Introduction to the basic principles of copper clad aluminum

Copper-clad aluminum is an emerging material. Its existence principle is based on the skin principle of electrons. Copper is electroplated or attached to the surface of aluminum, basically from 7% to 34% copper or higher. It ’s because of the lack of talents. The practical significance of copper-clad copper is that copper-clad aluminum is definitely higher in terms of cost-effectiveness. However, copper-clad aluminum is temporarily used in coils of various audio equipment, communication equipment, etc. However, if you are doing power equipment, copper clad aluminum can replace pure copper cables, such as transformer coils and non-standard cables, etc., regardless of the national standard. Finally, a few nonsense, high copper content The price of copper-clad aluminum wire and oxygen-free copper is almost the same. The practical significance of using it is that its density is relatively small. Therefore, with the same number of turns, it has lower weight and lower cost, but also because of its low density. When used, the things made will naturally be larger than the national standard.

Copper-clad copper, which is brass-plated copper, has a lower price than oxygen-free copper. Some manufacturers want to save costs and continue to use copper wires. Copper-clad copper is an ideal choice; copper-clad aluminum is mainly used in high- For frequency cables (RF cables), current power cables are also useful. As everyone knows, copper-clad aluminum has a low density and a long length. It can save more than 30% of the cost by replacing pure copper. Of course, resistivity and conductivity are better with copper wires. The specific choice depends on the customer's choice.

Characteristics of copper-clad aluminum:

1. DC resistivity: The DC resistivity of copper-clad aluminum wire is about 1.5 times that of pure copper wire. When the resistance value is the same, the weight of copper-clad aluminum wire is about 12 times that of pure copper wire. According to the "skin effect" calculation, at high frequencies above 5MHZ, the resistivity is the same as that of pure copper wire. Therefore, when it is used for digital cables and high-frequency signal cables, its electrical performance is the same as that of pure copper wires.

2. Compared with pure copper wire, copper clad aluminum wire is not valuable to a thief, because it is almost impossible to separate the pure copper coating from the aluminum core wire. Therefore, an additional anti-theft effect can be received.

3. The copper clad aluminum wire is light in weight and convenient for transportation and installation. Therefore, labor costs can also be reduced.

4. It is more malleable than copper wire and does not generate insulating oxides like aluminum, so it is easier to process. And better conductivity.

5. The product is processed by the international leading "cover welding drawing method" production process. Even in the strict twisting test, it will not appear detachment, cracking or peeling like electroplated products. No harm.