Because the
copper-clad steel grounding rod forms a strong film on the surface of the dipped zinc-coated steel, the external electrolyte solution will not be able to penetrate into the surface of the zinc layer inside the coating, and the service life of the dipped-zinc grounded steel is greatly improved. Extended, the conductivity, anti-corrosion, impact resistance and thermal stability of the grounded steel are enhanced. Nano-materials and film-forming materials penetrate each other with particle sizes of almost the same order of magnitude, and there is no obvious interface with each other. The reason why the copper-clad steel grounding rod device is prone to corrosion is that the corrosion of the steel body in the soil is mainly electrochemical corrosion, that is, anode dissolution. For this reason, many domestic units are carrying out research in this area and have proposed many anti-corrosion measures. The main reasons for many grounding device expansion accidents inside and outside the power grid are: the heat capacity of the grounding device is seriously insufficient, some are caused by corrosion, and some are caused by improper design and construction; the accidents of the grounding device last for a long time, and the protection cannot be removed quickly, which provides a source of trouble for the accident. time conditions.