Tundish metering nozzle&Zirconia insert

The metering nozzle for the tundish is made of calcium oxide and ZrO2 as the main raw materials through the combined grade of raw materials, and processed by high high-temperature burning technique for the nozzle. It has good thermal shock resistance, anti-corrosion, long service life, etc. The metering nozzle for the tundish is applicable for the continuous casting of small blocks, especially a highly efficient continuous casting machine.

The feature:

1. Low expansion, Superior resistance to erosion/corrosion and thermal shock cycling.
2. Extended casting sequence times.
3. Controlled and stable casting speed.
4. Resistance to oxygen lancing.
5 Changeless diameter and lasting long.

Tundish metering nozzles consist of an upper nozzle (a stationary nozzle) and a lower nozzle (exchangeable nozzle).

The Upper Nozzle is located within the tundish lining and transfers the molten steel to the controlling exchangeable nozzle, which determines the steel flow. Upper nozzle incorporates an ultra-high-density high density zirconia insert. The zirconia insert provides excellent erosion resistance and extended casting sequence times.

Lower nozzle (exchangeable) is located within the assembly that is fixed to the bottom of the tundish. The design of the lower nozzle can vary according to the system manufacturer. Zirconia insert can be supplied for in-site assembly into metallic holding blocks, where cementing, grinding, size banding, and on-site drying are required before use.

It was manufactured by the cast process of fine fine-grain alumina method and the press process.Upper nozzle and lower nozzle are suitable for several nozzle changer systems such as Concast (CNM), Danieli (FNC), Interstop (MNC), Krosaki (OTNC), and Vesuvius (CNY/SYS120).