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Imitation gold electroplate liquid and electroplating method thereof

An electroplating solution and imitation gold technology, which is applied in the field of alloy electroplating solution, can solve the problem that it cannot fundamentally replace cyanide imitation gold electroplating solution, and achieve the effect of excellent covering ability, golden color and easy maintenance

Inactive Publication Date: 2016-01-27
苏州市金星工艺镀饰有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These electroplating solutions have their own advantages, but they also have their own limitations, and cannot fundamentally replace the cyanide imitation gold electroplating solution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] First, pretreat the substrate of the plated part according to the conventional pretreatment method. The substrate of the plated part is a low-carbon stainless steel substrate. After polishing with sandpaper, put it into acetone for ultrasonic cleaning for 5 minutes, immerse it in absolute ethanol for 1 minute, and deionize it. Rinse with water, then put in HF2v / v% and H 2 SO 4 Corrosion and activation in a 10v / v% mixed solution for 10s, finally rinsed with deionized water for 3 times, soaked in ultrapure water once, dried naturally, then placed in an oven at 80°C for drying.

[0020] Utilize high-vacuum radio frequency magnetron sputtering technology to deposit metal copper coating on the surface of the plated substrate after drying; the specific parameters are: the target material is high-purity metal copper, the sputtering power is 120W, the flow rate of argon gas is 20 sccm, the gas The pressure is 0.2Pa, the base material temperature is normal temperature, the sput...

Embodiment 2

[0025] First, pretreat the base material of the plated part according to the conventional pretreatment method. The base material of the plated part is a low-carbon stainless steel base material. Rinse with water, then put in HF3v / v% and H 2 SO 4 Corrosion and activation in a 10v / v% mixed solution for 10s, finally rinsed with deionized water for 3 times, soaked in ultrapure water once, dried naturally, then placed in an oven at 110°C for drying.

[0026] Utilize high-vacuum radio frequency magnetron sputtering technology to deposit metal copper coating on the surface of the plated substrate after drying; the specific parameters are: the target material is high-purity metal copper, the sputtering power is 120W, the flow rate of argon gas is 20 sccm, the gas The pressure is 0.2Pa, the base material temperature is normal temperature, the sputtering time is 10min, and the bright copper layer on the surface of the plated piece base material is 5 μm.

[0027] Put the bright copper ...

Embodiment 3

[0031] First, pretreat the substrate of the plated part according to the conventional pretreatment method. The substrate of the plated part is a low-carbon stainless steel substrate. After polishing with sandpaper, put it into acetone for ultrasonic cleaning for 5 minutes, immerse it in absolute ethanol for 1 minute, and deionize it. Rinse with water, then put in HF2v / v% and H 2 SO 4 Corrosion and activation in a 10v / v% mixed solution for 5s, finally rinsed with deionized water for 3 times, soaked in ultrapure water once, dried naturally, then placed in an oven at 70°C for drying.

[0032] Use vacuum evaporation to plate bright copper on the surface of the pretreated plated substrate. The conditions of vacuum evaporation are: the vapor deposition pressure is 0.5×10 -3 Pa, the evaporation temperature during evaporation is 1050°C. The bright copper layer on the surface of the plated piece substrate is 5 μm.

[0033] Put the bright copper plated parts into the plating tank fil...

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Abstract

The invention discloses imitation gold electroplate liquid and an electroplating method thereof. The electroplate liquid comprises, by massic volume and concentration, 150-200 g / L of potassium pyrophosphate, 40-50 g / L of copper sulfate, 3-5 g / L of tin pyrophosphate, 5-15 g / L of zinc sulfate, 10-30 g / L of glycerin, 10-30 g / L of succinimide, 20-30 g / L of nitrilotriacetic acid, 70-100 g / L of pyrophosphoric acid and 6-10 g / L of benzotriazole. Through potassium hydroxide or sodium oxide, the pH is adjusted to 7-9.3, and the temperature of the electroplate liquid is 20-55 DEG C. The imitation gold electroplate liquid is environmentally friendly, coordination is carried out through various coordination agents, and the electroplate liquid is good in stability and easy to maintain. An imitation gold layer obtained through the electroplate method is golden in color, good in brightness, good in binding force between the imitation gold layer and an electroplate piece base material, good in leveling capability and superior in covering capability. The method is wide in current density application range, and repeatability is good.

Description

technical field [0001] The invention belongs to the field of alloy electroplating solution, and in particular relates to an imitation gold electroplating solution and an electroplating method thereof. Background technique [0002] Gold plating is widely used in decorative plating. However, the application of pure gold electroplating is limited due to the high price, low hardness and poor wear resistance of gold. The golden color of the imitation gold coating can meet the decorative requirements, the hardness and wear resistance of the coating are greatly improved, and its cost is low. It is mostly used for decorative plating on jewelry, handicraft products, lamps, buttons, watches, lighters and other parts. It has obvious economic benefits and broad development prospects. Imitation gold electroplating mostly uses cyanide electroplating, the coating has fine crystallization, good dispersion and covering ability of the plating solution, and the color of the coating is simila...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D3/58
Inventor 冯正元冯育华
Owner 苏州市金星工艺镀饰有限公司
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