EP0677592B1 - Procédé pour améliorer l'adhérence de revêtements par pulvérisation thermique, composés de métaux, oxydes métalliques et matériaux durs - Google Patents

Procédé pour améliorer l'adhérence de revêtements par pulvérisation thermique, composés de métaux, oxydes métalliques et matériaux durs Download PDF

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Publication number
EP0677592B1
EP0677592B1 EP95105427A EP95105427A EP0677592B1 EP 0677592 B1 EP0677592 B1 EP 0677592B1 EP 95105427 A EP95105427 A EP 95105427A EP 95105427 A EP95105427 A EP 95105427A EP 0677592 B1 EP0677592 B1 EP 0677592B1
Authority
EP
European Patent Office
Prior art keywords
metals
metal oxides
hard materials
thermally sprayed
enhancing
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
EP95105427A
Other languages
German (de)
English (en)
Other versions
EP0677592A1 (fr
Inventor
Jochen Dr. Spriestersbach
Wolf-Dieter Dr. Schulz
Manfred Seidel
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.)
Grillo Werke AG
Original Assignee
Grillo Werke 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 Grillo Werke AG filed Critical Grillo Werke AG
Publication of EP0677592A1 publication Critical patent/EP0677592A1/fr
Application granted granted Critical
Publication of EP0677592B1 publication Critical patent/EP0677592B1/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
    • C23C4/18—After-treatment

Definitions

  • the present invention relates to a method for Improvement of the adhesive strength of thermal spray coatings from metals, metal oxides and hard materials, in particular made of zinc, aluminum and their alloys.
  • Thermal spray coatings play a role in surface finishing of metals, but also of plastics, concrete, cardboard etc. an important role. Among other things, they improve the temperature resistance, the wear behavior and the electrical Conductivity of the substrate materials.
  • EP-A 0 451 512 describes a method for coating of blades of a rotating thermal machine, whereby a special one in the high-speed flame spraying process Protective layer is applied to the blades.
  • This Layer can then be a top layer of polyurethane reaction lacquer received on a plastic basis.
  • the Surface roughness can be reduced.
  • Two-component paints are therefore preferably used; see. Column 5, line 52 to column 6, line 6. It's about that Reduce the surface roughness and not about the adhesive strength that applied in the high-speed flame spraying process Layer.
  • DE-PS 38 25 200 describes a method for coating of plastic parts, in which the roughened Plastic surface sprayed with a metal layer Plastic is impregnated. According to claim 8, this can Plastic can be a low-viscosity polyurethane system. By this measure will ensure perfect liability of the sprayed Metal on the plastic ensures a high specific Made conductivity and a safe protection against external mechanical attacks guaranteed; see. Column 1, rows 61 to 65. At the same time, however, the DE-PS 38 25 200 the teaching that the transfer of flame spraying of metals on metals on the coating of plastics with metals leads to considerable difficulties; see. Column 1, lines 41 until 46.
  • Thermal spraying of, for example, zinc, aluminum and their alloys, for example with magnesium is often the only way of protecting against corrosion by metal coatings under construction site conditions, since other processes such as hot-dip galvanizing and galvanizing are hardly possible on site.
  • the production of thermal spray coatings on metals usually requires the following technological steps to be carried out in accordance with the quality: degreasing, blasting, spraying and in general post-treatment.
  • the purity and roughness of the surface of the substrate are of particular importance. It is usually required that a standard degree of purity Sa 3 according to DIN 55928, part 4 is achieved and that the average roughness R z is at least 25 ⁇ m. A certain sharpness of the profile is often necessary.
  • Spraying method for example flame spraying, arc spraying and plasma spraying as these are different Processes generate different temperatures which are necessary for the melting of the spray material.
  • Optimally produced layers have adhesive strengths from 20 to 50 MPa.
  • the spray layers are depending on the thickness and spray type more or less dense. To a sufficient To ensure corrosion protection, they usually have densities from 100 to 300 ⁇ m thick.
  • One-component, moisture-curing polyurethane lacquers have so far been used only to severely rusted or to treat corroded steel substrates, whereby obviously the residual moisture bound in the subsoil and rust residues be solidified on the steel surface.
  • This one-component Polyurethane paints generally come in low viscosity Solutions in organic solvents for use that are able to create columns, overlaps and structured Detect substrates with good creep ability.
  • a one-component, moisture-curing polyurethane lacquer is for example from the company Steelpaint GmbH, Kitzingen offered.
  • the adhesive strength increases due to the invention Treatment with spray zinc and spray aluminum layers around the factor 3.
  • the adhesive strength increases to about 20 up to 25 MPa.
  • a degreased workpiece made of steel is prepared by means of compressed air jets up to the degree of cleaning Sa 3 and an average roughness depth R z of 45 ⁇ m. Subsequently, the workpiece prepared in this way is cleaned of any adhering blasting impurities as well as possible using compressed air and provided with a 150 ⁇ m thick spray coating made of zinc.
  • the adhesive strength measurements carried out by forehead deduction result in values between 5 and 7 MPa.
  • the spray metal layer is then thinly coated with a normal, commercially available, low-viscosity 1-component PU coating material by brush application so that no measurable layer build-up takes place. After the coating has hardened, the adhesive strength of the sprayed metal layer, measured by the same method, is 15 to 20 MPa.
  • a degreased steel workpiece is prepared using compressed air jets up to a cleaning level of 2.5 and an average roughness depth R z of 25 ⁇ m.
  • a 100 ⁇ m thick ceramic Al 2 O 3 layer is then applied to the surface which has not been cleaned further by means of powder flame spraying.
  • the adhesive strength measurements carried out result in 12 MPa.
  • the ceramic spray coating is then thinly coated with a normal, commercially available 1-component PU coating material using compressed air spraying. After the coating has hardened, the adhesive strength of the spray ceramic layer is more than 25 MPa.

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)

Claims (2)

  1. Procédé pour améliorer l'adhérence de revêtements appliqués par projection thermique, formés de métaux, d'oxydes de métaux et de matériaux durs, en particulier de zinc, d'aluminium et de leurs alliages, sur de l'acier, caractérisé en ce que les revêtements projetés sont revêtus, après la projection, d'une résine de polyuréthane monocomposant, durcissant sous l'effet de l'humidité, de telle façon que la résine pénètre certes dans les pores du métal appliqué par projection, mais ne forme pas de film fermé.
  2. Procédé selon la revendication 1, caractérisé en ce que la résine de polyuréthane est appliquée sous la forme d'une solution peu visqueuse dans des solvants organiques.
EP95105427A 1994-04-14 1995-04-11 Procédé pour améliorer l'adhérence de revêtements par pulvérisation thermique, composés de métaux, oxydes métalliques et matériaux durs Expired - Lifetime EP0677592B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4412795 1994-04-14
DE4412795 1994-04-14

Publications (2)

Publication Number Publication Date
EP0677592A1 EP0677592A1 (fr) 1995-10-18
EP0677592B1 true EP0677592B1 (fr) 1998-12-30

Family

ID=6515339

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95105427A Expired - Lifetime EP0677592B1 (fr) 1994-04-14 1995-04-11 Procédé pour améliorer l'adhérence de revêtements par pulvérisation thermique, composés de métaux, oxydes métalliques et matériaux durs

Country Status (3)

Country Link
EP (1) EP0677592B1 (fr)
AT (1) ATE175246T1 (fr)
DE (1) DE59504660D1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997045566A1 (fr) * 1996-05-24 1997-12-04 Nippon Steel Hardfacing Co., Ltd. Procede pour renforcer un revetement pulverise
DE19748105C1 (de) * 1997-10-31 1998-10-29 Grillo Werke Ag Verfahren zur Verbesserung der Korrosionsbeständigkeit von Stahlbeton
CN113005796B (zh) * 2021-03-01 2022-06-21 江苏卓尔诺光电科技有限公司 一种耐腐蚀海工光缆用镀锌钢绞线及其制备工艺

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1115121A (fr) * 1954-11-26 1956-04-19 Schneider Werke G M B H Procédé de revêtement d'objets en métaux ferreux et objets obtenus par ce procédé
FR1355378A (fr) * 1962-05-07 1964-03-13 Metallurg Ges Fuer Metallurg P Procédé pour couvrir des objets d'une couche de matière plastique
GB1304072A (fr) * 1970-04-29 1973-01-24
JPS5440885A (en) * 1977-09-07 1979-03-31 Iwasaki Electric Co Ltd Laminate with metal base and its making method
JPS57171472A (en) * 1981-04-16 1982-10-22 Sumitomo Metal Ind Ltd Corrosion-inhibition of steel material to be used under atmosphere in contact with strong alkali of concrete
DE3317193A1 (de) * 1983-05-11 1984-11-15 Georg Börner Chemisches Werk für Dach- und Bautenschutz GmbH & Co KG, 6430 Bad Hersfeld Verwendung eines expandierenden polyurethanklebstoffes zum verbinden von daemmstoffen mit gebaeudeteilen
DE3339682A1 (de) * 1983-11-02 1985-05-15 BGB-Gesellschaft Reinmar John, Rainer-Leo Meyer & Olga Meyer geb. Klöpfer, 7580 Bühl Beschichtungsmasse fuer stahl und eisen, deren verwendung, und verfahren zur erzeugung eines schutzueberzuges
JPS6164441A (ja) * 1984-09-07 1986-04-02 新日本製鐵株式会社 重防食被覆鋼材
JPS62136276A (ja) * 1985-12-09 1987-06-19 Toho Kasei Kk 定着用ヒ−トロ−ルの加工方法
DE3824771C1 (fr) * 1988-07-21 1990-04-05 Teroson Gmbh, 6900 Heidelberg, De
DE3825200C1 (en) * 1988-07-25 1990-02-01 Aeg Isolier- Und Kunststoff Gmbh, 3500 Kassel, De Process for coating plastic components with metals
JPH03249187A (ja) * 1990-02-27 1991-11-07 Hino Motors Ltd 自動車用外装部品の光輝処理方法

Also Published As

Publication number Publication date
EP0677592A1 (fr) 1995-10-18
DE59504660D1 (de) 1999-02-11
ATE175246T1 (de) 1999-01-15

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