HEATING ELEMENT AND ELECTRIC FURNACE EQUIPPED WITH SUCH AN ELEMENT

摘要

The heating element is made of a refractory material resistant to oxidation, and comprises two hollow hemicylindrical parts disposed face to face by their concave portions at a slight distance from each other. These two parts are supplied with electric current at one of their ends and are connected together at their other end by a common cylindrical part. The exterior radii of the hemicylindrical parts and of the common cylindrical part, and the thicknesses of these parts, as well as the distance between the corresponding opposing edges of the two hemicylindrical parts, all decrease from the end by which the current is supplied to the end which is connected together by the common cylindrical part.