Throughout the world, Graphite COVA is the only producer and supplier of protective coating for graphite electrodes. This sophisticated product gives excellent antioxidation properties to graphite electrodes and reduces the specific consumption of graphite considerably. Coated electrodes are used for the production of electric steel as well as for manufacturing non-metallic products in electric arc procesing.
The protective coating consists of several layers and is added to the electrode surface in a complicated, multilevel production process. A special characteristic of the coating technology is the electric arc treatment of every single layer. The latest patent dates from the year 2000.
Depending on the specific operation conditions of the arc furnace, different types of coating are offered (black or white).