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Si3n4 Silicon Nitride Heater Tube For Aluminum Industry

Categories Silicon Nitride Ceramic
Brand Name: KEGU
Place of Origin: China
Price: 200-500 yuan/kg
Payment Terms: L/C,D/A,D/P,T/T,Western Union,MoneyGram
Supply Ability: 2,000 pcs/month
Packaging Details: Strong wooden box for Global shipping
Model Number: Customizable
Material: Silicon Nitride
Composition:SiC: >85%
Color: Black
Density: 3.20-3.26g/cm3
Max. Service Temp: 1450℃
Flexural Strength: 250MPa
Sample: Customizable
Chemical Stability: High
Apparent Porosity: 0-0.1%
Elastic Modulus: 300-320GPa
Compression Strength: >1500MPa
Vickers Hardness(HV0.5): 15-16GPa
Thermal Conductivity: 20-25W/(m.k)
Specific Resistivity: 10^14Ω·cm
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Si3n4 Silicon Nitride Heater Tube For Aluminum Industry

silicon nitride (si3n4) heater protection tube for aluminum industry


High-performance silicon nitride ceramic materials developed for the aluminum industry has significantly improved thermal and mechanical properties than similar products. On this basis, the "L-shaped high thermal conductivity submerged heating "Appliance" will bring revolutionary progress to aluminum industrial equipment.


Silicon nitride ceramic has become the material of choice for the outer protection tube of electric heaters and gas heaters due to its excellent high temperature performance.

Due to its good high-temperature strength and high thermal shock resistance, the product can withstand the thermal load of the high-temperature heating element or burner for a long time, and the service life is more than one year;


SILICON NITRIDE (SI3N4) HEATER PROTECTION TUBE FOR ALUMINUM INDUSTRY 0


Advantage:


  • Compared with the traditional upper radiant heating method, the energy saving efficiency reaches 20%-30%, and the overheating and oxidation of the upper aluminum liquid is effectively avoided.

  • Silicon nitride ceramics hardly react with the molten aluminum, so it will not pollute the molten aluminum, which is beneficial to maintain the purity of the heated molten aluminum;

SILICON NITRIDE (SI3N4) HEATER PROTECTION TUBE FOR ALUMINUM INDUSTRY 1SILICON NITRIDE (SI3N4) HEATER PROTECTION TUBE FOR ALUMINUM INDUSTRY 2


Silicon Nitride Related Data


Main component99%Al2O3S-SiCZrO2Si3N4
Physical
Property
Densityg/cm33.93.163.2
Water Absorption%00.100.1
Sinter Temperature°C1700220015001800
Mechanical
Property
Rockwell HardnessHV1700220013001400
Bend Strengthkgf/mm23500400090007000
Compression IntensityKgf/mm230000200002000023000
Thermal
Property
Maximum working
temperature
°C1500160013001400
thermal expansion
coefficient
0-1000°C
/°C8.0*10-64.1*10-6(0-500°C)9.5*10-62.0*10-6(0-500°C)
5.2*10-6(500-1000°C)4.0*10-6(500-1000°C)
Thermal Shock resistanceT(°C)200250300400-500
Thermal ConductivityW/m.k(25°C31100325
300°C)16100325
Electrical
Property
Resisting rate of Volume◎.cm    
20°C>1012106-108>1010>1011
100°C1012-1013>1011
300°C>1012>1011
Insulation Breakdown
Intensity
KV/mm18semiconductor917.7
Dielectric Constant (1 MHz)(E)10297
Dielectric Dissipation(tg o)0.4*10-3

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