In order to remove hydrogen in the aluminum liquid, the Silicon Nitride Ceramic hollow degassing rotor is used to feed nitrogen or argon, and the gas is dispersed by high-speed rotation,finally achieve the effect of neutralizing and discharging hydrogen.
ï?¬Compared with graphite rotor, Silicon Nitride Ceramic will not be oxidized under high temperature environment, so it will not pollute the aluminum liquid, and the service life is much longer;
ï?¬The property of high thermal shock resistance ensures that the degassing rotor will not break during frequent intermittent operation;
Because Silicon Nitride Ceramic is of high density and high strength, it assures that degassing rotor can be reliable and stable in high speed rotation.
Silicon Nitride Heater Protection Tube
SG-28 Silicon Nitride Ceramic has become the preferred material for protection tube of electric heater in aluminum processing industry due to its excellent high temperature performance and corrosion resistance.
ï?¬Due to its high temperature strength and strong thermal shock resistance, Silicon Nitride Ceramic can withstand the heat load of a high temperature burner, and the corrosion of molten aluminum for a long time, and the service life is more than one year;
ï?¬Silicon Nitride Ceramics almost do not react with the aluminum liquid, so it will not pollute the aluminum liquid, which is conductive to improve the purity of aluminum liquid under high temperature.
Compared with the traditional upper radiation heating method,the efficiency of immersive heating is 30%-50% higher and the overheated oxidation of the upper molten aluminum can be reduced by 90%.
The long-term practical use proves that SG-28 Silicon Nitride Ceramic is very suitable for low-pressure casting machines and dosing furnaces.
Compared with traditional cast iron, silicon carbide, carbon nitrogen materials and Aluminum Titanate, Silicon Nitride Ceramics have the best high-temperature strength and the service life can last for more than one year.
The low wettability to aluminum liquid, makes the SG-28 Silicon Nitride Ceramic effectively reduce the slagging on the inner and outer walls of the riser tube, reduce the shutdown loss and maintenance.
SG-28 Silicon Nitride Ceramic has excellent corrosion resistance, which can effectively reduce the pollution to the aluminum liquid, and improves casting quality.
