The zirconium sizing nozzle is made of stabilized zirconia and imported natural oblique zircon after being stabilized by a special process, and then formed by high-pressure molding and high-temperature firing. The nozzle model can be set according to the different steelmaking environment and use requirements of users. Zirconia sizing nozzle can be divided into two types,the composite monolithic nozzleand the insert nozzle.Imported zircon sand and stabilized zirconia are used for themono-nozzle.For the insert nozzle,stabilized zirconia is adopted for the core and highgrade bauxite is the starting material for the sleeve.Both nozzles have good thermalshock stability,strong resistance to erosion and spalling.
Zirconium Sizing Nozzle Advantages:
The fixed diameter nozzle is made of high corrosion-resistant refractory material, and its diameter remains unchanged throughout the continuous casting process. It has the characteristics of high fire resistance, good thermal shock performance, erosion resistance, corrosion resistance, small diameter change, and long service life. The core of zirconia is mainly made of zirconia as the raw material, which is resistant to high temperature, strong corrosion, no obvious diameter expansion, no deviation, dispersion phenomenon, can withstand rapid cooling and heat, and has no drift tube rupture phenomenon. The zirconium sizing nozzle has the characteristics of high strength, good thermal vibration performance, corrosion resistance, erosion resistance, low expansion rate, and long service life.
Zirconium Sizing Nozzle Function:
The sizing nozzle is a functional device made of high-temperature structural ceramics installed at the bottom of the tundish for continuous casting. It plays the role of controlling the flow of molten steel. It must have excellent thermal shock resistance and corrosion resistance to ensure that molten steel can pass The diameter nozzle evenly and stably flows into the crystallizer, so as to ensure the normal progress of continuous casting. The reliable performance of the sizing nozzle is very important to provide high-quality molten steel for billet continuous casting machines and successful casting operations. It not only increases the number of continuous castings, but also directly relates to the improvement of production efficiency. Zirconium sizing nozzle is mainly used for continuous casting of tundish billets, blooms, rectangular billets, and small slabs for pouring steel.
