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Whether the galvanized coil is resistant to high temperature
Release time:
2022-10-19
The melting point of zinc is 419.5 ℃, and its chemical properties are vivid. In the air at room temperature, a thin and dense basic zinc carbonate film is formed on the surface, which can prevent further oxidation. When the temperature reaches 225 ℃, the zinc is oxidized violently, showing white zinc oxide. After high-temperature barbecue, the anti-corrosion layer on the outer surface of the galvanized sheet is oxidized, so the galvanized sheet cannot be resistant to high temperature, the outer surface will change color when heated, or other protective substances on the outer surface will easily turn yellow after oxidation.
The melting point of zinc is 419.5 ℃, and its chemical properties are vivid. In the air at room temperature, a thin and dense basic zinc carbonate film is formed on the surface, which can prevent further oxidation. When the temperature reaches 225 ℃, the zinc is oxidized violently, showing white zinc oxide. After high-temperature barbecue, the anti-corrosion layer on the outer surface of the galvanized sheet is oxidized, so the galvanized sheet cannot be resistant to high temperature, the outer surface will change color when heated, or other protective substances on the outer surface will easily turn yellow after oxidation.
The surface of galvanized coil should be removed from oil or wax components and other stains or dust, so as to improve the adhesion of putty;
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