The good mechanical and electrical properties of aluminum alloy power cable make it widely used in various fields of the national economy, such as ordinary houses, high-rise buildings, elevators, large and small supermarkets, subways, airports, stations, hospitals, banks , Office buildings, hotels, postal and telecommunications buildings, exhibition halls, libraries, museums, ancient buildings, schools, power buildings, public entertainment venues, tunnels, underground buildings, warehouses, etc., can also be used in metallurgy, steel, coke, coal, Power plants, power transmission and substations, shipbuilding, petroleum, chemical, pharmaceutical, nuclear power plants, aerospace, military, papermaking and other industries, as well as household appliances, automobiles, and public transportation facilities.

1. Creep resistance

The alloy material and annealing process of the aluminum alloy conductor reduce the tendency of the conductor to "creep" under heat and pressure. Compared with pure aluminum, the creep resistance is increased by 300%, and the relaxation problem caused by cold flow or creep is avoided .

2. Tensile strength and elongation

Compared with pure aluminum conductors, aluminum alloy conductors have greatly improved tensile strength due to the addition of special ingredients and special processing technology, and the elongation has increased to 30%, and the flexibility is 33% higher than that of copper. 40% lower, safer and more reliable to use.

3. Thermal expansion coefficient

The coefficient of thermal expansion is used to calculate the dimensional change of the material when the temperature changes. The thermal expansion coefficient of aluminum alloy is equivalent to that of copper. Aluminum connectors have been reliably used for copper and aluminum conductors for many years, and most electrical connectors used today are made of aluminum, which is especially suitable for aluminum alloys. Therefore, the expansion and contraction of the aluminum alloy conductor and the connector are exactly the same.

4. Connection performance

Electrical connections made of aluminum alloy are as safe and stable as connections made of copper conductors. The composition of aluminum alloy greatly improves the connection performance. When the conductor is annealed, the added iron produces high-strength creep resistance, which can ensure the connection stability even when overloaded and overheated for a long time.

5. Strong weight bearing capacity

Aluminum alloy improves the tensile strength of pure aluminum. Aluminum alloy cables can support a length of 4000 meters, while copper cables can only support 2750 meters. This advantage is particularly prominent when wiring large-span buildings (such as stadiums).

6. Anti-corrosion performance

The inherent anti-corrosion properties of aluminum come from the formation of a thin and strong oxide layer when the aluminum surface is in contact with air, which is particularly resistant to various forms of corrosion. The rare earth elements added to the alloy can further improve the corrosion resistance of the aluminum alloy, especially electrochemical corrosion. Aluminum's ability to withstand harsh environments makes it widely used as conductors for cables in trays, as well as many industrial components and containers. Corrosion is usually related to the connection of different metals in a humid environment. Corresponding protective measures can be used to prevent corrosion, such as the use of lubricants, antioxidants and protective coatings. Alkaline soils and certain types of acidic soils are more corrosive to aluminum, so directly buried aluminum conductors should use insulating layers or molded sheaths to prevent corrosion. In sulfur-containing environments, such as railway tunnels and other similar places, the corrosion resistance of aluminum alloy is much better than that of copper.

7. Flexibility

Aluminum alloy has good bending properties, and its unique alloy formula and processing technology greatly improve flexibility. Aluminum alloy is 30% more flexible than copper and has a 40% lower resilience than copper. Generally, the bending radius of copper cables is 10-20 times the outer diameter, while the bending radius of aluminum alloy cables is only 7 times the outer diameter, making it easier to connect terminals.

8. Armour characteristics

Most commonly used armored cables in China are armored with steel tape, with low security level. When exposed to external destructive forces, their resistance is poor, which is easy to cause breakdown, and they are heavy in weight, relatively high in installation costs, and poor in corrosion resistance. The service life is not long. The metal interlocking armored cable we developed according to American standards uses aluminum alloy tape interlocking armor. The interlocking structure between the layers ensures that the cable can withstand the strong destructive force from the outside, even if the cable is subjected to greater pressure The cable is not easy to be punctured under the impact force, which improves the safety performance. At the same time, the armored structure isolates the cable from the outside world. Even in the event of a fire, the armored layer improves the flame-retardant and fire-resistant level of the cable and reduces the risk of fire. Compared with the steel tape armored structure, the aluminum alloy tape armored structure is lighter in weight, convenient to lay, and can be installed without bridges, which can reduce installation costs by 20% to 40%. Different outer sheath layers can be selected according to different places of use, which makes the use of armored cables more extensive.

9. Compression characteristics

Considering the volume conductivity alone, aluminum alloy is inferior to copper, but the conductor we developed has not only improved the material properties, but also made big breakthroughs in the process. We use ultra-conventional compression technology to make the compression coefficient It can reach 0.93, and the compression coefficient of the special-shaped wire can reach 0.95, which is the first in China. Through the maximum compression, it can make up for the lack of volume conductivity of aluminum alloy, so that the stranded conductor core is like a solid conductor, which significantly reduces the core diameter and improves the conductivity. Under the same current carrying capacity, the conductor is outside The diameter is only 10% larger than copper cable.