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Galvanizing of metal products has successfully found application in areas where it is necessary to protect the material from the negative effects of the environment, where the durability and reliability of metal structures are required.
Hot dip galvanizing is a simple, fairly economical method that has been used for several decades. The service life of galvanized products is increased and amounts to 50 years.
Annually, about 10% of the world's metal reserves become unusable due to corrosion. Zinc has long been used as a material that prevents metal corrosion. For these purposes, tons of zinc are produced annually in the world. Other metals also use aluminum, magnesium, cadmium for corrosion protection of metal products, but zinc still has no competitors in use.
Galvanizing is an environmentally friendly process, as nearly 80% of the material in the world is recyclable. At the same time, zinc does not lose its characteristics and chemical, physical properties. Galvanizing helps to save the natural resources of the planet and our country in particular, since it increases the life of the metal.
Galvanizing is used for various metal products:
- pylons of power lines;
- building materials and structures;
- antenna supports;
- broadcast masts, television towers;
- oad fences;
- scaffolding;
- ighting masts and poles; monumental buildings;
- structural elements of automobile, pedestrian, railway bridges;
- metal structures, buildings, metal forms, etc.
The metallurgical processes that occur during hot dip galvanizing are quite complex. The zinc layer on the metal is formed due to the mutual reaction between these two materials, as a result we get a strong alloy.
Hot-dip galvanizing is carried out in a special bath, where a certain temperature is created. With such a high temperature regime (440-450 C), the galvanizing reaction occurs very quickly. When the metal is removed from zinc, the coating should already have formed, but the internal structure of the product continues to change until it cools completely.
In the modern world, zinc is becoming more widespread, and despite the high cost of materials, quality comes first. This ultimately leads to cost savings due to an increase in the life of metal products.
For many years, consumers can rely on the protective power of zinc. Therefore, hot dip galvanizing is most prevalent.
