Municipal Anti Theft MS Driveway Drain Grate Metal Steel Grating

Overview of anti-theft ditch cover plate

Considering from the perspective of coating, the anti-theft ditch cover plate needs phosphating before coating in order to improve the binding force because the binding force between the substrate and the coating is not very high. This is also the reason why the galvanized steel grating needs phosphating.

The phosphating process steps of anti-theft ditch cover plate

alkaline degreasing agent → normal temperature water washing → surface conditioning → low temperature phosphating → normal temperature water washing → drying → coating.

After these steps, the phosphating treatment of galvanized sheet is basically completed.

Tell me about the influence of the composition of phosphating solution on the performance of phosphating film.
Anti theft ditch cover plate PO3-4: the appropriate concentration is 5-50g / L, lower than 5g / L, and the density of phosphating film is uneven, higher than 50g / L, which is not beneficial to the formation of phosphating film and causes waste of raw materials.
The anti-theft ditch cover plate will be damaged after being used for a long time. If you want to prevent the anti-theft ditch cover plate from being damaged as much as possible, you should maintain the anti-theft ditch cover plate at ordinary times. The maintenance of outdoor anti-theft ditch cover plate generally refers to anti-corrosion, anti-corrosion, fire prevention, etc. The service life of antirust paint is always limited, and galvanizing will be better, especially when the steel members are closed and cannot be maintained. Galvanizing is divided into electroplating and hot plating. The former is cheap, but the galvanized layer is thin and the anti rust life is short, but it is longer than that of anti rust paint; The latter is a good choice. The hot-dip galvanized layer is thick and the antirust effect is very good. However, we should pay attention to the deformation of components under the high temperature of 600 ℃, and the price is too expensive. The high price is aluminum zinc plating, and the antirust effect is also good. Others include aluminum plating and galvanized aluminum, but they are not the mainstream. So how to specify the maintenance period? Protection life of galvanizing = weight of galvanizing layer per square meter / grams of corrosion per year. Although the galvanizing is durable, we should pay attention not to damage it during construction. If the cover plate component of the anti-theft ditch is too large to read the heart, we can use hot spraying aluminum or hot spraying zinc. We should find these problems in time and solve them properly.