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Method and process of steel structure arc spraying composite corrosion proof coating system

An arc spraying and steel structure technology, which is applied in the coating process of metal materials, the device for coating liquid on the surface, the coating and other directions, can solve the problems of insufficient weather resistance, lack of surface decoration, and insufficient anti-corrosion years. To achieve the effect of excellent decoration, long anti-corrosion years, and reduction of anti-corrosion maintenance work and costs

Active Publication Date: 2011-07-27
JIANGSU CUMT DAZHENG SURFACE ENG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] With the continuous significant progress in the research of arc spraying technology and equipment, people began to use arc spraying technology for anti-corrosion treatment of steel. Insufficient, such as the anti-corrosion period is still not high enough, the weather resistance is still not strong enough, the surface decoration is lacking, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Example 1: A certain steel structure test piece first adopts the method of sandblasting and derusting to remove the rust products on the surface of the steel structure. The surface cleanliness of the treated steel substrate is Sa3 level, and the surface roughness is Rz25-100 μm, and then two An aluminum wire with a diameter of 3.0mm, the aluminum content in the aluminum wire is 99.5%, and the aluminum coating is arc sprayed on the surface of the steel structure, and the thickness of the metal aluminum coating is 180 μm; then remove the dust and large particles on the surface of the metal sprayed coating, after 12 Apply two coats of nano-modified epoxy sealer coating within 1 hour as the primer coat, and the dry film thickness of the coat is 40 μm; The cloud iron coating is used as an intermediate paint coating, and the dry film thickness of the coating is 100 μm; after the intermediate paint coating is naturally dried at room temperature for 24 hours and the paint film i...

Embodiment 2

[0029] Example 2: For a steel structure test piece, first adopt the method of sandblasting and derusting to remove the rust products on the surface of the steel structure. The surface cleanliness of the treated steel base material is Sa3 level, and the surface roughness is Rz25-100 μm, and then use a An aluminum wire with a diameter of 3.0mm, the aluminum content in the aluminum wire is 99.5% and a zinc wire with a diameter of 3.0mm, the zinc content in the zinc wire is 99.99%, and the zinc-aluminum pseudo-alloy coating is arc sprayed on the surface of the steel structure, The thickness of the metal sprayed coating is 250 μm; then remove the dust and large particles on the surface of the metal sprayed coating, and apply a nano-modified epoxy sealing coating as a primer coating within 12 hours, and the dry film thickness of the coating is 10 μm; 24 hours after the paint coating is applied, apply a layer of nano-modified epoxy mica iron coating as an intermediate paint coating, a...

Embodiment 3

[0031]Example 3: For a steel structure test piece, first adopt the method of sandblasting and derusting to remove the rust products on the surface of the steel structure. The surface cleanliness of the treated steel substrate is Sa3 level, and the surface roughness is Rz25-100 μm, and then two A zinc-aluminum alloy wire with a diameter of 2.0mm, the aluminum content in the zinc-aluminum alloy wire is 15%, and the rest is zinc, and the zinc-aluminum alloy coating is arc sprayed on the surface of the steel structure, and the thickness of the metal sprayed layer is 120 μm; then remove the metal sprayed layer For dust and large particles on the surface, apply two coats of nano-epoxy sealer coating as a primer coat within 12 hours, with a dry film thickness of 40 μm; Nano-modified epoxy micaceous iron coating is used as the intermediate paint coating, and the dry film thickness of the coating is 60 μm; after the intermediate paint coating is dried at room temperature for 24 hours an...

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Abstract

The invention provides a method and a process for spraying a composite anticorrosive coating system by electric arc for a steel structure, which belong to the method and the process for anticorrosion of the steel structure. In the anticorrosive coating system, first, rust removal and coarsing are carried out on the surface of the steel structure; then, an anode metal coating is sprayed by electric arc; then, a nanometer modified epoxy seal paint as a primer coating, an MIO epoxy paint or nanometer modified MIO epoxy paint as an intermediate paint coating, and a nanometer modified fluorine-containing polyurethane paint or fluorine-containing polysiloxane paint or siloxane modified acrylic polyurethane as a finishing coating are coated on the metal coating in sequence. The composite anticorrosive coating system has excellent performances of corrosion resistance, weather resistance, stain resistance, chemical product resistance, decoration and the like, and can obviously reduce or remit anticorrosive maintenance work and cost of the steel structure in late stage.

Description

technical field [0001] The invention relates to a steel structure anti-corrosion coating system, in particular to a method and process for steel structure arc spraying composite anti-corrosion coating system. Background technique [0002] At present, the main anti-corrosion method for steel structures at home and abroad is the heavy anti-corrosion coating system, which is a triple-coat heavy-duty coating system composed of inorganic or epoxy zinc-rich primer, epoxy intermediate paint and polyurethane topcoat. Anti-corrosion system. With the increasingly harsh corrosive environment, the damage of ultraviolet rays and corrosive media to the composite coating will cause the breakage of the hydrocarbon molecular chain in the organic component, so that the aging failure of the coating will crack and pulverize, making this coating The protection life of the layer system to steel is very limited, and the protection period of each construction is only 3 to 8 years, and it still nee...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C4/06C23F13/00B32B15/04B05D7/24C23F15/00B32B15/18B32B33/00C23C4/131
Inventor 安云岐易春龙康壮苏洪伟
Owner JIANGSU CUMT DAZHENG SURFACE ENG TECH
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