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Copper or copper alloy surface coloring treatment method

A treatment method, a surface coloring technology, applied in the field of copper or copper alloy surface treatment, copper or copper alloy surface coloring treatment, can solve the problems of increasing the complexity of the process, etc.

Inactive Publication Date: 2013-10-16
JIAXING VOCATIONAL TECHN COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above methods all have good coloring effects, but the above processes all need to be etched, which is equivalent to two coloring treatments, which increases the complexity of the process, and all need to use selenium to achieve the coloring effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] The surface of the copper or copper alloy to be colored is polished with a polishing machine to remove burrs, rust stains and oxides on the surface, and then the oil stain on the surface is removed with a sodium carbonate solution, and then the polishing treatment is carried out. The polishing treatment preferably adopts sulfuric acid, Polishing with hydrochloric acid-based mixed acid;

[0058] Performing activation treatment on the surface of the copper or copper alloy to be colored after the above pretreatment to remove the oxide film on the surface of copper or copper alloy, the activation treatment is to soak the copper or copper alloy in 5wt% dilute sulfuric acid solution for 10 to 15 seconds;

[0059] Soak the activated copper or copper alloy in the coloring solution, and control the temperature at 70°C to 90°C for 3 to 10 minutes, preferably at 80°C for 5 minutes; coloring After treatment, an ancient green color is formed on the surface of copper or copper alloy,...

Embodiment 2

[0065] The surface of the copper or copper alloy to be colored is polished with a polishing machine to remove burrs, rust stains and oxides on the surface, and then the oil stain on the surface is removed with a sodium carbonate solution, and then the polishing treatment is carried out. The polishing treatment preferably adopts sulfuric acid, Polishing with hydrochloric acid-based mixed acid;

[0066] Performing activation treatment on the surface of the copper or copper alloy to be colored after the above pretreatment to remove the oxide film on the surface of copper or copper alloy, the activation treatment is to soak the copper or copper alloy in 5wt% dilute sulfuric acid solution for 10 to 15 seconds;

[0067] Soak the activated copper or copper alloy in the coloring solution, and control the temperature at 90°C for 3 minutes; after the coloring treatment, an ancient green color is formed on the surface of the copper or copper alloy, and the coloring solution is mainly Aqu...

Embodiment 3

[0073] The surface of the copper or copper alloy to be colored is polished with a polishing machine to remove burrs, rust stains and oxides on the surface, and then the oil stain on the surface is removed with a sodium carbonate solution, and then the polishing treatment is carried out. The polishing treatment preferably adopts sulfuric acid, Polishing with hydrochloric acid-based mixed acid;

[0074] Performing activation treatment on the surface of the copper or copper alloy to be colored after the above pretreatment to remove the oxide film on the surface of copper or copper alloy, the activation treatment is to soak the copper or copper alloy in 5wt% dilute sulfuric acid solution for 10 to 15 seconds;

[0075] The activated copper or copper alloy is soaked in the coloring solution, and the temperature is controlled at 70°C for 10 minutes of coloring treatment; after the coloring treatment, an ancient green is formed on the surface of the copper or copper alloy, and the colo...

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PUM

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Abstract

The invention relates to a copper or copper alloy surface coloring treatment method, and belongs to the technical field of metal surface coloring treatment. The copper or copper alloy surface coloring treatment method comprises the following steps: grinding, deoiling and polishing the surface of copper or copper alloy to be colored; activating the surface of the copper or copper alloy to be colored to remove an oxide film from the surface of the copper or copper alloy; soaking the treated copper or copper alloy into coloring liquid, and coloring by controlling the temperature at 25-90 DEG C; cleaning, performing antioxidation treatment and painting the colored copper or copper alloy to obtain the copper or copper alloy with the colored surface. The copper or copper alloy surface coloring treatment method has the advantages of simple process, easy operation, good coloring density, high coloring stability and attractive appearance.

Description

technical field [0001] The invention relates to copper or copper alloy surface treatment, more specifically, relates to a copper or copper alloy surface coloring treatment method, and belongs to the technical field of metal surface coloring treatment. Background technique [0002] With the development of social economy, the use of copper ornaments is not limited to doors and windows, but has widely penetrated into architectural decoration and so on. Copper or copper alloys have better corrosion resistance and are stable in dry air. Many surface treatments can be performed on the surface to show different effects. Therefore, copper decoration has become the darling of high-end buildings and other fields. According to different needs, the surface of copper or copper alloy can be treated into different colors, such as imitation copper, ancient green, bronze or green. For example, the Chinese patent application (publication number: CN102991264A) discloses a method for making a...

Claims

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Application Information

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IPC IPC(8): C23C22/52
Inventor 肖丽娜肖云
Owner JIAXING VOCATIONAL TECHN COLLEGE