Magnesium plating method for metal surface

A metal surface, magnesium plating technology, applied in the direction of metal material coating process, liquid chemical plating, coating, etc., can solve the problems of complex formula components, scratches and damages of the coating, inconvenient modulation, etc., and achieve the best repair effect, Good conductivity and uniform film effect

Inactive Publication Date: 2020-03-17
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 magnesium-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 local damage repair solution for magnesium-coated films is complex 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] The outer circle is a ф350 shell, made of magnesium alloy. After magnesium plating, the surface of the inner cavity wall is removed by machine method, and chemically coated with magnesium

[0029] The solutes of the repair solution are magnesium sulfate, thiourea, and sodium chloride, and the solvent of the repair solution is water; the volume ratio of the mass of magnesium sulfate to water is 35:1, and the unit is g / L; the mass of thiourea is related to water The volume ratio of sodium chloride is 40:1, and the unit is g / L; the mass ratio of sodium chloride to the volume of water is 6:1, and the unit is g / L.

[0030] Further, the time for the non-magnesium plating part to react with the repair solution is 40 seconds.

[0031] Further, the contact of the non-magnesium-plated part with the repair solution is implemented by coating.

[0032] Further, the heating temperature for the reaction between the magnesium-free part and the repair solution is 30° C., and the reaction time ...

Embodiment 2

[0034] The outer circle is the end cover of ф389, and the material is magnesium alloy. After magnesium plating, the surface of the outer stop is machined to remove the film, and chemically coated with magnesium

[0035] The solutes of the repair solution are magnesium sulfate, thiourea, and sodium chloride, and the solvent of the repair solution is water; the volume ratio of the mass of magnesium sulfate to water is 40:1, and the unit is g / L; the mass of thiourea and water The volume ratio is 50:1, and the unit is g / liter; the mass ratio of sodium chloride to the volume of water is 2:1, and the unit is g / liter.

[0036] Further, the time for the non-magnesium-plated part to react with the repair solution is 30 seconds.

[0037] Further, the contact of the non-magnesium-plated part with the repair solution is implemented by coating.

[0038] Further, the heating temperature for the reaction between the magnesium-free part and the repair solution is 40° C., and the reaction time is 30 ...

Embodiment 3

[0040] The outer circle is ф786 shell, made of magnesium alloy. After magnesium plating, the surface of the inner stop is machined to remove the film, and chemically coated with magnesium

[0041] The solutes of the repair solution are magnesium sulfate, thiourea, and sodium chloride, and the solvent of the repair solution is water; the volume ratio of the mass of magnesium sulfate to water is 38:1, and the unit is g / L; the mass of thiourea and water The volume ratio is 45:1, the unit is g / L; the mass ratio of sodium chloride to the volume of water is 4:1, the unit is g / L.

[0042] Further, the time for the non-magnesium plating part to react with the repair solution is 35 seconds.

[0043] Further, the contact of the non-magnesium-plated part with the repair solution is implemented by coating.

[0044] Further, the heating temperature for the reaction between the magnesium-free part and the repair solution is 36° C., and the reaction time is 35 seconds.

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PUM

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Abstract

The invention relates to a magnesium plating method for a metal surface. The magnesium plating method comprises a first magnesium plating process and a second magnesium plating process, the first magnesium plating process is different from the second magnesium plating process; the first magnesium plating process enables that magnesium plating on part of the metal surface is carried out, the secondmagnesium plating process enables that magnesium plating on the metal surface without magnesium plating is carried out; in the second magnesium plating process, the non magnesium plating part contacts with repairing liquid, the chemical reaction is carried out, the heating temperature is 30 DEG C to 40 DEG C when the chemical reaction is carried out; after the non magnesium plating part reacts with the repairing liquid, water washing and drying are carried out; the solute of the repairing liquid is magnesium sulfate, thiourea and sodium chloride, the solvent of the repairing liquid is water;the volume ratio of the magnesium sulfate to the water is 35 to 40 : 1, the unit is gram / liter; the volume ratio of the thiourea to the water is 40 to 50:1, the unit is gram / liter; and the volume ratio of the sodium chloride to the water is 2 to 6:1, the unit is gram / liter. The magnesium plating method for a metal surface realizes a new method of rapid magnesium plating, and film forming id even,the light quantity is flat and the conductivity is good.

Description

Technical field [0001] The invention relates to the technical field of metal surface treatment, in particular to a method for magnesium plating of metal surfaces, and more specifically to a method for repairing and repairing magnesium plating surfaces. Background technique [0002] At present, during the installation process of some magnesium-plated parts, it is found that the outer surface coating is scratched and damaged and needs to be repaired locally. However, the composition of the current repair solution for local damage of the magnesium-plated film is complicated and it is difficult to prepare, and the repair method is costly and low in efficiency. Summary of the invention [0003] The purpose of the present invention is to provide a magnesium plating repair solution and simplify the magnesium plating repair process. [0004] The technical scheme of the present invention is: [0005] Technical Solution: Provide a magnesium plating method on a metal surface. The magnesium plat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C18/52
CPCC23C18/1603C23C18/52
Inventor 李忠山毛玉龙王慧仙
Owner BEIJING SHUGUANG AERO ELECTRICAL
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