ALUZINC STEEL

Aluzinc is a type of steel product that consists of a coating of aluminum and zinc alloy. The production process involves several steps:

• Steel Substrate Preparation: High-quality steel coils are cleaned to remove any contaminants like rust, oil, or mill scale. This ensures proper adhesion of the coating.
• Hot Dip Galvanizing: The cleaned steel coils are passed through a bath of molten zinc at temperatures typically around 460°C (860°F). This process, known as hot-dip galvanizing, creates a layer of pure zinc on the surface of the steel to provide corrosion protection.
• Aluminum Coating: After the galvanizing process, the steel coils are then coated with an aluminum alloy (typically containing around 55% aluminum, 43.4% zinc, and 1.6% silicon) through a process called hot-dip coating or hot-dip galvannealing. This creates the aluzinc coating, which combines the corrosion resistance of zinc with the sacrificial protection of aluminum.
• Cooling and Solidification: Once coated, the steel coils are cooled to solidify the aluzinc layer and ensure uniform thickness and adherence to the steel substrate.
• Surface Treatment: Some aluzinc products may undergo additional surface treatments such as chromating or passivation to further enhance corrosion resistance and improve paint adhesion.
• Final Inspection and Coil Cutting: The finished aluzinc coils are inspected for quality, including coating thickness, uniformity, and adhesion. They may then be cut into smaller coils or sheets according to customer specifications.