EP1960484A2 - Materiau de revetement de substrats - Google Patents

Materiau de revetement de substrats

Info

Publication number
EP1960484A2
EP1960484A2 EP06828637A EP06828637A EP1960484A2 EP 1960484 A2 EP1960484 A2 EP 1960484A2 EP 06828637 A EP06828637 A EP 06828637A EP 06828637 A EP06828637 A EP 06828637A EP 1960484 A2 EP1960484 A2 EP 1960484A2
Authority
EP
European Patent Office
Prior art keywords
coating material
zinc
substrate
aluminum
weight
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Withdrawn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
EP06828637A
Other languages
German (de)
English (en)
Inventor
Stefan Sepeur
Stefan Goedicke
Nicole Reuter
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.)
Nano X GmbH
Original Assignee
Nano X 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
Application filed by Nano X GmbH filed Critical Nano X GmbH
Publication of EP1960484A2 publication Critical patent/EP1960484A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/08—Anti-corrosive paints
    • C09D5/082—Anti-corrosive paints characterised by the anti-corrosive pigment
    • C09D5/084—Inorganic compounds
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
    • C09D183/04—Polysiloxanes
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/08—Anti-corrosive paints
    • C09D5/10—Anti-corrosive paints containing metal dust
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/18—Fireproof paints including high temperature resistant paints
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D7/00—Modifying the physical properties of iron or steel by deformation
    • C21D7/02—Modifying the physical properties of iron or steel by deformation by cold working
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D7/00—Modifying the physical properties of iron or steel by deformation
    • C21D7/13—Modifying the physical properties of iron or steel by deformation by hot working

Definitions

  • the invention relates to a coating material for substrates.
  • lubricants are used for forming processes in many areas. Generally, these lubricants are sprayed into the molds to form a release layer between substrate and mold during the forming processes.
  • the disadvantage is that at high degrees of deformation and very stressed areas, the lubricant is removed unevenly. Relubrication, problems with subsequent treatments due to uneven surfaces, etc.
  • scaling In the prior art, in particular steel systems are known which avoid oxidation at high temperatures, the so-called scaling.
  • scaling or scaling is meant the oxidation of metals by direct reaction with atmospheric oxygen at higher temperatures.
  • the resulting scale layer is hard and brittle and preferably bursts from the base material when cooled again, resulting in a relatively large surface roughness.
  • EP 1 013 785 A1 describes the coating of hot-rolled sheet with a metal or a metal alloy. It is a layer of aluminum or an alloy of aluminum, iron and silicon, which is applied by hot dip (Feueralum réelle). While such a protective layer provides effective protection against scaling on heating to austenitizing temperature, it is limited in its practical use in press-hardening, which is particularly noticeable when molding complex geometries.
  • DE 102 46 614 A1 mentions that in the dipping method described in EP 1 013 785 A1 an intermetallic alloy phase would form during the coating process between the steel and the actual coating, which would be hard and brittle and would break during cold working. The resulting microcracks would cause the coating to dissolve away from the base material and thus lose its protective function. From this description and practical experience in forming steel blanks or parts it follows that the fire aluminizing is not for the Cold forming and thus not suitable for a two-stage cold and hot forming process, as it comes in the molding of complex geometries used.
  • WO 2005/021820 A1 WO 2005/021821 A1 and WO 2005/021822 A1 describe processes for producing various hardened steel parts.
  • a protective layer consisting of zinc is applied to the steel together with another oxygen-affine element (especially aluminum).
  • This protective layer is applied in WO 2005/021821 A1 in a hot-dip process, in WO 2005/021820 A1 and WO 2005/021822 A1 in a hot-dip or galvanic process.
  • all coatings that contain zinc as the main element have in common that they are very sensitive to oxidation and evaporation at the temperatures required for a mold hardening process (eg 900 ° C.
  • the corresponding protective layers do not result in a significant improvement in tribological properties compared to an unprotected steel surface in both cold and hot forming.
  • the object of the invention is thus to provide a coating material which has both a protective effect against corrosion and a tribological effect.
  • the coating material contains between 0.5 and 90% by weight, preferably 5 to 60% by weight, of lubricant for reducing the frictional resistance of the surface during deformation processes,
  • the coating material contains up to 95% by weight, preferably from 10 to 75% by weight, of a suitable binder,
  • the coating material contains between 0 and 90% by weight of pigments or fillers,
  • the coating material can be attached firmly to the surface of the substrate,
  • the coating material with the substrate in cold or hot forming processes is deformable.
  • the pigments and fillers are used here either for coloring or for additional technical functions, in particular for corrosion protection or as anti-scaling.
  • the lubricants are selected from the group consisting of natural and synthetic waxes, oils, polymers, in particular polytetrafluoroethylene and fluorinated ethylene propylene, thermoplastics, in particular polyethylenes and polyamide, Stearates, aluminum, zinc, magnesium and lithium soaps, higher fatty acids, organic compounds of chlorine, phosphorus and sulfur, fluorides of calcium or barium, phosphates, oxides, hydroxides and sulphides of calcium and zinc and metals, especially lead, copper, Tin, silver, gold, indium and nickel is selected.
  • the lubricants are inorganic solid lubricants such as graphite, carbon black, boron nitride, titanium nitride, molybdenum disulfide and tungsten disulfide.
  • the binders organic compounds especially polyurethanes, polyesters, epoxy resins, alkyd resins, phenolic resins, melamine resins, acrylates, methacrylates, organic-inorganic compounds, in particular oligo- and polysiloxanes from hydrolysis and condensation of alkylalkoxysilanes, alkoxysilanes or Mixtures of these or silicones or silicone resins are, or purely inorganic compounds, in particular silicates, polyphosphates, aluminosilicates or metals, metal alkoxides and their condensation products, metal oxides and metal salts.
  • binders or fillers which maintain the composite layer after burning out of organic constituents, such as the above-mentioned oligo- and polysiloxanes.
  • the invention provides that the coating material contains inorganic or organic color pigments.
  • the coating material contains metal pigments, in particular aluminum, zinc, iron, tin, copper, magnesium, stainless steel, silver and other precious metal pigments. These can give the coating further functionalities.
  • metal pigments in particular aluminum, zinc, iron, tin, copper, magnesium, stainless steel, silver and other precious metal pigments. These can give the coating further functionalities.
  • aluminum and zinc pigments can serve as corrosion inhibitors, the aluminum pigments also in high-temperature processes to avoid scale.
  • the coating material contains one or more anticorrosive pigments or corrosion inhibitors, in particular silicates, polyphosphates, tannin derivatives, basic sulfonates of alkali and alkaline earth metals, zinc salts of organic nitrogen acids, phosphates, chromates, Molybdate of calcium, zinc and aluminum.
  • anticorrosive pigments or corrosion inhibitors in particular silicates, polyphosphates, tannin derivatives, basic sulfonates of alkali and alkaline earth metals, zinc salts of organic nitrogen acids, phosphates, chromates, Molybdate of calcium, zinc and aluminum.
  • the coating material according to the invention is also a use of the coating material according to the invention, wherein the coating material is applied to a substrate, which then undergoes at least one forming process.
  • the forming process is a cold-forming process at temperatures between room temperature and 100 0 C.
  • Umforrnungsprozeß is a high-temperature deformation process at temperatures between 100 and 1000 ° C or a Formhärtungsprozeß at temperatures of 800 to LlOO 0 C.
  • the friction during the forming process is reduced by at least 20%.
  • the evaporation of metals is reduced by a dense layer on the surface by 20 to 100%.
  • the coating material when applied to a metallic substrate and subjected to a high temperature deformation process, is weldable, especially in the resistance spot welding process.
  • the layer of the coating material according to the invention applied to the substrate can also serve as a primer for further processes, for example a cataphoretic dip coating (KTL) or another coating.
  • KTL cataphoretic dip coating
  • the substrate consists of polymers, metals, in particular steel, or natural materials, in particular straw, hemp, sisal and leather.
  • the substrate consists of steel which is coated with an additional galvanic or hot-dip coating metal coating of a different material from the substrate material, in particular aluminum, zinc, magnesium, tin or corresponding alloys of these metals such as aluminum-silicon, aluminum Iron, zinc-iron, zinc-silicon, zinc-aluminum-silicon, is provided.
  • an additional galvanic or hot-dip coating metal coating of a different material from the substrate material in particular aluminum, zinc, magnesium, tin or corresponding alloys of these metals such as aluminum-silicon, aluminum Iron, zinc-iron, zinc-silicon, zinc-aluminum-silicon, is provided.
  • the coating material may perform additional functions there compared to the uncoated substrate, e.g. increase the scratch resistance, improve the corrosion protection, influence the design (for example by coloring or anti-fingerprint effect), serve as tarnish protection (in the case of metal or PVD surfaces which change electrical conductivity (antistatic effect, conductive, insulating effect) etc.
  • the invention also relates to a component provided with a coating material according to the invention.
  • Such devices may be, for example, parts of automobiles (e.g., body or engine parts), trains or aircraft, machinery, industrial equipment, agricultural equipment, and construction or mining components.
  • the coating material can be adapted in its composition to all deformable substrates (e.g., polymers, natural products, metals).
  • the coating material for use on steel surfaces where it is equally applicable for cold and hot forming processes.
  • the coating may be applied to manganese-boron steel for a two-step process consisting of preforming at room temperature (cold working) followed by hot working at> 900 ° C and mold cooling (tempering).
  • room temperature cold working
  • hot working hot working
  • mold cooling mold cooling
  • supporting body parts such as tunnels, frame and support parts are produced in the automotive industry.
  • the process of two-stage cold and hot forming in conjunction with a protective coating against scaling based on a metal-particle-pigmented inorganic-organic sol-gel material is described in the patent application EP 2005/010622.
  • phosphoric acid 30 g of 2.5% strength phosphoric acid are added to a mixture of 100 g of methyltriethoxysilane (MTES, Degussa) and 20 g of tetraethoxysilane (TEOS, Degussa) and vigorously stirred for 1 h. Thereafter, 10 g of graphite powder (particle size ⁇ 10 ⁇ m) and 10 g of a polyethylene wax dispersion (solids content 40% by weight in butyl acetate) are added to the monophasic hydrolyzate formed and homogeneously dispersed in. 50 g of aluminum pigment paste (for example Decomet high gloss, Al 1002/10, Schlenk) and 30 g of ethanol are added to the mixture and stirred with a paddle stirrer until the pigment is completely homogeneous.
  • MTES methyltriethoxysilane
  • TEOS tetraethoxysilane
  • the finished lacquer is applied to a clean and grease-free substrate by means of a flow cup spray gun (eg Sata Jet, nozzle 1.2 mm) or applied with a suitable substrate geometry (flat plate or plastic plate) with a squeegee, so that the entire surface of a thin Wet film (about 20-40 microns thick) is covered.
  • the lacquer layer is allowed to flash for about 5 minutes at room temperature and then, depending on the required abrasion resistance and thermal resistance of the substrate either further 2h dried at room temperature or thermally cured (eg 30min at 80 ° C or 5min at 250 ° C).
  • the final varnish is applied to a grease-free galvanized steel substrate using a flow cup spray gun (eg Sata Jet, nozzle 1.2 mm) or, with a suitable substrate geometry (flat sheet or blank), applied with a doctor blade, so that a wet film thickness of about 10-40 ⁇ m is achieved.
  • the lacquer layer is cured for about 10 minutes at a surface temperature of 220 ° C.
  • the paint can also be applied to the galvanized steel sheet by roller coating (for example coil coating) and is baked at a PMT (Peak Mean Temperature) of 230-240 ° C.
  • the tribologically active coating material is coated with a flow cup spray gun (eg Sata Jet, nozzle 1.4 mm) on an alkaline degreased steel substrate or applied with a suitable substrate geometry (flat sheet or plate) with a doctor, so that a wet film thickness of about 10 -40 ⁇ m is achieved.
  • a flow cup spray gun eg Sata Jet, nozzle 1.4 mm
  • the lacquer layer is cured for 10 minutes at a surface temperature of 200-250 ° C.
  • an additional coloring layer to 100 g of a polyester resin solution (for example, available under the trade name Desmotherm VP LS 2218) 220 g of a suitable solvent (eg, Aromatics Solvesso 150) and 20 g of a suitable pigment (eg iron oxide pigment, available under the trade name Bayferrox 645 T) was added and dispersed in with a dissolver. 25 g of a polyethylene wax dispersion (solids content 40% by weight in butyl acetate) are added to the mixture and stirred in homogeneously.
  • a polyester resin solution for example, available under the trade name Desmotherm VP LS 2218
  • a suitable solvent eg, Aromatics Solvesso 150
  • a suitable pigment eg iron oxide pigment, available under the trade name Bayferrox 645 T
  • the finished lacquer is applied to an alkaline degreased steel substrate by means of a flow cup spray gun (eg Sata Jet, nozzle 1.4 mm) or, with suitable substrate geometry (flat sheet or blank), applied with a doctor blade so that a wet film thickness of about 10 40 ⁇ m is achieved.
  • a flow cup spray gun eg Sata Jet, nozzle 1.4 mm
  • suitable substrate geometry flat sheet or blank
  • the paint can also be applied to the sheet by roller coating (for example coil coating) and is baked at a PMT (Peak Metal Temperature) of 230-240 ° C.

Abstract

L'invention concerne un matériau de revêtement de substrats. L'invention vise à mettre en oeuvre un matériau de revêtement présentant une effet de protection contre la corrosion et un effet tribologique. A cet effet, le matériau de revêtement contient de 0,5 à 90 % en poids, de préférence de 5 à 60 % en poids de lubrifiants destinés à réduire la résistance de friction de la surface au cours de processus de formage, jusqu'à 95 % en poids, de préférence de 10 à 75 % en poids d'un liant adapté et de 0 à 90 % en poids de pigments ou de charges, le matériau de revêtement peut être lié fixement à la surface du substrat, et le matériau de revêtement peut être formé avec le substrat dans des processus de formage à froid ou à chaud.
EP06828637A 2005-12-12 2006-12-07 Materiau de revetement de substrats Withdrawn EP1960484A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200510059613 DE102005059613A1 (de) 2005-12-12 2005-12-12 Beschichtungsmaterial für Substrate
PCT/DE2006/002188 WO2007076769A2 (fr) 2005-12-12 2006-12-07 Matériau de revêtement de substrats contenant un lubrifiant pour des processus de formage

Publications (1)

Publication Number Publication Date
EP1960484A2 true EP1960484A2 (fr) 2008-08-27

Family

ID=37944092

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06828637A Withdrawn EP1960484A2 (fr) 2005-12-12 2006-12-07 Materiau de revetement de substrats

Country Status (3)

Country Link
EP (1) EP1960484A2 (fr)
DE (1) DE102005059613A1 (fr)
WO (1) WO2007076769A2 (fr)

Cited By (1)

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EP2683848B1 (fr) * 2011-03-08 2020-11-04 ThyssenKrupp Steel Europe AG Utilisation d'un produit en acier plat à l'aide d'un formage à chaud pour former un composant et procédé de fabrication d'un objet formé à chaud

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DE102007038215A1 (de) * 2007-08-13 2009-02-19 Nano-X Gmbh Verfahren zur Herstellung einer aktiven Korrosionsschutzbeschichtung auf Bauteilen aus Stahl
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DE102009002715B4 (de) * 2009-04-29 2017-02-09 Federal-Mogul Nürnberg GmbH Verwendung eines wasserverdünnbaren Gleitlacks für die Beschichtung von Motorkolben
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EP2865723B1 (fr) * 2013-10-23 2016-09-14 Fuchs Europe Schmierstoffe GmbH Moyen de protection contre la corrosion pour application à froid
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EP2683848B1 (fr) * 2011-03-08 2020-11-04 ThyssenKrupp Steel Europe AG Utilisation d'un produit en acier plat à l'aide d'un formage à chaud pour former un composant et procédé de fabrication d'un objet formé à chaud

Also Published As

Publication number Publication date
DE102005059613A1 (de) 2007-06-28
WO2007076769A2 (fr) 2007-07-12
WO2007076769A3 (fr) 2007-11-01

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