| 摘要 |
The invention is technically constituted such that the outer peripheral surface of the one-body assembly of the plate brick and submerged nozzle is enclosed directly by a one-body metal casing, that the plate brick accommodated in a metal casing is joined through mortar or packing with the dowel portion of the submerged nozzle accommodated in another cylindrical metal casing, and the two metal casings are welded together, that the plate brick and the submerged nozzle are formed as a one-body refractory block, this block is enclosed by the one-body metal casing whereby said one-body refractory block may be mounted with the one-body metal casing through castable refractory, that said one-body refractory block may be combined with a hetero-material refractory, or that a porous brick is involved between the plate brick and the submerged nozzle so as to be mounted in a one-body metal casing whereby said porous brick may be provided with a feed and discharge pipe piercing through the metal casing. Further, the invention is characterized in that a steel sleeve is of such shape that can fit and mount an assembly of the plate brick and submerged nozzle of a continuous casting slide gate valve apparatus, said steel sleeve has a shoulder (3) in the upper portion of the submerged nozzle side, and the submerged nozzle and the plate brick are fitted and mounted together through a pressing force-giving (4) ring having a desired thermal expansion coefficient in the inner peripheral surface of said shoulder (3). Furthermore, the invention is characterized in that the steel sleeve mounted with a continuous casting plate brick (1) and the pressing force-giving ring (4) are internally provided in the shoulder (3), and the steel sleeve (10a) mounted with a submerged nozzle (2) is fitted and welded together with them. Alternatively, the shoulder (3) of said steel sleeve may be crossed straight with or inclined to the axis of the submerged nozzle, or an aircooling jacket (12) may be provided in the outer periphery of the steel sleeve.
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