Diligent maintenance of galvanized sheet, so that it can be used for longer
2022-12-12
Galvanized sheet is a kind of steel sheet, which is used a lot in construction and industry. Galvanized sheet is divided into flower galvanized sheet and galvanized sheet without galvanized sheet. The coating of galvanized sheet without galvanized sheet is uniform and firm, which is conducive to the corrosion resistance of the coating. It has a long service life and is respected by the industry, but the galvanized sheet that has been a lot longer is not as bright as before. So do you have maintenance? Many people will ask if the galvanized sheet still needs maintenance? The answer is yes, it needs maintenance. Let's look down together.
For the maintenance of galvanized coils is a very simple but also very important work. If you do this work well, you can easily prolong the service life of the product. Compared with the practice of repairing or replacing the fault, the maintenance method is good. It is beneficial to the operation of the machine.
In the normal working environment, the thickness of the galvanized layer of the hot-dip galvanized coil is more than 50um, which can be safely used for 30 years. This is the use of the anodic protection principle of the iron substrate to hot-dip the galvanized sheet. This practice makes the pure zinc layer form a dense protective film in the atmospheric environment to prevent zinc corrosion. However, if we encounter a humid environment, we must isolate the direct contact between the medium and the zinc layer by coating asphalt or sealing the tank to prevent the corrosion and perforation of the galvanized layer.
Galvanized steel sheet is coated with a layer of metal zinc on the surface of the steel sheet to prevent corrosion on the surface of the steel sheet and prolong its service life. This zinc-coated steel sheet is called galvanized sheet. Understanding these maintenance methods can help the function of galvanized coil products to play, and ensure that galvanized coil can be used safely within the life span to ensure that our products can be used for a longer time.
Common production and processing methods can be divided into the following categories.
① Hot-dip galvanized steel plate: a thin steel plate that is immersed in a molten zinc bath to make a layer of zinc adhere to its surface. At present, the continuous galvanizing process is mainly used to produce, that is, the coiled steel plate is continuously immersed in a galvanized bath with molten zinc to make galvanized steel plate.
② Alloyed galvanized steel sheet: This steel sheet is also hot-dipped, but it is heated to about 500 ° C immediately after grooving to form an alloy film of zinc and iron. This galvanized sheet has good coating adhesion and weldability.
③ Electro-galvanized steel sheet: This galvanized steel sheet manufactured by electroplating has good processability, but the corrosion resistance of the thin coating is not as good as that of the hot-dip galvanized sheet.
④ Single-sided galvanized and double-sided differential galvanized steel sheet: single-sided galvanized steel sheet is a product that is only galvanized on one side. It has better adaptability than double-sided galvanized sheet in terms of welding, painting, anti-rust treatment and processing.
⑤ Alloy and composite galvanized steel plate: It is an alloy or even composite galvanized steel plate made of zinc and other metals such as aluminum, lead, zinc, etc. This steel plate has both excellent anti-rust performance and good coating performance.
Of course, in addition to the above five, there are color galvanized steel sheets, printed and coated galvanized steel sheets, PVC laminated galvanized steel sheets, etc. But at present, hot-dip galvanized sheets, flower-free galvanized sheets and so on are still commonly used.
MORE NEWS
/ Phone