The difference between galvanized sheet and aluminized […]
The difference between galvanized sheet and aluminized 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 galvanized 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. The life of the board is extended.
The surface of the galvanized sheet is more beautiful than the galvanized sheet, and the price of the galvanized sheet is more expensive than that of the galvanized sheet, and the price of the small zinc flower is more expensive than that of the large zinc flower.In a city with a lot of humid air and rain, once a certain point of galvanized sheet is rusted, if it is not taken in time, the place where the rust will slowly become larger will eventually become larger and even the entire surface; and even if the galvanized sheet is rusted at a certain point, Will not spread.