LenStroyDetal Company has launched a new product type: HD galvanized mesh. Such mesh has some advantages typical for hot dipped galvanized products.
Hot-dip galvanized coatings rank number two in terms of galvanizing products, and the quality and durability of this type of coating is, at the moment, one of the best. However there are problems of ecological safety due to the presence of zinc melt, using chemical methods of surface preparation, while the need to maintain the zinc melt temperature in the range 460 to 4800 C° results in unnecessary energy costs.
The hot-dip galvanizing technology consists of two stages:
- surface preparation for hot-dip galvanizing
- hot-dip galvanizing as such
The surface preparation for hot-dip galvanizing includes the sequence of the following operations: degreasing for surface galvanizing, surface etching, rinse, fluxing and surface drying. GOST 9.402 regulates the metal structures surface cleaning grade after scale and rust removal.
The zinc application is carried out by immersion of prepared dry products in a hot zinc bath, a Fe-Zn alloy appears on the surface, which prevents corrosion. Hot dip galvanizing of wire, steel, pipes, etc. is widely used in the building industry.
Hot-dip galvanizing is used for direct application of hot zinc on a metal product. This process is time-consuming, labor intensive, and very effective. For this purpose, various baths are used. Metal is immersed into these baths for a certain time. This is for the best preparation of the surface for galvanizing. Metal is degreased, etched (in baths with different acids), rinsed, and fluxed. After a completion of all stages drying and galvanizing itself will be started. After such a thorough treatment there is no doubt that the galvanized metal will be protected against corrosion for many years.