APPARATUS FOR OPENING AND CLOSING BOTTOM TAP OPENING IN VACUUM INDUCTION MELTING AND CASTING FURNACE

摘要

PURPOSE: To obtain a highly reliable apparatus for opening and closing a bottom tap opening, in which undesirable heating of a plug rod is avoided and contamination with a misty matter due to an incorporated body is blocked entirely in the furnace. ;CONSTITUTION: A closing body 7 made of ceramic material is connected via levers 8, 10 to a coupling element, which has a compression spring to limit the maximum closing force of the closing body 7, and is displaceable by an electric motor drive 17.;COPYRIGHT: (C)1994,JPO