Galvanized coil, dipping a sheet of steel into a molten zinc bath so that it adheres to a sheet of zinc on its surface. At present, the continuous galvanizing process is mainly used for production, that is, the steel plate into a roll of continuous immersion in the melting of zinc plating tank made of galvanized steel plate and alloyed galvanized steel sheet. This steel plate is also made by hot dip, but immediately after the trough, it is heated to about 500℃, so that it generates an alloy film of zinc and iron. This galvanized coil has good coating adhesion and weldability.
Galvanized coil material
a) Hot dip galvanized steel coil. A thin steel coil is dipped into a molten zinc tank so that its surface is adherent to a thin steel coil of zinc. At present, the continuous galvanizing process is mainly used for production, that is, the steel plate into a roll of continuous immersion in the melting zinc plating tank made of galvanized steel coil;
b) alloyed galvanized steel coil. This steel coil is also made by hot leaching, but immediately after the trough, it is heated to about 500℃, so that it generates an alloy film of zinc and iron. This galvanized coil has good coating tightness and weldability;
a) galvanized steel coil. This kind of galvanized steel coil has good machinability by electroplating. But the coating is thin, corrosion resistance as hot dip galvanized coil;
Application of galvanized coil
A large number of galvanized thin coils are used in automobile manufacturing, refrigerator, construction, ventilation and heating facilities and furniture manufacturing. Zinc plating has become an important method of steel corrosion prevention, not only because zinc can form a dense protective layer on the surface of steel, but also because zinc has a cathodic protection effect, when the zinc layer is damaged, it can still prevent the corrosion of iron base metal through cathodic protection.
Galvanized coil specification
Galvanized coil specifications are common galvanized sheet thickness in 0.4~2.0. Generally less than 0.4mm state-owned large steel mills do not produce, generally for the production of private small steel mills, the conventional specifications are 0.35, 0.30, 0.28, 0.25, generally the thinest to 0.15, more than 2.0mm due to the difficulty of straightening, so more than 2.0 with the increase of thickness of the price also rises.
Post time: Mar-24-2022