3 ~ 35% of aluminum-zinc plated steel plates are used in ceilings, walls and other aspects of buildings after being painted. Besides being a trademark of BIEC company, the galvanized steel plate is also registered and licensed by BIEC company with the following products:
Cincalum Zalute Algafort Zinc-Alum
Alucic Zincalit Alzink Zinccalume
Cincalum Zintro-Alum Galvalume
The surface of galvanized steel plate is characterized by smooth, flat and gorgeous stars, and the primary color is silver. The special coating structure makes it have excellent corrosion resistance. The normal service life of zinc-plated aluminum plate can reach 25 years, and it has good heat resistance and can be used in high temperature environment of 315℃. The coating has good adhesion to the paint film and good processability, and can be punched, cut and welded. The surface conductivity is good.
The composition of the coating is composed of 55% aluminum, 43.4% zinc and 1.6% silicon, respectively. The production process of aluminum-zinc plated steel plate is similar to that of galvanized rigid plate and aluminum plated plate, and it is a continuous melting coating 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 aluminum-zinc plated steel plate with 55% aluminum-zinc 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 gets wet, it is necessary to add an anti-corrosion protective layer on the surface. Generally, the anti-corrosion coatings are divided into hot-dip galvanized zinc and hot-dip aluminized zinc alloy Al-Zn (Al-Zn alloy consists of 53% aluminum, 43.5% zinc and 1.5% silicon, abbreviated as 55%Al-Zn). The data show that the comprehensive corrosion resistance of 55% aluminum-zinc plating is four times that of the same thickness zinc plating.
according to foreign experience specifications, the anti-corrosion coating on the base material of general profiled steel plate (pit plate) should be no less than 35g/㎡(Z35) or 185 g/㎡(AZ185)
, and the minimum Zinc/Galvanizing coating for cold-rolled steel and floor slab of building structure is 275 g/㎡(Z27).
application of galvanized aluminum sheet:
buildings: roofs, walls, garages, sound-proof walls, pipes and modular houses, etc.
automobiles: silencers, exhaust pipes, wiper accessories, fuel tanks, truck boxes, etc.
household appliances: refrigerator backboards, gas stoves, air conditioners, electronic microwave ovens, LCD frames, CRT explosion-proof belts, LED backlights, etc. Heat exchangers, dryers, water heaters, etc.
References:
Steel-iron e-station communication
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