CONTINUOUS CASTING OF REACTIONARY METALS USING A GLASS COVERING

摘要

A seal (10) for a continuous casting furnace (12) having a melting chamber (16) with a mold (20) therein for producing a metal cast includes a passage (48) between the melting chamber and external atmosphere (44). As the cast moves through the passage, the cast outer surface and the passage inner surface define there between a reservoir (62) for containing liquid glass or other molten material to prevent the external atmosphere from entering the melting chamber. Particulate material fed into the reservoir is melted by heat from the cast to form the molten material. The molten material coats the cast as it moves through the passage and solidifies to form a coating to protect the hot cast from reacting with the external atmosphere.