Why do aluminum curtain wall support structures mostly use high-quality carbon structural steel?
Publish Time: 2025-06-17
With the continuous evolution of modern architectural design concepts, aluminum curtain wall, as a kind of exterior wall decoration material with both aesthetics and functionality, is widely used in various buildings such as high-rise buildings, commercial complexes, office buildings and cultural venues. It not only improves the overall texture of the building's appearance, but also has good weather resistance, strength and construction adaptability. It is an important part of the facade design of contemporary buildings.The aluminum curtain wall system is usually composed of aluminum alloy profiles, glass, stone or other decorative panels. Among them, steel, as the key material for supporting the skeleton, plays a decisive role in the entire structural system. Commonly used steels include high-quality carbon structural steel and galvanized steel. They have high tensile strength, bending resistance and good weldability. They can effectively withstand wind loads, seismic forces and other external forces, and provide a solid support foundation for aluminum curtain wall.High-quality carbon structural steel is often used in the manufacture of curtain wall main keels and secondary keels due to its stable mechanical properties and mature processing technology. Its high strength characteristics enable structural components to achieve a lighter design while meeting the load-bearing requirements, reducing the weight of the overall curtain wall system and improving installation efficiency. Galvanized steel has more advantages in corrosion resistance. The zinc layer formed by hot-dip galvanizing can effectively isolate air and moisture, prevent steel from oxidizing and rusting, thereby extending the service life of the curtain wall support structure, especially suitable for coastal areas or urban environments with severe industrial pollution.In addition to the choice of steel, the surface treatment process of aluminum curtain wall also directly affects its durability and appearance. Common treatment methods include sandblasting, painting and hot-dip galvanizing. Sandblasting can remove the oxide scale and impurities on the surface of steel, making it smoother and enhancing the adhesion of subsequent coatings; painting can choose the appropriate color according to the overall style of the building, and at the same time play a further anti-corrosion role; hot-dip galvanizing is currently one of the most effective anti-rust means. The galvanized layer formed is not only dense and uniform, but also can continue to protect the steel body through sacrificial anodes in the case of damage.In the actual construction process, the steel skeleton of the aluminum curtain wall needs to go through multiple links such as precise measurement, cutting, welding and installation. In order to ensure the safety and stability of the structure, the construction party usually adopts a modular assembly method to reliably connect the skeleton with the main building structure, and cooperates with the expansion joints, drainage holes and other details to cope with the influence of natural factors such as temperature changes, wind and rain erosion.In addition, aluminum curtain wall also has good energy-saving performance. By selecting energy-saving materials such as Low-E glass and broken bridge insulation profiles, combined with reasonable ventilation design, aluminum curtain wall can block solar radiation heat in summer and reduce indoor heat loss in winter, thereby reducing the overall energy consumption of the building, which is in line with the development trend of green buildings.Aluminum curtain wall has become an indispensable part of modern architecture with its excellent structural performance, diversified surface treatment methods and excellent combination of decoration and functionality. The high-quality carbon structural steel and galvanized steel used in its supporting structure also play an important role in ensuring the safety of curtain walls and extending their service life. In the future, with the continuous advancement of building materials technology, aluminum curtain wall will show its unique value in more high-end construction projects.
