What Are The Advantages And Disadvantages of Zinc-aluminum-magnesium Photovoltaic Brackets?

Zinc aluminum magnesium are alloy metals, which means steel plates that add a certain amount of Al and Mg to the existing hot-dip galvanized coating. It is an alloy metal with excellent comprehensive properties. Galvanized aluminum-magnesium photovoltaic bracket has the following characteristics.

1. Simple processing, aluminum-magnesium photovoltaic bracket, using direct cutting;

Hot-dip galvanizing process: workpiece degreasing, cleaning, cleaning, soaking, auxiliary solvent drying, preheating, finishing, cooling, passivation, rinsing, drying, and inspection. If the transfer process does not work properly, a series of adverse reactions will occur in the next process, operating costs will increase significantly, or the hot dip plating of the product will become poor.

If the pretreatment is not good, the dissolved zinc cannot fully react with the steel to produce an optimal galvanized film structure. Poor post-processing will damage the appearance of the film and reduce the value of the product. Traditional hot-dip galvanizing cutting requires paint repair, surface treatment and intermediate repetitive logistics, making the procedure cumbersome. In contrast, if the zinc-aluminum-magnesium photovoltaic bracket is directly cut and used, no further processing is required, and it is lightweight and beautiful.

2. Automatic repair, automatic repair of zinc, aluminum and magnesium cutting, stamping and steel coating.

The coating film undergoes a chemical reaction in the air. Magnesium ions first generate magnesium hydroxide, and then magnesium hydroxide absorbs carbon dioxide to generate magnesium carbonate. This substance has a buffering effect on the PH value and reduces the speed at which zinc dissolves in water. Anodic area and oxidation prevention.

The formation of zinc and magnesium promotes the formation of dense corrosion products, reduces the diffusivity of oxygen, and reduces the reduction rate of oxygen in the cathode region. Magnesium ions and oxygen ions undergo a redox reaction, and the "white rust" protective layer generated on the bracket is automatically repaired.

3. Corrosion resistance, corrosion resistance is 5-10 times that of hot dip galvanizing.

There are many times when the film is hot-coated, and red rust will appear on the exposed parts in the early stages of corrosion. As the corrosion time increases, the red and green areas increase. Membrane "white rust" is a dense protective layer generated on the bracket that can play a self-healing role.