Brief Introduction
Metering NozzleAMR series of metering nozzles adopt mosaic pattern - the zirconia’s inner core and alumina sleeve including typical nozzle and fast-changeable nozzle. Both feature high refractoriness, low expansion superior resistance to erosion/corrosion and thermal cycling, etc.
AMR nozzles with fast-change system could be replaced easily to ensure consistent steel flow. They have been widely used in long-life tundish system in many I&S works at home and abroad, demonstrating excellent application results.
Zirconia Inner Core | ||||||
ZrO2 % Min. | 64 | 69 | 79 | 84 | 93 | 94 |
Bulk Density g/cm3 Min. | 3.6 | 3.7 | 3.9 | 4.0 | 4.3 | 4.3 |
Apparent Porosity % Max. | 23 | 23 | 23 | 23 | 21 | 21 |
Cold Crushing Strength MPa Min. | 80 | 80 | 80 | 80 | 100 | 100 |
Refractoriness MPa Min. | 1790 | 1790 | 1790 | 1790 | 1790 | 1790 |
Alumina Sleeve Block | |||||
Al2O3 % Min. | 50 | 65 | 75 | 80 | 80 |
C % Min. | 3 | ||||
Bulk Density g/cm3 Min. | 2.1 | 2.3 | 2.4 | 2.8 | 3.0 |
Apparent Porosity % Max. | 25 | 25 | 25 | 25 | 10 |
Cold Crushing Strength MPa Min. | 40 | 40 | 40 | 40 |
40 |