The galvanized coils we see are made of a combination of steel and zinc alloys, and the process of making these coils is very high, requiring continuous galvanization. The finished galvanized coils have excellent welding properties and the paint adhered to the surface has a very good adhesion. This galvanized coil plays a vital role in the industrial as well as the chemical field and is very cheap to buy and can be purchased in ordinary stores.
It can be divided into the following categories according to the method of production and processing:
It can be divided into the following categories according to the method of production and processing:
①Hot-dip galvanized coil. Thin coils are immersed in a molten zinc bath to make a thin coil with a layer of zinc adhering to its surface. At present, the main use of continuous galvanizing process production, that is, the rolls of rolls continuously immersed in the melting of zinc plating bath made of galvanized rolls;
② alloying galvanized rolls. This volume is also manufactured by hot dipping method, but in the tank, immediately after it is heated to about 500 degrees, so that the generation of zinc and iron alloy film. This galvanized coil has good paint adhesion and weldability;
③Electro-galvanized coil. Electroplating method of manufacturing this galvanized coil has good processability. However, the coating is thinner and the corrosion resistance is not as good as hot-dip galvanized coils;?
④Single-sided plating and double-sided differential galvanized coil.
Galvanized Coil Main Application Industries:
A large number of galvanized thin coils are used in automobile manufacturing, refrigerated containers, construction, ventilation and heating facilities, and furniture manufacturing. Galvanizing 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 galvanized layer is broken, it still prevents corrosion of the ferrous parent material through the cathodic protection effect.
Construction industry: roofs, roof components, balcony face rolls, window sills, kiosks, warehouses, roller shutters, heaters, rainwater pipes, etc.
Household appliances: refrigerators, washing machines, switchgear, air conditioners, microwave ovens, toasters, photocopying machines, vending machines, fans, vacuum cleaners, etc.
Furniture industry: lampshades, closets, tables, bookshelves, counters, signboards, medical equipment, etc.
Transportation industry: automobile ceiling rolls, car shells, carriage rolls, tractors, trams, containers, highway fences, ship bulkhead rolls, etc.
Other: musical instrument shells, trash garbage cans, billboards, clocks and watches, photographic equipment, meters, etc.
Color-coated steel coils are hot-dip galvanized coils, hot-dip alumina-zinc plating coils, electrogalvanized coils and so on, and then the surface of the coils is pre-treated. pre-treatment.
Of course, in the production of galvanized coils, the first must be passivated before the second step of oiling, and finally paint sealing, phosphating. After a long step produced by the galvanized coil is very durable, of course, if the user does not need to phosphatize, in the production process can be omitted this step! In the use of galvanized rolls, we must prevent scratches, because galvanized rolls are not prevent the effect of friction, otherwise galvanized rolls will be damaged by your hairy hands and feet Oh.
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