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Zirconium nozzle
There are many kinds of nozzle, including zirconium sizing nozzle. Zirconium siz
There are many kinds of nozzle, including zirconium sizing nozzle. Zirconium sizing nozzle is widely used in billet continuous casting tundish. The performance of nozzle will directly affect the time of continuous casting. Reliable performance of sizing nozzle is very important for providing high quality molten steel for billet caster and successful casting operation. It can not only increase the number of continuous casting, but also directly improve the production efficiency. Therefore, the calibrated nozzle must have good scour resistance, corrosion resistance and thermal shock stability, and can not be blocked, cracked and enlarged during use.
At present, high-purity zirconia with calcium oxide or magnesium oxide as stabilizer is usually used in the production of zirconium-based sizing nozzles in China. The content of zirconia is generally controlled at about 95%. The corrosion resistance and scouring resistance of calcium oxide to molten steel are not high. Magnesium oxide is prone to fall off when it is used at high temperature for a long time. Using fused magnesium oxide partially stabilized zirconia, fused calcium oxide partially stabilized zirconia and zircon as raw materials, adding certain additives and binders, rationally adjusting the particle size distribution of raw materials, optimizing the forming process, adjusting the stability rate of zirconia in products, and changing the performance of zirconium stable diameter nozzle.
When the moulding pressure is about 300 MPa, the bulk density of zirconium sizing nozzle is larger, the porosity is lower, and there is no crack in zirconium sizing nozzle after moulding. The moulding effect is good. Additives can promote the sintering of zirconium sizing nozzle, which is conducive to the increase of density and the decrease of apparent porosity, and improve the thermal shock resistance stability. Obvious. I hope you can deepen the understanding of zirconium sizing nozzle through the introduction of the above information, and through the rational application of zirconium sizing nozzle, achieve good results. Of course, if you want to buy zirconium sizing nozzles, or other types of nozzles, you can also call our hotline to consult the purchase.
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