M Type SiC Heating element

M Type SiC Heating element

Advantages of silicon carbide rods: 1) The surface temperature can reach 1500 degrees.
2). Infrared radiation is 5-10 times that of ordinary nickel chromium wire.
3). High mechanical strength, with a bending strength of up to 100-120MPa.
4). Strong oxidation resistance, strong corrosion resistance, and excellent heat shock resistance.
5). Long service life, easy installation and maintenance.
Model of silicon carbide rod: Model: GD type (equal diameter) When ordering, please provide the following data: OD: diameter; HZ: Hot end length; CZ: Cold end length; OL: Overall length.
If you have special requirements for resistance, please let us know the resistance value.
The use of silicon carbide rods: (1) After being heated in air, a dense silicon oxide film is formed on the surface of the silicon carbide rod, which becomes an antioxidant protective film and prolongs its lifespan.
In recent years, various coatings have been developed to prevent cracking of silicon carbide rods for use in furnaces with various gases.
(2) The larger the current applied to the silicon carbide rod, the higher the surface temperature of the silicon carbide rod.
Suggest using the lowest possible surface load density (power).
Please note that the values recorded on the cold end of the silicon carbide rod are the current and voltage at 1000 ℃ in the air, which may not necessarily match the actual use.
In general, the surface power of silicon carbide rods is determined by the relationship between the temperature inside the furnace and the surface temperature of the silicon carbide rod. It is recommended to use the current and voltage at the maximum density of the silicon carbide rod, which may not necessarily match the actual use.
In general, the surface power of silicon carbide rods is determined by the relationship between the temperature inside the furnace and the surface temperature of the silicon carbide rods. It is recommended to use a surface power (W/cm2) of 1/2-1/3 of the maximum density of the silicon carbide rods. (3) When continuously using silicon carbide rods, it is desirable to slowly increase the resistance to maintain a long lifespan.
(4) Silicon carbon rods should be connected in parallel as much as possible.
If the resistance values of silicon carbide rods are different, the high resistance silicon carbide rods in series will concentrate the load, causing a rapid increase in the resistance of one silicon carbide rod and a shorter lifespan (5). The temperature distribution characteristics of silicon carbide rods require inspection within the effective heating length of Δ 60 ℃ to be considered qualified for new shipments. Of course, the temperature distribution will increase with aging and may eventually reach 200 ℃.
The specific temperature distribution changes also vary depending on the furnace atmosphere and usage conditions.