The use and classification of galvanized sheet in various industries

Galvanized sheet is a kind of steel sheet, and it can be said that many of the steel sheets are galvanized sheet. Galvanized sheet is a kind of steel plate with excellent anti-corrosion performance created according to the principle of chemistry. This method of preventing steel plate corrosion is very economical and very effective. The use of this process is also very common. are used to make galvanized sheet.

What is galvanized sheet

Galvanized sheet refers to a steel sheet plated with a layer of zinc on the surface. Galvanizing is a frequently used economical and effective method of corrosion protection, and about half of the world's zinc production is used in this process. Model introduction of galvanized sheet JIS G3302—94 Galvanized steel sheet; JIS G3312—94 Colored galvanized iron sheet; 90 Commercial-grade hot-dip galvanized sheet; ASTMA 527—90(75) Interlocking-grade hot-dip galvanized sheet; ASTMA528—90 Deep-drawing-grade hot-dip galvanized sheet; for roofing and siding; ASTMA444-89 Hot-dip galvanized steel sheet for trenches; ASTM A446-93 structural grade hot-dip galvanized steel sheet; ASTMA599-92 cold-rolled electro-galvanized steel sheet; Galvanized sheet; DINEN10142-91 part 1 mild steel hot-dip galvanized steel strip and sheet; DINEN1012-92 part 2 hot-dip galvanized sheet.​

The classification of galvanized sheet can be divided into the following categories according to production and processing methods:

①Hot dip galvanized steel sheet. The sheet steel is immersed in a molten zinc bath, and a sheet of zinc is adhered to its surface. At present, it is mainly produced by continuous galvanizing process, that is, galvanized steel plate is made by continuously immersing the rolled steel plate in a plating tank with molten zinc;

②Alloyed galvanized steel sheet. This kind of steel plate is also made by hot-dip method, but after it is out of the tank, it is heated to about 500 ℃ immediately to form an alloy film of zinc and iron. This galvanized sheet has good paint adhesion and weldability;

③ Electro-galvanized steel sheet. The galvanized steel sheet produced by the electroplating method has good workability. However, the coating is thin, and the corrosion resistance is not as good as that of the hot-dip galvanized sheet;

④Single-sided and double-sided differential galvanized steel. Single-sided galvanized steel sheet, that is, a product that is galvanized on only one side. In welding, painting, anti-rust treatment, processing, etc., it has better adaptability than double-sided galvanized sheet. In order to overcome the disadvantage of not being coated with zinc on one side, there is another galvanized sheet coated with a thin layer of zinc on the other side, that is, double-sided differential galvanized sheet;

⑤Alloy and composite galvanized steel sheet. It is made of zinc and other metals such as aluminum, lead, zinc, etc. to make alloys or even composite plated steel plates. This kind of steel plate has both excellent anti-rust performance and good coating performance;

In addition to the above five types, there are also colored galvanized steel sheets, printed and painted galvanized steel sheets, and PVC laminated galvanized steel sheets. But the most commonly used is still hot-dip galvanized sheet. Main production plants and import producing countries:

①Main domestic production plants: Wuhan Iron and Steel, Anshan Iron and Steel, Baosteel Huangshi, MCC Hengtong, Shougang, Panzhihua Iron and Steel, Handan Iron and Steel, Maanshan Iron and Steel, Fujian Kaijing, etc.;

②The main foreign producers are Japan, Germany, Russia, France, South Korea, etc.​​

The output of galvanized sheet is a lot every year. Because the construction industry and various industries are constantly developing, new galvanized sheet is needed every moment, so the market prospect of galvanized sheet is very promising. Okay, if you want to sell galvanized sheet or want to buy galvanized sheet, learn more about galvanized sheet.

What is the main purpose of galvanized sheet

Classification and use of galvanized sheet According to the production and processing methods, it can be divided into the following categories:

①Hot dip galvanized steel sheet. The sheet steel is immersed in a molten zinc bath, and a sheet of zinc is adhered to its surface. At present, it is mainly produced by continuous galvanizing process, that is, galvanized steel plate is made by continuously immersing rolled steel plates in a plating tank where zinc is melted;

②Alloyed galvanized steel sheet. This kind of steel plate is also produced by hot dip method, but immediately after it is out of the tank, it is heated to about 500 ℃ to form an alloy coating of zinc and iron. This galvanized sheet has good paint adhesion and weldability;

③ Electro-galvanized steel sheet. The galvanized steel sheet produced by the electroplating method has good workability. However, the coating is thin, and the corrosion resistance is not as good as that of the hot-dip galvanized sheet;

④Single-sided and double-sided differential galvanized steel. Single-sided galvanized steel sheet, that is, a product that is galvanized on only one side. In welding, painting, anti-rust treatment, processing, etc., it has better adaptability than double-sided galvanized sheet. In order to overcome the disadvantage that one side is not coated with zinc, there is another galvanized sheet coated with a thin layer of zinc on the other side, that is, double-sided differential galvanized sheet;

⑤Alloy, composite galvanized steel sheet. It is made of zinc and other metals such as lead and zinc to make alloys and even composite plated steel sheets. This kind of steel plate has both excellent anti-rust properties and good coating properties. In addition to the above five types, there are also colored galvanized steel sheets, printed and painted galvanized steel sheets, and PVC laminated galvanized steel sheets. But the most commonly used is still hot-dip galvanized sheet. Galvanized steel sheets can be divided into general use, roof use, building outer panel use, structural use, tile ridge use, tensile use and deep drawing use.

Commonly used galvanized sheet industry

High-volume galvanized sheet is used in automobile manufacturing, refrigerators, construction, ventilation and heating facilities, and furniture manufacturing. Galvanizing has become an important method of anti-corrosion of steel, not only because zinc can form a dense protective layer on the surface of steel, but also because zinc has cathodic protection effect. Corrosion of materials in the construction industry roof, roof components, balcony panels, window sills, newsstands, warehouses, rolling doors, heaters, rainwater pipes and other household appliances refrigerators, washing machines, switch cabinets, air conditioners, microwave ovens, bread machines, copiers, vending machines, electric fans , Vacuum cleaners and other furniture industries Lampshades, wardrobes, desks, bookshelves, counters, signboards, medical equipment and other transportation industries Automobile ceilings, car shells, carriage panels, tractors, trams, containers, highway walls, ship compartment panels and other musical instrument shells , garbage bins, billboards, clocks and watches, photographic equipment, measuring instruments, etc. Galvanized sheet Scope of application Use category Building exterior building interior furniture Household appliances Substrate category Hot-dip galvanized sheet Electro-galvanized or hot-dip galvanized sheet Zinc plate, at present, the technology of galvanizing industry in my country has developed rapidly, which can change the solid form of galvanized steel, so that the scope of application of galvanized steel is continuously expanded. For example, galvanized sheet and strip products are mainly used in construction, light industry, and automobiles. They are mainly used for sealing and rust prevention of galvanized sheet and other metal product components and materials. Scope of application: It is suitable for the sealing and anti-rust treatment of galvanized sheets, metal product components and materials. The upper plating agent is used to immerse the steel components in the mixture of zinc chloride and ammonium chloride, so that the surface of the components is separated from the air to prevent oxidation. rust and activate the iron molecules on the surface, making it easier for the component to achieve iron-zinc compound reaction in the hot zinc solution; MIG arc brazing can be used to weld low-alloy steel, non-alloy steel and stainless steel, and the main purpose is to weld the surface with coating. steel plate. The heat brought by the droplet transfer volatilizes the galvanized layer, and very little zinc vapor enters the molten pool, and continues to be discharged during the solidification process, so there are very few remaining pores in the weld. Main uses: construction engineering, machinery manufacturing, container manufacturing, shipbuilding, bridges, etc.