Film-covering process method for preventing steel plate surface from being rusted in short term

Abstract

The invention discloses a film-covering process method for preventing a steel plate surface from being rusted in short term. The chemical reagents, such as 0.5-5% of potassium oxalate [KCOOH], 1.2-5.5% of glycine zine, 1.5-3% of ethylene diamine tetraacetic acid (EDTA), 0.3-2.5% of titanium chelate and 15-20% of polyoxyethylene ether emulsion are adopted to prepare into an environment-friendly organic water-soluble antirusting agent which is coated on a surface of a newly produced steel plate to form a film; and the film is compact, even and hard, can firmly bond with the steel plate, has good inoxidizability, and can effectively prevent the steel plates from being rusted caused by climatic changes during inventory and transportation. The film-covering process method of the invention can be used for ensuring non-oil, non-benzene and non-phosphorus ring on the steel plate surfaces; the existing oxide skin washing method of the steel plate surface can be used to eliminate the coating films simply and easily; the environment-friendly organic water-soluble antirusting agent can be used circularly, and has non-corrosiveness, explosiveness in a non-ignitable state as well as safety and environmental protection.

Description

technical field [0001] The invention belongs to the short-term anti-rust technology of steel plates, and in particular relates to a short-term anti-rust film coating process on the surface of steel plates. Background technique [0002] During the storage and transportation of the rolled finished steel plate in the warehouse, due to the change of air humidity and temperature, condensation, dust, salt accumulation and dissolved oxygen will be formed on the surface, which will form tiny cells of condensation and electrochemical corrosion . The larger the damp area on the surface of the steel plate, the larger the number of tiny batteries, and the larger the area of ​​electrochemical corrosion, especially the steel plates stacked in the open air at the transportation and docks, the surface is more prone to electrochemical corrosion after being exposed to rain, and the wet climate and ocean in winter and spring are more prone to electrochemical corrosion. The atmosphere inevitab...

AI Technical Summary

Problems solved by technology

The paint coating is prone to peeling off due to the shrinkage force of the paint solidification on the surface of the steel plate, the effect is not ideal, and it is not easy to remove; the anti-rust oil has a certain anti-corrosion effect indoors, and the outdoor effect is not so good, and it is not easy to transport operation, and it is difficult to remove surface paint, oil stains and oxide scales at the same time, it is difficult for subsequent manufacturers to accept, and manufacturers cannot accept the pollution of the environment by toxic substances such as benzene and phosphorus in paint and anti-rust oil

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