30 ~ 35% aluminized zinc steel plate is used for painted ceilings, walls and other aspects of buildings. In addition to being the trademark of BIEC, aluminum-zinc plated steel plates are also registered by BIEC and licensed for the following products:
zinkosite
Zinc aluminate
Zinc-aluminum-gallium alum
The surface of aluminum-zinc plated steel plate is characterized by smooth, flat and gorgeous stars, and the primary color is silvery white. Special coating structure makes it have excellent corrosion resistance. The normal service life of galvanized aluminum sheet can reach 25 years, with good heat resistance, and it can be used in high temperature environment of 3 15℃. The coating has good adhesion to paint film and good processability, and can be punched, cut and welded. Good surface conductivity.
The coating consists of 55% aluminum, 43.4% zinc and 65,438+0.6% silicon. The production process of aluminized zinc steel plate is similar to galvanized rigid plate and aluminized steel plate, and it is a continuous cladding process. The aluminum-zinc plated steel plate with 55% aluminum-zinc alloy coating has better corrosion resistance than the galvanized steel plate with the same thickness when both sides are exposed to the same environment. The aluminized zinc steel plate with 55% Al-Zn alloy coating not only has good corrosion resistance, but also has excellent adhesion and flexibility.
Selection of aluminum-zinc plated steel plate;
Because the steel plate will be oxidized and rusted when it is wet, it is necessary to add a layer of anti-corrosion protection on the surface. General anticorrosive coatings are divided into hot-dip galvanized and hot-dip aluminized zinc alloy Al-Zn (Al-Zn alloy consists of 53% Al, 43.5% Zn and 1.5% Si, abbreviated as 55%Al-Zn). The data show that the comprehensive corrosion resistance of 55% Al-Zn coating is four times that of zinc plating with the same thickness.
According to foreign experience, the anticorrosion coating on the base material of general profiled steel plate (pit plate) should not be less than 350g/㎡(Z35) or 185 g/㎡(AZ 185) hot-dip galvanized aluminum and zinc.
However, the minimum zinc/zinc coating specification for cold-rolled steel and floor of building structure is 275 g/㎡(Z27), and the exposed part along the coast is required to be 350g/㎡(Z35).
Application of aluminized zinc plate;
Buildings: roofs, walls, garages, sound insulation walls, pipes and modular houses, etc.
Automobile: muffler, exhaust pipe, wiper accessories, oil tank, truck box, etc.
Household appliances: refrigerator backboard, gas stove, air conditioner, electronic microwave oven, LCD frame, CRT explosion-proof belt, LED backlight, electric control cabinet, etc. Agriculture: pigsty, henhouse, granary, greenhouse pipeline, etc.
Others: insulation cover, heat exchanger, dryer, water heater, etc.
References:
Iron and steel e station communication
Are you asking about aluminum-zinc plated steel plates? No, I'm looking for it at the steel e station.