Debica of Hot-dip Galvanizing and Galvanizing Department
Operating parameters:
- Dimensions of galvanizing baths:
7,000 x 1,500 x 2,800mm (L x W x D)
- The maximum dimensions of the galvanized working elements: 6,800 x 1,400 x 2,400 mm
- The maximum unit weight of the item - to 3 tonnes.
We galvanize a very diverse assortment - from steel building structures, elements of road infrastructure, tanks and construction accessories, gratings, fence details, gates, lighting poles and electric lines. The obtained zinc coatings have excellent resistance to corrosion and abrasion. The excellent parameters are ensured by the use of appropriate high quality materials and the manufacturing process, refined over years of experience. We provide high quality zinc coatings according to DIN EN ISO 1461.
The essence of the process is based on the appropriate physicochemical preparation of the steel surface (degreasing, pickling, drying) and immersing elements in a zinc molten alloy at a temperature of 450 °C - 460 °C. As a result of the diffusion process of the zinc with the steel, alloy layers are formed, containing a different ratio of the two components, in which the outer coating layer has a galvanizing bath composition used in the process. The obtained coating, after cooling in water has a high mechanical resistance and aesthetic appeal.
Properly performed zinc coatings, depending on the aggressiveness of the environment in which it is operated, can last from 10 to 100 years. Hot-dip galvanizing is a solution that in the current era of corrosion protection meets the requirements of durability, aesthetics and ecology.
Why hot dip galvanizing?
Corrosion protection obtained by galvanizing ensures long-term protection without the need of renovation. The zinc coating that seals and accurately covers the outer and inner surfaces of the element, its edges, recesses and corners – doubly protects steel. The zinc coating is inextricably linked with the surface of the alloyed steel, prevents its oxidation, while the hardness of the individual layers protects against mechanical damage. The process of galvanizing, although it is fast, protects the surfaces of the steel for many years. Galvanizing is currently the most effective corrosion protection technology that meets the high standards of durability, aesthetics and ecology.
Coating thickness
In the hot-dip galvanizing process a coating is obtained with an average thickness of 70 to 150 micrometers. This thickness suffices to protect steel against corrosion for decades. The average life of the zinc coating is 30-50 years.
The thickness of coating is measured in micrometers, or is given as coating weight in g/m2.
The minimum recommended coating thickness, depending on the galvanised elements from which they are made is determined in the standard PN-EN ISO 1461:
| Thickness of steel - t [mm] |
Minimum average thickness of the coating [μm] |
|---|---|
| t > 6 | 85 |
| 3 < t < 6 | 70 |
| 1,5 < t < 3 | 55 |
| t < 1,5 | 45 |
