Solar power stations require a 25-year service life. Fasteners exposed to outdoor environments face ultraviolet aging, rain erosion, temperature difference and salt spray corrosion. Scientific anti-corrosion selection, standard construction and periodic maintenance are essential to avoid structural deformation and safety risks.
UV radiation causes coating pulverization and failure. Rainwater forms conductive water film and triggers galvanic corrosion. Salt fog and industrial acid penetrate coating pores and cause internal rust diffusion.
Hot-dip galvanizing provides cost-effective long-term protection for inland power stations. Dacromet coating adapts to humid and industrial areas. Zinc-nickel alloy and stainless steel are the best choice for coastal high-corrosion environments.
Avoid coating damage during installation. Repair scratched positions in time. Ensure consistent material and coating for all matching fasteners to prevent galvanic corrosion.
Implement regular inspection according to regional corrosion level. Repair slight oxidation and replace severely corroded fasteners to protect the overall stent structure and guarantee 25-year stable operation.