Hot-dip galvanizing is a rather long process, but, in addition, it is an excellent way to protect the product from corrosion for a long time. Past this procedure items, among other things, for fifty years or more (depending on the degree of aggressiveness of the environment) do not need painting, as they have developed the ability to quickly heal themselves appeared on the surface of the damage. Moreover, hot-dip galvanizing can be used even in cases with large-size products, without disassembling them into parts.
Before actually galvanizing the grid has to pass a preparatory stage. It is consistently degreased, etched with hydrochloric acid, washed, fluxed, washed again, and then dried and cooled to the desired temperature. After that, the product can go to the main shop.
In the main room of the grid is placed in one of the huge baths, which is filled with hot zinc, for a period of three to ten minutes, depending on the size. Usually baths are suspended on strong hooks, or placed in carts on wheels for quick movement on the shop floor. A special rotating drum allows you to evenly distribute the zinc coating over the entire surface of the product, as it should enveloping every detail. After some time, the grid is pulled out, and then sent to dry: first in the open air, then in the warehouse. This completes the hot-dip galvanizing process.
A special system monitors the level of temperature in the room, and, in addition, controls the level of emission of harmful substances, in case of danger, giving the alarm. All procedures are controlled remotely using an electronic shield located in the next room, so that the process can be called completely safe.