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Method for preventing metal corrosion

An anti-corrosion and metal technology, applied in the field of metal anti-corrosion technology, can solve the problem of low salinization performance, and achieve the effects of high salinization performance, simple operation and prolonging service life

Inactive Publication Date: 2012-02-01
贺建军
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the method of galvanizing for anticorrosion will make the salinization performance of the product not high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The metal anti-corrosion method provided in this embodiment is specifically:

[0018] Pre-treatment: pickling, phosphating and washing the surface of the workpiece; pickling and derusting the surface of the workpiece with hydrochloric acid or sulfuric acid, then phosphating the surface of the workpiece, and then cleaning the surface of the workpiece with water;

[0019] Pre-baking: Pre-baking the workpiece at a temperature of 320°C, the pre-baking time is 2-15 minutes; the pre-baking time can be determined according to the size and shape of the workpiece;

[0020] Plastic dipping: apply dipping powder on the surface of the workpiece that needs to be dipped in plastic, and after dipping for a predetermined time, shake the workpiece to remove the remaining powder; during dipping, the heated metal sticks to the surrounding dipping powder, The higher the metal temperature, the longer the dipping time, and the thicker the resulting dipping layer, so set the dipping time acco...

Embodiment 2

[0025] The metal anti-corrosion method described in Example 1, the difference between this example and Example 1 is that the workpiece is pre-baked at 370°C, the pre-baking time is preferably 15 minutes, and it is cured at 180°C , The curing time is preferably 10 minutes.

Embodiment 3

[0027] The metal anticorrosion method described in Example 1, the difference between this example and Example 1 is that: the workpiece is prebaked at 350°C and cured at 160°C.

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PUM

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Abstract

The invention discloses a method for preventing metal corrosion. The method for preventing metal corrosion comprises the following steps of 1, a pretreatment step comprising carrying out pickling, phosphatization and washing of the surface of a workpiece, 2, a preliminary drying step comprising carrying out preliminary drying of the workpiece treated by the step 1 at a temperature of 320 to 370 DEG C for 2 to 15 minutes, 3, a dipping plasticizing step comprising coating dipping plastic powder on a surface of the workpiece treated by the step 2 for a preset time period, wherein the surface needs to be subjected to dipping plasticizing treatment, and shocking the workpiece to remove the dipping plastic powder, and 4, a curing step comprising carrying out curing of the workpiece treated by the step 3 at a temperature of 180 to 200 DEG C for 2 to 15 minutes. The method for preventing metal corrosion has the advantages of simple operation processes and low costs. A produce prepared by the method has the advantages of high corrosion resistance and good salinization performances.

Description

technical field [0001] The invention relates to a metal anticorrosion process. Background technique [0002] In recent years, with the development of industry, environmental pollution has been increasing, and the corrosion of steel materials has become more and more serious, so the protection of materials has gradually received attention. According to statistics, the amount of metal materials scrapped due to corrosion in the world is about 1 / 2 of the annual output of metals. Even if 2 / 3 of the metal materials scrapped due to corrosion can be recycled, metals equivalent to 10% of the annual output are still lost every year. What's more, the value of corrosion loss cannot be calculated only by the quality of the lost metal, but should also include the energy consumed in smelting metal, so the manufacturing value of corroded and scrapped metal materials is often much higher than the value of the metal itself. Therefore, in order to save steel materials and ensure the normal op...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23F15/00
Inventor 贺建军
Owner 贺建军