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[China Aluminum Industry Network] Product Quality Features
Hot dip galvanized aluminum alloy plated surface is smooth, silver gray, metallic luster, its surface is uniformly distributed Al-Zn alloy crystal flower. The surface of the coating is a solid dendritic crystal, its dendrite part is an aluminum-rich alpha phase solid solution, the interdendritic is a zinc-rich pseudo-eutectic beta phase, and the inner layer is Al-Fe-Si-Zn intermetallic layer aluminum zinc The organizational structure of the plated layer of the alloy coating determines that it has the following quality characteristics:
1) Due to the combination of the non-dynamic protection of aluminum and the sacrificial anode protection of zinc, the outstanding performance characteristics of the hot-dip galvanized aluminum alloy coated plate (abbreviated as GL) is that it has excellent corrosion resistance, hot-dip aluminum-zinc alloy The corrosion resistance of the plated steel plate coating is 2 to 6 times that of the ordinary hot galvanized plate. In addition, the GL board also exhibits excellent incision corrosion resistance in the middle and later stages of use.
2) GL plate has excellent high-temperature corrosion resistance due to its high melting point and strong resistance to oxidation and heat reflection. The GL board allows long-term use in a working environment of 300°C and can be used in a short time at a high temperature of 500-600°C. The working ambient temperature of the GI is generally only allowed at room temperature, and the extreme operating temperature is 230°C.
3) The surface of the GL plate is smooth, silver-gray, metallic luster, and the Al-Zn alloy crystal is evenly distributed on the surface of the GL plate, and thus has a good appearance and decorativeness.
4) Since the porosity of the aluminum-zinc alloy coating is at least 2%, the GL plate is prone to corrosion during inventory and transportation, resulting in defects such as white rust and black spots. In addition, GL also has good coating properties, processability and weldability, and can meet the requirements of users in the construction, household appliances and automotive industries.
kaiping aida sanitary ware technology co.,ltd , https://www.kpaidafaucets-jm.com