ELECTROMAGNETIC STIRRING TYPE MOLTEN METAL TAPPING DEVICE

• Main Author: OKUBO KUNIO
• Format: Patent
• Language: English
• Published: 31.08.1989
• Subjects: CASTING; CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES; PERFORMING OPERATIONS; POWDER METALLURGY; TRANSPORTING

PURPOSE:To enable the smooth control of the transfer of a molen metal and the replenishment of the transferred portion by providing an inductor unit to the outside circumference of a stored molen metal conduit and forming a low- pressure part and a high-pressure part in the molen metal conduit. CONSTITUTION:A stirrer 13 consisting of an electromagnetic coil disposed on the outside circumference of the molen metal conduit 11 rising upward from the lower part of a ladle, etc., for storing the molen metal is connected to an AC power supply of a commercial frequency. The molen metal itself which is an internal electrical conductor is rotated by electromagnetic induction and is pressed toward the outside circumference of the conduit by centrifugal force, by which the high-pressure part is formed in the inside circumferential part of the conduit and the low-pressure part along the axial line. The molten metal is admitted into the low-pressure part generated in the conduit 11 by utilizing the pressure difference by the head of the molen metal in a storage tank 1, by which the transfer of the molen metal in the conduit 11 and the replenishment of the transferred portion thereof are executed in the smoothly controlled state.