The galvanizing method was patented back in the 19th century. Over time, zinc has proven its performance as the best coating material that protects steel products from corrosion. Several zinc application technologies have been developed to this date.
Hot-dip galvanizing is carried out by submerging the workpiece in molten zinc at a temperature of about 450 °C. A reaction between iron and zinc takes place to form a zinc-iron alloy. The thickness of the coating layer depends on the time of immersion of the object in liquid zinc, the temperature of the zinc and the Si content in the steel. By varying the immersion time, it is possible to adjust the thickness of the zinc layer within a certain range and provide a coating that meets the customer's requirements.
Karstās cinkošanas priekšrocības ir ilgtermiņa aizsardzība, pieejamas cenas un spēja nocinkot arī iekšējās virsmas.
Zn metals uzstādīta lielākā cinkošanas vanna Latvijā. Vannas izmēri: 10500 x 2900 x 1400 mm (garums, dziļums, platums). Spējam nocinkot metāla konstrukcijas līdz pat 13 m garumā!
Zn Metals is the only hot-dip galvanizing company in Latvia that offers its customers passivation, which is a process providing additional metal protection.
Passivation forms a post-treatment layer that protects metal from zinc oxidation known as 'white rust'. The process uses water with added inorganic materials. Passivated structures retain their shine and fresh galvanized look for longer. Passivation is widely used to treat metal before painting.
Shot blasting is used to prepare the surface before galvanizing and painting. In order to make the structure preparation process easier for customers, Zn Metals will soon include shot blasting in its range of services.
Post-galvanizing painting or the so-called Duplex system provides additional protection in aggressive environments or is used as an aesthetic solution. In the near future, Zn metals also plans to offer its customers the painting service.