Galvalume steel is also known as aluminum-zinc alloy steel, zinc-aluminum steel, galvanized steel (alu-zinc steel), and SGLC, galvanized metal is made of 55% aluminum, 43.4% zinc, and 1.6% silicon solidified at 600 ° C. Its overall structure consists of aluminum-iron-silicon-zinc, forming a dense quaternary crystal alloy. The surface of the galvanized steel plate is smooth, smooth, and brilliant starlight, and its base color is silvery white. The special coating structure makes it have excellent corrosion resistance. With the application of anti-fingerprint coating (AFP), the surface hardness of aluminum-zinc and galvanized steel sheets increases. Easy to maintain: Solve the problem of fingerprints on steel; easy to maintain using a clean cotton towel or cloth and light detergent. Galvalume steel is widely used in various applications such as auto parts, machine panels, decks, bulkheads, and roofs due to its excellent corrosion resistance and relatively low cost. Anti-fingerprint coatings have been applied to galvanized steel, Galvanized steel, and galvalume steel to prevent white rust and improve lubrication during sheet forming. In this study, the alkali corrosion resistance and surface resistivity of anti-fingerprint-coated galvalume steel were measured and compared. The characteristics of the corroded surface were observed by scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS). It is found that the measured surface resistance of the AFP galvalume sheet is essentially the resistance of the galvanized sheet itself. The galvanized coating begins to corrode from the dendritic aluminum-rich area, and after a period of alkaline leaching, only the zinc-rich area remains.

In the construction field, it can be used to make steel structure buildings, curtain walls, roofs and other components to improve the seismic performance and service life of the building; in the home appliance industry, it can be used to make the shells and internal structural parts of refrigerators, washing machines, air conditioners and other home appliances to improve the product quality. In the light industry, it is used to make light industrial products such as containers, shelves, billboards, etc. to improve the stability and durability of the products.


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