Environmental-friendly water-based antirust agent

Abstract

The invention relates to an environmental-friendly water-based antirust agent, which mainly comprises boric acid, ethanolamine, a neutralizer, a corrosion inhibitor, an additive, water and the like. During use, the antirust agent is mixed with the water in a ratio of 1:5-1:20 to form antirust solution, and a steel workpiece is soaked in the antirust solution at the temperature of between 50 and 70 DEG C for 3 to 5 minutes and taken out; a continuous and compact thin film is formed on the surface of the soaked workpiece, so that oxygen and water vapor can be effectively prevented from contacting the surface of the workpiece, the primary color of the workpiece is kept unchanged, and the aim of rust prevention is fulfilled; and the treated workpiece can be directly subjected to the next process, so that the complex process of removing an antirust coating is reduced. The antirust agent does not contain poisonous and harmful substances such as nitrite, phosphate, bichromate and the like, cannot irritate and harm human bodies, and is an environmental-friendly water-based antirust agent.

Description

technical field [0001] The invention relates to an antirust agent attached to a metal surface, in particular to a water-soluble metal antirust agent between processes, and belongs to the field of metal antirust. Background technique [0002] At present, many metal processing manufacturers do not pay much attention to the rust prevention between the production and manufacturing of steel workpieces. During the processing, handling and inspection of workpieces, due to humid air, hand sweat and contact with harmful gases in the atmosphere, the workpieces are prone to rust, resulting in the scrapping or rework of the processed workpieces. In order to prevent steel workpieces from rusting during storage, antirust treatment must be carried out. Anti-rust treatment includes oil-based anti-rust treatment and water-based anti-rust treatment, among which the soft film thin layer anti-rust oil in oil-based anti-rust treatment can be used for anti-rust between processes. Soft film anti...

AI Technical Summary

Problems solved by technology

However, when the workpiece undergoes the next process, the anti-rust oil on the surface needs to be cleaned with a cleaning agent, otherwise it will have an adverse effect on the subsequent treatment of the workpiece surface

At the same time, the oil-based antirust agent is flammable, which brings serious safety hazards to the production process, and also causes pollution to the surrounding working environment.

Water-based anti-rust treatment is compounded with nitrite as the main agent. Although its anti-rust effect is good and the price is low, this type of anti-rust agent is very toxic and has great harm to the human body and the environment. ;Because it is a salt-based substance, it is easy to form white spots on the metal surface after use, which will affect the appearance; it is very sensitive to acid and alkali, and the effective concentration of the working fluid used must also be paid great attention to, otherwise it will not only fail to prevent rust, but also cause corrosion role, known as "dangerous" rust inhibitor

[0003] Although many new varieties of water-based antirust agents have been developed in recent years, there is still a certain gap compared with the current requirements for water-based antirust agents in the metal processing industry, and the existing products cannot fully meet the needs of the market.

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