Copper clad steel earth rod
is made by covering the steel core with an electrolytic copper molecule of 99.9% purity. Cast copper grounding rod is made of high-quality Q235 low carbon steel and processed by cold drawing with large shrinkage diameter, which overcomes the defect of poor bonding force of casing coating method, enhances the tensile strength and maintains toughness. 99.9% pure copper is plated on the surface, and the thickness of the copper layer is 0.254 mm, 0.33 mm, 0.5 mm, 1.0 mm and so on.
General technical parameters of copper clad steel earth rod. The bonding degree of the copper layer, after adhesion test, except for the clamp bite of the vise, exfoliated copper layer appeared, the other parts of copper and steel bonded well and did not appear exfoliation phenomenon. The grounding rod can be connected according to the required length. The grounding rod can penetrate 30 meters underground and is not affected by any climatic conditions of soil resistivity and grounding resistance. The thickness of the copper layer is 0.25 mm.
Copper layer plasticity: when the grounding rod is bent at 30 degrees, there is no crack in the inner and outer edges of the bending angle; the tensile strength is greater than 600 N/mm2; the flatness error is less than 1 m m/m; and the surface metal of copper clad steel earth rod is 99.9%, oxygen-free copper.
The thickness of the copper layer is 0.127mm, 0.25mm, 0.33mm, 0.50mm, 1.0mm, and other specifications respectively. The copper layer bonding force experiment lasts for more than one hour and then quenches. The copper layer does not peel off. The corrosion resistance test results show that the grounding rod is immersed in a 10% nitric acid solution for more than 90 hours. The corrosion weight loss is not more than 15%, and the resistivity is less than 0.059Ωmm, which meets the special occasion of low resistance. Requirements.