WO2022179884A1 - Verfahren zum herstellen eines emaillierten stahlbauteils, emailliertes stahlbauteil, sowie verwendung davon - Google Patents
Verfahren zum herstellen eines emaillierten stahlbauteils, emailliertes stahlbauteil, sowie verwendung davon Download PDFInfo
- Publication number
- WO2022179884A1 WO2022179884A1 PCT/EP2022/053633 EP2022053633W WO2022179884A1 WO 2022179884 A1 WO2022179884 A1 WO 2022179884A1 EP 2022053633 W EP2022053633 W EP 2022053633W WO 2022179884 A1 WO2022179884 A1 WO 2022179884A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- binder
- steel component
- adhesion
- layer
- binders
- Prior art date
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 78
- 239000010959 steel Substances 0.000 title claims abstract description 78
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 8
- 239000011230 binding agent Substances 0.000 claims abstract description 67
- 238000000034 method Methods 0.000 claims abstract description 62
- 239000002318 adhesion promoter Substances 0.000 claims abstract description 38
- 229910052751 metal Inorganic materials 0.000 claims abstract description 37
- 239000002184 metal Substances 0.000 claims abstract description 37
- 238000000576 coating method Methods 0.000 claims abstract description 33
- 229910044991 metal oxide Inorganic materials 0.000 claims abstract description 24
- 150000004706 metal oxides Chemical class 0.000 claims abstract description 24
- 239000011248 coating agent Substances 0.000 claims abstract description 18
- 150000003839 salts Chemical class 0.000 claims abstract description 15
- 210000003298 dental enamel Anatomy 0.000 claims description 43
- 230000008569 process Effects 0.000 claims description 23
- 238000001035 drying Methods 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 8
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 8
- 239000000843 powder Substances 0.000 claims description 7
- 238000004140 cleaning Methods 0.000 claims description 6
- 238000005406 washing Methods 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 229910052750 molybdenum Inorganic materials 0.000 claims description 4
- 239000011733 molybdenum Substances 0.000 claims description 4
- 229910052759 nickel Inorganic materials 0.000 claims description 4
- 229920000642 polymer Polymers 0.000 claims description 4
- 238000005507 spraying Methods 0.000 claims description 4
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 3
- 238000007598 dipping method Methods 0.000 claims description 3
- 238000005554 pickling Methods 0.000 claims description 3
- 239000002904 solvent Substances 0.000 claims description 3
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims description 2
- 239000004593 Epoxy Substances 0.000 claims description 2
- 229920000084 Gum arabic Polymers 0.000 claims description 2
- 241000978776 Senegalia senegal Species 0.000 claims description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 2
- 239000000205 acacia gum Substances 0.000 claims description 2
- 235000010489 acacia gum Nutrition 0.000 claims description 2
- 238000000137 annealing Methods 0.000 claims description 2
- 229910052785 arsenic Inorganic materials 0.000 claims description 2
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 claims description 2
- 239000010941 cobalt Substances 0.000 claims description 2
- 229910017052 cobalt Inorganic materials 0.000 claims description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 2
- 238000010411 cooking Methods 0.000 claims description 2
- 238000005238 degreasing Methods 0.000 claims description 2
- 229920000515 polycarbonate Polymers 0.000 claims description 2
- 239000004417 polycarbonate Substances 0.000 claims description 2
- 229920000728 polyester Polymers 0.000 claims description 2
- 229920000193 polymethacrylate Polymers 0.000 claims description 2
- 229920002635 polyurethane Polymers 0.000 claims description 2
- 239000004814 polyurethane Substances 0.000 claims description 2
- 239000011135 tin Substances 0.000 claims description 2
- 229910052718 tin Inorganic materials 0.000 claims description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims 1
- 239000010410 layer Substances 0.000 description 61
- 239000000758 substrate Substances 0.000 description 23
- 230000001070 adhesive effect Effects 0.000 description 22
- 239000000853 adhesive Substances 0.000 description 21
- 239000000126 substance Substances 0.000 description 11
- 230000008901 benefit Effects 0.000 description 8
- 150000002739 metals Chemical class 0.000 description 7
- 238000005260 corrosion Methods 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 5
- 238000004534 enameling Methods 0.000 description 5
- 230000036541 health Effects 0.000 description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- 238000007796 conventional method Methods 0.000 description 4
- 239000000654 additive Substances 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- -1 nickel oxide Chemical class 0.000 description 3
- 239000002243 precursor Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 241000196324 Embryophyta Species 0.000 description 2
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 2
- DKGAVHZHDRPRBM-UHFFFAOYSA-N Tert-Butanol Chemical compound CC(C)(C)O DKGAVHZHDRPRBM-UHFFFAOYSA-N 0.000 description 2
- 239000012876 carrier material Substances 0.000 description 2
- 230000000875 corresponding effect Effects 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 238000009713 electroplating Methods 0.000 description 2
- 239000000839 emulsion Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000000383 hazardous chemical Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 150000002891 organic anions Chemical class 0.000 description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 150000004760 silicates Chemical class 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 150000004645 aluminates Chemical class 0.000 description 1
- 125000000129 anionic group Chemical group 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 150000003841 chloride salts Chemical class 0.000 description 1
- 238000006482 condensation reaction Methods 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 239000010431 corundum Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 108010025899 gelatin film Proteins 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 150000004820 halides Chemical class 0.000 description 1
- 231100000206 health hazard Toxicity 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 239000010954 inorganic particle Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000002105 nanoparticle Substances 0.000 description 1
- 229910000480 nickel oxide Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- GNRSAWUEBMWBQH-UHFFFAOYSA-N oxonickel Chemical compound [Ni]=O GNRSAWUEBMWBQH-UHFFFAOYSA-N 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000007788 roughening Methods 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 238000003980 solgel method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000011877 solvent mixture Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000013008 thixotropic agent Substances 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 238000004876 x-ray fluorescence Methods 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
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
- C23D—ENAMELLING OF, OR APPLYING A VITREOUS LAYER TO, METALS
- C23D3/00—Chemical treatment of the metal surfaces prior to coating
-
- 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
- C23D—ENAMELLING OF, OR APPLYING A VITREOUS LAYER TO, METALS
- C23D5/00—Coating with enamels or vitreous layers
- C23D5/02—Coating with enamels or vitreous layers by wet methods
-
- 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
- C23D—ENAMELLING OF, OR APPLYING A VITREOUS LAYER TO, METALS
- C23D5/00—Coating with enamels or vitreous layers
- C23D5/04—Coating with enamels or vitreous layers by dry methods
Definitions
- the present invention relates to a method for producing an enameled steel component and an enameled steel component that can be obtained using the method.
- Enamelled steel components and methods for producing enameled steel components have been known for a long time.
- a key factor here is ensuring sufficient adhesion between the steel substrate and the enamel. It is known that the presence of various metal oxides, such as nickel oxide, at the interface between steel and enamel improves adhesion.
- the following technologies in particular are used in order to develop sufficient adhesion of the enamel to the steel substrate.
- a metallic primer is applied before the enamel layer is applied in order to improve adhesion.
- a corresponding method is disclosed, for example, in CH409573.
- the base layer is deposited electrochemically using an electroplating process.
- the metallic base layer is at least partially converted into an oxide layer, which increases the adhesion of the enamel to the steel substrate.
- the electroplating process is associated with high energy and equipment costs and is very harmful to the environment and health.
- the adhesion of the enamel to some types of steel can be insufficient.
- single-layer direct enamelling methods are known in which only a single layer of enamel is applied to the substrate surface.
- Metal oxides are added to this layer of enamel to increase adhesion.
- Such methods have the disadvantage that the metal oxide is not only present at the boundary layer, but over the entire enamel layer and therefore a relatively large amount of metal oxide is required to ensure sufficient adhesion.
- the presence of metal oxides on the enamel surface can also cause other disadvantages, such as lower chemical and mechanical stability, such as resistance to chemicals, water or steam, corrosion resistance, scratch resistance or cleanability.
- the use of such enamelled steel components can be limited, especially in food contact applications, since the potentially harmful metal oxides are present on the enamel surface.
- An object of the present invention is to provide a method for manufacturing an enamelled steel component which obviates the disadvantages associated with the prior art.
- the object is to provide a method in which excellent adhesion of the enamel to the steel substrate is achieved even with a small total amount of adhesive metal, and in which a large number of types of steel can be used as the substrate.
- Another task of the process is to reduce the energy and equipment costs, as well as the environmental and health hazards.
- a further object is to provide a method for producing an enameled steel component which has excellent chemical and mechanical stability, such as resistance to chemicals, water or steam, corrosion resistance, scratch resistance and cleanability, and which is suitable for food contact applications without restrictions.
- a further object of the present invention is to provide an enamelled steel component which has corresponding properties.
- an object is to provide an enameled steel member which exhibits excellent adhesion of the enamel to the steel substrate even with a small total amount of adhesion metal, and in which a variety of steel grades can be used as the substrate.
- Another object is to provide an enameled steel member excellent in chemical and mechanical stability such as resistance to chemicals, water or steam, corrosion resistance, scratch resistance and cleanability.
- a further object is to provide a glass-lined steel component which is suitable for a variety of uses, in particular for uses in the food contact area.
- the present invention relates to a method for producing an enamelled steel component, comprising the steps of providing a steel component; Coating the steel component with an adhesion promoter layer comprising at least one adhesion metal, adhesion metal oxide or a salt thereof and a binder; and enamelling the coated steel component.
- the shape and type of the steel components or the steel substrates are not restricted.
- flat components such as metal sheets, plates or foils can be used, but also components with three-dimensional geometries such as deep-drawn or cast molded parts.
- All steel grades can be used, such as alloyed or non-alloyed steel grades, eg IF steel or EK steel (see EN10209 eg DCOxEK) steel.
- the layers are deposited on the finished steel component, ie the resulting enamelled steel component is no longer formed.
- the adhesion promoter layer comprises at least an adhesion metal, adhesion metal oxide or a salt thereof, and a binder.
- the adhesion promoter layer serves as a primer and is also referred to as a sacrificial layer, since in embodiments it is at least partially dissolved in the subsequent enamelling process.
- the presence of the binder and the adhesion metal, adhesion metal oxide, or a salt thereof in the adhesion promoter layer is necessary to achieve the advantages of the invention detailed below.
- the adhesion metal can be used in elemental form, as an oxide or as a salt thereof. If the adhesive metal is not present as an oxide, it is oxidized during the subsequent enamelling process. The resulting adhesion oxide ensures excellent adhesion of the enamel to the steel substrate.
- the resulting adhesive metal oxide can at least partially diffuse into the enamel layer.
- a concentration gradient of the adhesion metal oxide arises in the resulting enamel layer, such that the concentration of the adhesion metal is greatest at the interface to the steel substrate and decreases in the direction of the surface.
- no bonding metal oxide is present on the surface of the enamel layer. The distribution of the bonding metal oxide in the glass layer can be verified using REM/EXD.
- the binder ensures an even distribution of the adhesion metal, adhesion metal oxide or a salt thereof in the adhesion promoter layer.
- the presence of the binder also ensures that the adhesion promoter layer can be applied easily and evenly.
- the binder is configured so that it does not interfere with the enameling process and, in embodiments, it either thermally decomposes in the subsequent enameling step and/or bonds to the enamel layer.
- the method according to the invention further ensures that the adhesive metal, adhesive metal oxide or a salt thereof contained in the adhesion promoter layer is not present on the surface of the enamelled steel component, but is only located at the boundary layer between steel substrate and enamel.
- the method it is also advantageous that a deposition of the adhesive metal via a chemical or electrochemical process is avoided, which is disadvantageous from the point of view of costs and the environment.
- the enameling can be carried out with enamel powders without adhesive metal components, which are very expensive and critical to the environment and health.
- the method according to the invention has the advantage in relation to conventional direct enamel methods that the adhesive metals can be used in smaller quantities but at the same time excellent adhesion is achieved, i.e. the method according to the invention is advantageous from a cost, environmental and health point of view.
- the adhesion promoter layer is a sol-gel-based system, i.e. it can be selected from several coating processes suitable for sol-gel materials, such as dipping, flow-coating or spraying.
- the adhesion promoter layer can be applied evenly, effectively, inexpensively and in small layer thicknesses. Furthermore, excellent adhesion of the enamel to the steel substrate can be achieved as a result.
- Sol-gel based systems are known in the prior art.
- the sols used as coating solutions are used to produce the layers first applied to the substrate surface. During the coating process and the drying of the sol, hydrolysis and condensation reactions of the precursors used take place until the aggregation of the sol particles leads to a solid gel film.
- the precursors include the educt materials for forming the layer and in particular the educt materials for forming the binder. Suitable precursors are known and are not restricted according to the invention.
- the type of adhesive metal is not limited. One, two or more adhesion metals, adhesion metal oxides or salts thereof can be used, i.e. the adhesion metal can be used both in elemental form and in cationic form.
- the adhesion metal is selected from the group comprising nickel, cobalt, copper, tin, iron, molybdenum or arsenic, preferably nickel, copper, iron or molybdenum.
- the use of these bonding metals means that the enamel layer adheres particularly well to the steel substrate. If the adhesive metal is used in elementary form, in embodiments, oxidation to the adhesive metal oxide takes place during the subsequent enamelling.
- the type of oxides is not restricted. All kinds of oxides or salts thereof can be used.
- Preferred inorganic salts are, for example, silicates, aluminates or halides such as chlorides.
- organic anions such as polymeric organic anions, can be used.
- the bonding metal is already used as an oxide, i.e. that the elementary bonding metal does not have to be oxidized, as is necessary, for example, in conventional methods with a metallic base layer.
- the method according to the invention thus has the advantage of greater flexibility in relation to the conventional method for producing an enamelled steel component, in which a metallic primer is applied before the enamel layer is applied, e.g. in relation to the replaceable adhesive metals and types of enamel.
- the concentration of the adhesion metal or the salt thereof in the adhesion-promoting layer is not limited. Suitable concentrations of the adhesion metal or the salt thereof are, for example, in the range from 1 to 95% by weight, preferably 20 to 90% by weight, more preferably 40 to 80% by weight, more preferably 50 to 70% by weight, based on the total weight of the adhesion promoter.
- the type of binder is not limited. One, two or more different binders can be used.
- the binder represents the main component, ie the matrix of the adhesion promoter during application. The binder ensures good applicability and homogeneous distribution of the adhesion metal or the salt thereof in the adhesion promoter layer.
- Main task Fixes the adhesion promoter layer on the component up to the point of enamelling
- the binder is an inorganic binder.
- the inorganic binder is preferably formed via a sol-gel process (sol-gel is partly organic).
- sol-gel is partly organic.
- Inorganic binders have the advantage that there is good compatibility between the adhesion promoter layer and the enamel layer, which is usually based on silicate or oxide systems. Particularly good adhesion can thus be achieved. Furthermore, there is good compatibility in particular with the adhesive metals, in particular adhesive metal oxides.
- the kind of the inorganic binder is not limited.
- the inorganic binder is preferably an oxide-based binder, which is particularly preferably selected from aluminum oxide-based binders, titanium oxide-based binders or silicate-based binders.
- oxide-based binder which is particularly preferably selected from aluminum oxide-based binders, titanium oxide-based binders or silicate-based binders.
- binders are generally known and will not be explained further here.
- These systems have the advantage of being readily and inexpensively available and being compatible with common enamel layers.
- the adhesion promoter system can be set variably and easily and also requires excellent adhesion. There is also a high level of compatibility with a large number of adhesive metals or adhesive metal oxides.
- the binder is an organic binder.
- the kind of the organic binder is not limited. For the subsequent enamelling process, however, it is necessary for the organic binder to thermally decompose during the enamelling step.
- the binder is preferably a polymer-based binder. Organic binders and in particular polymeric organic binders can be obtained and applied easily and inexpensively.
- the polymer-based binder is selected from the group comprising epoxy-based binders, acrylate-based binders such as poly(meth)acrylate binders, Polyester-based binders, polyurethane-based binders, polycarbonate-based binders, rubber-based binders such as gum arabic binders, or combinations thereof.
- binders are easily and completely thermally decomposable and therefore cause the resulting enamelled steel component to have particularly advantageous adhesive properties.
- the organic binder is a polymeric anionic binder. This has the advantage that it can be used to produce adhesion promoter systems with a high proportion of adhesion metal cations that are easy to apply.
- binder systems are also included, such as organic-inorganic hybrid systems.
- inorganic particles such as silicon oxide, aluminum oxide, titanium oxide or zirconium oxide particles can be added to the binder.
- nanoparticle-containing binder systems are included, which require particularly good adhesion properties.
- the adhesion promoter comprises further components or additives such as, for example, fillers, compatibilizers, stabilizers, dyes, antioxidants, thixotropic agents, etc. These are conventionally known and are not explained further here.
- the further components or additives are in a total amount in the range of 10% by weight or less, preferably 1 to 0.001% by weight, more preferably 0.1 to 0.01% by weight, based on the total weight of the adhesion promoter.
- the type of application of the adhesion promoter layer is not restricted according to the invention. All conventional coating processes can be used.
- the coating is done via a wet coating process.
- the adhesion promoter is applied in liquid form, for example as a solution, dispersion, suspension or emulsion.
- concentration of the adhesion promoter is not limited and is, for example, in the range from 1 to 90% by weight, preferably 10 to 70% by weight, more preferably 20 to 50% by weight.
- the type of wet coating process is not limited according to the invention. Suitable wet coating processes are known in the art.
- the application preferably takes place via a dipping, spraying or spraying process. However, all other common application methods are also included according to the invention. Wet coating processes allow an even, effective and cost-effective application of the adhesion promoter layer.
- the adhesion promoter in the form of an aqueous solution, the solvent comprising water.
- solvent mixtures are included according to the invention, such as mixtures of water and alcohols such as ethanol, isopropanol or t-butyl alcohol.
- the mixing ratios are not limited and are, for example, in the range from 90:10 to 10:90, preferably from 80:40 to 20:80, more preferably from 60:40 to 40:60 (water:alcohol).
- the adhesion promoter can be in the form of an aqueous dispersion, suspension or emulsion.
- the method preferably also includes a step of drying the coated component before enamelling.
- drying can take place at temperatures above room temperature of 21°C, such as in the range of 30 to 200°C, preferably at 50 to 100°C. Drying can take place, for example, with IR radiation or with hot air. This allows for a cost-effective and fast procedure, whereby steel components with a complex three-dimensional geometry (e.g. with undercuts) can be coated well.
- the coating is carried out in a commercially available, standard immersion or spray washing system.
- the process is carried out in such a way that after the steel substrate has been washed and, if necessary, pretreated, the adhesion promoter layer is applied in the rinsing bath of an existing washing plant. This is followed by drying in the drying stage of the enamel washing plant and the application of the enamel layer.
- This has the advantage that the drying stage of the car wash can be used to dry the adhesion promoter layer and no additional drying is required after the adhesion promoter layer has been applied.
- This embodiment of the method is therefore particularly advantageous from an energy point of view.
- the coating can take place via a powder coating process.
- Suitable process conditions for powder coatings are generally known and are not limited according to the invention.
- the application in the form of a powder coating has the advantage that the coating can be carried out very effectively, inexpensively and with little outlay on equipment.
- powder coating eliminates the drying step that is necessary for a wet coating process.
- the method further comprises a step of cleaning the steel component before coating.
- suitable cleaning processes are not limited.
- the cleaning step is preferably selected from the group comprising washing, annealing, degreasing, pickling or combinations thereof. In this way, particularly effective and cost-effective cleaning can take place.
- the substrate surface Before the adhesion promoter is applied, the substrate surface can also be roughened mechanically, for example by a blasting process using glass granules or corundum, or treated chemically or physically in some other way in order to achieve improved adhesion.
- mechanical roughening are, for example, pickling, etching, vaporization, eroding or milling.
- the substrates to be coated are optionally cleaned to remove dirt and grease residues by immersing the substrates in cleaning baths, for example filled with a customary detergent solution. If necessary, this process can be supported by the application of ultrasound.
- the layer thickness of the resulting adhesion promoter layer is not restricted according to the invention.
- the adhesion promoter layer is applied in a layer thickness in the range of 25 ⁇ m or less, preferably 0.01-20 ⁇ m, more preferably 0.05-15 ⁇ m, further preferably 0.1-10 ⁇ m. This enables excellent adhesion to be achieved in combination with an effective and cost-effective process.
- the layer thickness of the adhesion promoter layer is measured using white light interference or X-ray fluorescence.
- Enamel in the context of the present invention is a mass with an inorganic composition, usually based on silicates and oxides, which is produced in mostly glassy solidified form by melting, sintering or friting, which means a melting process that is interrupted shortly before melting together.
- This mass sometimes with additives, is usually applied in one or more layers to a carrier material and melted at high temperatures and for a short burning time, with the aim usually being to coat the carrier material.
- the layer thickness of the resulting enamel layer is not restricted according to the invention.
- the enamel layer is applied in a layer thickness in the range of 1 mm or less, preferably 1-500 ⁇ m, more preferably 5-250 ⁇ m, further preferably 10-180 ⁇ m.
- the layer thickness of the enamel layer is measured microscopically on a cross section.
- the invention further includes an enamelled steel component that can be obtained using the method described above.
- the steel structure of the present invention differs structurally from enameled steel structures produced by the conventional methods described above.
- the enamelled steel components according to the invention have improved adhesion of the enamel to the steel substrate, even with a low total amount of adhesive metal. Therefore, a variety of steel grades can be used as a substrate.
- the enamelled steel component has excellent chemical and mechanical stability, such as resistance to chemicals, water or steam, corrosion resistance, scratch resistance or cleanability.
- the enamelled steel component is also suitable for a large number of uses, in particular for uses in the food contact area.
- Enamelled steel components according to the present invention are suitable for a variety of applications.
- the enamelled steel components can be used in a kitchen appliance, preferably an oven, in particular as an oven, baking tray or trough, and as an accessory in or on the cooking space, such as e.g will.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202280017362.4A CN116940714A (zh) | 2021-02-26 | 2022-02-15 | 制造搪瓷化钢部件的方法、搪瓷化钢部件及其用途 |
US18/276,266 US20240124983A1 (en) | 2021-02-26 | 2022-02-15 | Method for producing an enameled steel component, enameled steel component, and use thereof |
EP22707057.0A EP4298267A1 (de) | 2021-02-26 | 2022-02-15 | Verfahren zum herstellen eines emaillierten stahlbauteils, emailliertes stahlbauteil, sowie verwendung davon |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102021201881.5 | 2021-02-26 | ||
DE102021201881.5A DE102021201881A1 (de) | 2021-02-26 | 2021-02-26 | Verfahren zum herstellen eines emaillierten stahlbauteils, emailliertes stahlbauteil, sowie verwendung davon |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2022179884A1 true WO2022179884A1 (de) | 2022-09-01 |
Family
ID=80623509
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2022/053633 WO2022179884A1 (de) | 2021-02-26 | 2022-02-15 | Verfahren zum herstellen eines emaillierten stahlbauteils, emailliertes stahlbauteil, sowie verwendung davon |
Country Status (5)
Country | Link |
---|---|
US (1) | US20240124983A1 (de) |
EP (1) | EP4298267A1 (de) |
CN (1) | CN116940714A (de) |
DE (1) | DE102021201881A1 (de) |
WO (1) | WO2022179884A1 (de) |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1061594B (de) * | 1958-05-07 | 1959-07-16 | Schultheis & Soehne | Verfahren zum Herstellen einer hellen Grundschicht als Unterlage fuer die Emaillierung von Gusseisen im Nass-, Puder- und Tauchpuderverfahren |
FR2002555A1 (de) * | 1968-02-24 | 1969-10-17 | Oberschwabische Metall | |
DE2039912A1 (de) * | 1970-08-11 | 1972-02-17 | Akstinat Manfred H | Direkt-Emaillier-Verfahren |
US5688340A (en) * | 1994-08-24 | 1997-11-18 | Metallgesellschaft Aktiengesellschaft | Preparation of metal surfaces for vitreous enameling |
US5766374A (en) * | 1995-09-28 | 1998-06-16 | Sollac | Process for preparing the metal surface of an article, especially one made of steel sheet, for direct-on enameling |
EP0916624A1 (de) * | 1997-11-11 | 1999-05-19 | Kawasaki Steel Corporation | Porzellan-emailliertes Stahlblech und Fritten zur Emaillierung |
WO2009087217A1 (en) * | 2008-01-10 | 2009-07-16 | Ocas Onderzoekscentrum Voor Aanwending Van Staal N.V. | Method for producing an enamelled steel substrate |
EP3231894A1 (de) * | 2016-04-12 | 2017-10-18 | Prince Belgium BVBA | Anorganischer primer zur stahlemaillierung |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1249050B (de) | 1961-03-29 | 1967-08-31 | Farbenfabriken Bayer Aktiengesellschaft, Leverkusen | Verfahren zur Emschicht Emailherung |
-
2021
- 2021-02-26 DE DE102021201881.5A patent/DE102021201881A1/de active Pending
-
2022
- 2022-02-15 WO PCT/EP2022/053633 patent/WO2022179884A1/de active Application Filing
- 2022-02-15 CN CN202280017362.4A patent/CN116940714A/zh active Pending
- 2022-02-15 US US18/276,266 patent/US20240124983A1/en active Pending
- 2022-02-15 EP EP22707057.0A patent/EP4298267A1/de active Pending
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1061594B (de) * | 1958-05-07 | 1959-07-16 | Schultheis & Soehne | Verfahren zum Herstellen einer hellen Grundschicht als Unterlage fuer die Emaillierung von Gusseisen im Nass-, Puder- und Tauchpuderverfahren |
FR2002555A1 (de) * | 1968-02-24 | 1969-10-17 | Oberschwabische Metall | |
DE2039912A1 (de) * | 1970-08-11 | 1972-02-17 | Akstinat Manfred H | Direkt-Emaillier-Verfahren |
US5688340A (en) * | 1994-08-24 | 1997-11-18 | Metallgesellschaft Aktiengesellschaft | Preparation of metal surfaces for vitreous enameling |
US5766374A (en) * | 1995-09-28 | 1998-06-16 | Sollac | Process for preparing the metal surface of an article, especially one made of steel sheet, for direct-on enameling |
EP0916624A1 (de) * | 1997-11-11 | 1999-05-19 | Kawasaki Steel Corporation | Porzellan-emailliertes Stahlblech und Fritten zur Emaillierung |
WO2009087217A1 (en) * | 2008-01-10 | 2009-07-16 | Ocas Onderzoekscentrum Voor Aanwending Van Staal N.V. | Method for producing an enamelled steel substrate |
EP3231894A1 (de) * | 2016-04-12 | 2017-10-18 | Prince Belgium BVBA | Anorganischer primer zur stahlemaillierung |
Also Published As
Publication number | Publication date |
---|---|
EP4298267A1 (de) | 2024-01-03 |
DE102021201881A1 (de) | 2022-09-01 |
CN116940714A (zh) | 2023-10-24 |
US20240124983A1 (en) | 2024-04-18 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP2292808B1 (de) | Metallisierende Vorbehandlung von Zinkoberflächen | |
DE102012202787B4 (de) | Verfahren zum Lackieren eines Werkstücks | |
DE3321231C2 (de) | Verfahren zur Herstellung von Verschleißschutzschichten auf Oberflächen von Bauteilen aus Titan oder Titanbasislegierungen | |
DE112011104621T9 (de) | Magnesuimlegierung mit dichter Oberflächentextur und ihr Oberflächenbehandlungsverfahren | |
DE102011053509A1 (de) | Verfahren zur Beschichtung von Oberflächen und Verwendung der nach diesem Verfahren beschichteten Gegenstände | |
JPS5811513B2 (ja) | 金属表面の保護方法 | |
EP2507408A1 (de) | Mehrstufiges vorbehandlungsverfahren für metallische bauteile mit zink- und eisenoberflächen | |
DE102016205815A1 (de) | Verfahren zur nickelfreien Phosphatierung von metallischen Oberflächen | |
JP6279723B2 (ja) | 柔軟性が改良されたZnAlMg−被覆金属板および対応する製造方法 | |
DE202006019880U1 (de) | Korrosionsbeständiges Substrat | |
EP1692325A1 (de) | Zweistufige konversionsbehandlung | |
WO2015007789A2 (de) | Verfahren zum beschichten von metallischen oberflächen von substraten und nach diesem verfahren beschichteten gegenstände | |
WO2020237277A1 (de) | Beschichtungssystem | |
DE2308281A1 (de) | Ueberzuege aus aluminium oder aluminiumlegierungen auf metallischen substraten | |
DE102007057185A1 (de) | Zirconiumphosphatierung von metallischen Bauteilen, insbesondere Eisen | |
DE3512442A1 (de) | Verfahren zur oberflaechenbehandlung von aluminium | |
WO2022179884A1 (de) | Verfahren zum herstellen eines emaillierten stahlbauteils, emailliertes stahlbauteil, sowie verwendung davon | |
WO2009092817A1 (de) | Passiviermittel, oberflächenbehandlungsmittel, oberflächenbehandlungssprühmittel sowie verfahren zum behandeln von metallischen oberflächen von werkstücken oder gussformen | |
WO2008116510A1 (de) | Mehrfach beschichtetes metallsubstrat und verfahren zu seiner herstellung | |
DE102008017523A1 (de) | Optimierte Elektrotauchlackierung von zusammengefügten und teilweise vorphosphatierten Bauteilen | |
EP0036558A1 (de) | Beschichteter Metallgegenstand und Verfahren zu dessen Herstellung | |
JP5442346B2 (ja) | 化成処理鋼板の製造方法 | |
TW201520372A (zh) | 具優異耐黑變性與耐蝕性之鍍鋅鋼板及其製造方法 | |
DE4333894C1 (de) | Verfahren zur Harzvergütung einer Metalloberfläche | |
DE2452446A1 (de) | Verfahren zum aluminisieren eines eisengegenstands mit mindestens einer nichteisen-hartloetstelle |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 22707057 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 18276266 Country of ref document: US |
|
WWE | Wipo information: entry into national phase |
Ref document number: 202280017362.4 Country of ref document: CN |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2022707057 Country of ref document: EP |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
ENP | Entry into the national phase |
Ref document number: 2022707057 Country of ref document: EP Effective date: 20230926 |