GPS Silicon nitride ceramic Degassing rotor and shaft for melting aluminum

Product Detail

Silicon nitride shaft and rotor

 

Silicon nitride degassing rotor for purification of aluminum melting melts

 

Silicon nitride rotor includes impeller and shaft. Used in the aluminum and zinc casting industries, nitrogen, argon or carbon tetrachloride are injected and sprayed into molten metal through silicon nitride rotors for dehydrogenation. It can eliminate the bubbles inside the castings and improve their inner quality.  Injects inert gases into the Metallic solution

 

Silicon nitride rotor is an appropriate product which could be used in depuration to dispose hydrogen of Aluminium melt.

 

For the removal of hydrogen in molten aluminum, silicon nitride tubes are used to put into nitrogen or argon.Silicon nitride rotors are used in the whole process of molten aluminum to stir and disperse gas.Compared with graphite rotor,the service life of silicon nitride rotor is longer because no oxygen corrosion when heating up.With the characteristic of high density and high strength,silicon nitride rotor makes the running  stable when high speed rotating.With high thermal shock resistance performance,it can be inserted in and pulled out from molten aluminum repeatedly in batch operation.

 

Physical and chemical index

Types	Gas Si3N4
Density	>3.2g/cm3
Si3N4 content	>92%
Electrical resistivity	>1010
Compressive strength	>1500Mpa
Thermal conductivity(W/mk)	16-22
Porosity	0
Thermal expansion coeff.(RT-1000?)	3.2
Max temperature In air	1400?
Hardness(HRA)	>92