Hot-dip galvanized steel since its inception is widely used in construction, home appliances and other major industries. Due to the continuous expansion of the scope of use, the product of the steel sheet of the formability and various types of performance is constantly improving, and thus the consequent emergence of some of the performance is superior to the hot-dip galvanized steel aluminum zinc-plated steel sheet. Aluminum-zinc plated steel sheet is an AL-Zn coated aluminum-zinc plated steel sheet obtained by hot-dip plating using cold rolled hardened steel sheets of various strengths and thicknesses as the base material. Dalian galvanized rolled steel plate is in the steel plate surface aluminum-zinc alloy covering treatment, by 55% aluminum, 43.4% zinc and 1.6% silicon solidified at a high temperature of 600 ℃ and composed of the entire structure of the aluminum - iron - silicon - zinc, the formation of dense quaternary crystals of a kind of alloy coated steel plate.
Advantages of aluminum zinc plated steel?
1, corrosion resistance
Zinc is chemically active, in the air at room temperature, the surface generates a layer of thin and dense alkaline zinc carbonate film, which can prevent further oxidation, and aluminum in the air, can form a layer of insoluble oxides, in which the barrier protection function; test in the same thickness, plating, surface treatment of hot-dip galvanized steel sheet and aluminum zinc-plated steel sheet under the premise. Aluminum zinc plating than hot-dip galvanizing has excellent corrosion resistance, service life is ordinary galvanized steel 2-6 times.
2, heat resistance
Ordinary hot-dip galvanized products are usually used at temperatures not exceeding 230 degrees Celsius, 250 degrees Celsius will be discolored, while aluminum zinc plated sheet can be used for a long time at 315 degrees Celsius without discoloration.
3、Heat reflection
The ability of zinc aluminized to reflect heat and light is 2 times that of galvanized steel, with a reflectivity of more than 0.70, which is better than the 0.65 stipulated by the EPA Energy Star (U.S. Environmental Protection Agency Energy Star).
4. Mechanical Properties
Mechanical properties of zinc-aluminum-plated steel sheet is mainly manifested in the yield strength, tensile strength, elongation. Ordinary DC51D grade 150 g / square of galvanized steel, generally between 140-300mpa yield strength, tensile strength between 200-330, elongation between 13-25. And grade DC51D + AZ aluminum zinc 150 g / square of aluminum zinc plated steel yield strength between 230-400mpa, tensile strength between 230-550, elongation track between 15-45.
GNEE galvanized coil
5, economy
Because the density of 55% AL-Zn is smaller than that of Zn, so in the case of the same weight and the same thickness of the plating layer, the area of Aluminum Zinc Plated Steel Sheet is more than 3% larger than that of Galvanized Steel Sheet.
Application Scenario of Aluminum Zinc Plated Light Sheet?
Construction: roofs, garages, walls, pipes and modular houses, etc.
Automobile: muffler, exhaust pipe, wiper attachment, fuel tank, truck box, etc.
Home Appliances: refrigerator backsheet, gas stove, air conditioner, electronic microwave oven, LCD bezel, CRT explosion-proof belt, LED backlight, electrical cabinet, etc.
Agricultural: pigsties, chicken coops, grain bins, pipes for greenhouses, etc.
Others: heat-break insulation cover, heat exchanger, dryer, water warmer, etc.
Precautions for use：
Storage: It should be stored indoor in the warehouse, keep dry and ventilated, do not leave it in the acidic climate for a long time. Outdoor storage should be prevented from rain, to avoid condensation caused by oxidative discoloration.
Transportation: Avoid external impact, use SKID to support the steel coil on the transportation tool, reduce stacking, and take good rainproof measures.
Processing: Use the same lubricant as used for aluminum sheets when shearing. When drilling or cutting aluminum-zinc-plated steel plate, remove the scattered iron chips in time.
