Product Details

SPK SiC Heating element (Non-standard customization)

Silicon carbide electric heating element is a rod-shaped non-metallic high-temperature electric heating element made of high-quality green silicon carbide as the main raw material after processing, high-temperature silicification and recrystallization. Compared with metal electric heating elements, SiC elements have the characteristics of high service temperature, oxidation resistance, corrosion resistance, long service life, small deformation, and convenient installation and maintenance. Therefore, silicon carbide rods are widely used in various high-temperature electric furnaces and other electric heating equipment in magnetic materials, powder metallurgy, ceramics, glass, metallurgy, machinery and other industries.

Technical Index of Silicon Carbide SiC Heating Elements

specific gravity	2.6~2.8g/cm³	bend strength	>300kg
hardness	>9 MOH′S	Tensile strength	>150kg/cm³
porosity rate	<30%	Radiancy	0.85

The influence to the surface of Silicon Carbide SiC Heating Elements in different Operating Temperature and Surface Load

atmosphere	Furnace Temperature(°C)	Surface Load(W/cm2)	The influence on the Rod
Ammonia	1290	3.8	The action on SiC produces methane and destroys the protection film of SiO2
Carbon dioxide	1450	3.1	Corrode SiC
Carbon monoxide	1370	3.8	Absorb carbon powder and influence the protection film of SiO2
Halogen	704	3.8	Corrode SiC and destroy the protection film of SiO2
Hydrogen	1290	3.1	The action on SiC produces methane and destroys the protection film of SiO2
Nitrogen	1370	3.1	The action on SiC produces insulating layer of silicon nitride
Sodium	1310	3.8	Corrode SiC
silicon dioxide	1310	3.8	Corrode SiC
Oxygen	1310	3.8	SiC oxidized
Water-vapor	1090-1370	3.1-3.6	The action on SiC produces hydrate of silicon
Hydrocarbon	1370	3.1	Absorb carbon powder resulted in Hot pollution