Metal wear-resisting anti-corrosion coating and electric arc spraying technology thereof

Abstract

The invention discloses a metal wear-resisting anti-corrosion coating. According to the coating, a coating wire is sprayed to a base material surface in an electric arc spraying manner, the thickness of the coating ranges from 0.5 mm to 0.8 mm, after spraying of the coating wire on the base material surface is finished, the surface of the coating is coated with a layer of hole sealing agent, and the coating is formed by mixing the coating wire comprising, by mass percent, 20% to 35% of TiAl3, 10% to 20% of Cr3C2, 5% to 15% of WC, 5% to 10% of V, 5% to 15% of Mo, 2% to 8% of Nb, 10% to 20% of Al and the balance Fe. The invention further discloses an electric arc spraying technology. The technology comprises the steps that purifying and sand blasting roughening treatment are carried out firstly, the wear-resisting anti-corrosion coating is sprayed in an electric arc manner, and finally, after spraying is finished, methyl methacrylate and a curing agent are adopted for coating and hole sealing of the surface of the coating. According to the metal wear-resisting anti-corrosion coating, the combination strength of the coating and the base material reaches more than 45 MPa, and the adhesive force of the metal coating and the base material is greatly improved.

Description

technical field [0001] The invention relates to the technical field of metal surface corrosion and protection, in particular to a metal wear-resistant and anti-corrosion coating and an arc spraying process thereof. Background technique [0002] At present, the domestic use of arc spraying technology is relatively successful in steel structures (bridges, TV towers, power transmission and transformation towers, underground cable ducts, low-temperature reaction chemical equipment). By spraying Zn, Al and other coatings to meet anti-corrosion requirements, the steel components are greatly extended. For example, a Chinese patent with application number: 201110119690.9 discloses a metal anti-corrosion coating and its arc spraying process. The metal anti-corrosion coating includes a zinc-aluminum alloy bottom layer, a pure aluminum metal middle layer and a closed paint surface layer. The thickness of the alloy bottom layer is 100 μm, the thickness of the pure aluminum metal middle ...

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This results in a large number of shutdowns for maintenance, which not only wastes a

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