Uncoil the steel plate to provide the steel chain needed for continuous operation, and weld the tail of the forward strip and the leading edge of the trailing strip to ensure the continuous production of the unit.
2. Degreasing and cleaning
The cleaning section is to clean the surface of the strip to remove rolling oil and copper powder to obtain good coating adhesion and process performance. It usually includes self-spraying, cleaning, titanium electrode cleaning, cleaning, self-spraying, squeezing and heating. Air drying and other equipment, the cleaning section is more important for hot dip galvanizing, and is an important process for obtaining good strip performance. Galvanized steel sheet factory, galvanized sheet, hot-dip galvanized sheet, galvanized coil sheet, galvanized steel sheet, galvanized sheet price, galvanized iron
3. Quenching
The hardened strip is work-hardened and quenched to obtain excellent physical properties of the product. By controlling the atmosphere in the furnace, the strip coating properties are obtained. The annealing furnace usually consists of heating, heating, soaking, and water cooling. Wait for multiple segments to form.
4. Demister zinc layer control
The coating thickness of the strip surface is controlled by the gas generator gas, usually gas or pure N2, flowing to the strip surface after leaving the zinc pot.
5. Fine grain strengthening solution
The fine grain strengthening solution is a process of heating the hot-dip galvanized strip to obtain a zinc non-ferrous metal coating.
1) Improve the surface flatness of galvanized steel sheets. After finishing, the flatness of the galvanized steel sheet is improved to a certain extent, and the corrugation of the galvanized steel sheet is partially eliminated. At the same time, the slag particles or other uneven spots on the surface can also be smoothed to make the surface smoother. Leveling.
(2) Adjust the surface roughness of the galvanized steel sheet surface. By controlling the surface roughness of the bare metal work roll, the original uneven surface roughness of the galvanized steel plate surface can be adjusted to a certain range. This can improve the product's sprayability and wettability during processing.
(3) Improve the surface color of galvanized steel sheets. For products with small zinc flakes and no flakes, galvanized steel sheets can obtain a smoother and more uniform surface through finishing. For some private enterprises to use large spangle products as color-coated substrates, the protrusions and different smoothness of the spangles produced by the crystals of the large spangles can be smoothed and consistent, making the spangles more blurry. It is useful for covering zinc spatter when spraying.
(4) Improve the production and processing characteristics of galvanized steel sheets. Through smoothing, the compromise platform of the galvanized steel plate can be reduced or inconspicuous, which can avoid causing metal slip lines in subsequent processing.
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