LMM TOTAI offer a complete product and service portfolio for all steelmaking processes.
From basic and non-basic bricks and mixes, slide gate plates, isostatic products and prefab components to special machinery, mechanisms and repair systems.
Zirconia Metering Upper Nozzles
Zirconia Metering Upper Nozzles
The application of this products accomplish the quick exchange of SEN, extends service life of tundish and decreases production cost. The bore of tundish nozzle is sintered zirconia and wholely inlayed , which has better anti-corrosion and anti-erosion property, and extends working duration of tundish and have better cooperation with stoppers. Therefore it can meet different continuous casting levels.
1 .Alumina-graphite seat with perfect anti-thermal shock property.
2.The bore adopts sintered zirconia materials with perfect anti-corrosion and anti-erosion property
3.The end part adopts stablized zirconia product, has better anti-erosion property ,and also perfect for steel flow control.
| Items | Body | Slag line | |
| Chemical Composition | Al2O3 | ≥65 | |
| ZrO3 | ≥85 | ||
| Bulk Density | ≥2.6 | ≥3.8 | |
| Apparent Porosity | ≤18 | ≤13.5 | |
| Cold Crushing Strength | ≥25 | ≥40 | |
| Modulus Rupture-Room Temp | ≥8 | ≥7 | |
| thermal shock resistance(sequence) | ≥5 | ≥5 | |