What are the characteristics of zinc-aluminum-magnesium coated seismic brackets?

At present, most of the seismic brackets at home and abroad are still using the traditional hot-dip galvanized coating, which is facing challenges in processing, repair, corrosion resistance, and life. In order to solve these problems, a kind of zinc-aluminum-magnesium coating has been developed abroad, and this kind of steel plate has highlighted its strong competitiveness as soon as it appears. Zinc-aluminum-magnesium is an alloy metal, which refers to the coated steel plate with a certain amount of Al and Mg added to the existing hot-dip galvanized coating, which is an alloy metal with excellent comprehensive properties. Among them, the zinc-aluminum-magnesium coated seismic bracket has the following characteristics:
1. [Easy processing] – zinc-aluminum-magnesium coated seismic bracket, directly cut and used; Traditional hot-dip galvanizing coating process: workpiece → degreasing→ water washing→ pickling→ water washing→ dipping solvent → baking, hot → hot-dip galvanizing→ finishing→ cooling→ passivation→ rinsing→ drying → inspection. If the operation of the previous process is not good, it will cause chain adverse reactions in the subsequent process, and greatly increase the operating cost or cause bad hot-dip galvanized products. If the pretreatment is poor, the molten zinc cannot react with the steel normally and completely to form the most perfect galvanized film tissue. If the post-treatment is not good, it will destroy the appearance of the galvanized film and reduce the value of the product. Traditional hot-dip galvanizing requires galvanizing, touch-up, surface treatment and repeated logistics in the middle after cutting, and the process is cumbersome. In contrast, the zinc-aluminum-magnesium coated bracket is directly cut and used, eliminating the need for re-processing, which is lightweight and beautiful! Therefore, compared with the use of traditional plating, zinc-aluminum-magnesium coating reduces a lot of time, manpower, material and financial resources, and is cost-effective!
2. [Automatic repair] – zinc, aluminum and magnesium automatically repair the plating of cutting, stamping and cross-section; The reason is that the coating reacts chemically in the air, magnesium ions first form magnesium hydroxide, magnesium hydroxide and then absorb carbon dioxide to form magnesium carbonate, this substance has a buffering effect on the PH value, reduces the dissolution rate of zinc in the anode area, inhibits the generation of zinc oxide, magnesium promotes the formation of dense corrosion products, reduces the diffusion rate of dissolved oxygen, thereby reducing the rate of oxygen reduction in the cathode area. Among them, magnesium ions and oxygen ions undergo redox reactions, and the “white rust” protective layer formed on the scaffold achieves automatic repair. Therefore, in the case of damage to the coating cutting, stamping, section, etc., the magnesium ion redox reaction will migrate to the damaged part of the coating to form a dense protective film of magnesium carbonate, which is dense and not fatal! So as to achieve automatic repair.
3. [Corrosion resistance] – the corrosion resistance of zinc-aluminum-magnesium material is 5-10 times stronger than that of traditional hot-dip galvanizing; The traditional hot-dip galvanized coating has many times, and the exposed part will produce red rust in the initial stage of corrosion, and the red rust area will increase with the extension of corrosion time. The zinc-magnesium-aluminum coating is rarely a small amount, and the exposed part will form a dense protective film “white rust” in the initial stage, and the dense protective layer formed on the stent will achieve self-healing effect. Therefore, compared with traditional products, zinc-aluminum-magnesium coating can achieve better corrosion resistance with reduced coating adhesion, saving materials, time and trouble! It has better protection ability for the cutting edge of the steel plate, the welding part and the part of the plating damage caused by severe deformation.
4. [Long life] – the life of zinc-aluminum-magnesium seismic bracket is about 50 years; The traditional hot-dip galvanizing is only twenty or thirty years, while the zinc-aluminum-magnesium seismic bracket has a service life of up to 50 years due to the super corrosion resistance of the ordinary hot-dip galvanized sheet and the automatic repair effect of the cutting section.