The hot zinc coating unit manufactured by HIRTZ (Germany) was put into operation at the R.U.E. "Rechitsa metizny plant" in 2003. The main function of this unit is zinc coating of small products, first of all nails. But the technical conditions allow to make zinc coating of the constructions with the dimensions, which do not exceed 900x900x2500 mm (height x width x length) and with the weight of up to 150 kg.
The preliminary scrutinizing of the specific product (metal thickness, presence of the hidden cavities etc.) is necessary for the order placing.
The process of hot zinc plating includes:
- preliminary chemical treatment (fat extraction, washing, etching);
- repeat washing and fluxing (dipping into the solution of ammonium chloride salt and zinc chloride salt);
- dipping of the products into molten zinc with the temperature of +540°C … +550°C;
- removal of the zinc surplus from the surface of the ready product.
The centrifuge is used for the products of small dimensions, the mechanical method is used for medium sized products. The hot zinc coating unit secures the thickness of the zinc layer equal to 70 - 100 micron. The productivity of the hot zinc coating unit comes to 250 tons per month.
The high quality of the zinc coating correspond with the European standard and guarantees the product operation up to 50 years.
The price for the services of hot zinc coating of metal goods is determined on the contractual basis after presentation of the drawing by the customer. |
