KR20160057112A - Method for producing a coated component and coated component - Google Patents

Abstract

The present invention relates to a method for producing a coated component, the method including the steps of: providing a basic body including fiber reinforced plastic; and directly applying coating of a ceramic material to the basic body. Further, the present invention relates to a coated component including a basic body of fiber reinforced plastic, and a coated part of a ceramic material directly arranged on the basic body.

Description

METHOD FOR PRODUCING A COATED COMPOUND AND COATED COMPONENT BACKGROUND OF THE INVENTION [0001]

The present invention relates to a method of producing coated parts and coated parts.

Various methods of producing coated parts are known from the prior art.

Document DE 93 05 806 U1 relates to a method of producing a printing roller. In this way, a coating of copper or copper alloy is produced by plasma spraying on a base body of thermoplastic fiber-reinforced plastic.

Document DE 10 2009 048 709 A1 discloses an additional method for producing composite parts of fiber reinforced plastics and metals.

Metal and metal alloys can be applied directly to fiber-reinforced plastics, but in the case of ceramic materials this is not possible. When the ceramic material is applied to a basic body comprising a fiber-reinforced plastic, in the state of the art an intermediate coating comprising an adhesive medium is always formed first on the basic body. For example, zinc is used as an adhesive medium. Therefore, additional processing steps are required for production, and materials for the adhesive medium are consumed.

Document US 4,997,704 A discloses a method for applying a ceramic coating to a fiber-reinforced material. Prior to applying the ceramic material, an adhesive intermediate coating is applied to the fiber-reinforced material.

Document EP 0 514 640 A1 discloses a method for applying a ceramic coating to a body by a thermal spray process. The base body comprises a synthetic resin coating comprising particulate material. The synthetic resin coating is treated by a thermal spray process before further coating is applied.

Document EP 0 273 298 A2 discloses a corrosion resistant coating which is bonded to a plastic material by a binding agent.

It is an object of the present invention to specify an improved technique for coating parts. In particular, it provides a non-corrosive adhesive background for coating.

This object is achieved by the method according to independent claim 1 and by the component according to independent claim 10. Advantageous embodiments form part of the dependent claims.

According to one aspect, a method of producing a coated component is provided. This method includes the following steps. Provided is a basic body comprising a fiber-reinforced plastic. The coating of the ceramic material is applied directly to the base body. There is no intermediate coating in the area between the base body and the coating including the ceramic material. In particular, such areas do not have an adhesive medium.

According to a further aspect, a coating body is formed comprising a base body made of fiber-reinforced plastic and a coating of ceramic material arranged directly on the base body.

Since there is no need to apply an adhesive medium, the number of process steps is reduced, which makes the process faster and more economical. In addition, the features of the part are improved. Corrosion of the adhesive medium, where corrosion has been common in the prior art, is prevented.

Fiber reinforced plastics (FRP) (also a fiber composite plastics structure or a fiber reinforced plastic composite material) is a material containing reinforcing fibers embedded in a plastic matrix. These matrices include reinforcing fibers bonded to the matrix by adhesive force or cohesive force.

The base body may comprise, for example, glass-fiber-reinforced plastic (GRP). Alternatively, the base body may comprise carbon-fiber-reinforced plastic (CRP), fiber reinforced polyamide (PA) or fiber reinforced epoxy resin (EP).

Coatings containing ceramic materials can cause dielectric strength of parts up to 40 kV. In addition, the coating comprising a ceramic material provides insulation of the underlying body arranged thereunder. Thus, the coating provides protection against excessive heat. Moreover, coatings comprising ceramic materials are wear resistant, very hard, pressure resistant, and provide very high coating strength.

Coatings comprising ceramic materials may be applied to the base body as a single layer or multilayer. In addition, it is possible to provide several layers including different ceramic materials to the basic body.

Coatings comprising ceramic materials can be applied with a coating thickness of 100 [mu] m to 3 mm. Once the curing is complete, the coating comprising the ceramic material may include a bond tensile strength of 10 N / mm2 or greater. In yet another embodiment, once the curing is complete, the coating comprising the ceramic material may comprise a bond tensile strength of 5 N / mm < 2 > or greater.

The base body may be intended to be provided on a substrate. The substrate may comprise a metal, for example, aluminum, a metal alloy, such as steel, or a non-metallic material. The substrate may well contain one of the above-mentioned materials or materials of that class.

Spraying a coating comprising a ceramic material onto a basic body may be provided. Advantageously, a coating comprising a ceramic material can be applied to the base body by thermal spraying. In thermal spraying, the adhesive, so-called spray adhesive, is melted, melted or melted inside or outside the spray burner. The adhesive is accelerated in the gas stream in the form of atomized particles and applied to the surface of the basic body to be coated. Formation of the coating can occur with this process. Suitable thermal spray processes include, for example, high-velocity oxy-fuel flame spraying (HVOF), vacuum plasma spraying (VPS) and atmospheric plasma spraying (APS) . Argon, hydrogen, nitrogen or a combination thereof may be used as the process gas for atmospheric plasma spraying. In addition, nitrogen, a nitrogen-argon mixture, an argon-hydrogen mixture or argon can be used as the carrier gas in the atmospheric plasma spray. Cooling may be performed by compressed air, carbon dioxide (CO ₂ ), or a combination thereof.

According to one embodiment, the coating is provided as an oxide ceramic material, for example a ceramic material comprising titanium dioxide (TiO ₂ ), chromium oxide (Cr ₂ O ₃ ) or aluminum oxide (Al ₂ O ₃ ) . Alternatively, the coating may be a ceramic material, including engineering ceramics or technical ceramics.

It may be provided that the coating of the ceramic material is applied in powder form to the basic body, for example by thermal spraying. The powder may have a purity of more than 95%, preferably 98% to 99.95%. The powder may be provided in any of the following powder forms: mixed ceramic material, water-sprayed ceramic material, gas-sprayed ceramic material, embedded ceramic material, chemically embedded ceramic material, agglomerated ceramic material, A sintered ceramic material, a coagulated and hollow ceramic material, a coagulated and compacted ceramic material, a fused and crushed ceramic material, a fused and crushed and mixed ceramic material, and a sintered and crushed ceramic material. The particles of the powder may include the following particle sizes: 10/5 μm, 22/5 μm, 45/16 μm, 25/5 μm, 45/20 μm and 30/10 μm. The particles of the powder may also comprise a particle size in any combination of the above-mentioned particle sizes. If the powder is applied to the basic body by thermal spraying, an internal axial powder feed, an internal radial powder feed, or an external powder feed may be performed.

Alternatively, the coating comprising the ceramic material can be applied in the form of a suspension, for example as an aqueous suspension or as an alcoholic suspension. The basic body may comprise a resin material. The resin material may be, for example, an amine resin, a phenol resin, a polyester resin, a vinyl ester resin, a polyamide resin, an epoxy resin, an anhydride resin or a bismaleimide-triazine resin. In addition, the base body may comprise any combination of the above-mentioned resins.

The part, in other words, both the basic body and the coating including the ceramic material, can be provided free of any electrically conductive material. In addition, the part may not contain any metallic material and / or metal alloy. Particularly, the part can be produced so as not to contain any metal bonding medium. Thus, the part can be produced as a non-corrosive part.

In addition, the base body can be provided to be produced as fibers of the cross layer. The fibers may be wound and / or laminated into a cross layer. For example, the crossover layer may be produced as a final columnar layer.

The basic body may comprise from 20 vol% to 80 vol%, from 20 vol% to 60 vol%, from 30 vol% to 60 vol%, or from 30 vol% to 50 vol%. The fibers may comprise glass, carbon, ceramic, plastic and / or natural fibers. The glass fibers may comprise, for example, R-glass, E-glass, C-glass, D-glass or S-glass.

The features described above in the context of the method are likewise applied to the part.

The element may be a roller comprising a rotationally symmetrical component, for example a cylindrical basic body on which a coating comprising a ceramic material is directly arranged. The part may be, for example, anilox roller or anilox adapter or anilox sleeve for flexographic printing, processing roller or processing adapter for corona treatment or processing sleeve.

In the following, further embodiments will be described in more detail with reference to the drawings.

Figure 1 is a diagram of the roller.
Figure 2 is a diagrammatic illustration of an additional roller.
3 is a diagram of another roller.
4 is a diagrammatic view of a roller according to a further embodiment.
Figure 5 is a diagrammatic view of a roller according to yet another embodiment.
Figure 6 is a diagram of the parts.
Figure 7 is a diagrammatic representation of an additional component.
Figure 8 is a diagrammatic representation of a sleeve or adapter.

In the following, the same reference numerals are used for the same parts.

Figure 1 shows a diagrammatic view of a roller comprising a tubular substrate 1, a coating 2 comprising a fiber-reinforced material and a coating 3 of a ceramic material. The studs 4 are arranged on both ends of the roller. The substrate 1 may comprise, for example, steel or aluminum. The coating 2 comprising a fiber-reinforced plastic material is used as an insulation barrier. The coating may comprise various types of fibers, for example, glass fibers, carbon fibers, ceramic fibers, plastic fibers and / or natural fibers. The fibers are embedded in the amine resin and applied to the tubular substrate 1 with the wound cross layer. The coating 3 of the ceramic material is applied directly to the fiber-reinforced coating 2. The ceramic coating 3 provides thermal insulation. In this embodiment, an oxide ceramic material is provided as a ceramic material.

Figure 2 shows a further embodiment of the roller. In this embodiment, the tubular substrate 1 is shortened such that the intermediate region 5 is formed between the end of the substrate 1 and the stud 4.

Fig. 3 shows a roller including the continuous tubular substrate 1. Fig.

Figure 4 shows a roller comprising a fiber-reinforced coating 2 on which a ceramic coating 3 is directly arranged. The fiber-reinforced coating is applied to a substrate 6 comprising, for example, steel or aluminum, comprising a solid material.

Figure 5 shows a roller comprising a tubular substrate 1, a fiber reinforced coating 2 and a ceramic coating 3, which are shortened. A receiving device 7 is formed on both ends of the roller.

Figures 6 and 7 illustrate diagrammatic representations of any desired shaped parts. In each case, a coating 8 of a ceramic material, for example an oxide ceramic material, is arranged directly on the fiber-reinforced basic body 9. According to an embodiment according to Fig. 7, a fiber-reinforced basic body 9 is arranged on a substrate 10.

Figure 8 shows a diagram of the adapter or sleeve. The coating 23 of a ceramic material, for example an oxide ceramic material, comprises a fiber-reinforced primary sleeve 20 comprising a compressible intermediate coating 21, and a fiber-reinforced primary body 21 formed directly on this intermediate coating 21 22). ≪ / RTI > In this embodiment, the intermediate coating 21 is arranged between the fiber-reinforced primary body 22 and the fiber-reinforced primary sleeve 20, and the intermediate coating 21 comprises a compressible covering material.

The above description, the claims and the features disclosed in the drawings may be individually and in any desired combination in the context of the practice of the invention.

Claims (10)

A method for producing a coated part,
Providing a base body of fiber-reinforced plastic; And
Applying a coating of a ceramic material directly to the base body. The method of claim 1, wherein the coating comprising a ceramic material is applied to the base body by thermal spraying. 3. The method of claim 1 or 2, wherein the coating of the ceramic material comprises an oxide ceramic material. The method according to any one of claims 1 to 3, wherein the coating of the ceramic material is applied in powder form to the basic body. 5. The method according to any one of claims 1 to 4, wherein the coating comprising a ceramic material is applied as a single layer or multilayer to the basic body. 6. The method according to any one of claims 1 to 5, wherein the base body comprises glass fiber reinforced plastic. 7. The method according to any one of claims 1 to 6, wherein the basic body comprises a resin material. 8. The method according to any one of claims 1 to 7, wherein the basic body comprises fibers wound in a cross layer. 9. The method according to any one of claims 1 to 8, wherein the basic body comprises a fiber content of from 20% by volume to 80% by volume. A coated component comprising a base body made of fiber-reinforced plastic and a coating of ceramic material arranged directly on the base body.

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