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Plating product and method for producing the same

A product and coating technology, which is applied in the field of electroplating products and their preparation, can solve the problems that electroplating products are prone to wear or corrosion, and achieve the effect of high vibration wear resistance, corrosion resistance and good comprehensive performance

Inactive Publication Date: 2008-06-11
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an electroplating product with good vibration wear resistance and corrosion resistance in order to overcome the shortcomings of existing electroplating products that are prone to wear or corrosion

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0020] The preparation method of the electroplated product provided by the present invention comprises electroplating the base material in a plating solution containing copper ions, stannous ions and complexing agents, forming a copper-tin alloy coating on the surface of the base material, wherein the electroplating process Including a plurality of electroplating stages, the molar percentage of copper ions in the plating solution used in at least one electroplating stage accounts for the total amount of copper ions and stannous ions in the plating solution and the molar percentage of copper ions in the plating solution used in other electroplating stages different.

[0021] The total amount of copper ions and stannous ions in the plating solution described here refers to the total amount of copper ions and stannous ions contained in each plating solution used in each electroplating stage, rather than the total amount of copper ions and stannous ions in each plating solution. T...

Embodiment 1

[0041] This embodiment is used to illustrate the electroplating product provided by the present invention and its preparation method.

[0042] The stainless steel workpiece is immersed in a plating solution with a temperature of 55°C (the plating solution contains 0.007 mol / L copper pyrophosphate, 0.14 mol / L stannous pyrophosphate and 300 g / L potassium pyrophosphate, pH value is 7.4) as the cathode , with a tin metal plate as the anode. Turn on a direct current with a current density of 1 A / dm2. After 10 minutes of electroplating, stop electroplating, take out the stainless steel workpiece and wash it with water until no acid ions are detected, and then dry it at 80°C. The copper-tin alloy coating has a thickness of 2 microns and a copper content of 53% by weight.

[0043] Then, the above-mentioned oven-dried stainless steel workpiece that has been plated with a layer of copper-tin alloy coating is immersed in a plating solution with a temperature of 40° C. (the plating solut...

Embodiment 2

[0054] This example illustrates the electroplated product provided by the present invention and the method for its preparation.

[0055] Immerse the stainless steel workpiece in a plating solution with a temperature of 55°C (the plating solution contains 0.007 mol / L copper pyrophosphate, 0.14 mol / L stannous pyrophosphate, 300 g / L potassium pyrophosphate, 50 g / L methanesulfonic acid and 5 g / L ethylenediamine, pH 7.4) as the cathode and a tin metal plate as the anode. Turn on a direct current with a current density of 1 A / dm2. After 10 minutes of electroplating, stop electroplating, take out the stainless steel workpiece and wash it with water until no acid ions are detected, and then dry it at 80°C. The copper-tin alloy coating has a thickness of 2 microns and a copper content of 53% by weight.

[0056] Then, the stainless steel workpiece that has been plated with a layer of copper-tin alloy coating is then immersed in a plating solution with a temperature of 55° C. (the plati...

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Abstract

The invention relates to an electric plating product, which comprises parent material and copper-tin alloy composite coatings on the surface of the parent material, therein, the copper-tin alloy composite coatings adopts multilayer, the copper content of at least one layer of the copper-tin alloy composite coatings is different from the copper content of the other copper-tin alloy composite coatings. The invention also provides the preparation method of the electric plating product. The electric plating product comprises the multilayer copper-tin alloy composite coatings, at least one layer of the copper-tin alloy composite coatings is different from the copper content of the other copper-tin alloy composite coatings, thereby, the electric plating product simultaneously has higher vibration abrasion resistance and corrosion resistance, and the good combination property is realized.

Description

technical field [0001] The invention relates to an electroplating product and a preparation method thereof. Background technique [0002] The metal or non-metal processed parts after electroplating not only have beautiful appearance, but also the coating can play a role of decoration and protection for the base material. Metal nickel is used in the traditional electroplating process, so the obtained electroplating products include nickel plating. Nickel plating is widely used due to its good decoration, protection and wear resistance. Later, it was found that the contact between metal nickel and human skin can cause nickel sensitivity symptoms. Therefore, many countries, such as the European Community countries, have legislated to limit the nickel content in jewelry, requiring that the precipitation of metal nickel should not exceed one per square centimeter per week. More than 0.5 micrograms. Therefore, the study of nickel-free and nickel-substituting electroplating proc...

Claims

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Application Information

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IPC IPC(8): C25D5/10
Inventor 刘芳陈梁宫清
Owner BYD CO LTD
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