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Copper product surface thermal coloring process method

A process method and technology of copper products, applied in the direction of metal material coating process, etc., can solve the problems of single color, not very strong artistic expression, not bright enough color, etc., to achieve the effect of improving adhesion

Active Publication Date: 2014-12-24
杭州朱炳仁铜艺股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the thermal coloring process used on the surface of general copper products and handicrafts often has a single color, and the color is not bright enough, and the artistic expression is not very strong.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] 1. Surface pretreatment of copper crafts

[0037] 1.1 Make copper incense burner according to product design requirements

[0038] 1.2 The surface pretreatment of the product, put the copper incense burner into the sandblasting machine and use 250 mesh glass fine sand to carry out sandblasting on the surface, clean and clean, then rinse with clean water.

[0039] 2. The surface color of the copper incense burner

[0040] 2.1 Using the method of thermal oxidation coloring, use a potassium sulfide aqueous solution with a concentration of 8 g / L to make a background color on the surface of the copper product from top to bottom on the entire surface of the copper product to obtain a copper product with a thickness of the background color layer of 10 μm;

[0041] 2.2 Use a plastic scouring pad to gently wipe off the floating dust and surface color layer on the above-mentioned copper products that have been finished with the background color, then rinse them with clean water,...

Embodiment 2

[0049] 1. Surface pretreatment of copper crafts

[0050] 1.1 Make copper handicraft horse ornaments according to product design requirements

[0051] 1.2 Product surface pretreatment, put the copper handicraft horse ornaments into the sandblasting machine with 320 mesh glass fine sand for surface sandblasting, clean and clean, then rinse with clean water.

[0052] 2. The surface of the copper handicraft horse ornament is black

[0053] 2.1 Preparation of colored black slurry: 3.5 grams of iron oxide red powder, 3.5 grams of iron oxide yellow powder, 1 gram of phthalocyanine blue, 0.5 grams of dispersant polyethylene glycol, 1 liter of water, grind and disperse, and filter through a 100-mesh filter to obtain colored black pulp;

[0054] 2.2 Using the method of thermal oxidation coloring, use a potassium sulfide aqueous solution with a concentration of 20 g / L to make a background color on the surface of the copper product from top to bottom on the entire surface of the copper ...

Embodiment 3

[0065] 1. Surface pretreatment of copper crafts

[0066] 1.1 Make copper handicraft cow ornaments according to product design requirements;

[0067] 1.2 Surface pretreatment of the product. Polish and clean the surface of the copper handicraft cow ornament with a plastic scouring pad and a copper brush. After cleaning, rinse it with clean water.

[0068] 2. The surface of the copper handicraft cow ornament is black

[0069] 2.1 Preparation of colored black slurry: 4 grams of iron oxide red powder, 4 grams of iron oxide yellow powder, 1.2 grams of phthalocyanine blue, 0.2 grams of polyethylene glycol as a dispersant, 1 liter of water, grind and disperse, and filter through a 200-mesh filter to obtain colored black pulp;

[0070] 2.2 Copper handicraft cow ornaments are blackened with copper blackening agent as the background color to obtain copper products with a thickness of the background color layer of about 15 μm;

[0071] 2.3 Use a plastic scouring pad to gently wipe off...

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Abstract

The invention discloses a copper product surface thermal coloring process method. The method comprises the following steps: (1) copper product surface pretreatment; (2) copper product surface under-painting; (3) marbling coloring; and (4) treatment after coloring. According to the process method disclosed by the invention, by virtue of a formula of marbling coloring slurry and the design of coloring modes, the copper product surface is clear in coloring pattern, vivid in marble imitation effect and strong in adhesive force, has good temperature resistance and weather resistance, and is bright and colorful in colored color layer, and can be widely applied to coloring decoration and the like of the surfaces of copper crafts; and the process method disclosed by the invention is low in cost and simple and convenient to operate.

Description

technical field [0001] The invention relates to a metal surface treatment method, in particular to a production process for making the surface of a copper product have a realistic marble effect. Background technique [0002] Most of the traditional bronze coloring methods use cold coloring or natural coloring. The method is to put the copper pieces outdoors or bury them in the soil, and add some formula to make them change color on the surface slowly. Bronze chemical coloring is more common. Bronze chemical coloring (BRONZE PATINA), also known as bronze chemical thermal coloring in China, uses heating as a catalyst to promote a chemical reaction between the compound and the bronze surface, and naturally produces various colors to achieve the effect of decorating the bronze surface. The color of the bronze surface, the color spot in the traditional sense, is generally very monotonous: limited to a few colors such as patina, iron red spot, and black tone. Representative colo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C22/73C23C22/05
Inventor 张道权胡万明朱军岷
Owner 杭州朱炳仁铜艺股份有限公司
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