Stainless steel features
Stainless steel has poor stain resistance. As the oil, dust, acid, alkali, and salt attached to the surface of the workpiece are transformed into corrosive media under certain conditions, they chemically react with certain components in the stainless steel, resulting in chemical corrosion and rust.
Various damages destroying passivation film reduces the protective ability of stainless steel, and is easy to react with chemical media, resulting in chemical corrosion and rust.
Many subway lines at home and abroad use stainless steel car bodies. Due to destruction of the environment , damage during use and maintenance, and contact with iron parts, the car body has been severely corroded and stained.
The Los Angeles Metro requires that all exposed stainless steel surfaces should be coated with a coating that does not yellow over time and is easy to remove dirt and repaint.
In order to solve the problem of non staining resistance and long-term corrosion resistance of the stainless steel car body surface, Lankwitzer has launched a matching coating system with functions of protection, decoration and anti-graffiti.
Coating system : nano transparent primer + nano varnish
◥ Because of high requirements for appearance on the surface of the stainless steel car body, it is not suitable to use destructive pretreatment methods such as sanding and sandblasting on the surface of the substrate. It can only be wiped with a cleaning agent or thinner, which requires high adhesion to the primer. Nano transparent primer has excellent adhesion, water resistance, salt spray resistance and temperature change resistance.
◥ Because the surface coating of stainless steel car body has to withstand wind and sun, various pollutants and cleaning agent corrosion during long-term operation, nano varnish has excellent weather resistance, mechanical properties, chemical resistance and anti-graffiti performance.