The concept of corten steel

Corten steel is a type of steel that can be used in the atmosphere without the use of any paint or other protective agents. The steel has strong resistance to atmospheric erosion, good durability, good processability and strong adaptability. Under natural conditions, under weathering, rain washout, snow rain, freezing, it can still maintain its mechanical properties and keep the building intact for a long time.
At present, common corten steels at home and abroad include: galvanized corten steel, hot-dip galvanized corten steel, chromium-free passivated corten steel and sprayed corten steel. Among them, the first three belong to ordinary corten steel plates, while sprayed corten steel belongs to special corten steel plates and needs special processing.

Development of corten steel

Corten steel appeared in the 70s of the 20th century, which is mainly used for outdoor walls, roofs and other decorative components of buildings. During the production process of corten steel, a special corrosion film will be produced on its surface, which has a certain degree of oxidation resistance and weather resistance, and its own gloss is very good, which increases the aesthetics of the building.
Britain, the United States, the Soviet Union studied it in the early sixties of the 20th century. In the late 70s of last century, the United States developed a weather-resistant steel. The United States and the Soviet Union successively developed austenitic stainless steels such as high-strength, high-toughness corten steel, such as corrosion-resistant acid-resistant steel, in the late 80s and early 90s. High nickel-chromium corten steel is a new type of material that was widely used in the 70s, so it has attracted attention at home and abroad. In recent years, China has also made great progress in this field. A series of different types and grades of steel have been developed.

What should we pay attention to during use?

For corten steels, they are usually surface treated and cannot come into contact with acidic or alkaline corrosive substances. In addition, in corrosive environments, corresponding protective measures should be taken to avoid corrosion. To prevent rust, dirt and rust on the anti-rust layer must be removed. At the same time, the carbon content in raw materials should be strictly controlled, and its chemical composition and mechanical properties should be controlled. Especially in the welding process, high-strength, corrosion-resistant steel must be selected. For corten steel parts, their thickness and weight should be checked regularly to prevent rust.

Conclusion

The emergence and development of corten steel marks the major development of China's steel industry and has become an important symbol of China's steel industry. The application of corten steel is mainly concentrated in the fields of construction, marine facilities and other fields, and although corten steel has been widely used in the construction industry, its application field is very limited due to the corrosion resistance of corten steel itself and other factors. For example: offshore platforms, marine environments with strong marine corrosiveness. Therefore, the improvement methods of corten steel are: hot-dip zinc, hot-dip aluminum, etc., replacing traditional corten steel. With the development of industry and the improvement of people's awareness of environmental protection, corten steel has been widely used in industry, construction and other industries, achieving a win-win situation in society and the economy.