SiC Heating Elements
(Silicon Carbide Heating Elements)
Silicon carbide is a ceramic material with relatively high electrical conductivity when compared to other ceramics. Elements are produced by pressing or extruding and then sintering. The silicon carbide heating element (SiC heating element) is a kind of non-metal rod or tube shape high temperature electric heating element. It is made of selected super purity green hexagonal silicon carbide as main material, which is made into blank and silicon crystal under high temperature of 2400ºC. In oxidizing atmosphere, its service temperature can reach 1450ºC and continuous use life can reach 2000 hours.
Typical heating elements are rods or tubes, with diameters between 0.5 and 3 inches and lengths from 1 to 10 feet. They have metalized ends for electrical connections, and they often have both connections at one end, with two helical slots which stop short of the other end, thus approximating a twisted hairpin form.
Silicon carbide heating elements are refractory, non-metallic electrical resistant products in solid rods or tubular form, when the element is electrically connected, a current passes through the element. Because the hot zone has a higher electrical resistant than the cold ends, the hot zone will generate heat. To heat your furnace with SiC heating elements is in many ways so obvious that the advantages are often overlooked. For example, with electrical heating you will save money, the refractories last longer, there are no flue gasses, your working environment is more pleasant, higher power can be radiated, there are favourably safety aspects, the temperature is more accurate and can be better controlled, etc.
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