Introduction and Application of Enameled Copper Clad Aluminum Wire

Enameled copper clad aluminum wire is a new type of electromagnetic wire that uses copper-clad aluminum material as the inner conductor. It combines the excellent conductivity of copper with the lightweight characteristics of aluminum. Below is a detailed introduction to enameled copper clad aluminum wire and its application areas:

Basic Information on Enameled Copper Clad Aluminum Wire

Enameled copper clad aluminum wire is a composite material composed of an outer layer of copper and an inner core of aluminum, commonly referred to as copper-clad aluminum wire. This material was first introduced by Germany in the 1930s and has been promoted and applied in many countries. The manufacturing process of copper-clad aluminum wire mainly involves coating welding technology, where a high-quality copper strip is concentrically coated on the outer surface of an aluminum core wire, forming a strong metallurgical bond.

Advantages of Enameled Copper Clad Aluminum Wire

DC Resistivity

The DC resistivity of copper clad aluminum wire is about 1.45 to 1.5 times that of pure copper wire; with the same resistance value, the weight of copper-clad aluminum wire is about half that of pure copper wire. This makes copper-clad aluminum wire lighter while maintaining similar resistance characteristics.

Good Solderability

Since the surface of the copper-clad aluminum wire is coated with a layer of pure copper, it has the same solderability as pure copper wire, requiring no special treatment like aluminum wire.

Lightweight

The density of copper-clad aluminum wire is 1/2.5 to 1/3 that of pure copper wire of the same diameter, effectively reducing the weight of the coil. Using copper-clad aluminum wire instead of copper wire can save more than 30% of the cost.

High-Frequency Transmission Performance

When transmitting high-frequency signals, the conduction performance of copper-clad aluminum wire is the same as that of pure copper wire. This is because the "skin effect" of high-frequency signals makes the current primarily concentrated on the conductor's surface, and the surface of copper-clad aluminum material is a high-precision A2 copper layer, showing significant advantages in high-frequency transmission. Winding wire suppliers recognize these benefits and often recommend copper-clad aluminum wire for applications requiring efficient high-frequency signal transmission.

Corrosion Resistance

Due to the complete metallurgical formation, aluminum is covered by copper in copper-clad aluminum wire, and it does not come into contact with water vapor, air, or salt fog, achieving the same corrosion and oxidation resistance as copper.

Application Areas of Enameled Copper Clad Aluminum Wire

Enameled copper clad aluminum wire is widely used in the following areas:

Power Transformers

Various large, medium, and small power transformers, machine tool transformers, equipment transformers, chargers, rectifiers, etc.

Electromagnetic Induction Coils

Various magnetic core coils, induction cooker coils, etc.

Motors

Including household motors, various micro motors, compressors, and other motors with high environmental requirements.

Special Electromagnetic Wire

Used for special electromagnetic wires in speaker coils and optical drive coils.

Display Deflection Coils

Electromagnetic wires used in display deflection coils.

Degaussing Coils

Electromagnetic wires used in degaussing coils.

Micro Motor Rotor Coils

As well as other special electromagnetic wires, such as internal coils for mobile phones, watch drive components, etc.

Due to its unique performance and cost-effectiveness, enameled copper clad aluminum wire plays an increasingly important role in modern electronic and electrical products. With technological advancements, the application areas of enameled copper clad aluminum wire are also continuously expanding, providing more choices and possibilities for the industrial and electronics industries.