Steel itself is a very high quality product, mainly because the galvanized angle steel does not naturally respond to all kinds of pollution in the environment, so it needs a layer of protective film to protect the material. The galvanized layer of the galvanized angle steel is formed by three steps of zinc in the high temperature liquid.
The channel steel after derusting is immersed in molten zinc at about 440~460 degrees, and the iron base surface is dissolved by zinc solution to form a zinc ferroalloy phase.
2. The zinc ions in the alloy layer further diffuse to the matrix to form a zinc iron miscible layer.
3, the surface of the alloy layer is covered with zinc layer.
Hot dip galvanizing is a very good method for the galvanizing of galvanized steel in Ji'nan. It is in the state of zinc liquid, after a fairly complex physical and chemical action, it is not only plated with a thick zinc layer on the steel, but also a zinc iron alloy layer. It has a zinc - iron alloy layer. It also has a strong corrosion resistance which can not be compared with that of zinc plating. Therefore, this plating method is especially suitable for strong corrosive environments such as strong acids and alkali fogs.
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