초록 ▼

A water-cooled electrode holder for use in electric furnaces, comprising a base and a bowl secured to the base for encompassing and supporting a vertical cylindrical electrode, is formed by rolling from a thick copper sheet which has first been drilled with a plurality of intersecting deep holes. Th

A water-cooled electrode holder for use in electric furnaces, comprising a base and a bowl secured to the base for encompassing and supporting a vertical cylindrical electrode, is formed by rolling from a thick copper sheet which has first been drilled with a plurality of intersecting deep holes. The plate is drilled when flat and then bent to horseshoe configuration, the holes being filld with sand to keep their shape during bending. Plugs are then inserted to block the intersections of certain of the holes but to leave a single circuitous passageway through the bowl, for the passage of cooling water.

대표청구항 ▼

A method of making an electrode holder of the type comprising a U-shaped slab of metal with a circuitous passageway therethrough for the flow of cooling water, comprising blind drilling a plurality of straight holes at right angles to each other through two adjacent edges of a flat slab of metal wit

A method of making an electrode holder of the type comprising a U-shaped slab of metal with a circuitous passageway therethrough for the flow of cooling water, comprising blind drilling a plurality of straight holes at right angles to each other through two adjacent edges of a flat slab of metal with a plurality of said holes intersecting each other, bending said flat slab to U-shape in a direction such that the holes extending in one direction are bent to U-shape but the holes at right angles thereto remain straight and to an extent such that the legs of the U-shaped slab remain flat so that portions of the holes bent in a U-shape form straight passages, plugging the ends of said straight passages, and plugging certain of said holes that remain straight intermediate their length between certain adjacent U-shaped holes, in such a pattern as to leave a single circuitous passageway through the slab having an inlet end and an outlet end opening edgewise through the slab.