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Why Use MoSi2 Heating Elements in High Temperature Furnaces?

Molybdenum disilicide heating element is a heating element based on molybdenum disilicide (MoSi2), which has excellent characteristics such as high temperature resistance, corrosion resistance, good air tightness, thermal shock resistance, and long service life. It is usually used in the ceramics, glass, metallurgy, magnetic materials, refractory materials, and other industrial high temperature furnaces. 

Compared with traditional heating elements, the specific advantages of MoSi2 heating elements are as follows:

1) The operating temperature is high. In an air environment, the operating temperature of the 1700-type element is 1700°C, and the operating temperature of the 1800-type element is 1800°C, and it can be used for a long time.

2) The heating speed is fast, and it can be raised from room temperature to the working temperature within a few hours, mainly due to the good electrical and thermal conductivity of MoSi2.

3) It is not easily deformed or oxidized at high temperature, mainly due to the small thermal expansion coefficient of MoSi2, and the SiO2 passivation layer is easy to form on the surface at high temperature to prevent further oxidation.

4) Low power consumption. Compared with heating elements such as graphite electrodes, can save more than 10% of electricity, mainly due to the low resistivity of MoSi2, which is 2×10-5Ω·cm.

5) Long service life. In addition to being able to work stably in a high temperature environment, it will not dissolve in most acidic and alkaline solutions, but will dissolve in nitric acid and hydrofluoric acid.

6) Eco-friendly. The MoSi2 electric heating element will not produce any pollutants during operation, it can be said to be zero emission, which meets the requirements of green environmental protection.

7) The installation and maintenance are convenient and quick. If the MoSi2 heating element is damaged during use, it can be replaced under the condition of ensuring safety and the furnace does not stop, so that the production efficiency will not be affected.

8) It is suitable for working at high temperature for a long time, especially for large-scale high-temperature kilns such as tunnel kilns, which can better play its characteristics under continuous working conditions.

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