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Zinc-aluminum-magnesium (ZAM) and hot-dip galvanizing differ significantly in terms of corrosion resistance, service life, workability, self-healing ability, and environmental friendliness. ZAM exhibits stronger corrosion resistance and a longer service life, while being more convenient in processing and use, and also boasts better environmental performance. However, due to its higher cost, it is typically applied in situations where higher corrosion resistance is required. Hot-dip galvanizing, on the other hand, is an economical and practical corrosion prevention method suitable for general corrosion prevention needs, but it is slightly inferior to ZAM in terms of environmental friendliness and workability.
Application Features:
Hot-dip galvanizing: Drilling and cutting need to be completed when it is still a steel bracket, as later cutting and drilling will damage the formed galvanized layer. If no secondary treatment is carried out, rusting may occur during use.
Zinc-aluminum-magnesium: It can be cut and punched during use. In humid weather, the dense protective film near the cut of zinc-aluminum-magnesium can continuously infiltrate and migrate to the metal at the cut, thereby reducing the degree of corrosion. Therefore, zinc-aluminum-magnesium brackets can be punched and cut as desired.
Environmental protection:
Hot dip galvanizing: The process generates a large amount of wastewater and waste gas, which has a certain impact on the environment.
Zinc-aluminum-magnesium: It generates less wastewater and waste gas during production, exhibiting good environmental performance.
Cost:
Hot galvanizing: It is relatively economical and cost-effective, suitable for general anti-corrosion needs.
Zinc-aluminum-magnesium: Due to the use of more alloy elements, its cost is relatively high, making it suitable for applications where higher corrosion resistance is required.
Zinc-aluminum-magnesium (ZAM) coating and hot-dip galvanizing are two distinct metal anti-corrosion coating technologies, differing in composition, manufacturing process, corrosion resistance, application characteristics, and environmental friendliness
Ingredients:
Hot dip galvanizing: It involves immersing steel supports, which have been cleaned and activated, into molten zinc to form a zinc alloy coating with good adhesion on their surface.
Zinc-aluminum-magnesium: A certain amount of AI and Mg molecules are added to it to form a zinc-aluminum-magnesium photovoltaic bracket 2.
Manufacturing process:
Hot galvanizing: The steel support needs to be fabricated first and then immersed in zinc liquid for the secondary process.
Zinc-aluminum-magnesium: The support is directly made from steel strip coated with zinc-aluminum-magnesium, eliminating the need for secondary process step 2.
Anticorrosion performance:
Hot-dip galvanizing: It exhibits strong corrosion resistance and damage resistance, but its galvanized layer is relatively thick, making it prone to peeling and detachment.
Zinc-aluminum-magnesium (ZAM): The coating is denser, less prone to peeling and detachment, and exhibits stronger corrosion resistance and damage resistance. Additionally, due to the thinner coating of ZAM, photovoltaic (PV) supports of the same specification made of ZAM are lighter and more convenient than those made of hot-dip galvanized material
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