ã€China Aluminum Industry Network】 1. Extension performance elongation of aluminum alloy cable is an important indicator of the mechanical performance of the conductor, and is an important indicator of the merits of the product and its ability to withstand external forces. It is also an important indicator to test the mechanical properties of cable conductors. After the aluminum alloy cable has been annealed, the elongation rate can reach 30%, while the elongation rate of the copper cable is 25%, and the elongation rate of the common aluminum rod is 15%, which is an important index that can replace the aluminum core cable and the copper cable.
2. Flexibility of aluminum alloy cables can be reversed to test: The main test is the toughness of metal wire, the better the toughness, the more torsion times can be tolerated. An important drawback of ordinary aluminum wire is high brittleness. When it is installed, the conductor will crack when twisted at a certain angle and the crack will generate heat and corrosion, which is an important cause of fire. The use of aluminum alloy cables, because of its good toughness, will not produce cracks, the safety hazards that appear in the installation are reduced.
3, the bending performance of aluminum alloy cable bending test: The main test of the metal's resistance to bending. Materials with uneven or brittle materials have poor bending resistance. According to the provisions of GB/T 12706 for the bending radius of copper cable installation, the bending radius of copper cable is 10-20 times the cable diameter, the smaller the bending radius of aluminum alloy cable is 7 times the cable diameter, the use of aluminum alloy cable can reduce the layout Space, easier to install and reduce installation costs.
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