Products

Principle

Silicon carbide electric heating element has large specific resistance. When heated in air and the temperature of heating part reaches 1100 ℃, the resistivity is 0.0735 ~ 0.0168 Ω· cm2 / cm. The resistance value of silicon carbide electric heating element changes with the increase of temperature. It is a negative value from room temperature to 800 ℃ and a positive characteristic curve above 800 ℃. It has good chemical stability and acid has no effect on it, but alkali and alkaline earth metal oxides can erode it under certain temperature conditions. At high temperature, water vapor, hydrogen, halogen and sulfur can also oxidize and erode it.?

Silicon carbide rod is a non-metallic electric heating element. It is made of high-purity green hexagonal silicon carbide as the main raw material and recrystallized at 2200 ℃. The normal service temperature can reach 1450 ℃. Under reasonable service conditions, it can be used continuously for more than 2000 hours. It can be used in the air without any protective atmosphere. It is suitable for all kinds of electric furnaces and kilns.

Usage: due to the high service temperature of silicon carbide rod, it has good chemical stability. If it is matched with the automatic power supply system, the accurate constant temperature can be obtained, and the temperature can be automatically adjusted according to the curve according to the actual needs of the production process. It has been widely used in the fields of national defense, machinery, metallurgy, light chemistry, ceramics, semiconductors, analytical chemistry, scientific research and so on. Tunnel kiln, roller kiln, glass kiln, vacuum furnace, muffle furnace, smelting furnace and all kinds of heating equipment use silicon carbide rod for heating, which is convenient, safe and reliable.

For example, the smelting of copper, aluminum and various alloys, the heat treatment of mechanical devices, the sintering of ceramics and magnetic materials, and the heating element as various test and laboratory equipment can achieve ideal results.

Produce? Product specification: straight bar type, U-type, W-type, thread type, five section type (double heating part), Ф 8- Ф 54 various specifications.