Tundish Refractories
Tundish Nozzle with ZrO₂ Insert
Tundish nozzle carrying a zirconia insert exactly where the stopper rod meets the bore. That contact point wears fastest and, once it opens up, fine flow control is lost for the rest of the sequence — the insert is what keeps the throttle accurate through a long cast.
Key Properties
| Insert | Zirconia (ZrO₂) |
|---|---|
| Critical location | Stopper-to-nozzle contact point |
| Advantage | Keeps flow control accurate through the cast |
