Where weathering steel can be used

Weathering steel application

Engineering example

First, high-performance weathering steel and refractory steel can reduce the maintenance costs of steel structures, and provide new solutions to solve the fire prevention and corrosion problems of exposed unprotected steel structures, such as high voltage towers

Second, the production and installation process of fire-resistant weathering steel is basically the same as that of conventional steel, and the design method is the same as that of ordinary steel structure, but more tests are needed to verify

Third, high-strength weathering steel has been popularized and applied in bridge engineering, and it is necessary to study the design theory and method

Fourth, fire-resistant weathering steel can also be used in floor bearing plate

Weather resistant steel flower pot

development planning

Weathering steel, as a new generation of advanced steel materials, atmospheric corrosion resistance can be 2 to 5 times that of ordinary carbon steel, and the longer the use time, the more prominent the corrosion resistance. Due to its characteristics of rust resistance, no painting, thinning and consumption reduction, labor and energy saving, it can be applied to buildings, vehicles, Bridges, towers and other steel structures exposed to the atmosphere for a long time, and can also be used in the manufacture of containers, railway vehicles, oil derricks, port buildings, oil platforms and other structural parts.

The "Twelfth Five-Year Plan" development plan of the steel industry shows that the demand for weathering steel in China is gradually increasing, which is highlighted in the construction of railways, highways and power towers. In the United States, Japan and other developed countries, weathering steel has been widely used. China's weathering steel started late, but with the rapid development of the national economy, the application of weathering steel has aroused the great attention of the relevant domestic departments, so the research and development and upgrade of weathering steel and its anti-corrosion has important practical significance, but also conducive to promoting the upgrading of the steel industry product structure.

Weathering steel has good atmospheric corrosion resistance, although the application of weathering steel early investment cost is slightly higher than ordinary carbon steel, but compared with ordinary carbon steel surface spraying anti-corrosion coating and other methods, the later maintenance cost of ordinary carbon steel is 1.5-2 times of weathering steel. Therefore, weathering steel can reduce environmental pollution and belongs to the key promotion technology of energy conservation and emission reduction. Most of the domestic weathering steel is painted, and the original design intention of free painting and "rust prevention" has not been maximized. In the harsh service environment, the rust layer of weathering steel is difficult to densification, and in the early stage of service, the appearance of steel structure rust is uneven and other related problems, so the application environment and surface treatment technology of weathering steel have been plaguing the application of weathering steel.

Weathering steel retaining plate

Application in World Expo

The National Pavilion of the Grand Duchy of Luxembourg at the Shanghai 2010 World Expo has an overall rust color, because the construction material is a special steel called weathering steel. Weathering steel is also called Corten steel, its special feature is that, exposed to the natural environment, through the action of air, rain, etc., the steel surface will automatically form a protective layer of corrosion resistance, no need to paint protection, the life of the material is more than 80 years. Following the use of weathering steel for the facade of the Sino-French Center at Tongji University in 2004, the Luxembourg Pavilion was used again. When finished, the Luxembourg Pavilion will feature a natural primary color of weathering steel, while the interior walls will be made of fir wood. The new weathering steel and natural fir wood create a sculptural castle that is not only artistic, but also understands the contemporary concept of environmental protection and sustainability. At the same time, it also portrays the image of Luxembourg, which is closely related to steel - for more than 100 years, Luxembourg has been famous for its excellent steel making technology, and the steel used in the construction of the Eiffel Tower in Paris came from Luxembourg. The weathering steel used in the Luxembourg Pavilion will also be imported from Luxembourg. In addition, the weathering steel used to construct the entire Luxembourg Pavilion can be 100% recycled after the pavilion is demolished.

The Australian pavilion at the Shanghai 2010 World Expo is made of red ochre weathering steel. A rolling, wavy facade of weathering steel plates represents Australia's coastline and its resource advantage in iron ore. The raw material for weathering steel is sourced from mines in western Australia and produced by local factories. The museum specially placed a circle of natural ores around the exhibition hall. The floor tiles around the Australian Pavilion are all red, and the raw materials of these floor tiles are also produced in the red land belt, which is transported by more than ten containers across the sea to Shanghai. Inside and out, red not only represents nature, but also embodies the concept of "industry" and "city".