Overhead conductors of corrosion and corrosion mechanism

Various wires of overhead power lines, especially set up wires in coastal and industrial areas, through the atmosphere, for a long time. Wind and rain, and the erosion of salt fog, are very susceptible to corrosion.  

Due to the chloride ion radius being very small, the atmosphere is free to wear. Through the water film on the surface of the metal and passivation membrane (metal compounds, the structure is tight, cover the metal surface), exclude oxygen ions and instead, become soluble chloride, accelerated corrosion to metal. 

Atmospheric SO2, H2S, NH3, and NO2, as well as other suspended particles and dust, are also can promote metal corrosion. After corrosion to metal surface defects, lead to stress concentration. And promotes corrosion, and stress corrosion, and accelerates the expansion of the surface defects, decreasing the ability to resist fatigue, so as to greatly reduce the service life of the wire.

In order to prevent corrosion of the wire, at present the main methods in galvanized or aluminized steel core wire. Or in the guide. Wire stranding process, the stock line is coated with an anticorrosive coating, made of anticorrosive aluminum stranded wire, a light in the anti-corrosion, anti-corrosion and heavy Corruption three, can be used for different corrosive areas respectively, in order to improve its service life. 

Anticorrosive coatings should be good Stability and adhesion, drop point should be no less than 110 ℃. Also, improve the chemical grade of aluminum wire and wire surface quality. The amount is also an effective way to improve the corrosion resistance of the conductor.

ZMS cable company's overhead cable can achieve the maximum strength of resistance to corrosion, quality service can be trusted.