Hot-dip aluminum-zinc plate is a kind of pre-coated steel plate which is prepared by hot-dip coating of al-zn on both sides with cold-rolled steel plate of various strength and thickness specifications as the base material.
It combines the physical protection and high durability of AI with the electrochemical protection characteristics of Zn.
Sometimes the surface layer has a high decorative bright silver gray and regular pattern, and a sense of buoyancy.
Just as sunscreen protects skin, aluminum and zinc coatings provide good protection to steel plates.An electrochemical reaction of semolboda occurred at the defect
As can be seen from the above introduction, the biggest advantage of hot dip aluminum zinc is corrosion resistance, than the same thickness of hot dip galvanized steel corrosion resistance is much higher, the service life is also high.
Heat resistance is also a major advantage: ordinary hot-dip galvanized products, the use temperature is generally not more than 230°C, aluminum zinc plate can be used in 315 degrees high temperature for a long time.
Some oven liners also use hot – dip aluminum – zinc plates
High reflectivity: the ability to reflect light and heat is twice that of hot-dip galvanized steel, so it is often used as an energy-saving building material.
Formability: can meet the general car press, bending and other processing requirements.
Use restrictions
1, in the alkaline environment, be careful to use hot aluminum zinc plating;
2, to avoid directly cutting hot aluminum zinc plating on the site, the best use of edge plate;
3, the construction of aluminum zinc materials to pay attention to drainage to prevent corrosion;
4. Avoid direct contact with wet cement, wood, lead, copper, graphite, etc.;
5, processing, stacking to prevent moisture and high temperature caused by resistance to fingerprint film black.