Galvanized channel steel is mainly used in metal structure equipment of various industries. The main purpose of galvanized channel steel is to immerse the rusted steel parts in the melting zinc solution at 440 ~ 460 (?) C, so that the surface of steel components is attached with zinc layer, thus playing the purpose of anti-corrosion. This is an effective way of metal anticorrosion. Its application characteristics are as follows:
(1) Thicker and dense pure zinc layer is concealed on the surface of steel, which can prevent the contact between the steel matrix and any corrosion solution, and protect the steel matrix from corrosion. In the ordinary atmosphere, the zinc layer forms a very thin and dense zinc oxide layer, which is difficult to dissolve in water, so it plays a certain role in maintaining the steel matrix. If the insoluble zinc salt is formed between zinc oxide and other components in the atmosphere, the anticorrosion effect is better.
(2) It has iron-zinc alloy layer, dense separation, and unique corrosion resistance in marine salt spray atmosphere and industrial atmosphere.
(3) Because of separation and solidification, zinc-iron is soluble and has strong wear resistance.
(4) Because zinc has good ductility and its alloy layer adheres to the steel base, hot-dip parts can stop cold stamping, rolling, wire drawing and bending without damaging the coating.
(5) After hot-dip galvanizing, the mechanical properties of the steel matrix can be effectively improved, the stress of the steel parts during forming and welding can be eliminated, and the turning process of the steel structures can be stopped.
(6) Hot-dip galvanized parts have a bright and beautiful appearance.
(7) Pure zinc coating is the most plastic one in hot-dip galvanizing. Its properties are basically similar to pure zinc and it has ductility, so it is flexible.
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