Metering Nozzle for Tundish
Product Name: Metering Nozzle for Tundish
Product Description
The tundish metering nozzles have precise shape and dimensions, better thermal shock resistance, no cracking in service, good corrosion and erosion resistance and long life for continuous casting.
HBYRE series of metering nozzle 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. HIMC 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.
Main Properties of Zirconia Inner Core
Brand | Z65 | Z70 | Z80 | Z85 | Z94 | Z95 |
ZrO2＋CaO（%）≥ | 64 | 69 | 79 | 84 | 93 | 94 |
BD（g/cm3）≥ | 3.6 | 3.7 | 3.9 | 4.0 | 4.3 | 4.3 |
AP（%）≤ | 23 | 23 | 23 | 23 | 21 | 21 |
CCS（MPa）≥ | 80 | 80 | 80 | 80 | 100 | 100 |
Refractoriness（℃）＞ | 1790 | 1790 | 1790 | 1790 | 1790 | 1790 |
Main Properties of Alumina Sleeve
Brand | Al65 | Al75 | FO | AMC65 | FT |
Al2O3（%）≥ | 65 | 75 | 75 | 65 | 80 |
MgO（%）≥ | － | － | 10 | － | |
C（%）≥ | － | － | 3 | 5 | 3 |
BD（g/cm3）≥ | 2.3 | 2.4 | 2.8 | 2.9 | 3.0 |
AP（%）≤ | 25 | 25 | 12 | 10 | 10 |
CCS（MPa）≥ | 60 | 60 | 60 | 40 | 60 |
.Packaging: Export wooden case.
Handling & storage: Always move or store under dry conditions.
Especial note: Various shapes and dimensions are available to meet customers’ needs.
Tundish metering nozzles consist of upper nozzle (stationary nozzle) and lower noozle (exchangeable nozzle).
Upper Nozzle is located within tundish lining and transfer the molten steel to controlling exchangeable nozzle, which determine the steel flow. Upper nozzle incorporates with a ultra high density zirconia insert. The zirconia insert provides excellent erosion resistance and extended casting sequence times.
Lower nozzle (exchangeable) is located within assembly that is fixed to the bottom of tundish. The design of 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 prior to use.
It was manufactured by cast process of fine grain alumina method and 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).
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