Spraying method for anti-acidic-corrosion coating for mechanical component

A mechanical parts, acid-proof technology, applied in the direction of anti-corrosion coatings, polyester coatings, coatings, etc., can solve the problems of mechanical surface exposure to the external environment, unqualified sprayed paint surface quality, unsatisfactory spraying effect, etc., to achieve operation Convenience, high acid resistance and toughness, simple process effect

Inactive Publication Date: 2018-05-15
成都龙泉马龙机械厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims at the fact that the products processed by the existing metal etching process often have unsatisfactory spraying effects, or there are unqualified parts on the sprayed paint surface, and the protective coating is corroded by the acidic environment, which causes the mechanical surface to be exposed to the external environment and reduces its use. To solve the problem of service life, provide a method of spraying anti-acid corrosion paint for mechanical parts

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A method for spraying acid corrosion-resistant coatings for mechanical parts, comprising the following steps:

[0027] The first step is to clean and dry the surface of the mechanical parts, and treat the surface of the mechanical parts with a brush and oil cleaning agent;

[0028] The second step is to sandblast the mechanical parts after drying;

[0029] The third step is to spray the primer. After the primer is stirred evenly, it is evenly sprayed on the surface of the mechanical parts through a spray gun;

[0030] The fourth step is to polish the primer surface;

[0031] The fifth step is to spray an anti-acid corrosion topcoat on the surface of the primer after grinding.

Embodiment 2

[0033] A method for spraying acid corrosion-resistant coatings for mechanical parts, comprising the following steps:

[0034] The first step is to clean and dry the surface of the mechanical parts, and treat the surface of the mechanical parts with a brush and oil cleaning agent;

[0035] The second step is to perform sandblasting on the mechanical parts after drying, and add the sandblasting material that is evenly wetted by the grinding material particles into the sandblasting material storage tank of the sandblasting device, and spray it on the mechanical parts through compressed air;

[0036] The third step is to spray the primer. After the primer is stirred evenly, it is evenly sprayed on the surface of the mechanical parts through a spray gun;

[0037] The fourth step is to polish the primer surface;

[0038] The fifth step is to spray an anti-acid corrosion topcoat on the surface of the primer after grinding. Example 3

Embodiment 3

[0039] A method for spraying acid corrosion-resistant coatings for mechanical parts, comprising the following steps:

[0040] The first step is to clean and dry the surface of the mechanical parts, and treat the surface of the mechanical parts with a brush and oil cleaning agent;

[0041] The second step is to perform sandblasting on the mechanical parts after drying, and add the sandblasting material that is evenly wetted by the grinding material particles into the sandblasting material storage tank of the sandblasting device, and spray it on the mechanical parts through compressed air;

[0042] The third step is to spray the primer. After the primer is stirred evenly, it is evenly sprayed on the surface of the mechanical parts by a spray gun. In parts by weight, the primer includes 35 parts of water-based alkyd resin, 14 parts of amino resin, 16 parts of film-forming resin, 6 parts of calcium lignosulfonate, 5 parts of water retaining agent, 5 parts of silicone water repelle...

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PUM

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Abstract

The invention relates to the field of machining protecting spraying agents and discloses a spraying method for anti-acidic-corrosion coating for a mechanical component. According to the key points ofthe spraying method, the surface of the mechanical component is cleaned firstly and dried, and the mechanical component is subjected to sand blasting treatment after drying; then undercoat is sprayed,the undercoat is evenly sprayed on the surface of the mechanical component through a spray gun after the undercoat is stirred evenly, and the undercoat surface is polished; and finally, anti-acidic-corrosion finishing coat is sprayed on the polished undercoat surface, wherein the undercoat is waterborne alkyd resin, amino resin, film-forming resin, calcium lignin sulfonate, a water-retaining agent, an organic silicon water repellent and deionized water. The problem that as for a product machined through an existing metal etching technique, usually, the spraying effect is not ideal, or the unqualified position exists in the coating sprayed face, protecting coating suffers from acidic corrosion, thus the mechanical surface is exposed in the exterior environment, and thus the service life ofthe product is shortened are solved.

Description

technical field [0001] The invention relates to the field of protective coatings for mechanical processing, in particular to a method for spraying anti-acid corrosion coatings for mechanical parts. Background technique [0002] In the existing mechanical processing, when the finished product is completed, it is necessary to coat the exterior with paint. The main purpose of this paint is to isolate the humid environment from the metal surface of the machine and reduce the risk of corrosion on the machine surface. However, in actual use, conventional paint can only be used Isolate the general humid environment. As carbon dioxide emissions exceed the standard, there is a certain amount of acid rain in all major, medium and small cities. Although conventional coatings can isolate the humid environment, as the droplets adsorbed on the surface of the machine dry, the concentration of the acidic liquid increases. The surface of the paint is corroded, causing the mechanical surface ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D7/00B05D1/38B05D5/00C09D167/08C09D161/20C09D5/00C09D4/06C09D5/08
CPCB05D7/54B05D1/38B05D5/00C08L2205/035C09D4/06C09D5/002C09D5/08C09D167/08C08L61/20C08L97/005C08K5/54
Inventor 李成
Owner 成都龙泉马龙机械厂
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