Preparation method of silver product with colored surface

A silver product and color technology, applied in the direction of metal material coating process, etc., can solve the problems such as glaze can not completely cover the silver tire, the silver edge turns yellow and black, and loses value.

Active Publication Date: 2015-02-25
GUOJIN GOLD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The glaze on the surface of colored silver jewelry cannot completely cover the silver body, so any place where the silver edge is exposed is relatively easy to oxidize, and the oxidized silver edge will turn yellow and black, and lose its due value.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0024] The invention provides a kind of preparation method of the silver product with color on the surface, comprises the following steps:

[0025] The surface of the degreased silver product is reacted with a coloring agent to obtain a silver product with a colored surface.

[0026] The invention utilizes the active chemical properties of silver to reflect different coloring reagents on the surface of silver products, so that the silver on the surface of silver products reacts with the coloring reagents to obtain reaction products of different colors, so that the surface of silver products presents different colors . In the present invention, preferably, copper sulfate, sodium chloride and acetic acid are used as the coloring reagent, and the coloring reagent is reacted with the surface of the silver product, and a brown reaction product is obtained on the surface of the silver product, so that the surface obtained is brown. Silver products, more preferably the silver produc...

Embodiment 1

[0051] At 8°C, place the silver product to be treated in a degreasing solution, which includes 5g / L of sodium carbonate, 2g / L of sodium hydroxide and 15g / L of washing spirit, and repeatedly smear and wipe the metal with absorbent cotton Rinse the surface with water until the metal surface shows a continuous water film to complete the degreasing of silver products;

[0052] 1g of copper sulfate is mixed with 2g of salt, and 10g of vinegar is added thereto to obtain a colored solution;

[0053] Immerse the degreased silver product in the coloring solution, and after reacting for 5 minutes, the surface of the silver product turns dark brown;

[0054] The obtained silver product with a tea-brown surface was baked at 140° C. for 4 minutes, and a pink color appeared on the surface of the silver product; on the obtained silver product with a pink surface, smear sodium bicarbonate and wipe it to obtain a brown silver product;

[0055] After completing the coloring of the silver produ...

Embodiment 2

[0060] At 5°C, place the silver product to be treated in a degreasing solution, which includes 2g / L sodium carbonate, 5g / L sodium hydroxide and 20g / L washing spirit, and repeatedly smear and wipe the metal with absorbent cotton Rinse the surface with water until the metal surface shows a continuous water film to complete the degreasing of silver products;

[0061] 1g of copper sulfate is mixed with 3g of salt, and 10g of vinegar is added thereto to obtain a colored solution;

[0062] Immerse the degreased silver product in the coloring solution, and after reacting for 5 minutes, the surface of the silver product turns dark brown;

[0063] The silver product with tea-brown surface obtained is baked at 160° C. for 2 min, and the surface of silver product appears pink; smear sodium bicarbonate on the silver product with pink surface obtained, and wipe to obtain brown silver product; complete the silver product After the coloring, the silver product on the brown surface obtained ...

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Abstract

The invention provides a preparation method of a silver product with a colored surface. The preparation method comprises the following steps: removing grease from the surface of a silver product, and then making a coloring agent carry out reactions with the surface of the silver product to obtain a silver product with a color surface. The preparation method comprises the following specific steps: mixing copper sulphate, sodium chloride, and acetic acid to obtain a mixed solution taken as the coloring agent; immersing a silver product into the coloring agent, soaking, and making the coloring agent carry out reactions with the silver of the silver product surface, wherein the copper sulphate will be reduced in the presence of acetic acid, thus a copper-containing coating is formed on the surface of the silver product, moreover, the acetic acid affects the color changing, a brown layer is formed on the silver product surface, at the same time due to the existence of sodium chloride the copper coating can be tightly combined with the silver product surface, and a brown silver product is obtained. The obtained brown silver product has a stable property in the air, and will not be oxidized or faded.

Description

technical field [0001] The invention relates to the technical field of metal products, in particular to a method for preparing silver products with colored surfaces. Background technique [0002] Silver is a beautiful silver-white metal, it has good ductility, and its electrical conductivity and heat transfer are the highest among all metals. Due to the unique and excellent characteristics of silver, people once gave it double value as currency and decoration. The British pound and the silver dollar used before the liberation of our country are silver-based silver and copper alloys. Silvery white, with soft and bright luster, it is a favorite decoration of ethnic minorities, Buddhists and Muslims; silver jewelry is also the first choice for newborn babies from people of all nationalities in the country; The black silver jewelry inlaid with light blue turquoise brings people the infinite reverie of ancient civilization; in China, sterling silver jewelry has gradually become ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C22/58
CPCC23C22/58
Inventor 廖斐鸣
Owner GUOJIN GOLD CO LTD
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