Uses Of Silicon Nitride in Iron And Steel Industry

1. Improve the hardness and elastic modulus of steel.
Because ferrosilicon nitride has high hardness and elastic modulus, adding a certain amount of ferrosilicon nitride can significantly improve the hardness and elastic modulus of steel, thus improving the mechanical properties of steel.
2. Improve the wear resistance of steel.
Ferrosilicon nitride has good wear resistance, which can make steel have better wear resistance and prolong its service life.
3. Improve the oxidation resistance of steel.
Ferrosilicon nitride has good oxidation resistance, which can effectively prevent steel from oxidation at high temperature and reduce the formation of surface oxide layer.

Ferrosilicon nitride is usually added in the middle and late stage of steelmaking, and its addition amount is generally 0.05% to 0.15% of the total amount of molten steel. The specific addition amount needs to be adjusted according to the specific requirements of steel, furnace type and furnace condition.
At present, the application of ferrosilicon nitride in steel-making industry at home and abroad has been very popular, mainly used in the production of high-strength structural steel, profile steel, cold-rolled plate and automobile steel. In the production of some high-end steel products, the amount of iron silicon nitride will be further increased to achieve better performance requirements.

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