The anti-corrosion treatment of outdoor LED display sheet metal cabinet is the key link to ensure its long-term stable operation and prolong service life.
The following are some suggestions for the anti-corrosion treatment of outdoor LED display sheet metal cabinets, combined with the relevant information in the reference article:
1. Rust removal at the base level:
The base layer of the sheet metal cabinet is thoroughly derusted, e.g. by sandblasting, phosphating, etc., to remove rust and reduce the risk of corrosion.
2. Anti-rust primer treatment:
Use an epoxy zinc-rich primer as an anti-rust primer. This primer has excellent physical and chemical properties, easy coating and good matching, and the main components include epoxy resin, epoxy curing agent, zinc powder, anti-rust pigment, additives and organic solvents.
Epoxy zinc-rich primer is mainly used for rust prevention of steel structures and steel plates, which can effectively protect the base layer of sheet metal cabinets from corrosion.
3. Intermediate Coating Treatment:
Epoxy micaceous iron intermediate paint is used in conjunction with epoxy zinc-rich primer as a transition layer for long-term anti-corrosion coating.
Epoxy micaceous iron intermediate paint can enhance the sealing and anti-corrosion of the composite coating, the coating film is strong, has good adhesion and sealing, and has good compatibility with the front and rear coatings.
4. Surface treatment:
On top of the intermediate coating, epoxy asphalt topcoat, chlorinated rubber topcoat, acrylic and polyurethane topcoat, fluorocarbon topcoat, etc. can be used as the surface layer.
These topcoats can further enhance the corrosion resistance of sheet metal cabinets while beautifying the appearance of the product.
5. New anti-corrosion treatment method:
New treatment methods such as spraying Dilin metal anti-rust wax, such as Dilling 25B, can effectively prevent rust on metal raw materials, and the anti-rust time can reach 3-5 years.
This treatment method is environmentally friendly and safe, does not pollute the environment, has a long anti-corrosion time, can integrate the old and new coatings, and is simple to repair in the later stage.
6. Other Notes:
In the process of anti-corrosion treatment, ensure that the coating is uniform, no leakage, no bubbles and other defects.
According to the use environment and use requirements, select the appropriate anti-corrosion coating and coating thickness.
Regularly inspect and maintain the sheet metal cabinet, and repair the coating damage and rust parts in time.
Through the above anti-corrosion treatment measures, the corrosion resistance of outdoor LED display sheet metal cabinets can be significantly improved, its service life can be prolonged, and the stable operation of LED displays can be ensured.