10 pcs of ED SiC Heating Elements 20/24/75

Description

About Sic Heating Elements

The SiC electric heating element is mainly made of high quality green silicon carbide, it’s a kind of tubular and non-metallic high temperature Electric Heating Element produced by processing of making semi-finished product, high-temperature silicification, re-crystallization. Compared to metal electric heating elements, it has advantages of high working temperature, anti-oxidation, corrosion resistance, long service life, little deformation, easy installation and maintaining etc. So Sic electric heating element is widely used in high temperature furnaces and other electric heating equipment of magnetic materials, powder metallurgy, ceramics, glass, metallurgy,machinery and other industries.

Our Sic heating element adopt the most advanced production technology for the cold end , it has the advantages of quality of hot-cold end resistance ratio, energy saving, long service life, and avoiding the damage to the furnace body due to high temperature of cold end.

Oxidation of Resistance of Sic Heating Elements

SiC heating element begins to oxidize in the air when the temperature goes to 800 ℃, there will be a SiO2 protective film generated on the surface when it reaches to 100-1200 ℃, crystallizing cristobalite at 1200 ℃,the protection film reaches a certain thickness at 1400 ℃,and then the rate of oxidation element becomes extremely slow and steady. It will result in the damages to the protective film, increasing the rate of oxidation and premature failure of components if it continues to heat up to 1527 ℃ or above .
The Oxidation of Silicon Carbide Heating Elements is extremely slow during working , but it will still lead to increasing resistance for long time working, this is called aging of the element.