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Technological process for dying light antique bronze color on surface of brass products

A bronze color and device surface technology, which is applied in special art surface treatment, metal material coating technology, decorative art, etc., can solve the problems of highly toxic reagents or complex processes, long dyeing time, etc., to achieve easy mastery and operation, process Simple, Inexpensive Effects

Inactive Publication Date: 2008-11-26
SHANGHAI UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] A previous patent (CN1089904A) introduced a method of dyeing zinc alloy into a bronze color, which is to pre-plate the neutral nickel-pyrophosphate copper plating base with zinc-copper-rare earth alloy or zinc-aluminum-rare earth alloy- Bronze treatment in acidic bright copper-potassium persulfate alkaline solution, the process of this method is complicated, the dyeing time is long and the copper plating process is not easy to master
In addition, some researchers have proposed various surface aging processes for the dyeing of brass zippers, but to varying degrees there are problems such as complicated processes, highly toxic reagents used, or high dyeing costs.

Method used

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  • Technological process for dying light antique bronze color on surface of brass products
  • Technological process for dying light antique bronze color on surface of brass products
  • Technological process for dying light antique bronze color on surface of brass products

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The technological process and steps of the present embodiment are as follows:

[0022] 1. Prepare light bronze staining solution (1): mix 10g KMnO 4 or K 2 S 2 o 8 or NH 4 S 2 o 8 Dissolve one of them in 200ml of water, then add 20g of CuSO to the solution 4 ·5H 2 O or CuCl 2 , and stir evenly to form a mixed solution.

[0023] 2. Cut 10cm off the brass zipper, soak it in 5% NaOH solution at 70 degrees Celsius for 10 minutes to remove oil, then wash it with water and dry it.

[0024] 3. Put the brass zipper that has been degreased and clean into the above-mentioned light bronze staining solution (1) at 80 degrees Celsius, and dye it for 5 minutes, then take it out, wash and dry.

[0025] 4. Use a cloth wheel polisher to polish with a small amount of paraffin wax, and finally get a light bronze-colored brass zipper with uniform surface color and strong combination of color layers.

Embodiment 2

[0027] The technological process and steps of the present embodiment are as follows:

[0028] 1. Prepare light bronze staining solution (2): mix 5gKMnO 4 and 5gK 2 S 2 o 8 Dissolve in 200ml water, then add 20g CuSO to the solution 4 ·5H 2 O or CuCl 2 , and stir evenly to form a mixed solution.

[0029] 2. Cut 10cm off the brass zipper, soak it in 5% NaOH solution at 70 degrees Celsius for 10 minutes to remove oil, then wash it with water and dry it.

[0030] 3. Put the brass zipper that has been degreased and clean into the above-mentioned light bronze dyeing solution (2) at 80 degrees Celsius, and dye it for 15 minutes, then take it out, wash and dry.

[0031] 4. Use a cloth wheel polisher to polish with a small amount of paraffin wax, and finally get a light bronze-colored brass zipper with uniform surface color and strong combination of color layers.

Embodiment 3

[0033] The technological process and steps of the present embodiment are as follows:

[0034] 1. Prepare light bronze staining solution (3): mix 5gKMnO 4 and 5gNH 4 S 2 o 8 Dissolve in 200ml water, then add 20g CuSO to the solution 4 ·5H 2 O or CuCl 2 , and stir evenly to form a mixed solution.

[0035] 2. Cut 10cm off the brass zipper, soak it in 5% NaOH solution at 70 degrees Celsius for 10 minutes to remove oil, then wash it with water and dry it.

[0036] 3. Put the brass zipper that has been degreased and clean into the above-mentioned light bronze staining solution (3) at 80 degrees Celsius, and dye it for 15 minutes, then take it out, wash and dry.

[0037] 4. Use a cloth wheel polisher to polish with a small amount of paraffin wax, and finally get a light bronze-colored brass zipper with uniform surface color and strong combination of color layers.

[0038] The color and appearance of the brass zipper dyeing product obtained in the above-mentioned examples are ...

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Abstract

The invention relates to a technique of painting light bronze on the surface of a brass (copper-zinc) device, which belongs to the technique field of processing technology of metal surface finish and plating. The invention is characterized in that a copper device with light bronze surface can be got by first washing the brass device with hot lye and then dyeing the device by socking the device into a light bronze staining solution and then by buffing and waxing. The light bronze staining solution is a mixed solution which is made by mixing any one or two solutions of the three solutions: KMnO4 solution or K2S2O8 solution or NH4S2O8 solution with certain concentration with any one solution of the two solutions: CuSO4.5H2O solution or CuC12 solution. The method of the invention is a brass device staining method which is simple in technique, easy in operation and low in cost. The method has the advantages that the dyeing quality is uniform and good and the color is steady. More particularly, the method is suitable for making antique reproduction brass artwork and has good exterior effect.

Description

Technical field: [0001] The invention relates to a process for dyeing the surface of brass (copper-zinc alloy) utensils into a light bronze color, and belongs to the technical field of metal surface finishing and plating processing technology. Background technique: [0002] Some utensils made of brass, such as some brass zippers and handicrafts, before they go on the market, in order to improve the grade of the product and the needs of antiques, most of them need to be dyed. The dyed colors are mainly bronze, imitation cupronickel Color, light bronze, black lacquer bronze, etc., are called "old-fashioned" in the field of antique handicraft processing, that is, the reaction of brass is accelerated through surface treatment, so that brass products show a bronze-like appearance in a short period of time. Color and texture. [0003] A previous patent (CN1089904A) introduced a method of dyeing zinc alloy into a bronze color, which is to pre-plate the neutral nickel-pyrophosphate...

Claims

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Application Information

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IPC IPC(8): C23C22/63B44D5/00B44F9/10
Inventor 王超高庆娟钟庆东周国治鲁雄刚
Owner SHANGHAI UNIV
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