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what is Aluzinc sheet coil
Aluzinc sheet coil is an alloy coated steel sheet widely used in many fields such as building materials, home appliances, automobiles, environment, machinery, and ships. The galvanized steel sheet is composed of aluminum-zinc alloy covering on the surface of the steel sheet, which is composed of 55% aluminum, 43.4% zinc and 1.6% silicon solidified at 600°C. The whole structure is formed by aluminum-iron-silicon-zinc. An alloy-coated steel sheet of quaternary crystal.
1. Heat reflective:
Aluminized galvanized steel sheets have a high heat reflectivity, which is twice that of galvanized steel sheets, which are often used as insulation materials.
2. Heat resistance:
The aluminum-zinc alloy steel plate has good heat resistance and can withstand temperatures of more than 300 degrees Celsius. It is similar to the high temperature oxidation resistance of aluminum-plated steel sheets, and is often used in chimney tubes, ovens, illuminators and fluorescent lamps. Corrosion resistance:
The corrosion resistance of galvanized steel coils is mainly due to the protective function of aluminum and aluminum. When the zinc is worn, the aluminum forms a layer of dense alumina that prevents the corrosion-resistant material from further corroding the interior.
Since the density of 55% of AL-Zn is smaller than the density of Zn, the aluminum-zinc-plated steel sheet is larger than the area of the plated steel sheet by 3% or more in the case where the weight is the same as that of the gold-plated layer.
4. Easy to paint
Excellent adhesion between galvanized sheet and paint, lacquered without pretreatment and weathering.
The coating of the gold-plated zinc-plated steel plate has excellent adhesion, so it can be directly coated on the advertising board and the general board without pre-treatment such as Weathering.
5. Aluminized zinc plated steel has a silvery white ornate surface.
6. Galvanized steel sheets have similar processing properties and sprayability to galvanized steel sheets.
Buildings: roofs, walls, garages, soundproof walls, pipes and modular houses, etc.
Automobiles: muffler, exhaust pipe, wiper attachment, fuel tank, truck box, etc.
Home appliances: refrigerator backboard, gas stove, air conditioner, electronic microwave oven, LCD frame, CRT explosion-proof belt, LED backlight, electrical cabinet, etc. Agricultural: pig house, chicken house, granary, greenhouse pipe, etc.
Others: Heat insulation cover, heat exchanger, dryer, warmer, etc.
The difference between galvalume steel and galvanized steel
The difference between galvalume steel sheet and galvanized steel sheet:
is mainly due to the difference of coating. The surface of galvanized sheet is evenly distributed with a layer of zinc material, which plays an anode protection role on the base material, that is to say, the alternative corrosion protection of zinc material. The use of the base metal can only damage the base metal inside when the zinc is completely corroded.
The surface coating of the galvalume sheet is composed of 55% aluminum, 43.5% zinc and a small amount of other elements. The micro-aluminum-zinc-coated surface is a honeycomb structure, and the "honeycomb" composed of aluminum contains zinc. In this case, although the aluminum-zinc-plated coating also functions as an anodic protection, on the one hand, since the zinc content is reduced, on the one hand, since the zinc material is not easily electrolyzed by aluminum, the effect of the anode protection is greatly reduced, so once the aluminum is plated The zinc plate is cut open and will rust quickly if the cut edge is substantially protected. Therefore, the aluminum-zinc plate should be cut as little as possible. Once the edge is cut, anti-rust paint or zinc-rich paint is used to protect the edge. Extended service life of the board
Chromate chromic acid passivation
AFP/Galva clean fingerprint resistant
Non-Gr, Gr-free cadmium-free fingerprint
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