EP0335193A2 - Procédé pour la fabrication d'articles - Google Patents

Procédé pour la fabrication d'articles Download PDF

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Publication number
EP0335193A2
EP0335193A2 EP89104699A EP89104699A EP0335193A2 EP 0335193 A2 EP0335193 A2 EP 0335193A2 EP 89104699 A EP89104699 A EP 89104699A EP 89104699 A EP89104699 A EP 89104699A EP 0335193 A2 EP0335193 A2 EP 0335193A2
Authority
EP
European Patent Office
Prior art keywords
layer
base body
chamber
mbar
hip
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Withdrawn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
EP89104699A
Other languages
German (de)
English (en)
Other versions
EP0335193A3 (fr
Inventor
Hartmut Dr.-Ing. Kaiser
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.)
Thyssen Guss AG
Original Assignee
Thyssen Guss 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 Thyssen Guss AG filed Critical Thyssen Guss AG
Publication of EP0335193A2 publication Critical patent/EP0335193A2/fr
Publication of EP0335193A3 publication Critical patent/EP0335193A3/fr
Withdrawn legal-status Critical Current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
    • 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 producing molded parts and components, which are composed of a base body and a layer applied to this body, which are connected to one another by the hot isostatic press method (HIP method), the layer comprising a same or different material as the base body.
  • HIP method hot isostatic press method
  • the present invention is therefore based on the object of applying the thickest possible layer with a small pore volume without disturbing foreign phases, which can then be subjected directly to the HIP process in order to obtain a homogeneous base and layer material of the same type, or a heterogeneous one with different base and To produce layer material, molded body or a component, in the latter case both materials are homogeneous in themselves. In any case, the transition area should have a diffusive bond.
  • the diffusion zone is set by optimizing the HIP parameters, whereby the properties are to be harmonized.
  • the solution to this problem is that on the base body at a temperature of at least 600 ° C by means of plasma spraying at a chamber pressure of 140-180 mbar, which is set to at least 10-2 mbar after evacuation of the chamber more than 5 mm thick are sprayed on and the layer is connected to the base body by the HIP process at least 500 ° C. and at least 500 bar diffusively and without pores.
  • a reducing gas is advantageously added in addition to the inert gas.
  • the advantage of the method according to the invention is above all that a vacuum atmosphere in the chamber and an optimal base body and layer temperature of more than 600 ° C can be maintained during the coating process without a disturbing oxygen influence taking place, which in the sprayed layer, an optimal residual porosity of less than 3% is achieved, so that the subsequent HIP process makes a pore-free molded body possible, the two starting components - base body and layer with a thickness of more than 5 mm - are diffusively connected to one another.
  • a base body A) is produced, which is also produced by powder metallurgy by means of encapsulation using the HIP process can be and which consists of a nickel-based superalloy.
  • the base body A) is provided with a layer C) of Ni-based superalloy in a vacuum chamber, in which inert gas and a reducing gas are present, at a pressure of approx. 160 mbar after the plasma spraying process
  • the chamber was evacuated to at least 10 ⁇ 2 mbar and the necessary reducing atmosphere was then created by flooding with the appropriate gas mixture.
  • the special spray parameters for the plasma gases of 40 to 60 l argon per minute and 7 to 12 l hydrogen gas per minute are also prerequisites for producing these high-quality, technologically demanding layers.
  • the surface of the hot basic body is then coated with known powder conveying of the plasma spraying process, without interruption by cooling or heat compensation phases up to a minimum layer thickness of 26 mm.
  • This sprayed layer C) adheres adhesively to the carrier material A) in the transition phase B).
  • the targeted procedure thus enables a low-pore and foreign phase-free layer production, which results in a shaped body by the subsequent hot isostatic pressing (HIP).
  • the HIP process takes place at a temperature of at least 500 ° C and a pressure of at least 500 bar.
  • Figures 1 and 2 show a molded article produced according to this process, Figure 1 showing a micro-grinding in 500x magnification of a layer C) made of a heat-resistant Ni-base superalloy on a base body A) made of the same material with a pronounced transition zone B) before the implementation of the HIP process and Figure 2 shows the same part as Figure 1 but after the HIP process has been carried out.
  • the transition phase B) has disappeared and the base body and layer form a homogeneous, completely dense structure without Pores D), a diffusive bond being present in the transition phase B) which can no longer be determined, which forms the basis of high strength in the entire material composite.

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)
  • Powder Metallurgy (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)
  • Coating By Spraying Or Casting (AREA)
EP89104699A 1988-03-30 1989-03-16 Procédé pour la fabrication d'articles Withdrawn EP0335193A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19883810851 DE3810851C2 (de) 1988-03-30 1988-03-30 Verfahren zur Herstellung von Formteilen
DE3810851 1988-03-30

Publications (2)

Publication Number Publication Date
EP0335193A2 true EP0335193A2 (fr) 1989-10-04
EP0335193A3 EP0335193A3 (fr) 1989-11-15

Family

ID=6351102

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89104699A Withdrawn EP0335193A3 (fr) 1988-03-30 1989-03-16 Procédé pour la fabrication d'articles

Country Status (2)

Country Link
EP (1) EP0335193A3 (fr)
DE (1) DE3810851C2 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2691477A1 (fr) * 1992-05-22 1993-11-26 Neyrpic Revêtements métalliques à base d'alliages amorphes résistant à l'usure et à la corrosion, procédés d'obtention et applications aux revêtements antiusure pour matériel hydraulique.
WO1999023272A1 (fr) * 1997-11-03 1999-05-14 Siemens Aktiengesellschaft Procede de realisation d'une couche de protection sur un corps de base conçu pour etre soumis a l'action d'un gaz chaud, et produit ainsi conçu
EP1541705A3 (fr) * 2003-11-21 2005-07-06 Seiko Epson Corporation Méthode pour traiter la périphérie d'un cylindre, procédés de production de rouleau de développement et de tambour photoconducteur, ainsi que rouleau de développement et tambour photoconducteur.

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE348961C (sv) * 1971-03-15 1982-08-30 Asea Ab Forfarande for framstellning av en sintrad pulverkropp
DE2328441A1 (de) * 1973-06-05 1974-12-19 Arnold Muellenberg Verfahren zum herstellen von geraetschaften, insbesondere von spinnkaesten
US4145481A (en) * 1977-08-03 1979-03-20 Howmet Turbine Components Corporation Process for producing elevated temperature corrosion resistant metal articles
GB2025469A (en) * 1978-07-17 1980-01-23 United Technologies Corp Plasma sprayed MCrAlY coatings
NL7905973A (nl) * 1979-08-03 1981-02-05 Skf Ind Trading & Dev Werkwijze voor het aanbrengen van een dichte, harde, hechte en slijtvaste laag van cermets of keramisch materiaal op een metalen voorwerp en aldus verkregen voorwerp.
JPS5939505B2 (ja) * 1982-05-18 1984-09-25 株式会社黒木工業所 羽口の表面処理方法
DE3434529C2 (de) * 1983-10-21 1988-12-22 J. Wizemann Gmbh U. Co, 7000 Stuttgart Verfahren zur Herstellung eines metallischen Verbundgegenstands
GB2154614B (en) * 1984-02-22 1987-11-18 H I P Densified coatings by application of direct fluid pressure
DE3538390A1 (de) * 1985-10-29 1987-04-30 Deutsche Forsch Luft Raumfahrt Beschichtung fuer ein substrat und verfahren zu dessen herstellung
DE3609359A1 (de) * 1986-03-20 1987-09-24 Reimbold & Strick Verfahren zur herstellung von elektrisch leitfaehig und oxidationsbestaendig beschichteten graphit-formkoerpern

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2691477A1 (fr) * 1992-05-22 1993-11-26 Neyrpic Revêtements métalliques à base d'alliages amorphes résistant à l'usure et à la corrosion, procédés d'obtention et applications aux revêtements antiusure pour matériel hydraulique.
EP0576366A1 (fr) * 1992-05-22 1993-12-29 Gec Alsthom Neyrpic Revêtements métalliques à base d'alliages amorphes résistant à l'usure et à la corrosion, procédé d'obtention et applications aux revêtements anti-usure pour matériel hydraulique
WO1999023272A1 (fr) * 1997-11-03 1999-05-14 Siemens Aktiengesellschaft Procede de realisation d'une couche de protection sur un corps de base conçu pour etre soumis a l'action d'un gaz chaud, et produit ainsi conçu
EP1541705A3 (fr) * 2003-11-21 2005-07-06 Seiko Epson Corporation Méthode pour traiter la périphérie d'un cylindre, procédés de production de rouleau de développement et de tambour photoconducteur, ainsi que rouleau de développement et tambour photoconducteur.
CN100353260C (zh) * 2003-11-21 2007-12-05 精工爱普生株式会社 电摄影成像设备的圆周面的加工方法、显影辊和感光鼓

Also Published As

Publication number Publication date
DE3810851C2 (de) 1995-09-28
DE3810851A1 (de) 1989-10-12
EP0335193A3 (fr) 1989-11-15

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