Alloy cable compared to the advantages of ordinary cable

1, the conductivity: the conductivity of aluminum alloy is the most commonly used reference material copper IACS 61.5%, carrying capacity is 79% of copper, better than pure aluminum standards.

2, creep resistance: aluminum alloy conductor alloy material and annealing process reduces the conductor in the heat and pressure under the "creep" tendency, relative to pure aluminum, creep resistance increased by 300%, to avoid the cold flow Or creep caused by the relaxation problem.

3, Tensile strength and elongation: Compared to pure aluminum conductor aluminum conductor, due to the addition of a special composition and the use of a special processing technology, greatly improving the tensile strength, and the elongation increased to 30% Use more safe and reliable.

4, thermal expansion coefficient: thermal expansion coefficient used to calculate the temperature changes in the material size changes. Aluminum alloys have a coefficient of thermal expansion comparable to that of copper, and for many years aluminum connectors have been used reliably for copper and aluminum conductors, and most of today's electrical connectors are made of aluminum, which is especially suitable for aluminum alloys. Therefore, aluminum alloy conductor and connector expansion and contraction exactly the same.

5, self-weight bearing capacity Aluminum alloy to improve the tensile strength of pure aluminum, aluminum alloy cable can support 4,000 meters in length, copper cable can only support 2750 meters. This advantage is particularly evident when wiring long-span buildings such as stadiums.

6, anti-corrosion properties of aluminum inherent anticorrosion edge since the aluminum surface when in contact with air to form a thin and strong oxide layer, this oxide layer is particularly resistant to all forms of corrosion. The addition of rare earth elements in the alloy can further improve the corrosion resistance of aluminum alloys, especially electrochemical corrosion. The ability of aluminum to withstand harsh environments makes it widely used as a conductor in tray cables, as well as many industrial components and containers. Corrosion is usually related to the connection of different metals in a damp environment. Appropriate protection measures can be taken to prevent corrosion, such as the use of lubricants, antioxidants and protective coatings. Alkaline soils and certain types of acidic soil environments are highly corrosive to aluminum, so direct laying aluminum conductors should be insulated or molded to prevent corrosion. In sulfur-containing environments, such as railway tunnels and the like, the corrosion resistance of aluminum alloys is much better than that of copper.

7, flexible aluminum alloy has good bending properties, its unique alloy formula, processing technology, so that a substantial increase in flexibility. Aluminum is 30% more flexible than copper and 40% less resilient than copper. Generally, the bending radius of copper cables is 10 to 20 times the outside diameter, while the bending radius of aluminum alloy cables is only 7 times the outside diameter, making it easier to connect the terminals.

8, armor characteristics Domestic commonly used armored cable, most of the steel armor, low security level, the destructive force by the outside world, its resistance to poor, easily lead to breakdown, and weight, the installation cost is very high, coupled with Corrosion resistance is poor, the service life is not long. And we developed according to the United States standard metal chain armored cable, using aluminum alloy with chain armor, the chain structure between the layers to ensure that the cable can withstand strong destructive power, even if the cable subjected to greater pressure And impact, the cable is not easy to breakdown, improve safety performance. At the same time armored structure to isolate the cable and the outside world, even in a fire, the armor layer to improve the flame retardant fire resistance level, reducing the risk of fire hazard. Aluminum alloy armored structure with respect to the steel armor, light weight, convenient laying, free bridge installation, can reduce the installation costs of 20% to 40%. Depending on the use of different locations can choose a different outer jacket layer, the use of armored cable more widely.

9, the squeeze characteristics alone Considering the volume conductivity of aluminum alloy less than copper, but we developed the conductor not only made improvements in material properties, but also made major breakthroughs in technology, we use ultra-conventional compression technology , So that the compression coefficient of 0.93, while the profile of the compression coefficient can reach 0.95, is the first in China. Through the maximum limit of compression, can make up for lack of volume conductivity of aluminum alloy, so stranded conductors solid core conductor in general, significantly reduce the core diameter, improve conductivity, the same current carrying capacity outside the conductor The diameter is only 10% larger than the copper cable. (Gold and)