What are the advantages of aluminum alloy cable? Guangdong cable manufacturers for your confusion

Release time: 2022-05-25 14:39

【Summary description】 Guangdong cable manufacturers believe that aluminum alloy power cable has good mechanical and electrical properties, can be widely used in various areas of the national economy, such as ordinary residential buildings, high-rise buildings, elevators, large and small shopping malls, etc. Let's take a look at the advantages of aluminum cable.

Guangdong cable manufacturers believe that aluminum alloy power cable has good mechanical and electrical properties, can be widely used in various areas of the national economy, such as ordinary residential buildings, high-rise buildings, elevators, large and small shopping malls, etc. Let's take a look at the advantages of aluminum cable.

1. Creep strength. Guangdong cable manufacturers believe that the alloy material and annealing process of aluminium alloy cables reduce the tendency of conductors to "creep" under heat and pressure. Compared with pure aluminum, creep resistance is increased by 300%, and relaxation problems caused by cold flow or creep are avoided.

2. Tensile strength and elongation. Compared with pure aluminum wire, the tensile strength of aluminum alloy cable is greatly improved, the elongation is 30% higher than copper, the flexibility is 33% higher than copper, the elasticity is 40% lower than copper, so it is safer and more reliable to use.

3. Coefficient of thermal expansion. Guangdong cable manufacturers think the coefficient of thermal expansion is used to calculate the size change of the material when the temperature changes. The coefficient of thermal expansion of aluminum alloy is similar to that of copper. Aluminum connectors have been used reliably in copper and aluminum conductors for many years, and most electrical connectors in use today are made of aluminum, which is particularly suitable for aluminum alloys. As a result, aluminum alloy conductors and connectors expand and contract in exactly the same way.

4. Connection performance. Guangdong cable manufacturers consider electrical connections made of aluminum alloy as safe and stable as those made of copper wires. The composition of aluminum alloy greatly improves its connection performance. When the conductor is annealed, the added iron produces high strength creep resistance, which ensures the stability of the connection even in the case of long-term overload and overheating.

5. Strong self-weight carrying capacity. Guangdong cable manufacturers argue that aluminium alloys increase the tensile strength of pure aluminium. Aluminum cables can support up to 4,000 meters of deadweight, while copper cables can only support 2,750 meters. This advantage is particularly prominent in the wiring of long-span buildings such as stadiums.

6. Corrosion resistance. Guangdong cable manufacturers attribute aluminium's inherent resistance to corrosion to the formation of a thin but strong oxide layer on its surface when it comes into contact with air, which is particularly resistant to various forms of corrosion. The addition of rare earth elements in the alloy can further improve the corrosion resistance of the alloy, especially the electrochemical corrosion resistance. Aluminum can withstand harsh environments, which makes it widely used as a conductor for cables in pallets, as well as many industrial components and containers. Corrosion is usually associated with the connection of different metals in a humid environment. Protective measures can be used to prevent corrosion, such as lubricants, antioxidants, and protective coatings. Alkaline soil and some types of acidic soil environments are very corrosive to aluminum, so directly buried aluminum wires should be anticorrosive with insulation or moulded sheath. In sulphur-containing environments, such as railway tunnels and similar places, aluminium alloys have much better corrosion resistance than copper.

7. Flexibility. Guangdong cable manufacturers believe that aluminum alloy has good bending properties, and its unique alloy formula and processing technology greatly improve its flexibility. Aluminum alloys are 30% more flexible and 40% less elastic than copper. Generally, the bending radius of copper cables is 10 to 20 times of the outer diameter, while the bending radius of aluminum cables is only 7 times of the outer diameter, making it easier to connect terminals.