COMPOSITE ELECTRODE FOR ARC FURNACE

摘要

To extend the useful life of an arc furnace composite electrode the upper or non-consumable section comprises a heavy-walled tubular graphite body (7) with a sealed inner bore, a hollow nipple (1), a central coolant supply pipe (6) and metal header assembly (3). If the upper section fails, it is disassembled, a new graphite upper section assembled with the metal parts, and the former upper section is utilized as a lower or tip section which is consumed in the normal fashion.