Patent ID: 9108245
Filing Date: 2015-08-18
Classification: B22D,B65D

Abstract:
1. A sliding closure for a receptacle containing molten metal, the receptacle including a receptacle base plate and a refractory head part arranged in the receptacle base plate, the sliding closure comprising: a housing frame fastenable to a spout of the receptacle; a movable sliding unit held by the housing frame, the sliding unit having a refractory sliding plate, the sliding unit being movable in a first direction from an open position in which an aperture in the sliding plate aligns with an aperture in the head part to a closed position in which the aperture in the sliding plate does not align with the aperture in the head part and in a second direction opposite to the first direction from the closed position to the open position; a case including a plurality of refractory base plates arranged alongside one another, only one of the refractory base plates in the case being situated in an operating position in a molten metal flow path defined by the sliding closure at any time, the housing frame holding the refractory base plate in the operating position; the refractory base plate in the operating position being adjacent the head part of the receptacle base plate on one side and adjacent the sliding plate on an opposite side; the case being displaceable at least partly within the housing frame while the housing frame is fastened to the spout of the receptacle to cause the refractory base plate in the operating position to be displaced out of the molten metal flow path defined by the sliding closure and replaced by another one of the refractory base plates in the case while the sliding unit is in the open position; and at least one spring element for pressing the sliding plate against the refractory base plate in the operating position and causing the refractory base plate in the operating position to be pressed toward the head part of the receptacle base plate.