Surface treatment agent capable of generating red stable rust layer

Abstract

The invention discloses a surface treatment agent capable of generating a red stable rust layer. The surface treatment agent comprises the following components in percentage by mass: 20-30% of alcohol-soluble phenolic aldehyde varnish, 2-5% of nickel phosphate, 2-5% of sodium tungstate, 2-3% of sodium silicate, 5-10% of Fe(OH)3, 30-35% of Fe2O3 and 23-33% of one or more dilution solvents. The surface treatment agent disclosed by the invention is suitable for bare steel coating; after bare steel is coated with the surface treatment agent, the red uniform stable rust layer is generated on the surface of the bare steel, and has the long-term effective properties of rust liquid sagging prevention and corrosion prevention; and the adopted surface treatment agent has no strong irritating odor, contains no chromium and nitrite, and is safe and environmentally friendly.

Description

technical field [0001] The invention belongs to the technical field of metal protection, in particular to a surface treatment agent for forming a red stable rust layer. Background technique [0002] Metal corrosion is a failure process of metals under the action of environmental corrosive media. It is the inverse process of metallurgical production, and the entropy is constantly increasing. It is an inevitable natural phenomenon that occurs completely spontaneously. Atmospheric corrosion is an important cause of early failure and damage of products, equipment, devices, structural parts, etc., and the economic losses caused by atmospheric corrosion are serious every year. [0003] In the atmospheric natural environment, the formation of a stable protective rust layer on bare steel is a gradual process, which takes a long time, at least 3 years, and some bare steel surfaces form a dense and stable rust layer for more than 10 years. In the process of forming a stable rust laye...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a surface treatment agent that generates a red stable rust layer, which is suitable for bare rust, in view of the current steel surface treatment requirements for the appearance and color of different rust layers and the lack of protection stability of the rust layer obtained by the existing surface treatment agent. Steel coating that produces a red uniform and stable rust layer on bare steel surfaces with excellent, consistent anti-rust sag and anti-corrosion properties