Galvanized aluminum magnesium steel after corrosion why can self repair?
Galvanized aluminum magnesium steel is a new type of high corrosion resistance coated steel plate. Under the condition of the same zinc layer thickness, the corrosion resistance of galvanized aluminum magnesium steel is 10-20 times that of traditional galvanized steel and aluminum plated zinc steel. Therefore, since its birth, galvanized aluminum magnesium steel has attracted wide attention from industrial builders around the world.
In addition to having super corrosion resistance, galvanized aluminum magnesium steel section self-repair is also a big feature, today we will take you to understand: galvanized aluminum magnesium steel is corroded after why can self-repair.
The incision self-repair of galvanized alumino-magnesium steel products refers to that in a humid and corrosive environment, the coating material near the incision is continuously migrated to the exposed incision position by melting into the water film attached to the exposed metal surface, forming a protective film (white rust) composed of zinc hydroxide, basic zinc chloride and magnesium hydroxide, which gradually covers the exposed incision and separates the external corrosive medium from the exposed metal. This prevents further etching of the incision.
Therefore, the zinc aluminum magnesium coating has a better protection ability for the cutting edge of the steel plate, welding parts and parts damaged by severe deformation of the coating.
Because of its good corrosion resistance, galvanized aluminum magnesium steel is widely used in civil construction, agricultural livestock production, railway and road, power communication, photovoltaic support, industrial refrigeration and other industries.
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