Share
Print
The CNC is the most user friendly and safe Nozzle Changer device for billet, bloom and beam blank casters. It is now also available with a third refractory plate for shroud connection to protect the steel quality for demanding grades.
CNC Protect Features
- Limit steel stream re-oxidation through shrouding
- Allow nozzle plate changes without shroud removal
- Allow shroud change without strand closure
- Easy adaptation on existing CNC mechanism
- Safe emergency shut-off with stand-by blank plate
- Optional argon ring inerting around 3rd plate and shroud
Process improvements
- Allows use of mold powder with submerged shroud, resulting in better product surface quality
- Final product defects reduced with strong reduction of N2 and O2 pick up
- Keep all advantages of CNC like re-stranding and flexibility
- The easy setup allows for late operating decision to switch from open stream casting into shrouded casting
- Allow casting continuation during same sequence in open stream while shrouded adaptation kit being removed
- Allow a start up in open stream or directly with a shroud connected
VESUVIUS CNC Protect (basic frame)
| Model | Typical bore (mm) |
Stroke (mm) |
Dimensions (mm) |
Weight (kg) |
| CNC | 12 to 23 | 120 | 441 x 320 x 150 | 17 |
VESUVIUS CNC Protect (kit and third plate)
| Model | Typical bore (mm) |
Stroke (mm) |
Dimensions (mm) |
Weight (kg) |
| CNC Protect |
13 to 24 | N.A. | 441 x 356 x 160 | 8.2 (no plate) |
Main mechanical components
Refractory components
- Upper nozzle plate designed to avoid exposure to deposit of steel splashes
- Refractory components available for open stream casting and alternative ‘casting tube’ attachment