# US 10,766,064 B2 · Casting component and method for the application of an anticorrosive layer

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- Number: US 10,766,064 B2
- Document ID: US10766064B2
- Status: Granted
- Kind: B2
- Application number: 14/128,939
- Filed: 2012-06-22
- Published: 2014-07-10
- Granted: 2020-09-08
- Earliest claimed: 2011-06-24
- Assignees: Oskar Frech GmbH + Co. KG
- Applicants: Norbert Erhard; Helmar Dannenmann; Juergen Kurz; Andreas Sydlo; Daniel Gerner
- Inventors: Norbert Erhard; Helmar Dannenmann; Juergen Kurz; Andreas Sydlo; Daniel Gerner
- Web page: https://patentgrep.com/patent/US10766064B2

## CPC

- B22C 9/08: Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
- B22D 17/2015: {Means for forcing the molten metal into the die (for plastics B29C45/46)}
- C23C 18/1216: {Metal oxides (C23C18/1212 takes precedence)}
- C23C 18/122: {Inorganic polymers, e.g. silanes, polysilazanes, polysiloxanes}
- C23C 18/1225: {Deposition of multilayers of inorganic material}
- C23C 18/1241: {Metallic substrates}
- C23C 18/1254: {Sol or sol-gel processing}
- C23C 18/127: {Preformed particles}
- C23C 28/04: only coatings of inorganic non-metallic material
- C23C 30/00: Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process (C23C26/00, C23C28/00 take precedence)
- F27D 15/00: Handling or treating discharged material; Supports or receiving chambers therefor
- Y10T 428/256: Heavy metal or aluminum or compound thereof
- B22C: FOUNDRY MOULDING (moulding refractory materials in general B28B)
- B22D: CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES (shaping of plastics or substances in a plastic state B29C; metallurgical processing, selection of substances to be added to metal C21, C22)
- 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 (making metal-coated products by extrusion B21C23/22; covering with metal by connecting pre-existing layers to articles, see the relevant places, e.g. B21D39/00, B23K; metallising of glass C03C; metallising mortars, concrete, artificial stone, ceramics or natural stone C04B41/00; enamelling of, or applying a vitreous layer to, metals C23D; treating metal surfaces or coating of metals by electrolysis or electrophoresis C25D; single-crystal film growth C30B; by metallising textiles D06M11/83; decorating textiles by locally metallising D06Q1/04)
- F27D: DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A casting component and method for the application of an anticorrosive layer to a substrate, such as the casting component, are provided. The casting component for a device for casting a metal melt includes a metallic basic body and a melt contact surface region which is exposed to the metal melt during casting operation. In the casting component, the metallic basic body is provided in the melt contact surface region with an anticorrosive layer which is resistant to the metal melt and which is formed, using microparticles and/or nanoparticles of one or more substances from a substance group which includes borides, nitrides and carbides of the transition metals and their alloys and also of boron and silicon and Al2O3.

## Claims

### Claim 1

A casting component for a device for casting or handling a metal melt, the component comprising a metallic basic body and a melt contact surface region which is exposed to the metal melt during casting operation, wherein the metallic basic body is provided in the melt contact surface region with an anticorrosive layer which is resistant to the metal melt and which is a sol/gel layer, using, as a filler, at least one of microparticles or nanoparticles of one or more substances selected from the group consisting of borides, nitrides and carbides of the transition metals and their alloys, boron, silicon, and Al2O3, wherein
the sol/gel layer comprises a plurality of gel layer plies, at least one gel layer ply being formed without the microparticles or nanoparticles, and
the at least one gel layer ply formed without the microparticles or nanoparticles constitutes the outer layer ply in a depositing direction of the sol/gel layer.

### Claim 2 (depends on 1)

The casting component according to claim 1, wherein the microparticles or nanoparticles have an average particle size of between 50 nm and 50 μm.

### Claim 3 (depends on 2)

The casting component according to claim 2, wherein the microparticles or nanoparticles have an average particle size of between 100 nm and 30 μm.

### Claim 4 (depends on 1)

The casting component according to claim 1, wherein the anticorrosive layer is formed, using microparticles or nanoparticles composed of TiB2.

### Claim 5 (depends on 1)

The casting component according to claim 1, wherein the sol/gel layer has a zirconium-based or silicon-based gel former.

### Claim 6 (depends on 1)

The casting component according to claim 1, wherein the sol/gel layer contains an additionally administered alkali or alkaline earth metal salt or an additionally administered viscosity-setting polymer.

### Claim 7 (depends on 1)

The casting component according to claim 1, wherein at least two of the gel layer plies have microparticles or nanoparticles of identical or different substances.

### Claim 8 (depends on 1)

The casting component according to claim 1, wherein the basic body is formed from a steel material.

### Claim 9 (depends on 1)

The casting component according to claim 1, wherein the casting component is configured for use in a device for casting an aluminum melt.

### Claim 10 (depends on 1)

The casting component according to claim 1, wherein the casting component is configured for use in a metal diecasting machine.

### Claim 11

A casting component for a device for casting or handling a metal melt, the component comprising a metallic basic body and a melt contact surface region which is exposed to the metal melt during casting operation, wherein the metallic basic body is provided in the melt contact surface region with an anticorrosive layer which is resistant to the metal melt and which is a sol/gel layer, using, as a filler, at least one of microparticles or nanoparticles of one or more substances selected from the group consisting of borides, nitrides and carbides of the transition metals and their alloys, boron, silicon, and Al2O3, wherein the sol/gel layer comprises a plurality of gel layer plies, at least one gel layer ply being formed without the microparticles or nanoparticles, and the at least one gel layer ply formed without the microparticles or nanoparticles constitutes the outer layer ply in a depositing direction of the sol/gel layer, and wherein the casting component is configured for use as a casting fitting, a casting vessel, a melt furnace constituent, a melt conveying constituent, or a part of one of these diecasting machine constituents.

### Claim 12 (depends on 11)

The casting component according to claim 11, wherein the microparticles or nanoparticles have an average particle size of between 50 nm and 50 μm.

### Claim 13 (depends on 12)

The casting component according to claim 12, wherein the microparticles or nanoparticles have an average particle size of between 100 nm and 30 μm.

### Claim 14 (depends on 11)

The casting component according to claim 11, wherein the anticorrosive layer is formed, using microparticles or nanoparticles composed of TiB2.

### Claim 15 (depends on 11)

The casting component according to claim 11, wherein the sol/gel layer has a zirconium-based or silicon-based gel former.

### Claim 16 (depends on 11)

The casting component according to claim 11, wherein the sol/gel layer contains an additionally administered alkali or alkaline earth metal salt or an additionally administered viscosity-setting polymer.

### Claim 17 (depends on 11)

The casting component according to claim 11, wherein at least two of the gel layer plies have microparticles or nanoparticles of identical or different substances.

### Claim 18 (depends on 11)

The casting component according to claim 11, wherein the basic body is formed from a steel material.

### Claim 19 (depends on 11)

The casting component according to claim 11, wherein the casting component is configured for use in a device for casting an aluminum melt.

### Claim 20 (depends on 11)

The casting component according to claim 11, wherein the casting component is configured for use in a metal diecasting machine.