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Method for composite phosphatization on metallic material surface

A metal material and metal technology, applied in the direction of metal material coating process, etc., can solve the problems of short salt spray test time, easy rust, poor metal surface adhesion, easy bump damage, etc., to achieve good anti-rust effect and adhesion. Excellent, simple process effect

Inactive Publication Date: 2008-11-05
李世奇
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although galvanized, phosphating, blued, and oiled protective layers have good adhesion to the metal surface, their rust resistance is poor, and the salt spray test time is short and easy to rust; Although electrophoresis, dacromet and other treatment processes have good anti-rust effects, they have poor adhesion to the metal surface and are prone to bump damage

Method used

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Experimental program
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Embodiment Construction

[0010] The specific implementation is introduced below through the embodiments:

[0011] 1. Cleaning: First, immerse the metal parts in the acid solution for cleaning, and the cleaning time is 15-45 minutes;

[0012] 2. Phosphating: Surface phosphating of cleaned metal parts, the thickness of phosphating layer is 0.002-0.005mm;

[0013] 3. Coating protective layer: parts after surface phosphating treatment are dip-coated with protective resin, with a thickness of 0.002-0.005mm;

[0014] 4. Drying: put the parts in a centrifugal dryer for 1-3 minutes;

[0015] 5. Drying: Dry at 30°-40°C for 10-30 minutes.

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Abstract

The invention relates to the field of chemical processing of material surfaces, in particular to a method for implementing composite phosphatization on the surface of metallic materials. The invention adopts the following technical proposal: firstly, common phosphatizing techniques are adopted for processing the surface of a metallic part, and a phosphatized layer of the metallic part is coated with a layer of protective resin, thus improving the corrosion resistance effect of the metallic part. Compared with currently popular techniques such as galvanization, phosphatization, color hardening and electrophoresis, etc., the method for implementing composite phosphatization on the surface of metallic materials has better corrosion resistance effect, strong adhesive attraction, is not easy to shed when being collided, and has moderate cost and simple technique. The method for implementing composite phosphatization on the surface of metallic materials is mainly used for the protective processing of metallic material surfaces.

Description

technical field [0001] The invention relates to the field of surface chemical treatment of materials, in particular to a method for compound phosphating on the surface of metal materials. technical background [0002] For a long time, the surface treatment of metal materials generally adopts galvanizing, phosphating, bluing, oiling, painting, spraying, electrophoresis, dacromet and other processes. Although galvanized, phosphating, blued, and oiled protective layers have good adhesion to the metal surface, their rust resistance is poor, and the salt spray test time is short and easy to rust; Although electrophoresis, Dacromet and other treatment processes have better anti-rust effects, they have poor adhesion to the metal surface and are prone to bump damage. At present, there is an urgent need for a surface protection process that has good anti-rust ability and strong adhesion to the metal surface. Contents of the invention [0003] The purpose of the present invention ...

Claims

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Application Information

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IPC IPC(8): C23C22/06C23C22/78C23C22/82
Inventor 李世奇
Owner 李世奇
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