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Electrophoresis process method for preventing salt mist of magnesium alloy LED display screen box body

A technology of LED display screen and process method, applied in electrophoretic plating, electrolytic coating, anodizing and other directions, can solve the problems of reducing service life, destroying reliability and safety, etc., to reduce production cost, improve surface hydrophobic performance, The effect of good weather resistance

Inactive Publication Date: 2020-04-28
鹤壁维达科巽电气有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, technical equipment and products used in tropical and subtropical coastal areas are severely damaged by sea fog corrosion, which will also destroy the reliability and safety of work, and greatly reduce the service life

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1: An electrophoresis process method for preventing salt spray from a magnesium alloy LED display box, and its specific micro-arc oxidation electrophoresis process method is as follows:

[0027] Step 1 of the process method: receiving and inspecting the semi-finished products transferred from the previous process, inspection category: full inspection;

[0028] ①Visual inspection of the surface quality of the box body, scratches, bumps, cracks, die-casting flow marks, sand holes, depressions, and lack of materials are not allowed. Check with a magnifying glass if necessary.

[0029] ② Check whether the sharp edges and burrs are removed completely, and no magnesium shavings are allowed to remain in the holes.

[0030] Step 2 of the process method: ① Put the magnesium alloy die-casting parts whose surface has been degreased into a glacial acetic acid pickling solution tank for soaking. Working temperature 15~80℃, soaking time 30~40s;

[0031] ② After taking o...

Embodiment 2

[0047] Embodiment 2: The process step 2 of the electrophoresis process method for the magnesium alloy LED display box to prevent salt spray: 1. The formula of the glacial acetic acid pickling solution is as follows by volume percentage:

[0048] Glacial acetic acid C 2 h 4 o 2 (purity; industrial grade) 50 ~ 80g / L tap water preparation;

[0049] ② The formula of alkaline cleaning solution is as follows:

[0050] Sodium hydroxide (purity: industrial grade) 10 ~ 100g / L tap water preparation.

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Abstract

The invention discloses an electrophoresis process method for preventing salt mist of a magnesium alloy LED display screen box body. The specific micro-arc oxidation electrophoresis process method includes the steps that firstly, a magnesium alloy die casting with the oil-dirt-removed surface is put in a glacial acetic acid acid pickling solution tank to be soaked and then put in an alkaline washing solution tank to be subjected to neutralizing treatment, soaking and washing, then after being subjected to micro-arc oxidation electrophoresis, the magnesium alloy die casting is subjected to onehundred percent inspection finally, and the magnesium alloy die casting is packaged and boxed after the assay is approved. As the novel electrophoresis process method is adopted, a prepared protectingand cooling functional coating has good weather fastness, good cooling performance, salt mist prevention and high abrasion resistance, the surface hydrophobicity of a base material can be greatly improved, the self-cleaning effect can be achieved in natural environments, the production cost is reduced, and the product quality is improved.

Description

technical field [0001] The invention belongs to the technical field of new material manufacturing, and in particular relates to an electrophoresis process method for preventing salt spray from a magnesium alloy LED display box. Background technique [0002] Magnesium alloy electronic radiators and magnesium alloy electronic products are more severely corroded by salt spray than other metals. When magnesium alloys are in contact with other metals, salt spray water acts as a strong electrolyte, causing electrochemical corrosion between magnesium alloys and other metals, and The larger the potential difference, the faster the corrosion. According to data reports, when the relative humidity exceeds 65%, any object surface is attached with a water film of 0.001~0.01 micron. And the NaCl and MgCl in the salt spray 2 The notable feature of water is that it can absorb a large amount of moisture from a relatively dry atmosphere. Especially under the conditions of high temperature ...

Claims

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Application Information

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IPC IPC(8): C25D13/12C25D11/30
CPCC25D13/12C25D11/30
Inventor 钱林张少利杨跃明
Owner 鹤壁维达科巽电气有限公司
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