B - Operations – Transporting – 22 – D
Patent
B - Operations, Transporting
22
D
22/80
B22D 11/00 (2006.01) B22D 41/24 (2006.01)
Patent
CA 1057930
ABSTRACT OF THE DISCLOSURE Disclosed is an arrangement for changing a pouring tube on the pouring nozzle of a metallurgical vessel, particularly on the sliding gate nozzle of a tundish in a continuous casting plant, comprising at least two pouring tube holders which can be alternately moved underneath the nozzle, attached thereto and removed again. The pouring tube holders are provided at the ends of swivel arms which are located by stop means in correct position for attaching the pouring tube and adapted to swing about a pivot axis parallel to the nozzle axis. The pouring tube holders and/or their swivel arms are provided with displacing means for moving them in the required direction for attaching the pouring tube. In such an arrangement only the end of the swivel arm which is in the operative position extends into the critical region between the tundish and the mould and all other parts of the arrangement are outside the direct range of the heat radiated during the pour. The arrangement can therefore be safely and satisfactorily operated. Further- more, the region where casting proceeds remains substantially free from major obstructions so that clear observation is possible. Apart from this, the starting position from which the pouring tube is applied to the nozzle assembly is automatically reached and the pouring tube can then be tightened by the displacing means without loss of time. Conveniently the swivel arms may be mounted ore above the other on a common pivot pin and the free end of each arm may contain a carrier for an axially movable holder which holds the pouring tube so that it cannot rotate, the carriers being horizontally coplanar by reason of one or both swivel arms being formed with a suitable vertical offset. This arrangement is not only of simple design but it also ensures that the pouring tube will always be correctly positioned in relation to the mould.
268181
Meier Ernst
Muller Hans
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