A kind of rapid corrosion method of weathering steel plate

Abstract

The invention provides a quick rusting method for a weather-proof steel plate. The surface of the steel plate is subjected to cleaning treatment through abrasive paper, an angle grinder or shot blasting, namely, manual or mechanical methods are adopted, thus, the surface of the steel plate is free of rust, oil and other attachments and then is sequentially subjected to homogenizing, preoxidation,oxidation and follow-up treatment, that is, a nickel salt solution is made to adhere to the surface of the steel plate through a brush coating method, a roller coating method or a spraying method; a hydrogen peroxide solution is attached to the surface of the steel plate; then, oxidation liquid is attached to the surface of the steel plate; and finally, one or two of water, a sodium chloride solution or a sodium hydrogen sulfite solution are attached to the surface of the steel plate. According to the quick rusting method, the requirements for the construction environment are low, utilized equipment is simple and easy to operate, the implemented technology is simple and easy to carry out, a stable rust layer can be quickly formed on the surface of the weather-proof steel plate, the environment pollution defects such as rust liquid sagging, flying and scattering are avoided, and the quick rusting method is suitable for metallurgical enterprise and construction site operation.

Description

technical field [0001] The invention belongs to the field of corrosion and protection of steel plate materials, and in particular relates to a rapid corrosion technology for steel materials, specifically a rapid corrosion method for weather-resistant steel plates. Background technique [0002] Weathering steel is a low-alloy steel with good atmospheric corrosion resistance. During use, a dense rust layer is formed on its surface, which can effectively prevent the entry of corrosive media. Weathering steel has developed rapidly due to its effectiveness in resisting atmospheric corrosion compared with ordinary carbon steel and its economy compared with stainless steel and other corrosion-resistant steels, and has been widely used in railway vehicles, containers, towers, bridges and other fields. [0003] There are some urgent problems to be solved when weathering steel is used in the bare environment. It usually takes about three years to form a protective rust layer on the s...

AI Technical Summary

Problems solved by technology

[0006] It can be seen that the above-mentioned treatment technology is still immature, mainly manifested in: the treatment agent still has significant coating properties, is not environmentally friendly, the implementation process of some technologies is relatively complicated, and has high requirements on the surface quality of materials, which is not suitable for metallurgical enterprises and construction sites.

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