Specifications for the use of aluminum in buildings

Release time:

2022-08-23

Deformed aluminum alloy is divided into rust-proof aluminum alloy, duralumin, super duralumin and special aluminum according to its properties and uses. Generally, industrial pure aluminum (L1 ~ L1), rust-proof aluminum alloy (LF2, LF21, etc.) and forged aluminum (LD2) are used in construction.

Construction products made of aluminum and aluminum alloys. Usually, it is first processed into casting products, forging products and foils, plates, belts, pipes, rods, profiles, etc., and then made by cold bending, sawing, drilling, assembly, coloring and other processes.

Performance Pure aluminum has low strength and its use is limited. But by adding a small amount of one or several alloying elements, such as magnesium, silicon, manganese, copper, zinc, iron, chromium, titanium, etc., aluminum alloys with different properties can be obtained. After cold working and heat treatment, aluminum alloy is further strengthened and hardened, and its tensile strength is greatly improved.

The standard potential of aluminum is -1.67 volts, and its chemical properties are very active. It is easy to interact with the oxygen in the air to form a solid and dense oxide film. Therefore, in the ordinary atmosphere and clean water, aluminum has good corrosion resistance. But when it comes into contact with steel or other metal materials, it will produce electrochemical corrosion. When it comes into contact with alkaline materials such as concrete, cement mortar and lime in a humid environment, it will produce corrosion. When it comes into contact with wood and soil, it will also produce corrosion. Therefore, it is necessary to carry out appropriate anti-corrosion treatment.

Aluminum alloy can be divided into cast aluminum alloy and deformed aluminum alloy according to different production methods. In construction, deformed aluminum alloy is generally used to roll into plates, foils, strips, and extruded into rods, tubes or profiles of various complex shapes. Deformed aluminum alloy is divided into rust-proof aluminum alloy, duralumin, super duralumin and special aluminum according to its properties and uses. Generally, industrial pure aluminum (L1 ~ L1), rust-proof aluminum alloy (LF2, LF21, etc.) and forged aluminum (LD2) are used in construction.