PREHEATING UNIT OPENING/CLOSING DEVICE WHICH OPENS A PREHEATING UNIT DURING A PREHEATING PROCESS AND CLOSES DURING A CONTINUOUS CASTING PROCESS AND A TUNDISH COVER INCLUDING THE SAME

摘要

PURPOSE: A preheating unit opening/closing device and a tundish cover including the same are provided to prevent decreases in the interior temperature of a tundish and the temperature of molten metal by efficiently closing a preheating unit after preheating.;CONSTITUTION: A preheating unit opening/closing device comprises a fixed pipe(100) which is inserted into a preheating unit and penetrated from top to bottom, a movable pipe(200) which is inserted into the fixed pipe and moved up and down along the fixed pipe, a stopper(300) which is protruded on the upper side of the exterior wall of the movable pipe, and an elastic member(400) which is installed between one side of the stopper and the top surface of a tundish cover to elastically support the movable pipe.;COPYRIGHT KIPO 2012