Abstract

An immersion nozzle exchanging apparatus and an upper nozzle capable of preventing damage to a plate of the upper nozzle are provided. An immersion nozzle exchanging apparatus is mounted on a lower portion of a molten steel outlet of a tundish. The immersion nozzle exchanging apparatus includes a support and a flap. The support has a support surface to support a lower surface of a plate of an upper nozzle inserted into the molten steel outlet. The flap is rotatable with respect to the support. The immersion nozzle exchanging apparatus further includes a rotation stopper for the flap. The rotation stopper includes a wedge to abut against the flap by projecting to an upper side of the flap, and a bolt connected to the wedge, and enables adjustment of a projection amount of the wedge by adjusting a fastening amount of the bolt.

IPC Classes  ?

• B22D 41/56 - Means for supporting, manipulating or changing a pouring-nozzle
• B22D 41/50 - Pouring-nozzles

Abstract

An immersion nozzle exchanging apparatus and an upper nozzle capable of preventing damage to a plate of the upper nozzle are provided. An immersion nozzle exchanging apparatus 1 is mounted on a lower portion of a molten steel outlet 101 of a tundish 100. The immersion nozzle exchanging apparatus 1 includes a support 3 and a flap 4. The support 3 has a support surface 31 to support a lower surface of a plate 201 of an upper nozzle 200 inserted into the molten steel outlet 101. The flap 4 is rotatable with respect to the support 3. The immersion nozzle exchanging apparatus 1 further includes a rotation stopper 8 for the flap 4. The rotation stopper 8 includes a wedge 81 to abut against the flap 4 by projecting to an upper side of the flap 4, and a bolt 83 connected to the wedge 81, and enables adjustment of a projection amount of the wedge 81 by adjusting a fastening amount of the bolt 83.

IPC Classes  ?

• B22D 41/56 - Means for supporting, manipulating or changing a pouring-nozzle