Rusting of steel bars is a headache. Every year, the steel damaged by rust in construction sites in the world accounts for one-tenth of the steel output in that year. In China, nearly 654.38 billion tons of steel bars rust every year. Therefore, how to protect steel bars from corrosion is of great significance.

Rust removal of steel bars is a technical job? It is the most cost-effective to teach you how to remove rust in this issue. What are the benefits of steel rust removal?

At present, there are many treatment methods and countermeasures in the market. Generally, there are the following methods to remove rust from steel bars on the construction site:

A, artificial derusting

Manual derusting is the most commonly used method for steel derusting. Manual grinding uses scraper, wire brush, scraper and other tools. The advantage of this method is cost saving, but it also has many disadvantages, such as large labor force, low efficiency and incomplete rust removal. Only suitable for steel with small rust removal area and light corrosion degree.

Second, the machine rust removal

Generally, steel bar rust remover, sand blasting equipment and high-pressure water jet equipment are used for rust removal.

Three kinds.

Steel derusting machine is a commonly used mechanical derusting method at present, which is simple, stable, efficient and will not pollute the environment. However, the rust remover for steel bars is only applicable to the rust removal of steel bar raw materials.

Sand blasting can effectively remove impurities on the metal surface, such as scale and old rust. Good rust removal effect.

High-pressure water jet derusting equipment is a kind of high-pressure water jet, which can remove soft concrete and laitance and expose the joint surface. Cement slurry is added to the surface of construction joints to increase the cohesive force of new and old concrete. The method has the characteristics of high production efficiency, low cost and little environmental pollution.

Chemical rust remover

At present, the most environmentally friendly rust remover is an efficient rust remover prepared from various organic acids (vegetable acid, citric acid and edible phosphoric acid), complexing agent, penetration enhancer, corrosion inhibitor, surfactant, water and thickener.

The main features include high safety performance, no phosphorus, non-volatilization, tasteless, non-toxic, non-combustible, high efficiency, thorough rust removal, no damage to mother, no water washing after rust removal, no influence on post-treatment, weak acidity of medium and no acidification reaction.