The use cost of silicon carbide is low, adding silicon carbide particles can prevent carbide precipitation, increase the amount of ferrite, reduce white spots, make the structure of cast iron compact, significantly improve processing performance, and make the cutting surface smooth; especially in smelting, adding graphite core , increasing the number of graphite balls in ductile iron, improving the shape of graphite in gray cast iron, etc. are very beneficial.
1. The application of silicon carbide can eliminate or reduce the whitening tendency;
2. Application of silicon carbide to avoid supercooling structure;
3. Apply silicon carbide to reduce the sensitivity of cast iron wall thickness, so that the difference in microstructure and hardness at the thin and thick sections of the casting is small;
4. The application of silicon carbide is conducive to the nucleation of eutectic groups and increases the number of eutectic groups;
5. The application of silicon carbide makes the graphite in cast iron mainly in the form of fine and evenly distributed a-type graphite, thereby improving the mechanical properties of cast iron;
6. Silicon carbide can reduce production costs and improve production efficiency.
