Method for preventing rust and reducing grounding resistivity for lightning protection grounding body
A technology of grounding resistance and lightning protection grounding, which is applied in the direction of contact manufacturing and connecting contact materials, etc., can solve the problems of single anti-corrosion metal protective material layer, waste of land, materials, unstable grounding resistance, etc., and achieve good combination , Easy to transport, stable grounding resistance
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Embodiment 1
[0014] Under normal temperature and pressure, take a round steel with a diameter of φ12mm and a length of 2500mm, plate the surface of the round steel with a 0.20mm thick copper layer according to the traditional electroplating method, and then plate a 0.20mm thick nickel layer on the copper surface to obtain an anti-corrosion Corroded alloy rods; put the alloy rods into the braiding machine under normal temperature and pressure, weave a layer of conductive graphite wire sleeves with a thickness of 5mm and a carbon content of more than 99.8% on the surface, and then put the alloy rods with wire sleeves into Squeeze and flatten the patterns and gaps of the line sleeve with 20kg of extrusion force in the extrusion troweling machine, eliminate the reactance generated by the patterns, reduce the resistance to 0.25Ω.m, and prepare the resistance-reducing layer of graphite conductive material; Under normal temperature and pressure, 10kg of coating-grade polyvinyl alcohol powder and 9...
Embodiment 2
[0016] Technological process is with embodiment 1. Copper 0.12mm and nickel 0.12mm on the steel surface to obtain an anti-corrosion layer; take a graphite wire sleeve with a carbon content of 90%, and squeeze the graphite wire sleeve to 8kg to obtain a graphite resistance-reducing layer in the longitudinal conductive direction; take The carbon content is 90%, the number of meshes is 100 mesh graphite phosphorus flake powder, polyvinyl alcohol powder 8kg, and water 90kg to prepare conductive resistance-reducing cement. The service life of the product prepared by this method is only 18 years, and the water retention is low. Difference.
Embodiment 3
[0018] Technological process is with embodiment 1. Copper 0.25mm on steel surface, nickel 0.25mm to make anti-corrosion layer; graphite wire sleeve with 95% carbon content, extrusion force to graphite wire sleeve is 10kg, make longitudinal conductive direction resistance-reducing layer; take carbon content as 95%, the mesh number is 80 mesh graphite phosphorus flake powder, polyvinyl alcohol powder 9kg, and water 11kg makes conductive resistance-reducing cement. The service life of the product made by this method is 20 years, and the grounding resistance is reduced, which cannot reach the 0.25Ω index requirement.
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