Railroad Nail Corrosion Factors
- Passenger Feces and Waste Water
Modern trains often have lavatories draining directly onto the tracks, introducing organic substances, microorganisms, bacteria, sulfur, chlorine compounds, and inorganic salts that create an electrolyte solution for corrosion.
- Atmospheric Corrosion
Sulfur and sulfide in the atmosphere, worsened by pollution from nearby chemical plants, can cause acidic rainfall that adheres to the spike surface and promotes corrosion. Higher humidity levels increase the likelihood of corrosion.
- Temperature Variation
Fluctuating temperatures lead to the formation of water vapor on the spike surface, accelerating corrosion when condensation occurs due to temperature changes between day and night, or seasons.
- External Environment
Freight trains often deposit chemical raw materials, minerals, and carbon particles onto the tracks, which, coupled with the composition of Q235 carbon structural steel in the spike, can initiate corrosion reactions.
- Climate Change
Industrial activities and climate change contribute to rising temperatures and environmental degradation, placing greater demands on product standards to prevent corrosion of easily affected steel products like railroad nails.