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Surface treatment process for metal product

A metal product and surface treatment technology, which is applied to the device and coating of the surface coating liquid, can solve the problems of insufficient mechanical hardness and corrosion resistance, large environmental pollution, complicated sewage treatment, etc., and achieve good surface and brightness Good, the effect of process cost reduction

Inactive Publication Date: 2017-09-26
HEFEI HUIZHI NEW MACHINERY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The mechanical hardness and anti-corrosion performance of metal products with electro-galvanized layer are not enough, and although the decorative chromium has relatively strong mechanical hardness and anti-corrosion performance, the pollution to the environment is relatively large in the decorative chromium process, and the sewage contains chromic anhydride and sodium cyanide and other components, the treatment of sewage is also more complicated

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 1. Scrub the surface of the metal product with cotton yarn dipped in an organic solvent, or immerse the metal product in a tank filled with an organic solvent for 20 minutes, and remove the oil on the surface of the metal product by dipping;

[0026] 2. Use high-pressure water to spray onto the surface of the metal product treated in step 1, and clean it for 10 minutes;

[0027] 3. Etching the metal products after the treatment in step 2 with acid solution, and carrying out high-pressure water washing after the etching treatment;

[0028] 4. Carry out electro-galvanizing treatment on the surface of the metal product after the treatment in step 3. After the electro-galvanizing treatment, electrolytic passivation is carried out on the electro-galvanizing, and then high-pressure water washing is carried out after completion;

[0029] 5. Paint the surface of the metal product treated in step 4, and dry it in an environment of 80°C for 100 minutes.

[0030] The organic solv...

Embodiment 2

[0038] 1. Scrub the surface of the metal product with cotton yarn dipped in an organic solvent, or immerse the metal product in a tank filled with an organic solvent for 20 minutes, and remove the oil on the surface of the metal product by dipping;

[0039] 2. Use high-pressure water to spray onto the surface of the metal product treated in step 1, and clean it for 5 minutes;

[0040] 3. Etching the metal products after the treatment in step 2 with acid solution, and carrying out high-pressure water washing after the etching treatment;

[0041] 4. Carry out electro-galvanizing treatment on the surface of the metal product after the treatment in step 3. After the electro-galvanizing treatment, electrolytic passivation is carried out on the electro-galvanizing, and then high-pressure water washing is carried out after completion;

[0042] 5. Paint the surface of the metal product treated in step 4, and dry it in an environment of 80°C for 80 minutes.

[0043] The organic solven...

Embodiment 3

[0051] 1. Scrub the surface of the metal product with cotton yarn dipped in an organic solvent, or immerse the metal product in a tank filled with an organic solvent for 30 minutes, and remove the oil on the surface of the metal product by dipping;

[0052] 2. Use high-pressure water to spray onto the surface of the metal product treated in step 1, and clean it for 10 minutes;

[0053] 3. Etching the metal products after the treatment in step 2 with acid solution, and carrying out high-pressure water washing after the etching treatment;

[0054] 4. Carry out electro-galvanizing treatment on the surface of the metal product after the treatment in step 3. After the electro-galvanizing treatment, electrolytic passivation is carried out on the electro-galvanizing, and then high-pressure water washing is carried out after completion;

[0055] 5. Paint the surface of the metal product treated in step 4, and dry it in an environment of 100°C for 100 minutes.

[0056] The organic sol...

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Abstract

A surface treatment process for metal products, comprising the following treatment steps: 1. Scrub the surface of the metal product with cotton gauze dipped in an organic solvent, or immerse the metal product in a tank filled with an organic solvent, and remove the surface of the metal product by immersion. Oil pollution; 2. Use high-pressure water to spray the surface of the metal product after step 1 for cleaning; 3. Etch the metal product after step 2 with acid solution, and perform high-pressure water washing after the etching treatment; 4. Step 3 The surface of the treated metal product is electro-galvanized, and after the electro-galvanizing treatment, the electrolytic passivation is carried out on the electro-galvanized, and then high-pressure water washing is carried out after completion; 5. Paint and dry the surface of the metal product after the treatment in step 4. The surface brightness of the metal product obtained by the treatment process of the present invention is good, less pollution is generated during the production process, energy saving and environmental protection, and the production cost is greatly reduced compared with the process cost of the prior art.

Description

technical field [0001] The invention belongs to the technical field of surface treatment of metal products, and in particular relates to a surface treatment process of metal products. Background technique [0002] There are many metal products commonly used in life, such as pull baskets, chair legs, motorcycle racks and so on. Various metal products commonly used in the prior art are made of iron or steel, and their surfaces are all electroplated with a zinc layer or a decorative chromium layer. The mechanical hardness and anti-corrosion performance of metal products with electro-galvanized layer are not enough, and although the decorative chromium has relatively strong mechanical hardness and anti-corrosion performance, the pollution to the environment is relatively large in the decorative chromium process, and the sewage contains chromic anhydride and sodium cyanide And other components, the treatment of sewage is also more complicated. [0003] When metal products are i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D5/34C25D3/22C25D5/48B05D7/14
CPCC25D5/34B05D7/14C25D3/22C25D5/48
Inventor 解正来
Owner HEFEI HUIZHI NEW MACHINERY TECH CO LTD
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