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Metal surface silver plating method

A metal surface, silver-plating technology, applied in the direction of metal material coating process, liquid chemical plating, coating, etc., can solve the problems of scratches and damage of the outer surface coating, high cost of repair methods, complex formula ingredients, etc., to achieve repair The effect of short time, low cost and high pass rate

Inactive Publication Date: 2020-01-10
BEIJING SHUGUANG AERO ELECTRICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, during the installation process of some silver-plated parts, it is found that the coating on the outer surface is scratched and damaged, and local repairs are required. However, the current formulation of the partial damage repair solution for the silver-plated film is complicated and inconvenient to prepare, and the repair method is costly and inefficient.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Shell material T2, after the overall first silver plating process, the silver-plated film on the surface of the inner cavity is removed by machine addition (forming a non-silver-plated part), and the non-film part is chemically silver-plated.

[0029] The solute of repairing liquid is silver nitrate, urea and fluoride salt, and the solvent of described repairing liquid is water; The mass of silver nitrate and the volume ratio of water are 65:1, and the unit is gram / liter; The quality of urea and water The volume ratio of sodium fluoride is 4:1, and the unit is g / L; the volume ratio of the mass of sodium fluoride to water is 0.1:1, and the unit is g / L.

[0030] The time for the non-silvered part to react with the restoration solution is 40 seconds.

[0031] The contact of the non-silvered part with the restoration solution is carried out by coating.

[0032] The heating temperature for the non-silver-plated part to react with the restoration solution is 30°C, and the re...

Embodiment 2

[0035] For end cap material T2, after the overall first silver plating process, the silver-plated film on the surface of the inner cavity is removed by machine addition (forming a non-silver-plated part), and the non-film part is chemically silver-plated.

[0036] The solute of repair liquid is silver nitrate, urea and fluoride salt, and the solvent of described repair liquid is water; The mass of silver nitrate and the volume ratio of water are 70:1, and the unit is gram / liter; The quality of urea and water The volume ratio of sodium fluoride is 5:1, and the unit is g / L; the volume ratio of the mass of sodium fluoride to water is 0.15:1, and the unit is g / L.

[0037] The time for the non-silvered part to react with the restoration solution is 35 seconds.

[0038] The contact of the non-silvered part with the restoration solution is carried out by coating.

[0039] The heating temperature for the non-silver-plated part to react with the restoration solution is 35° C., and the...

Embodiment 3

[0042] Shell material T2, after the overall first silver plating process, remove the silver-plated film on the surface of the mouth of the inner cavity by machine addition (forming a non-silver-plated part), and chemically silver-plate the non-film part.

[0043] The solute of repairing liquid is silver nitrate, urea and fluoride salt, and the solvent of described repairing liquid is water; The mass of silver nitrate and the volume ratio of water are 75:1, and the unit is gram / liter; The quality of urea and water The volume ratio of sodium fluoride is 6:1, and the unit is g / L; the volume ratio of the mass of sodium fluoride to water is 0.2:1, and the unit is g / L.

[0044] The time for the non-silver-plated part to react with the restoration solution is 30 seconds.

[0045] The contact of the non-silvered part with the restoration solution is carried out by coating.

[0046] The heating temperature for the non-silver-plated part to react with the restoration solution is 40°C, ...

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PUM

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Abstract

The invention relates to a metal surface silver plating method. According to the method, a non-silver-plated portion is in contact with repair liquid to make a chemical reaction. The heating temperature during the chemical reaction is 30 DEG C to 40 DEG C. After the non-silver-plated portion is reacted with the repair liquid, water washing and drying are carried out, wherein a solute of the repairliquid is silver nitrate, urea and fluoride salt, and a solvent of the repair liquid is water. The new method can achieve rapid silver plating, a film is uniform, bright and smooth, and the good conductivity is achieved.

Description

technical field [0001] The invention relates to the technical field of metal surface treatment, in particular to a silver plating method on a metal surface, and more specifically to a repair method for a silver plating surface. Background technique [0002] At present, during the installation process of some silver-plated parts, it is found that the coating on the outer surface is scratched and damaged, and local repairs are required. However, the current formulation of the partial damage repair solution for the silver-plated film is complicated and inconvenient to prepare, and the repair method is costly and inefficient. Contents of the invention [0003] The purpose of the invention is to provide a silver plating repair solution and simplify the silver plating repair process. [0004] Technical scheme of the present invention is: [0005] Technical solution: provide a silver plating method on a metal surface, the silver plating method includes a first silver plating pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C18/44
CPCC23C18/1603C23C18/44
Inventor 李忠山石磊赵仲严
Owner BEIJING SHUGUANG AERO ELECTRICAL
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