Tundish Nozzle

Tundish Nozzle is an isostatically pressed Alumina-Graphite refractory which is intermediate between the Monoblock Stopper and the Sub Entry Shroud. The stopper sits on the Tundish Nozzle to close the flow of steel from tundish to the mould. The tundish nozzle as a part of continuous casting refractories was introduced in order to accommodate hot changing of Sub Entry Shroud for long sequence casting.

Good performance of the nozzle is crucial for steel flow parameters and achieving high tundish sequence, along with clean shut-off of steel flow with the stopper.

Depending on the tundish design the tundish nozzle can be of different shape and size.

Tundish Nozzle
Mono-Nozzle

Mono-Nozzle For Tube Changer System

Slab casters with Tube Changer system uses Mono-Nozzle in combination with Sub Entry Shroud and Monoblock Stopper. The Mono-Nozzle is custom designed as per customer requirement based on throughput, steel grades, etc.

The seat of the Mono-Nozzle is designed to match with the Monoblock Stopper for clean shut-off at the end of casting.

The Mono-Nozzle has special arrangement for Argon gas distribution to the seat and the plate region. Argon delivery in the seat is used to keep the stopper contact area free from alumina deposits. The argon delivery to the plate region is used to maintain a positive pressure between the Mono-Nozzle and the Sub Entry Shroud, which ensures a perfect seal preventing any air aspiration.