Copper-clad steel stranded wire is made of a certain number of copper-clad steel single wires. As the name suggests, copper-clad steel is a copper-clad steel wire, so it is a composite wire with a copper layer wrapped around the steel wire. It uses the skin effect of low-voltage and high-frequency signals to walk along the surface in the high-frequency area, so as long as the thickness of the copper layer reaches a certain range, Signals in a certain frequency range can be guaranteed to be transmitted. Copper plays a role in conducting weak electrical signals, while steel wire plays a supporting role. According to the different methods of wrapping copper to steel wire, it is mainly divided into electroplating, cladding, hot casting/immersion and electroforming. This product combines the strength and toughness of steel with the good electrical conductivity and corrosion resistance of copper. Compared with copper single wire, it has the advantages of low density, high strength and low cost. It is a new generation product of traditional pure copper single wire. Copper-clad steel strands, copper-clad steel strands, and copper-plated steel strands are made of a certain number of copper-clad steel single wires. The products can be used in general humid environments, saline-alkali, and acidic soils that produce chemically corrosive media. It is a horizontal grounding body that has higher requirements for working grounding, protective grounding, lightning protection grounding, and anti-static grounding in special environments. As the name suggests, copper-clad steel is a copper-coated steel wire, so it is a composite wire with a copper layer wrapped around the steel wire. This product has the strength and toughness of steel as well as the good conductivity and corrosion resistance of copper. Compared with copper single wire, it has the advantages of low density, high strength and low cost. It is a new generation product of traditional pure copper single wire.
Advantages of copper-clad steel stranded wire compared with pure copper stranded wire
1. The attenuation of copper-clad steel stranded wire at high frequencies is less than that of pure copper stranded wires. The transmission loss at high frequencies is small and the transmission efficiency is high. The electrical performance indicators meet the needs of the system, including attenuation, return loss, characteristic impedance and other performance indicators. No less than pure copper core cable; 2. Under the same cross-section and condition, the mechanical strength of copper-clad steel stranded wire is twice that of solid copper stranded wire, and it can withstand large impacts and loads. It has higher performance when used in places with harsh environments and frequent movements. Excellent reliability and fatigue resistance, long service life; 3. Copper-clad steel stranded wire can be made into cables with different conductivities and tensile strengths, and its properties include almost all the mechanical and electrical properties of copper alloys; 4. Copper-clad steel stranded wire replaces copper with steel, which reduces the cost of wires and greatly reduces copper consumption, which meets the needs of a resource-saving society. Under the current situation of sharp rise in copper prices, the price of pure copper cables continues to rise. Make copper-clad steel strands reduce construction costs.
Characteristics of copper-clad steel strands
Based on the principle of skin effect, its electrical conductivity is equivalent to that of pure copper wire, and its good magnetic conductivity facilitates the transmission and diffusion of lightning current. Light weight, high strength and easy installation. Using special heat treatment, it can be made into a soft state, large length, and a large number of straight-line connection points. Made by horizontal continuous casting process, metallurgical melting and casting are molecularly combined, with long service life.
Application fields of copper-clad steel strand
1. Military covered wire conductor; 2. Electric power industry grounding rod; 3. Braided shielded wire of power cable; 4. Connectors for various electronic components; 5. Reinforced conductive core of special cables; 6. Overhead lines for power transmission and telephone lines; 7. Conductors of parallel two-core telephone subscriber communication lines; 8. Load-bearing cables and trolley lines for electrified railways and rail transit lines; 9. Inner conductor materials of coaxial cables for cable TV subscriber lines and household lines; 10. Inner conductor materials for computer LAN, access network cables, and outdoor cables.
