We all know that steel is most afraid of rust and corrosion, there are many important building materials in our lives, which is more steel, if the daily maintenance is improper, it is easy to make it corroded. .
1, industrial gases contain SO2, CO2, NO2, CI2, H2S and NH3, etc. Although the content of these components is small, the corrosion damage to Yantai steel can not be ignored, of which SO2 has the greatest impact, it can make the metal surface passivation film destroyed. These gases dissolve in water and become acidic, forming acid rain and corroding metal facilities.
2, the steel structure in the atmospheric environment is affected by the sun, wind, sand, rain and snow, frost and temperature and humidity changes throughout the year, among which the oxygen and moisture in the atmosphere are important factors causing the corrosion of outdoor Yantai steel.
3, the Marine atmosphere is characterized by a large amount of salt, mainly NaCI, salt particles settling on the metal surface, because it has moisture absorption and increase the conductive effect of liquid film on the surface, while CI ion itself has a strong erosion, thus aggravating the corrosion of the metal surface. The closer to the coast, the more serious the corrosion of Yantai steel, its corrosion rate is many times higher than in the inland atmosphere.