The main characteristics of aluminum alloys for aerospace are: large-scale and integral, thin-walled and light-weight, section size and shape precision, homogenization and high quality of microstructure and properties. Aluminum profiles for aerospace use mainly include: integral stiffened panels, i-beams, wings of Kaifeng, comb profiles, hollow Kaifeng profiles, etc. , mainly used for aircraft, spacecraft and other aerospace structure parts, as well as helicopters shaped hollow rotor beam and airstrip and so on.
Aluminum alloy products profiles have also developed greatly in the aerospace industry because of their light weight, strong plasticity, corrosion resistance and easy assembly. Large-scale special aluminum alloy profiles have become one of the important research subjects in various places, at present, a lot of large-scale special aluminum alloy extrusion profiles have become important structural materials in aerospace industry. For example: each passenger aircraft needs aluminum plate and aluminum alloy needs about dozens of tons, each aircraft shell needs high-quality aluminum profile manufacturing. The aircraft skeleton needs to be clad in aluminium alloy, and the main skeleton needs to be supported by extruded profiles. For this reason, many countries have set up research institutes to study the application of aluminum profile in aircraft.
Aluminum alloy profiles are not only widely used in aircraft, rockets, missiles and other spacecraft can be used. For example, because 2219 aluminum alloy heat resistance, low-temperature performance and other characteristics can be made into a rocket fuel tank. For example, the weldability of aluminum alloy, can also be made into the skeleton part of the rocket. In addition to the skeleton and fuel tank, rockets, missiles and other parts of the structure is also made of aluminum alloy. In addition to the above, the skeleton of the manned aircraft is made from 2024 and 7075 aluminium alloy. Because these two kinds of aluminum alloy strength, light weight, thin thickness. Aluminum alloy plates are also used on these objects, such as protective panels, safety devices, propellers, and so on.