The Cedynia copper wire rod plant, located in Orsk, in the Lower Silesia region of Poland, is a modern rolling mill that transforms electrolytically refined cathode copper from the Głogów and Legnica copper smelter/refineries as well as copper scrap into copper wire rod and the highest quality oxygen-free copper rod. These are the most highly processed copper products offered by KGHM, products that meet the demands of the most demanding customers. The Cedynia copper wire rod plant offers the following products:
- 8 mm copper wire rod for enamelled cables, thin and ultra-thin wires, wire bunches of up to Ø 0.1 mm and for telecommunications and power cables;
- 8 mm oxygen-free copper wire rod for the production, among others, of microwires up to 20 µ in diameter, enamelled cables, fire-resistant safety cables, and audio and visual cables.
The Cedynia copper wire rod plant commenced production on 9th May 1979 based on Belgian Contirod® technology for the continuous melting, casting and rolling of copper wire rod, having a production capacity of around 100 thousand tonnes annually. In the years 1994-2004, in order to meet the increasing demands of the European market for high-quality copper wire rod, Cedynia more than doubled its production, and by 2004 production exceeded 230 thousand tonnes.
The products produced by the Cedynia copper wire rod plant are manufactured in two production lines – Contirod and Upcast.
In the Contirod process copper wire rod of fine-grained structure with even oxygen distribution is produced. In stage one of the production process, cathodes are melted in an Asarco furnace. The liquid copper is transported to a settling furnace from where it is directed into a Hazelett casting machine, where it crystallises into a strip of 60 x 122 mm in diameter. This strip of copper is rolled to obtain the final product, 8 mm diameter wire rod, packed in 5 tonne coils and secured with a layer of synthetic wax to protect the wire rod from secondary oxidation.
In the Upcast process, Cu-OFE wire is produced in a structurally cast state and with an even cross-sectional structure. Oxygen-free copper wire of 8 to 25 mm diameter is obtained in a process that comprises a cathode loading system, a melting furnace, a settling furnace, a casting machine with crystallisers for vertical casting and coiling machines.