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Coloring method for red spot copper

A spot copper and red technology, applied in the direction of metal material coating process, can solve the problems of scarcity of raw materials, small production scale, complex processing, etc., and achieve the effect of low production cost, low cost and abundant raw materials

Inactive Publication Date: 2013-01-30
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the scarcity of raw materials, complex processing, high cost and small production scale, "raw spots" can only be used to make simple and small tripods, furnaces, bottles, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Embodiment 1: the coloring method of the red spotted copper of the present embodiment:

[0016] (1) Pre-treatment of coloring: Grind the copper-zinc alloy casting with a copper content of 93wt% with sandpaper to ensure that the surface of the casting is smooth without pits, soak in hydrochloric acid with a concentration of 10mol / L to remove the surface oxide layer, and then clean the casting clean;

[0017] (2) Spot treatment: put the cleaned casting into a spot solution consisting of 8.1wt% ferric chloride, 9.6wt% hydrochloric acid, and 0.8wt% potassium chloride for 5 minutes, and the castings will appear different sizes. etc., and then clean the castings after spotting to ensure that there is no spotting solution on the surface of the castings;

[0018] (3) Coloring process: Put the casting obtained in step (2) into the coloring solution whose composition and solid-to-liquid ratio are copper sulfate pentahydrate: sodium chloride: sodium pyrophosphate: distilled water...

Embodiment 2

[0019] Embodiment 2: the coloring method of the red spotted copper of the present embodiment:

[0020] (1) Pre-treatment of coloring: Grind the copper-zinc alloy casting with a copper content of 96wt% with sandpaper to ensure that the surface of the casting is smooth without pits, soak in hydrochloric acid with a concentration of 11mol / L to remove the surface oxide layer, and then clean the casting clean;

[0021] (2) Spot treatment: put the cleaned casting into a spot solution consisting of 7wt% ferric chloride, 10wt% hydrochloric acid, and 0.5wt% potassium chloride for 8 minutes, and spots of various sizes will appear on the casting. spots, and then clean the castings after spotting to ensure that there is no spotting solution on the surface of the castings;

[0022] (3) Coloring process: put the casting obtained in step (2) into the coloring solution whose composition and solid-to-liquid ratio are copper sulfate pentahydrate: sodium chloride: sodium pyrophosphate: distille...

Embodiment 3

[0023] Embodiment 3: the coloring method of the red spotted copper of the present embodiment:

[0024] (1) Pre-treatment of coloring: Grind the copper-zinc alloy casting with a copper content of 97wt% with sandpaper to ensure that the surface of the casting is smooth without pits, soak in hydrochloric acid with a concentration of 12mol / L to remove the surface oxide layer, and then clean the casting clean;

[0025] (2) Spot treatment: put the cleaned casting into a spot solution consisting of 9wt% ferric chloride, 8wt% hydrochloric acid, and 1wt% potassium chloride for 10 minutes, and spots of various sizes will appear on the casting. , and then the castings after spotting are cleaned to ensure that there is no spotting solution on the surface of the castings;

[0026] (3) Coloring process: Put the casting obtained in step (2) into the coloring solution whose composition and solid-to-liquid ratio are copper sulfate pentahydrate: sodium chloride: sodium pyrophosphate: distilled...

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PUM

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Abstract

The present invention relates to a coloring method for a red spot copper, and belongs to the field of metal material surface treatment and handicraft product production. The coloring method comprises: selecting a copper-zinc alloy casting having a copper content of 97-93%, carrying out a coloring pre-treatment, placing the casting in a spot emergence solution to carry out erosion for 5-10 minutes to emerge spots, and placing the spot emerging casting in a coloring solution to soak for 8-10 hours to appear red, wherein a specific time can be controlled according to color requirements of the specific handicraft product, and the longer the soaking time in the solution is, the more significant the red coloring effect is. The preparation method has the following advantages that: operation is simple; production cost is low; a production period is short; no product shape limitation exists; the product has a beautiful color; and the like.

Description

technical field [0001] The invention relates to a coloring method of red spotted copper, in particular to a coloring formula and a process thereof, and belongs to the field of surface treatment of metal materials and handicraft production. Background technique [0002] Bornite is a unique brass in Yunnan. It is made of high-grade copper-based alloy materials through modeling design, casting, precision grinding and other complicated follow-up processes. It has patterns of mixed shapes and colors. Spots are the most valuable feature of spotted copper. The spotted spots appearing in the copper base material make spotted copper handicrafts have a wonderful color of red spots and golden yellow. It is a special craft unique to China. Its brownish-red surface, showing the markings, has a simple, simple and elegant feeling, and it can be called the crown of metal crafts. Its surface shows a variety of irregular magnificent patterns and golden and red interlaced colors. It is a uniq...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C22/07C23C22/78
Inventor 朱心昆龙燕龚玉兰任世影吴小香
Owner KUNMING UNIV OF SCI & TECH
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