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Material characteristics of galvanized sheet
发布时间:2021-04-06 06:13:26浏览次数:243
Galvanized plate is a common building material in building decoration. The most commonly used galvanized sheet materials are non alloy hot galvanized steel strip and alloy hot-dip galvanized steel strip, alloy galvanized steel plate, hot-dip galvanized steel plate, electric galvanized steel plate, single-sided galvanized steel plate, etc. The thickness of galvanized plate is between 0.4 and 3.2mm.
Galvanized plate is to plating a layer of zinc on the surface of steel plate, which can play a role of corrosion prevention to a certain extent, and this production method can also reduce the consumption of zinc. When the galvanized plate is produced, special technology is used. If the process and processing method are different, the galvanized plate produced is not the same. Today we will share with you the specific material of galvanized sheet~
Material of galvanized sheet
1. Hot dip galvanized steel plate. A sheet of steel that immerses the sheet steel into a molten zinc bath to make its surface adhere to a layer of zinc. At present, the continuous galvanizing process is mainly used to produce the rolled steel plate, which is made by continuously immersing the rolled steel plate in the bath with zinc melting;
2. Alloy galvanized steel plate. The steel plate is also made by hot dip method, but after the groove is discharged, it is heated to about 500 ℃ immediately to produce alloy film of zinc and iron. The galvanized sheet has good coating tightness and weldability;
3. Galvanised steel plate. The process of this kind of galvanized steel plate is good by electroplating. But the coating is thin and corrosion resistance is not as good as that of hot dip galvanized plate;
4. Single side and double side difference galvanized steel plate. Single side galvanized steel plate, i.e. only one side galvanized products. It has better adaptability than double-sided galvanized plate in welding, coating, rust prevention treatment and processing. In order to overcome the disadvantage of single side without zinc coating, there is another kind of zinc plate coated with thin layer zinc on the other side, namely, double-sided differential galvanized plate;
5. Alloy, composite galvanized steel plate. It is made of zinc and other metals such as aluminum, lead, zinc, etc. and even composite plating of steel plate. This steel plate has excellent rust resistance and good coating performance;
The specification of galvanized sheet includes length, width and thickness. The common galvanized plate is 2000mm and 2500mm in length, 1000mm in width, 1200, 1250mm and 1500mm in width, and the thickness is between 0.4 and 3.2mm. There are errors in these specifications. The thickness error is generally 0.02-0.04mm, but it is not fixed, and the error of length and width should be controlled within 5mm.
Density of galvanized sheet
Calculation method of density of galvanized sheet = sheet metal + zinc coating
For example: the weight of a millimeter thick galvanized plate is 7.85 kg, the weight of the galvanized layer is 2 × 0.05 kg, and the weight per square meter is 7.95kg, and the other specifications are calculated as well.
Because of the different thickness of the coating, the weight of galvanized plate will be a little heavier than that of ordinary iron plate, and the price of different thickness of coating is different.
Generally speaking, the density of galvanized sheet is 7.85 tons / m3, namely, the thickness of the plate is 1.0mm, the area is 1 square meter and the weight is 7.85kg.