Hot galvanizing is a fundamental metallurgical process that occurs when fabricated iron articles are immersed in a bath of molten zinc. The result is one of the most effective, economical and technologically advanced anti-corrosion systems for metal protection.
During immersion, an interpenetration of the zinc and iron occurs, forming a strong, persistent and long-lasting coating, capable of providing excellent and aesthetically pleasing protection against the destructive and not always visible aggression of rust, the greatest enemy of every fabricated iron article.
Hot galvanizing, unlike normal painting, provides complete protection, because it creates a coating that is intimately bonded with the steel. This occurs through the formation of a series of zinc-iron alloy layers that completely cover and protect the product, whether it is located outdoors or indoors.
The electrochemical defence generated by the voltage difference between the two metals ensures that the zinc sacrifices itself slowly over time, saving the iron from corrosion and thus preserving the structure's integrity.
A coating formed in this manner cannot come detached. Even small scratches caused by accidental impacts or damage caused during transport or assembly are protected, thanks to the sacrificial action of the zinc.
Hot galvanizing should not be viewed as a normal material finishing treatment. Its fundamental role is that of an ally in the fight against steel corrosion, and it is important to understand the value of the undeniable benefits it offers.
ZIMETAL is one of the few companies in Europe that has the capability to galvanize your materials using HAl-Ga ® Technology for reactive steel control, in a Class 1 zinc bath using only SHG zinc 99.995% and without the use of metals that are classified as “dangerous”, such as lead and nickel.