DE102008061263B3 - Metallic workpiece e.g. switch cabinet housing, refining method for use in food industry, involves coating surface of workpiece with nano-structured coating and annealing coating in temperature of specific degree Celsius - Google Patents
Metallic workpiece e.g. switch cabinet housing, refining method for use in food industry, involves coating surface of workpiece with nano-structured coating and annealing coating in temperature of specific degree Celsius Download PDFInfo
- Publication number
- DE102008061263B3 DE102008061263B3 DE200810061263 DE102008061263A DE102008061263B3 DE 102008061263 B3 DE102008061263 B3 DE 102008061263B3 DE 200810061263 DE200810061263 DE 200810061263 DE 102008061263 A DE102008061263 A DE 102008061263A DE 102008061263 B3 DE102008061263 B3 DE 102008061263B3
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- Germany
- Prior art keywords
- coating
- workpiece
- nano
- degree celsius
- temperature
- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
- B05D5/08—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain an anti-friction or anti-adhesive surface
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- 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
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/02—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by thermal decomposition
- C23C18/12—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by thermal decomposition characterised by the deposition of inorganic material other than metallic material
- C23C18/1204—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by thermal decomposition characterised by the deposition of inorganic material other than metallic material inorganic material, e.g. non-oxide and non-metallic such as sulfides, nitrides based compounds
- C23C18/1208—Oxides, e.g. ceramics
-
- 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
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/02—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by thermal decomposition
- C23C18/12—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by thermal decomposition characterised by the deposition of inorganic material other than metallic material
- C23C18/1229—Composition of the substrate
- C23C18/1241—Metallic substrates
-
- 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
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/02—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by thermal decomposition
- C23C18/12—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by thermal decomposition characterised by the deposition of inorganic material other than metallic material
- C23C18/125—Process of deposition of the inorganic material
- C23C18/1262—Process of deposition of the inorganic material involving particles, e.g. carbon nanotubes [CNT], flakes
- C23C18/127—Preformed particles
Abstract
Description
Die Erfindung betrifft ein Verfahren zum Veredeln der Oberfläche eines metallischen Werkstücks, beispielsweise eines Edeltstahlblechs oder eines aus einem Edelstahlblech gefertigten komplexen Werkstücks, wie ein Maschinen- oder Schaltschrankgehäuse.The The invention relates to a method for refining the surface of a metallic workpiece, for example a noble steel sheet or one made of a stainless steel sheet complex workpiece, like a machine or control cabinet housing.
Derartige Oberflächen metallischer Werkstücke, insbesondere auf Basis von Edelstahl, weisen von Haus aus eine relativ gute Korrosionsbeständigkeit auf, neigen jedoch leicht zur Verschmutzung. Insbesondere wenn die metallische Oberfläche eine geringe Rauigkeit und damit einen hohen Glanzgrad aufweist, wird diese Oberfläche gegenüber Verunreinigungen, insbesondere Fingerabdrücken, extrem empfindlich, was nicht nur häufigen Reinigungsaufwand mit sich bringt, sondern überdies gestaltet sich auch die Entfernung von insbesondere Fingerabdrücken als sehr schwierig.such surfaces metallic workpieces, especially based on stainless steel, have a relative of home good corrosion resistance However, they are easily prone to contamination. Especially if the metallic surface has a low roughness and thus a high degree of gloss, will this surface across from Impurities, especially fingerprints, extremely sensitive, causing not just frequent Cleaning costs with it, but also designed the removal of particular fingerprints as very difficult.
Aus
der
Aufgabe der Erfindung ist daher, ein Verfahren vorzuschlagen, mit welchem eine Veredelung einer metallischen Werkstückoberfläche durchgeführt werden kann, dahingehend, dass trotz vorhandenem Glanzgrad eine maximale Unempfindlichkeit gegenüber Verunreinigungen, insbesondere Fingerabdrücken erreicht wird.task The invention is therefore to propose a method with which a finishing of a metallic workpiece surface can be performed can, to the extent that, despite the existing gloss level, a maximum Insensitivity to Impurities, especially fingerprints is achieved.
Zur Lösung der gestellten Aufgabe wird erfindungsgemäß ein Verfahren vorgeschlagen, welches die Abfolge von vier Verfahrensschritten umfasst. Diese sind:
- 1. Verfestigungsstrahlen der Oberfläche mittels Glaskörpern;
- 2. Elektropolieren der Oberfläche zur Verminderung der Oberflächenrauigkeit;
- 3. Beschichten der Oberfläche mit einem mit Keramikpartikeln versetzten Nano-Strukturlack; und
- 4. Einbrennen der Beschichtung.
- 1. solidification jets of the surface by means of glass bodies;
- 2. electropolishing the surface to reduce surface roughness;
- 3. coating the surface with a ceramic particle-coated nano-structured lacquer; and
- 4. Baking the coating.
Durch das im ersten Schritt durchgeführte Verfestigungsstrahlen der Oberfläche mittels Glaskörpern wird die Oberfläche des metallischen Werkstückes verfestigt und dessen Korrosionsbeständigkeit erhöht. Bereits in diesem ersten Schritt wird die Resistenz der Oberfläche gegen Fingerabdrücke im Vergleich zum Ausgangsmaterial erhöht.By the solidification jets performed in the first step the surface by means of glass bodies becomes the surface of the metallic workpiece solidifies and increases its corrosion resistance. Already In this first step, the resistance of the surface against fingerprints increased compared to the starting material.
Nachfolgend wird im zweiten Schritt die verfestigte Oberfläche in einem elektrochemischen Abtragverfahren mit Fremdstromquelle elektropoliert. Dabei wird in an sich bekannter Weise in einem speziell auf das Material abgestimmten Elektrolyten Metall anodisch abgetragen. Hierdurch wird die Mikrorauigkeit der Oberfläche bedeutend verringert und insbesondere Ecken und Kanten der Oberflächen-Mikrostruktur werden feinstentgratet, so dass sich ein metallischer Glanz von hohem Glanzgrad einstellt.following becomes in the second step the solidified surface in an electrochemical Removal method electropolished with external current source. It will in a conventional manner in a specially tailored to the material Electrolytic metal anodically removed. This will make the microroughness the surface significantly reduced and in particular corners and edges of the surface microstructure are very finely deburred, so that a metallic shine of high gloss setting.
In einem nachfolgenden Bearbeitungsschritt wird dann die Oberfläche mit einem mit Keramikpartikeln versetzten Nano-Strukturlack, vorzugsweise einem Klarlack beschichtet. Nach dem Einbrennen dieser Beschichtung unter hohen Temperaturen von vorzugsweise 100 bis 200°C erhält man eine Oberfläche des metallischen Werkstückes, die sich durch eine bedeutend verbesserte Schmutzresistenz und insbesondere eine herausragende Resistenz gegenüber Fingerabdrücken auszeichnet. Sollte es dennoch zu Verschmutzungen der Oberfläche kommen, lassen sich diese aufgrund der oberflächlichen Einbrennbeschichtung mit geringem Aufwand und in den meisten Fällen ohne Zuhilfenahme von Reinigungsmitteln rückstandsfrei abreinigen.In a subsequent processing step is then the surface with a ceramic particle-added nano-structured lacquer, preferably coated with a clearcoat. After baking this coating under high temperatures of preferably 100 to 200 ° C to obtain a Surface of the metallic workpiece that itself by a significantly improved soil resistance and in particular excellent resistance to fingerprints. Should it nevertheless come to contamination of the surface, they can be due to the superficial Baking coating with little effort and in most cases without Clean off any residues with the aid of cleaning agents.
Im Rahmen der Erfindung wurde überraschend festgestellt, dass die im Rahmen eines Verfahrensschrittes durch Elektropolieren mit einer besonders niedrigen Rauigkeit und damit hohem Glanz ausgestattete Oberfläche gleichwohl hoch verschmutzungsresistent insbesondere gegenüber Fingerabdrücken ist. Dies ist insoweit überraschend, als dass üblicherweise elektropolierte Oberflächen mit hohem Glanz besonders empfindlich gegenüber Verschmutzungen wie Fingerabdrücken sind. Durch die erfindungsgemäß vorgeschlagenen aufeinander aufbauenden Verfahrensschritte Glasperlstrahlen, Elektropolieren, Beschichten und Einbrennen der Beschichtung wird jedoch insgesamt eine glänzende und besonders geringe Rauigkeit aufweisende Oberfläche des metallischen Werkstücks erhalten, die nahezu resistent gegenüber Fingerabdrücken ist und bei dennoch anhaftenden Verunreinigungen besonders leicht zu reinigen ist.in the The scope of the invention has been surprising found that in the context of a procedural step by Electropolishing with a particularly low roughness and thus high gloss finished surface nevertheless highly resistant to soiling, in particular to fingerprints. This is surprising in this respect as that usually electropolished surfaces with high gloss are particularly sensitive to soiling such as fingerprints. By the invention proposed successive process steps glass bead blasting, electropolishing, However, coating and baking of the coating will be total a shiny and obtained particularly low roughness surface of the metallic workpiece, the almost resistant to fingerprints is particularly lightweight and yet adhering contaminants to clean.
Bevorzugt werden beim Verfestigungsstrahlen Glaskörper, bestehend aus mindestens 65% Silizium eingesetzt, die mittels eines Druckluftstrahlgeräts mit hoher Geschwindigkeit gegen die zu behandelnde Oberfläche geschleudert werden.Prefers become solidifying rays glass body, consisting of at least 65% silicon used by means of a high-pressure air jet Speed are thrown against the surface to be treated.
Nach einem weiteren Vorschlag der Erfindung sind die zum Verfestigungsstrahlen eingesetzten Glaskörper kugelförmig ausgebildet, um eine besonders gleichmäßige Oberflächenbearbeitung zu erhalten.To Another proposal of the invention are those for solidification blasting inserted glass body spherical designed to obtain a particularly uniform surface finish.
Das vorangehend erläuterte Verfahren eignet sich insbesondere zur Oberflächenveredelung von Edelstahlblechen bzw. aus derartigen Edelstahlblechen hergestellten Werkstücken. Als Beispiel seien hier Gehäuse von Maschinen oder Schaltschränke z. B. für die Lebensmittelindustrie genannt.The explained above Method is particularly suitable for surface finishing of stainless steel sheets or workpieces produced from such stainless steel sheets. When Example are housing here of machines or control cabinets z. For example called the food industry.
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200810061263 DE102008061263B3 (en) | 2008-12-10 | 2008-12-10 | Metallic workpiece e.g. switch cabinet housing, refining method for use in food industry, involves coating surface of workpiece with nano-structured coating and annealing coating in temperature of specific degree Celsius |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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DE200810061263 DE102008061263B3 (en) | 2008-12-10 | 2008-12-10 | Metallic workpiece e.g. switch cabinet housing, refining method for use in food industry, involves coating surface of workpiece with nano-structured coating and annealing coating in temperature of specific degree Celsius |
Publications (1)
Publication Number | Publication Date |
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DE102008061263B3 true DE102008061263B3 (en) | 2009-12-03 |
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DE200810061263 Expired - Fee Related DE102008061263B3 (en) | 2008-12-10 | 2008-12-10 | Metallic workpiece e.g. switch cabinet housing, refining method for use in food industry, involves coating surface of workpiece with nano-structured coating and annealing coating in temperature of specific degree Celsius |
Country Status (1)
Country | Link |
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DE (1) | DE102008061263B3 (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19502893C1 (en) * | 1995-01-31 | 1996-09-19 | Hammer Lit Gmbh | Surface-finishing of corrosion resistant metal (alloy) objects |
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2008
- 2008-12-10 DE DE200810061263 patent/DE102008061263B3/en not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19502893C1 (en) * | 1995-01-31 | 1996-09-19 | Hammer Lit Gmbh | Surface-finishing of corrosion resistant metal (alloy) objects |
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Date | Code | Title | Description |
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8364 | No opposition during term of opposition | ||
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |