Silicon carbide smelting process is divided into several layers

In fact, about the smelting process of silicon carbide, many friends do not know much, silicon carbide smelting furnace smelting products have 9 layers, respectively:

1. The old furnace core body: it is a resistance heating body loaded in the furnace, and the temperature can reach about 2600℃ after more than 10 hours of power transmission, and the graphite and crystallization will be decomposed during the smelting process to participate in conduction.

2. Decomposed graphite: This is mainly the decomposition products of silicon carbide, but the quality is far less good than silicon carbide, and it can also be commonly known as core material.

3. Primary silicon carbide raw block: belongs to the best silicon carbide, generated at a temperature of 2000-- 2400℃.

4. Secondary silicon carbide raw block: It is second only to primary silicon carbide, the content is above 90, and the generation temperature is 1900-2000℃.

5. Amorphous items: the color is yellow-green or gray-green, which can also be recycled or become carbon materials.

6. Adhesive: the color is gray to yellow-white, which is the concentration area of impurities when silicon carbide is smelted.

7. Silicon carbide: It is second only to the outermost layer, showing light green.

8. Unreacted material

9. Where "white hair" is most likely to occur