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Chemical coloring method for copper alloys

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

Active Publication Date: 2012-07-18
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

[0026] First of all, the surface of the copper alloy zipper to be colored is mechanically polished, refined and polished, and then the oil stain on the cloth tape and zipper is removed with degreasing powder. After cleaning, the oxide film layer on the surface is removed with dilute sulfuric acid to activate the surface. Clean it and put it into a mixed solution of 85% phosphoric acid: 20ml / L, selenous acid: 5g / L, ammonium persulfate: 5g / L, sodium hypophosphite: 12g / L to micro-etch the surface of the zipper The treatment time is more than 10 seconds, and then the ingredients are 85% phosphoric acid: 10ml / L, 98% sulfuric acid: 10ml / L selenous acid: 10g / L, ammonium persulfate: 30g / L, copper sulfate pentahydrate: 10g / L of chemical coloring solution for 5 seconds of coloring treatment.

Embodiment 2

[0028] Grind and polish the surface of the copper alloy zipper to be colored, use degreasing powder to remove the oil on the cloth tape and zipper, use dilute sulfuric acid to remove the oxide film on the surface, activate the surface, clean it and then put it into the ingredients For 85% phosphoric acid: 50ml / L, selenous acid: 10g / L, ammonium persulfate: 50g / L, sodium hypophosphite: 30g / L mixed solution carries out micro-etching treatment to the slide fastener surface, and the time is 10 For more than a second, then add chemical coloring with ingredients of 85% phosphoric acid: 8ml / L, 98% sulfuric acid: 7ml / L selenous acid: 6g / L, ammonium persulfate: 26g / L, copper sulfate pentahydrate: 7g / L The coloring process is carried out in the liquid for 5 seconds.

Embodiment 3

[0030] Grind and polish the surface of the copper alloy zipper to be colored, use degreasing powder to remove the oil stains on the cloth tape and zipper, use dilute sulfuric acid to remove the oxide film on the surface, activate the surface, clean it and put it away Into the mixed solution of 85% phosphoric acid: 30ml / L, selenous acid: 8g / L, ammonium persulfate: 28g / L, sodium hypophosphite: 20g / L to carry out micro-etching treatment on the surface of the zipper, and the time is 10 seconds Above, after making the surface of copper alloy form a light yellow zinc-rich film layer, take it out and clean it up, put in the composition of 85% phosphoric acid: 2ml / L, 98% sulfuric acid: 2ml / L, selenous acid: 0.5 / L, Ammonium persulfate: 20 g / L, copper sulfate pentahydrate: 5 g / L chemical coloring solution, coloring treatment was performed for 5 seconds.

[0031] After implementing the surface treatment and coloring processes of the above three embodiments, the zinc-rich film layer on th...

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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 bronzed copper and its alloys, and is especially suitable for the bronzed chemical coloring method for 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 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. The industry is troubled. Contents of the invention [0003] Aiming at the deficiencies of the prior art, the pre...

Claims

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Application Information

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Patent Type & Authority Patents(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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