How to Quickly Replace a Zirconia Nozzle?
Oct 22, 2025
Zirconia nozzles are mainly used in the continuous steel casting process. As a key component in molten steel pouring, they play a crucial role in improving production efficiency, reducing costs, and enhancing product quality. However, the service life of zirconia nozzles is limited, and once they can no longer function properly, a quick replacement is necessary.
The following outlines the procedure for the rapid replacement of zirconia nozzles:
1. Preparation
Confirm the need for replacement:
Before replacement, verify whether it is necessary to replace the zirconia nozzle - for example, when the nozzle has suffered severe erosion or damage, or when the molten steel flow rate needs adjustment.
Prepare tools and equipment:
Ensure all required tools are ready, such as wrenches, screwdrivers, pneumatic springs, etc. The work area should be well-lit and properly ventilated.
Shut down related equipment:
Before replacement, turn off any connected equipment, such as the continuous casting machine, to ensure safety during the procedure.
2. Removal of the Old Nozzle
Locate the old nozzle:
Identify the exact position and connection structure of the existing nozzle.
Disassemble the connecting parts:
Use appropriate tools (e.g., wrenches) to remove bolts, nuts, and other components securing the old nozzle.
Remove the old nozzle:
Gently remove the old nozzle, ensuring all safety precautions are observed.
3. Installation of the New Nozzle
Clean the mounting surface:
Use a suitable cleaning agent or a soft cloth to thoroughly clean the installation area, removing any dust, grease, or debris.
Position the new nozzle:
Place the new zirconia nozzle in the correct position, ensuring proper alignment with the connecting components.
Connect the new nozzle:
Secure the new nozzle using bolts, nuts, and other fittings. Tighten the bolts appropriately-neither too tight nor too loose-to ensure stability.
Inspect the connection:
Check that all connections are firm and that the new nozzle is installed correctly.
4. Commissioning and Inspection
Start up the equipment:
After confirming correct installation, restart the relevant equipment, such as the continuous casting machine.
Check flow stability:
Observe the molten steel flow rate to ensure it is steady and meets production requirements.
Check for leaks:
Inspect the nozzle and its connections for any signs of leakage. If leakage is detected, take immediate corrective action.
During the replacement process, always follow relevant standards and safety procedures to ensure proper and safe operation. In addition, to extend the service life of the zirconia nozzle and maintain its performance, regular inspection and maintenance should be carried out as part of routine operation.
Anyang Changtai Silicon Industry Co., Ltd. is a comprehensive manufacturer specializing in the design, processing, and sales of zirconia high-temperature products. If you require zirconia high-temperature products, please email us at: zhang@ayctgy.com. We will respond to your inquiry promptly upon receipt.
