Silicon Carbide Application In Cast Iron

Silicon-based products also occupy a certain amount in the steelmaking and foundry industries, especially silicon carbide is widely used in actual production. Because the use cost of silicon carbide is low, the addition of silicon carbide particles can prevent the precipitation of carbides, increase the amount of ferrite, reduce the white mouth, make the cast iron structure dense, significantly improve the processing performance and smooth the cutting surface.

After a large number of experiments, it is concluded that silicon carbide has become an important material in the production of gray cast iron. In general, when silicon carbide is used as an inoculant, silicon carbide is added to the sintered ladle along with molten iron in a granular form. Can effectively play the role of inoculation and treatment of thin-walled cast iron.

The use of silicon carbide in cast iron has a small amount of addition, which has little effect on the chemical composition of cast iron, but has a great impact on its microstructure. Therefore, it can improve the mechanical properties of gray cast iron and also have a significant impact on its physical properties.
 

Application effect of silicon carbide

1. Silicon carbide application can eliminate or reduce the tendency of white mouth;

2, silicon carbide application to avoid the emergence of supercooled tissue;

3. The application of silicon carbide reduces the wall thickness sensitivity of cast iron parts, making the microstructure difference of thin and thick sections small and the hardness difference small;

4.The application of silicon carbide is conducive to the nucleation of eutectic groups, which increases the number of eutectic groups;

5. The application of silicon carbide makes the shape of graphite in cast iron mainly small and uniformly distributed A-type graphite, thereby improving the mechanical properties of cast iron.

6. Silicon carbide can reduce production cost and improve production efficiency.