Carbon electrodes and its connection elements with directionally structured contact surfaces

摘要

The electrode rod element is provided by a carbon electrode (1) with an internally threaded blind bore formed in each end face (3) and a threaded carbon nipple, used for securing 2 successive carbon electrodes together, fitted into the threaded blind bore at one end of the carbon electrode. The end faces of the carbon electrode are structured, for formation of an ideal contact surface, by providing scale-type projections with a height of between 3 and 100 mm, a pressure force of the order of 0.1 N/ sqmm provided between the contact surfaces by the screw connection. An Independent claim for adjacent elements of an arc oven electrode rod is also included.