Seamless tubes characteristics and uses


Seamless tubes of aluminum – copper – magnesium lines typical of hard alloy, its composition is more reasonable, better overall performance. Many countries are producing the alloy, it is the largest amount of hard aluminum. aluminum tubes is characterized by: high strength, a certain heat resistance, can be used below 150 ℃ working parts. A temperature higher than 125 ℃, 2024 alloy strength is higher than 7075 alloy. Hot state, annealing and quenching conditions forming the new performance is better than the heat treatment significantly enhanced the effect, but the heat treatment process demanding. Corrosion resistance is poor, but with aluminum coating can be effectively protected; welding easy to crack, but using a special welding process can also be riveting.Seamless tubes is a high strength aluminum hard, can be heat strengthened, in the quenched and immediately quenched plastic medium, spot welding is good, tends to be formed between the intergranular cracks with welding, the alloy after quenching and work hardening its still good machinability after annealing can be as low cutting resistance: corrosion resistance is not high, often with anodized and painted method or surface plus clad layer to improve its corrosion resistance.Seamless tubes mainly used for the production of high-load parts and components (but not including stampings forgings) aircraft parts such as skeleton, skin, bulkheads, wing ribs, spars, rivets and other working parts below 150 ℃

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