Anti-corrosion technology of steel structure

Abstract

The invention provides an anti-corrosion technology of a steel structure. The steel structure used under a severe environment cannot be well protected through a single anti-corrosion method; accordingto the anti-corrosion technology provided by the invention, multi-layer anti-corrosion layers are provided for the steel structure through relatively simple technological steps, so that the corrosionresistance which is better than that in the prior art is provided for the steel structure. The anti-corrosion technology is characterized in that surface pretreatment is firstly carried out on the steel structure on which anti-corrosion treatment is to be carried out, then a thin metal layer is plated on the metal surface of the steel structure on which the anti-corrosion treatment is to be carried out by using an electroplating or hot dip method so as to form a first anti-corrosion layer, attention must be paid to control the thickness and the roughness of the first anti-corrosion layer during an electroplating or hot dip process, a nano anti-corrosion coating material which is prepared from the following ingredients of silicate, organic acid, zinc butyl octyl dithiophosphate and thiourea component is sprayed on the surface of the first anti-corrosion layer, a second anti-corrosion layer is formed through reaction between the first anti-corrosion layer formed through electroplating or hot dip and the ingredients in the nano anti-corrosion coating material, and a third anti-corrosion coating layer is formed by continuously spraying the nano anti-corrosion coating material in appropriate thickness. Through the technological process, the corrosion resistance of the steel structure is increased.

Description

technical field [0001] The invention relates to a steel structure anticorrosion process, in particular to a steel structure anticorrosion process with multiple protections, and belongs to the technical field of steel structure anticorrosion. Background technique [0002] Steel structure is a structure composed of steel materials, which is one of the main types of building structures. Due to the advantages of good plastic toughness, high strength, good seismic performance, short construction period, and convenient fabrication, steel structures are widely used in high-rise buildings. In the fields of structures, long-span structures, industrial plants, etc., at the same time, the corrosion problem of steel structures has become more prominent. [0003] The corrosion of steel structures can be divided into atmospheric corrosion, soil corrosion and marine corrosion according to the surrounding atmospheric environment, soil environment and marine environment; according to the cor...

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Problems solved by technology

[0004] Although the above anti-corrosion methods for steel structures have achieved good results in practical applications, because the above methods generally can only form a protective layer on the surface of the steel structure, once

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