Industrial aluminum tubes are usually defined as aluminum with purity of 99% to 99.9%. China is determined to be 98.8% to 99.7% aluminum.
Industrial aluminium pipe has the common characteristics of aluminum, low density, good conductivity, heat conductivity, corrosion resistance, good plastic processing performance, can be processed into plates, strips, foils and kneaded products, etc., can be gas welding, argon arc welding, spot welding. However,
industrial aluminium tubes can not be strengthened by heat treatment, only by cold deformation. The only way of heat treatment is annealing. The recrystallization initiation temperature is related to the content of impurities and the degree of deformation, usually at 200%.
Industrial aluminium tubes are widely used as
electrical aluminium, such as busbar, wire, cable, electronic parts; heat exchangers, coolers, chemical equipment; food and drug packaging products such as smoke, tea, sugar, beer barrels and other deep-drawing products; in the construction of roof panels, ceiling, wall, sound absorption and insulation materials, as well as household. Utensils, cooking utensils, etc. Aluminum electrolysis production can be divided into three categories: side-inserted anode rod self-baking cell, top-inserted anode rod self-baking cell and pre-baked anode cell.
Aluminum pipe production by self-baking tank has the characteristics of simple equipment, short construction period and less investment, but it has some shortcomings, such as flue gas can not be disposed of, pollution environment is severe, mechanization is difficult, labor intensity is strong, and it is not easy to be large-scale, and the output value of single cell is low, which is not easy to overcome.
At present, most countries and production companies in the world are using large pre-baked cell, the current intensity of the cell is very large, not only high degree of automation, low energy consumption, high output value of single cell, but also to meet the requirements of environmental regulations. China has completed the industrial experiment and industrialization of 180kA, 280kA and 320kA modern prebaked cells. Great success has been achieved in improving and reforming the skills centered on energy saving and environmental protection, and promoting the conversion of production skills from self-baked cells to pre-baked cells.
