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Copper-clad steel stranded wire is more and more widely used, but many people don't understand why copper-clad steel stranded wire is so popular. Let's get to know it together!


1. The unique manufacturing process of copper clad steel strand

The horizontal continuous casting production process is adopted. The continuous casting process adopts the process of heating the electrolytic copper to 1200℃ to form an alloyed over-plating layer on the copper bonding surface, and the bimetallic interface is completely firmly bonded, thereby achieving a ductile metallurgical fusion between copper and steel, forming a single composite body, which can be drawn arbitrarily like a single metal, without disjointing, peeling, or cracking.


2. Copper clad steel stranded wire has better anti-corrosion properties

No residue inside the bimetal with better corrosion resistance. The horizontal continuous casting process uses high-temperature melting, and the residue is calcined and overflows the copper surface, and will not remain in the copper clad rigid conductor, so there will be no corrosion inside. The use of flat steel or building foundation as the grounding body affects the reliability of the grounding device due to poor corrosion resistance.


Using galvanized angle steel (round steel) as the grounding body, although it slows down the corrosion of steel, but because zinc is more active than steel, the corrosion rate of zinc is faster than steel. Because the galvanized layer is connected to the soil, it is constantly corroding, then the stability is poor, and the service life is short (generally less than 5 years). The resistance value of the resistance needs to be tested every year, and the workload is large.


Copper-clad metal composite materials are used as grounding bodies and lightning protection conductors. Due to the poor metal activity of copper, it generally does not react with acids, alkalis, and salts. According to the skin effect, when the surface copper layer is greater than 0.25mm, the steel core carries very little current. The strength of steel is used to send the copper conductor underground, and the surface copper conductor is sent underground. The surface copper layer will not corrode, so it is grounded. The rod resistance will not change over time, it can be maintenance-free, and the life span is generally up to 50 years.


3. Copper clad steel stranded wire has better electrical performance

The surface layer of the copper-clad steel stranded wire is oxygen-free copper, which has good conductivity, and the inner layer is high-quality carbon steel. The skin effect principle is conductive and the magnetic conductivity is excellent. The electrical resistance is much lower than conventional materials such as steel and galvanized steel. The surface layer is oxygen-free copper.


4. Low price of copper-clad steel stranded wire

Because its anti-corrosion ability, electrical performance, tensile strength and other properties are completely equivalent to pure copper products, it can directly replace pure copper conductors. Compared with pure copper grounding conductors, the price is low, saving a lot of money for engineering projects.


5. Convenient installation of copper-clad steel stranded wire

Horizontal continuous casting copper-clad steel grounding products are welded with exothermic flux. The joints are firm, stable, easy to use, and can meet the low resistance requirements of special occasions.