Water soluble anti-rust agent

Abstract

The invention relates to a water soluble anti-rust agent on the surface of ferrous metal, which comprises the following components: 2 to 10 weight percent of barium petroleum sulfonate and / or barium dinonyl decyl sulfonate, 1 to 6 weight percent of sodium molybdate and / or amine molybdate, 0 to 10 weight percent of sebacic acid, 2 to 10 weight percent of polyacrylic ester, 3 to 20 weight percent of triethanolamine oleic soap and / or 2 to 6 weight percent of polyoxyethylenesorbitan monooleate, 0 to 15 weight percent of sodium alkylsulfonate, 0 to 8 weight percent of glycerin and the balance of water or machine oil. Compared with the conventional water soluble anti-rust agent, the water soluble anti-rust agent of the invention has the advantages of short film forming time, firm film forming adsorption and good anti-rust effect; the actual anti-rust period can reach 3 to 6 months; the formed film is thin and only 3 to 5 microns; common workpieces do not need film removal and can be directly assembled and coated; the film removal is convenient, and the film is only soaked and rinsed in mild water over 50DEG C and then can be removed quickly; and the anti-rust agent has no component containing toxic and harmful substances, does not contain phosphorus, has the advantages of good environmental protection and no pollution to the environment, and is the environment-friendly water solubleanti-rust agent.

Description

technical field [0001] The invention relates to a ferrous metal surface antirust liquid, in particular to an environment-friendly, pollution-free water-soluble antirust agent with good antirust effect. Background technique [0002] Ferrous metals are sealed between production processes and finished products. In order to prevent surface corrosion, non-painted anti-rust treatment must be carried out, such as applying anti-rust agents on the surface. In the prior art, anti-rust oil on metal surface was used earlier, and a protective oil film was formed on the metal surface through the anti-rust oil to isolate the corrosion of metal by water vapor in the air, so as to achieve a longer period of time. anti-rust. However, the use of anti-rust oil not only consumes a large amount of oil raw materials, which increases energy consumption, but also requires cleaning and degreasing in subsequent processing (such as welding, painting, electroplating, assembly) and unsealing, which not ...

AI Technical Summary

Problems solved by technology

The water-based cold-rolled lubricating antirust agent disclosed in Chinese patent CN1042375 basically adopts strong alkaline substances, which not only have extremely strong corrosiveness to the human body, but also cannot form a moisture-proof anti-corrosion agent on the metal surface like anti-rust oil. Rust protection film, the moisture in the air is still easy to seep to the metal surface to cause corrosion, so the anti-rust time is not long

The water-soluble antirust agent disclosed in Chinese patent CN1084534 also does not form a closed protective film on the metal surface, so the antirust effect is still limited, and the concentration is ≥ 10%, and the antirust is only 1-2 months

Although it has a good anti-rust effect, paraffin is the most primitive film-forming agent, but because the film is thicker, one must remove the film before entering the next process, and the other is that it is difficult, labor-intensive and time-consuming to remove the paraffin film