Hot-dip galvanized steel sheet is a kind of steel, which belongs to galvanized steel. The manufacturing process is to make steel and molten zinc react to form an alloy.
The hot-dip galvanized steel sheet is manufactured by immersing the cleaned iron pieces in a zinc bath by the wetting action of Flux to react the steel with the molten zinc to form an alloyed film.
Hot dip galvanized steel sheet advantages
(1) Anti-rust, anti-corrosion and strong weather resistance. The anti-corrosion effect is very good, and the general environmental anti-corrosion effect can reach 30~50 years.
(2) The appearance is beautiful and the processing is easy.
(3) good surface quality
(4) Economical and practical
Hot galvanized steel plate symbol
According to processing performance, it is divided into: general purpose (PT), mechanical occlusion (JY), deep drawing (SC), ultra deep aging (CS), structure (JG);
According to the weight of zinc layer: pure zinc surface is divided into: 100/100 (zinc layer weight less than 100g/m2), 120/120, 200/200, 275/275, 350/350, 450/450, 600/600; The surface of zinc-iron alloy is divided into: 90/90 (zinc-iron alloy layer weight less than 90g/m2), 100/100, 120/120, 180/180;
According to the surface structure, it is divided into: normal zinc flower Z, small zinc flower X, smoothing zinc flower GZ, zinc iron alloy XT; according to surface quality: I group (I), I1 group (II);
Divided by size accuracy: advanced precision A, ordinary precision B;
According to the surface treatment, it is divided into: chromic acid passivation L, oil Y, chromic acid passivation and oiling LY.
Hot-dip galvanized steel sheet
Hot-dip galvanized steel sheets can be divided into thin steel sheets, thick steel sheets and extra-thick steel sheets according to their thickness. The steel sheets have many functions and can be used as roofing sheets, packaging boxes, automobile casings and various mechanical parts, and can also be bent and added. Large use range.
> 2. coil
1) The hot-rolled coil is a steel sheet which is heated by a steel billet and processed after passing through various links. The thickness of the hot-rolled steel sheet is between 2 mm and 13.5 mm, and the price of the general coil is lower than that of the flat plate. 2) The raw materials of the cold-rolled coil are the same as the raw materials of the hot-rolled coil. The process of knowledge processing is different. The cold-rolled coil is repeatedly rolled, pickled, and cold-rolled, and the steel sheet becomes a coil. This type of steel plate is used in a relatively small range, and the price is cheaper than that of hot rolling. 3) The galvanized steel sheet is, as the name implies, a layer of metal zinc coated on the surface of the steel sheet. The purpose of this is to prevent the surface of the steel sheet from being corroded and to increase its service life. Galvanized coils can be divided into hot-dip galvanized steel sheets, alloyed galvanized steel sheets, electro-galvanized steel sheets, printed galvanized steel sheets, single-sided and double-sided galvanized steel sheets, alloys, and composite plating. Zinc steel plate, color galvanized steel plate, polyvinyl chloride laminated galvanized steel plate. 4) The color coated coil is made of galvanized coil as the base material, repeatedly sprayed on the galvanized sheet, and then processed through complicated processing procedures. This type of coil has many colors, and the more commonly used ones are yellow, blue, red, and white. Because the price is moderate, it is widely used as a wall and roof.
The difference between galvanized steel sheet and hot intrusion galvanized steel sheet
1. The scope of use is different:
Hot dip galvanized sheet is mainly used in construction, home appliances, automobiles, machinery, electronics, light industry and other industries.
Galvanized steel sheets are generally widely used in construction, home appliances, vehicles and ships, container manufacturing, and electromechanical industries.
2.The classification is different:
Hot dip galvanized sheet is divided into ordinary electrolytic board and fingerprint resistant electrolytic board. The anti-fingerprint board is based on the addition of an ordinary electrolytic board to a fingerprint-resistant treatment, which is resistant to sweat and is generally used on parts that are not treated. Ordinary electrolytic plates are divided into phosphating plates and passivated plates. Phosphating is commonly used, commonly known as p material. Passivated sheets are available in oiled and unoiled parts.
A hot-dip galvanized sheet is immersed in a molten zinc bath to adhere a zinc-plated steel sheet to the surface. It is mainly produced by continuous galvanizing process, that is, the coiled steel plate is continuously immersed in a zinc-plated plating tank to form a galvanized steel sheet; and the alloyed galvanized steel sheet is used. Hot-dip galvanizing can be divided into two types: in-line annealing and off-line annealing according to the different annealing methods, which are also called protective gas method and flux method.
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