Chemical coloring method for copper and alloys of copper

A chemical coloring, copper alloy technology, applied in the direction of metal material coating process, can solve problems such as troubles and imperfections, and achieve the effect of uniform tooth color, good corrosion resistance and strong color fastness

Active Publication Date: 2011-04-27
HUA SHENG ZIPPER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The bronze color is elegant, and it is a popular decorative coating recently. With the continuous improvement of people's living standards, people pay more and more attention to the matching of clothes, especially the application of antique copper color in the copper alloy zipper industry, making this This new concept of using zippers to decorate clothing has new creative elements, and this antique copper color has also become a quite popular color, but the current method of applying bronze color to the surface of copper and copper alloys is still not perfect. Troubled by the industry

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] First, the surface of the copper alloy zipper to be colored is mechanically polished, refined and polished, and then the grease on the cloth belt and zipper is removed with degreasing powder. After cleaning, the oxide film on the surface is removed with dilute sulfuric acid to activate the surface. Clean it and put it in a mixed solution of 85% phosphoric acid: 20ml / L, selenite: 5g / L, ammonium persulfate: 5g / L, sodium hypophosphite: 12g / L to microetch the zipper surface Processing time is more than 10 seconds, and then put in the ingredients of 85% phosphoric acid: 10ml / L, 98% sulfuric acid: 10ml / L selenite: 10g / L, ammonium persulfate: 30g / L, copper sulfate pentahydrate: 10g / L chemical coloring liquid for coloring for 5 seconds.

Embodiment 2

[0029] Grind and polish the surface of the copper alloy zipper to be colored, remove the oil on the cloth belt and zipper with degreasing powder, remove the oxide film on the surface with dilute sulfuric acid, activate the surface, clean it, and then put it into the composition A mixed solution of 85% phosphoric acid: 50ml / L, selenous acid: 10g / L, ammonium persulfate: 50g / L, and sodium hypophosphite: 30g / L is used to microetch the surface of the zipper. The time is 10 Seconds or more, then put in the chemical coloring of 85% phosphoric acid: 8ml / L, 98% sulfuric acid: 7ml / L selenite: 6g / L, ammonium persulfate: 26g / L, copper sulfate pentahydrate: 7g / L The coloring process is performed in the liquid for 5 seconds.

Embodiment 3

[0031] Polish the surface of the copper alloy zipper to be colored, finely polish it, remove the oil stains on the cloth belt and the zipper with degreasing powder, remove the oxide film on the surface with dilute sulfuric acid, activate the surface, clean it, and then put it Enter the mixed solution of 85% phosphoric acid: 30ml / L, selenite: 8g / L, ammonium persulfate: 28g / L, sodium hypophosphite: 20g / L to microetch the zipper surface for 10 seconds Above, make a layer of light yellow zinc-rich film formed on the surface of the copper alloy, take it out and clean it, put in 85% phosphoric acid: 2ml / L, 98% sulfuric acid: 2ml / L, selenite: 0.5 / L, Ammonium persulfate: 20 g / L, copper sulfate pentahydrate: 5 g / L chemical coloring liquid is subjected to a coloring treatment for 5 seconds.

[0032] After the surface treatment and coloring procedures of the above three embodiments are implemented, the zinc-rich film layer on the surface of the zipper reacts with the chemical coloring solut...

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PUM

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Abstract

The invention discloses a chemical coloring method for copper and alloys of copper, which comprises the following steps of: firstly, abrading and polishing the surface of an copper alloy to be colored; and then, activating the surface of the copper alloy to be colored and washing; microetching the surface of the copper alloy to form a light yellow zinc-enriched membrane layer on the surface of the copper alloy; reacting making the zinc-enriched membrane layer on the surface of the copper alloy react with chemical coloring liquid to generate a metallic compound membrane layer of selenium, wherein the color of the metallic compound membrane layer is reddish black, also calledi.e. red bronze color. A zipper made by the method disclosed in the invention has simulated bronze teeth which have even color and strong color fastness.

Description

Technical field [0001] The invention relates to the field of metal surface treatment, in particular to a chemical coloring method for the bronze color of copper and its alloys, and is especially suitable for the chemical coloring method for bronze color of metal zippers and related accessories. Background technique [0002] The bronze color is elegant, and it is a popular decorative coating recently. With the continuous improvement of people's living standards, people pay more attention to dress matching, especially the application of antique copper color in the copper alloy zipper industry. The new concept of using zippers to decorate clothing has new creative elements. At the same time, this antique copper color has become a popular color. The current method of applying bronze on the surface of copper and copper alloys is not perfect. The industry is troubled. Summary of the invention [0003] In view of the shortcomings of the prior art, the present invention provides a method...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C22/07
Inventor 黄斯华桑商斌李婉卿赵林梅
Owner HUA SHENG ZIPPER
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