Graphite rotor, impeller & shaft

Sialon alternative for graphite rotor, impeller and shaft for degassing in molten aluminium.

The rotor is composed of a sialon shaft with quick or threaded coupling and by the rotor impeller. The rotor geometry is designed for adapting to degassing devices used in furnaces and ladles. The rotor can be used in a wide temperature range: from 650 to 1400° C. The sialon has excellent non-wetting properties and a very long service life compared to graphite rotors and shafts.

The Sialon rotor shaft impeller is designed to inject and evenly disperse an ascending flow of tiny bubbles of the process gas (inert gas, with a possible addition of chlorine to reduce alkali).

8 in stock (can be backordered)

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Additional information

Weight 23 kg

Sialon data sheet

Material data sheet Sialon (Si3Al3O3N5)
Typical Sialon grades NVD-001 NVD-002 NVD-003 NVD-004
Bulk Density g/cm3 3.2 3.1 3.3 3.2
Water Absorption 0 0 0 0
Flexural Strength MPa 580 900 1,020 790
Vickers Hardness HV1 GPa 13.9 12.7 15.0 13.8
Fracture Toughness (SEPB) MPam1/2 4 ~ 5 6 ~ 7 7 6 ~ 7
Young’s Modulus of Elasticity GPa 290 270 300 290
Poisson’s Ratio 0.28 0.28 0.28 0.28
Coefficient of Linear Thermal (40 – 800 °C)

Expansion

×10-6/℃ 3.2 3.4 3.3 3.5
Thermal Conductivity (20℃) W/(m・k) 25 23 27 54
Specific Heat J/(g・k) 0.64 0.66 0.65 0.66
Heat Shock Resistance 550 800 800 900
Volume Resistivity (20℃) Ω・cm >1014 >1014 >1014 >1014

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