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Electrophoresis process after galvanizing

A process and electrophoresis technology, applied in hot-dip plating process, metal material coating process, electrolytic coating, etc., can solve the problems that cannot meet the daily environment, achieve good micro-abrasion performance, improve film hardness, and high anti-corrosion performance Effect

Active Publication Date: 2020-09-01
NINGBO YADA METAL SURFACE TREATMENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But passing the requirements of the salt spray test is only the basis for the product to leave the factory, which is far from meeting the use in the daily environment

Method used

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  • Electrophoresis process after galvanizing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Pre-treatment: The alloy workpiece is degreased, hot water washed, rust removed, and cold washed in sequence. First, the alloy workpiece is tilted at 50°, and superheated steam is continuously sprayed upward from the bottom of the workpiece for 20 seconds, and then immersed in cold water at -1°C. Steam blowing and cold water immersion were performed 4 times, and then the alloy workpiece was soaked in an activator, wherein the activator included hydrogen fluoride 50g / L, fluoroboric acid 70g / L, perchloric acid 6g / L, sodium citrate 4g / L, polytetrafluoroethylene Vinyl fluoride particles 50g / L, undergo physical and chemical composite activation treatment;

[0029] Film production: galvanize the activated alloy workpiece to form a galvanized layer with a thickness of 5 μm, then phosphate at 80°C for 10 minutes to form a phosphating film, and then immerse it in 11% of the solid coating by mass percentage, liquid In the electrolytic solution with 89% solvent, add the compound p...

Embodiment 2

[0032] Pretreatment: The alloy workpiece is degreased, hot water washed, rust removed, and cold washed in sequence. First, the alloy workpiece is tilted at 40°, and superheated steam is continuously sprayed upward from the bottom of the workpiece for 10 seconds, then immersed in cold water at -2°C, and circulated. Steam blowing and cold water immersion were performed for 3 times, and then the alloy workpiece was soaked in an activator, wherein the activator included 25g / L hydrogen fluoride, 50g / L fluoroboric acid, 4g / L perchloric acid, 3g / L sodium citrate, polytetrafluoroethylene Vinyl fluoride particles 40g / L, undergo physical and chemical compound activation treatment;

[0033] Film production: galvanize the activated alloy workpiece to form a galvanized layer with a thickness of 5 μm, then phosphate at 80°C for 10 minutes to form a phosphating film, and then immerse it in 11% of the solid coating by mass percentage, liquid In the electrolytic solution with 89% solvent, add ...

Embodiment 3

[0036] Pre-treatment: The alloy workpiece is degreased, hot water washed, rust removed, and cold washed in sequence. First, the alloy workpiece is tilted 60°, and superheated steam is continuously sprayed upward from the bottom of the workpiece for 30 seconds, then immersed in cold water at 0°C, and the steam is circulated. Spraying and soaking in cold water for 5 times, and then soaking the alloy workpiece with activator, wherein the activator includes hydrogen fluoride 75g / L, fluoboric acid 90g / L, perchloric acid 8g / L, sodium citrate 5g / L, polytetrafluoroethylene Ethylene particles 60g / L, undergo physical and chemical compound activation treatment;

[0037] Film production: galvanize the activated alloy workpiece to form a galvanized layer with a thickness of 5 μm, then phosphate at 80°C for 10 minutes to form a phosphating film, and then immerse it in 11% of the solid coating by mass percentage, liquid In the electrolytic solution with 89% solvent, add the compound particle c...

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Abstract

The invention belongs to the technical field of metal surface processing, an particularly relates to an electrophoresis technology after galvanizing. The electrophoresis technology comprises the following steps that pre-processing is conducted, specifically, an alloy workpiece is sequentially subjected to oil removing, hot washing, rust removing and cold washing, and is subjected to physical activation and chemical activation; mold manufacturing is conducted, specifically, the alloy workpiece after activation is subjected to galvanization and phosphorization, and then is immersed in phosphorization to conduct anodic electrophoresis processing to obtain mold workpiece; and post-processing is conducted, specifically, the mold workpiece is subjected to clean water washing, cold washing and drying to obtain an alloy workpiece finished product. When an electrophoresis coating is formed at the alloy workpiece, the workpiece is cathode, and anodic dissolution does not occur, and therefore theworkpiece surface and a phosphating film can be protected from being damaged. The alloy workpiece surface is subjected to galvanization and phosphorization, and then the electrophoresis coating is applied, and therefore the metal can be protected. The paint is of high price and high quality, the anti-corrosion performance is high, the weather-proof performance is high, and the environmental protection performance is high.

Description

technical field [0001] The invention belongs to the technical field of metal surface treatment, and in particular relates to an electrophoresis process after galvanizing. Background technique [0002] The continuous development of science and technology has driven the continuous development of society and scientific research. From high-end aerospace and military industries to the basic necessities of the people, all of them reflect the progress of science and technology. The continuous innovation of transportation means has greatly shortened the distance between them. As the main means of transportation, the automobile's material composition and surface treatment process greatly affect the service life. [0003] With the development of the automobile industry, advanced automobile coating technology and equipment, especially car coating, have been rapidly applied in my country. At present, the level of coating equipment installed in my country has made great progress. With t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C2/06C23C2/02C23C22/07C25D15/00
CPCC23C2/02C23C2/06C23C22/07C25D15/00
Inventor 董阿能陈前山秦利军
Owner NINGBO YADA METAL SURFACE TREATMENT
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