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

An arc spraying and steel structure technology, applied in metal material coating process, device for coating liquid on the surface, coating, etc., can solve the problems of insufficient anti-corrosion age, insufficient weather resistance, and lack of surface decoration. , to achieve the effect of reducing anti-corrosion maintenance work and costs, excellent decoration, and long anti-corrosion years

Active Publication Date: 2009-06-10
JIANGSU CUMT DAZHENG SURFACE ENG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

In this patented technology, there were developed two types of antirust paints that could be applied on steel surfaces without causing any harm during construction processes. One was made up of aluminum flakes mixed with epoxy resin binder while another one consisted mainly of nanoparticles modified into hydrophobicity. Both these materials improved their durability against sea water and atmospheric pollution compared to traditional methods like electroplated nickel plates. They have been shown effective at preventing rust formation even after being exposed over many months' service life. Additionally, they provide enhanced physical separation between different layers when painted onto steel, resulting in longer lifespan under harsh environments such as marine coastline areas. Overall, both technical effectives include providing long lasting and efficient solutions towards creation of strong yet resistant environmentalally friendly products suitable for architectural purposes.

Problems solved by technology

This patented technical problem addressed in this patents relates to improving the durability and lifespan of protective layers applied over steels due to environmental factors like saltwater environments caused by sea water intrusion during transportations from coastline areas through long distances without having any cracks formed under these conditions.

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

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Claims

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Application Information

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Owner JIANGSU CUMT DAZHENG SURFACE ENG TECH
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