la fabrication et/ou le redimensionnement de pieces, et piece ainsi realisee

Country Status (2)

Country Link
EP (1) EP0345257A1 (fr)
WO (1) WO1988004698A2 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0272527A2 (fr) * 1986-12-15 1988-06-29 Société Anonyme l'Energie de l'Ouest Suisse EOS Procédé de revêtement d'un support avec une couche de métallisation et produit obtenu par celui-ci
WO1997040266A2 (fr) * 1996-04-19 1997-10-30 Engelhard Corporation Systeme de reduction des emissions nocives de moteurs diesel
US6006516A (en) * 1996-04-19 1999-12-28 Engelhard Corporation System for reduction of harmful exhaust emissions from diesel engines
FR2799523A1 (fr) * 1999-10-08 2001-04-13 Framatome Sa Procede et dispositif de reparation in-situ d'un siege d'une soupape
EP2871257A1 (fr) * 2013-11-11 2015-05-13 Siemens Aktiengesellschaft Procédé de revêtement avec procédé de refonte ultérieure

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB881381A (en) * 1956-11-30 1961-11-01 William Edward Ballard Improvements relating to cladded metals
DE2640755A1 (de) * 1975-09-15 1977-03-17 Cretella Salvatore Verfahren zur erneuernden oberflaechenbehandlung von aerodynamischen turbinen-komponenten, wie laufschaufeln und leitschaufeln
FR2342120A1 (fr) * 1976-02-27 1977-09-23 British Steel Corp Procede d'application d'un revetement dur sur un support en fer ou en acier
FR2347191A1 (fr) * 1976-04-08 1977-11-04 Stal Laval Turbin Ab Revetement protecteur sur une surface en acier
EP0034408A1 (fr) * 1980-02-13 1981-08-26 Permelec Electrode Ltd Procédé pour former un revêtement anticorrosif sur un substrat métallique servant à un electrode
EP0165565A2 (fr) * 1984-06-19 1985-12-27 Plasmainvent Ag Installation de pulvérisation à plasma sous vide
DE3426201A1 (de) * 1984-07-17 1986-01-23 BBC Aktiengesellschaft Brown, Boveri & Cie., Baden, Aargau Verfahren zum aufbringen von schutzschichten
DE3447784A1 (de) * 1984-12-20 1986-06-26 Gebrüder Sulzer AG, Winterthur Kolbenbrennkraftmaschine

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB881381A (en) * 1956-11-30 1961-11-01 William Edward Ballard Improvements relating to cladded metals
DE2640755A1 (de) * 1975-09-15 1977-03-17 Cretella Salvatore Verfahren zur erneuernden oberflaechenbehandlung von aerodynamischen turbinen-komponenten, wie laufschaufeln und leitschaufeln
FR2342120A1 (fr) * 1976-02-27 1977-09-23 British Steel Corp Procede d'application d'un revetement dur sur un support en fer ou en acier
FR2347191A1 (fr) * 1976-04-08 1977-11-04 Stal Laval Turbin Ab Revetement protecteur sur une surface en acier
EP0034408A1 (fr) * 1980-02-13 1981-08-26 Permelec Electrode Ltd Procédé pour former un revêtement anticorrosif sur un substrat métallique servant à un electrode
EP0165565A2 (fr) * 1984-06-19 1985-12-27 Plasmainvent Ag Installation de pulvérisation à plasma sous vide
DE3426201A1 (de) * 1984-07-17 1986-01-23 BBC Aktiengesellschaft Brown, Boveri & Cie., Baden, Aargau Verfahren zum aufbringen von schutzschichten
DE3447784A1 (de) * 1984-12-20 1986-06-26 Gebrüder Sulzer AG, Winterthur Kolbenbrennkraftmaschine

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0272527A2 (fr) * 1986-12-15 1988-06-29 Société Anonyme l'Energie de l'Ouest Suisse EOS Procédé de revêtement d'un support avec une couche de métallisation et produit obtenu par celui-ci
EP0272527A3 (fr) * 1986-12-15 1989-10-25 Société Anonyme l'Energie de l'Ouest Suisse EOS Procédé de revêtement d'un support avec une couche de métallisation et produit obtenu par celui-ci
WO1997040266A2 (fr) * 1996-04-19 1997-10-30 Engelhard Corporation Systeme de reduction des emissions nocives de moteurs diesel
WO1997040266A3 (fr) * 1996-04-19 1998-01-15 Engelhard Corp Systeme de reduction des emissions nocives de moteurs diesel
US6006516A (en) * 1996-04-19 1999-12-28 Engelhard Corporation System for reduction of harmful exhaust emissions from diesel engines
US6256984B1 (en) * 1996-04-19 2001-07-10 Engelhard Corporation System for reduction of harmful exhaust emissions from diesel engines
FR2799523A1 (fr) * 1999-10-08 2001-04-13 Framatome Sa Procede et dispositif de reparation in-situ d'un siege d'une soupape
EP2871257A1 (fr) * 2013-11-11 2015-05-13 Siemens Aktiengesellschaft Procédé de revêtement avec procédé de refonte ultérieure

Also Published As

Publication number Publication date
EP0345257A1 (fr) 1989-12-13
WO1988004698A3 (fr) 1988-09-07

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