The difference between aluminum alloy and aluminum plate
mepehuxit > 04-09-2018, 03:07 AM
Aluminum alloy is the most widely used nonferrous metal structure material in industry, and has been widely used in aviation, aerospace, automobile, machinery manufacturing, shipbuilding and chemical industry. With the rapid development of science and technology and industrial economy in recent years, the demand for aluminum alloy welding structure is increasing, and the welding research of aluminum alloy is also deepened. Aluminum alloy is widely used to promote the development of aluminum alloy welding technology, at the same time, the development of welding technology and expand the application field of aluminum alloy, thus the welding technology of aluminum alloy is becoming one of the hot spot of research. Aluminum alloy: aluminium based alloy general term. The main alloy elements are copper, silicon, magnesium, zinc and manganese, and the secondary alloy elements are nickel, iron, titanium, chromium, lithium, etc.
The density of pure aluminum (rho = 2.7 g/cm3), is about 1/3 of the iron, low melting point (660 ℃), aluminum is face-centered cubic structure, therefore, has the very high plasticity (delta: 32 ~ 40%, and bits of: 70 ~ 90%), easy to machining, can be made into various molding, plate. Good corrosion resistance; However, the strength of pure aluminum is very low, and the value of the annealing state is about 8kgf/mm2, so it is not suitable for structural materials. Through long-term production practices and scientific experiments, people gradually strengthened aluminum by adding alloy elements and using heat treatment methods, which resulted in a series of aluminum alloys. In addition, the alloy with certain elements can have high strength while maintaining the advantages of pure aluminum, and the value of b can be up to 24 ~ 60kgf/mm2 respectively. So that its "strength" (the ratio of intensity and the proportion of sigma b/rho) is better than a lot of alloy steel, become the ideal structural material, widely used in machinery manufacturing, transportation, machinery and aviation industry, the aircraft fuselage, skin, such as compressor with aluminum alloy manufacture, in order to reduce weight. Using aluminum alloy instead of steel plate material welding, the structure weight can be reduced by more than 50%.
Aluminum alloy density is low, but the intensity is high, close to or more than high-quality steel, plastic, can be processed into various profiles, with excellent electrical conductivity, thermal conductivity and corrosion resistance, widely used on industry, usage is second only to the steel.
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