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Metal thermal spraying and powder coating electrostatic spraying composite coat antiseptic technique

A technology of powder coating and electrostatic spraying, which is applied in the direction of metal material coating process, coating, liquid spraying equipment, etc., can solve the problem that the anti-corrosion life is difficult to meet the requirements, etc., achieve the effect of thin corrosion resistance and prolong the anti-corrosion life

Inactive Publication Date: 2008-02-13
王家德
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using phosphating and plastic spraying process to manufacture products, the anti-corrosion life is difficult to meet the requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Steel workpieces are pretreated for degreasing and drying, that is, scrubbing the steel workpieces with organic solvents such as xylene, and then performing surface sandblasting after natural drying for 30 minutes. Use a dry sandblasting machine, and the air flow rate of each high-pressure sandblasting gun is 8m 3 / min, the air pressure is 6-7kg / cm 2 , and the blasting angle is 30°-40°, and the distance is 20-30cm. Roughness reaches Ry40-60μm. Arc spray zinc layer within 4 hours, the compressed air used for spraying should be clean and dry, the pressure should not be less than 0.4MPa, the spraying distance is 100-200mm, the spray gun should be at right angles to the surface of the steel workpiece as far as possible, at least not less than 45°, the spray gun should move The speed should be 40-80μm for one spraying thickness. There should be 1 / 3 width overlap between each spraying zone, and the thickness should be as uniform as possible. After reaching 40μm, electrostat...

Embodiment 2

[0019] After the steel workpiece is degreased and dried, the steel workpiece is scrubbed with an organic solvent such as xylene, and the surface is sandblasted after natural drying for 30 minutes. Use a dry sandblasting machine, and the air flow rate of each high-pressure sandblasting gun is 8m 3 / min, the air pressure is 6-7kg / cm 2 , and the blasting angle is 30°-40°, and the distance is 20-30cm. Roughness reaches Ry40-60μm. The rare earth aluminum layer should be sprayed with oxyacetylene flame within 4 hours. The spraying distance should be 100-200mm. There should be 1 / 3 width overlap between the spraying belts, and the thickness should be as uniform as possible. The spray guns between the spraying layers should be perpendicular to each other and cover each other until the thickness of the metal layer reaches 120μm, and then carry out electrostatic spraying of polyester resin powder coating. Relying on electrostatic spraying of polyester resin powder onto the surface of t...

Embodiment 3

[0021] After the steel workpiece is degreased and dried, the steel workpiece is scrubbed with an organic solvent such as xylene, and the surface is sandblasted after natural drying for 30 minutes. Use a dry sandblasting machine, and the air flow rate of each high-pressure sandblasting gun is 8m 3 / min, the air pressure is 6-7kg / cm 2 , and the blasting angle is 30°-40°, and the distance is 20-30cm. Roughness reaches Ry 40-60μm. Oxygen acetylene flame spraying stainless steel layer within 4 hours, the spraying distance is 100-200mm, the spray gun should be at right angles to the surface of the steel workpiece as far as possible, at least not less than 45°, the moving speed of the spray gun should reach 40-80μm in one spraying thickness, each spraying There should be 1 / 3 of the width overlap between the belts, and the thickness should be as uniform as possible. The spray guns between the sprayed layers should be perpendicular to each other and cover each other until the thicknes...

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PUM

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Abstract

The invention discloses a metal thermal spraying and powder coating electrostatic spraying composite coating anti-corrosion technology, which includes the following procedures: after a steel and iron work piece is deoiled, dried and pre-treated, the surface sand spraying treatment is conducted, with the rough degree of up to Ry40 to 100Mu m; the metal thermal spraying is conducted within 4 hours; after the thickness of a metal layer reaches 40 to 120Mu m, the powder coating electrostatic spraying is conducted, to make the thickness of a powder layer reach 60 to 120Mu m; and then the material is sent into a drying box for heating and solidification, so that the total thickness of the composite coating reaches 100 to 240Mu m. The composite coating treated by the technology has less thickness and stronger anti-corrosion than those of common coating, and is characterized by water resistance, impact resistance, weather resistance, long-lasting protection, long anti-corrosive service life, smooth appearance, environmental protection, cleanness, etc.

Description

technical field [0001] The invention relates to an anticorrosion process for a composite coating of metal thermal spraying and powder coating electrostatic spraying. Background technique [0002] At present, metal corrosion is a common problem in the use of steel structures, especially for steel structural parts with high anti-corrosion requirements indoors and outdoors. Due to their relatively high requirements for appearance and environmental protection, the current methods cannot meet the requirements. Using the current process of thermal spraying and spraying paint to manufacture products, it is difficult to meet the requirements in terms of appearance and environmental protection. Using phosphating and plastic spraying process to manufacture products, the anti-corrosion life is difficult to meet the requirements. Contents of the invention [0003] In order to solve the above problems, the object of the present invention is to provide a composite coating anticorrosion...

Claims

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Application Information

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IPC IPC(8): C23C28/00C23C4/08B05B5/08C23C4/12C23C4/06C23C4/129C23C4/131
Inventor 王家德徐威力
Owner 王家德
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