Korf-stahl Ag.

Korf & Fuchs Systemtechnik Gmbh

William E Schwabe

Emil A Elsner

Rudolf Kasper

Rudolph Kasper

A fluid-cooled holder for the tip of an electrode of an electric arc smelting furnace, having a cylindrical holding portion which can be secured to an electrode support arm, a metal cooling system which is secured to the holding portion and which carries a screw-threaded portion for screwing on the electrode tip, and also having a tubular heat screen which is disposed around the cooling system at a spacing and which comprises a metal tube (11, 11a) which is electrically insulated with respect to the current-carrying cooling system (3, 3a) and which can be sufficiently cooled, by way of a refractory substance (17, 17a) between the cooling system and the metal tube, for the temperature of the metal tube to be kept to a value below the softening temperature of the material of the metal tube, when the holder is used in an electric arc smelting furnace.

Fluid-cooled holder for an electrode tip

An electrode for electric arc furnaces, in particular for production of iron and steel, comprising a liquid-cooled upper portion, which may be inserted into an electrode holder, a lower portion forming the electrode tip being detachably fastened to the upper portion, which upper portion contains a conduit system for the cooling liquid protected by a fire-proof material, by way of which conduit system the electric current of the arc electrode may also be conducted. Heat conducting projections covered by the fire-proof material are provided on the outer surface of the conduit system facing the furnace chamber, while an electromagnet for producing a magnetic field is disposed in the region of the fastening point of the electrode tip to cause the arc on the electrode tip to move.

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Middleburg Heights, OH, United States of America

William E Schwabe