Surface treatment technology, the surface treatment of heavy rails is mainly to improve their corrosion resistance and wear resistance. Common surface treatment methods include spraying anti-corrosion coatings, hot-dip galvanizing, etc. Spraying anti-corrosion coatings is to spray a layer of coating with good anti-corrosion properties on the surface of heavy rails to form a protective film to prevent the heavy rails from being corroded by the external environment. Hot-dip galvanizing is to immerse the heavy rails in molten zinc liquid to form a uniform and dense zinc layer on the surface of the heavy rails. The zinc layer not only has good anti-corrosion properties, but also improves the wear resistance of the heavy rails.
Surface treatment can effectively extend the service life of heavy rails, especially in some harsh environmental conditions, such as humid, saline and alkali areas. The surface-treated heavy rails can better resist corrosion and wear, ensuring the safety and reliability of railway tracks.