What is galvanized sheet metal? Galvanized Sheet in Detail

Release time:

2024-03-15

Surface state: galvanized sheet due to the coating process in the treatment of different ways, the surface state is different, such as ordinary zinc flower, fine zinc flower, flat zinc flower, no zinc flower and phosphate treatment of the surface. The German standard also provides a surface level.

(1) Surface state: galvanized sheet due to the coating process in the treatment of different ways, the surface state is different, such as ordinary zinc flower, fine zinc flower, flat zinc flower, no zinc flower and phosphate treatment of the surface. The German standard also provides a surface level.

(2) galvanized sheet should have a good appearance, there shall be no harmful defects on the use of the product, such as no plating, holes, rupture, and slag, more than the thickness of plating, abrasion, chromic acid stains, white rust and so on. Foreign standards on the specific appearance of defects are not very clear. When ordering some specific defects should be listed in the contract.

1, the amount of galvanization is expressed in galvanized sheet zinc layer thickness of a commonly used and effective method. Galvanized steel is generally 180-220g / ㎡, in the humid southern region can increase the amount of galvanized to 275g / ㎡ to improve the service life of steel components.

The service life of galvanized products is generally 20-25 years.

2, galvanized steel strip zinc layer characteristics. Electro galvanized zinc layer is not able to form zinc flower, hot-dip galvanized layer has zinc flower, the formation process is as follows: when the galvanized strip from the zinc pot out of the air knife blowing, a large number of zinc liquid was blown back to the zinc pot, when the strip steel surface there is a pure layer of zinc, liquid attached to the surface of the steel plate, the formation of a large number of crystalline nuclei in the surface of the steel plate, with the rise of the steel plate cooling, so that the crystalline nuclei slowly grow into the zinc flower. The faster the cooling rate of zinc flower the smaller, the slower the cooling rate of zinc flower the larger.

3, no flower galvanized sheet: in fact, the zinc flower is only ornamental value, no practical use value, on the contrary, in the corrosion prevention is not good, in developed countries are the implementation of small zinc flower and no zinc flower galvanized steel.

Latest News

Difference between corrugated board and color steel board

Color steel plate is on the basis of the substrate (galvanized plate, aluminized plate), in the surface coating or lamination of various organic coatings or plastic film and other chemical coatings. Different coatings his performance is different. The choice of what coating color coated sheet, according to the use of this color coated sheet environment to determine.

2024-03-15

What are the main application industries of color coated sheet

Galvanized wire can be divided into hot-dip galvanized and cold galvanized, hot-dip galvanized manufacturing speed, but the coating is not balanced, the lowest standard in the market is 45 microns, the highest can be more than 300 microns, and the color is very dark, need to consume a lot of zinc metal, it can be formed with the substrate metal into the layer of corrosion resistance is excellent

2024-03-15

What are the precautions for using galvanized sheets?

When storing, high humidity, acidic and damp environment is not conducive to its keeping. Choose a dry, clean and ventilated place in the house for storage to avoid erosion by dew or penetration of moisture. When storing, don't destroy the wrapping paper and shorten the storage time as much as possible.

2024-03-15

Difference between flowered and non-flowered galvanized sheets

From the name of the two can be known, the former is printed on the surface of the pattern, it looks beautiful and shiny, usually, can be used to make the outer shell of household appliances; and the latter is the surface does not have any pattern, it looks very ordinary, the color is not so bright, some dark. In addition to the difference in appearance, that is, with or without pattern, there is no other difference between the two, the use is similar.

2024-03-15

What are the main differences between galvanized sheet metal and stainless steel?

Different materials: galvanized sheet is cold rolled steel coated with zinc on the surface, while stainless steel is a kind of alloy steel containing chromium and other alloying elements.Different corrosion resistance: stainless steel has a strong corrosion resistance, while the corrosion resistance of galvanized sheet is lower.

2024-03-15

What are the advantages of galvanized steel (What to consider when buying galvanized steel)

Galvanized sheet is a metal material that is made from steel and coated with a zinc layer on the surface. The galvanizing process is usually done by hot-dip or electroplating. Galvanizing can effectively prevent steel from rusting and corroding in wet or corrosive environments, thus extending its service life. Galvanized sheet is commonly used in construction, automotive, and home appliances.

2024-03-15