Ferrosilicon, an alloy of silicon and iron, is available in 45%, 65%, 75% and 90% silicon grades. Its use is very wide, then the ferrosilicon manufacturer Anhui Fitech Materials Co.,Ltd will analyze its specific uses from the following three points.
Firstly, it is used as deoxidizer and alloying agent in steelmaking industry. In order to obtain steel with qualified chemical composition and ensure the quality of steel, deoxidation must be carried out at the end of steelmaking. The chemical affinity between silicon and oxygen is very large. Therefore, ferrosilicon is a strong deoxidizer for steelmaking, which is used for precipitation and diffusion deoxidation. Adding a certain amount of silicon to the steel can significantly improve the strength, hardness and elasticity of the steel.
Therefore, ferrosilicon is also used as an alloying agent when smelting structural steel (containing silicon 0.40-1.75%), tool steel (containing silicon 0.30-1.8%), spring steel (containing silicon 0.40-2.8%) and silicon steel for transformer (containing silicon 2.81-4.8%).
In addition, in the steel-making industry, ferrosilicon powder can release a large amount of heat under high temperature. It is often used as the heating agent of ingot cap to improve the quality and recovery of ingot.
Secondly, it is used as inoculant and spheroidizing agent in cast iron industry. Cast iron is an important metal material in modern industry. It is cheaper than steel and easy to melt and smelt. It has excellent casting properties and much better shock ability than steel. Especially nodular cast iron, its mechanical properties reach or approach the mechanical properties of steel. Adding a certain amount of ferrosilicon to cast iron can prevent the formation of carbide in iron and promote the precipitation and spheroidization of graphite. Therefore, ferrosilicon is an important inoculant (to help precipitate graphite) and spheroidizing agent in the production of nodular cast iron.
In addition, it is used as reducing agent in ferroalloy production. Not only the chemical affinity between silicon and oxygen is great, but also the carbon content of high silicon ferrosilicon is very low. Therefore, high silicon ferrosilicon (or siliceous alloy) is a common reducing agent in the production of low-carbon ferroalloy in ferroalloy industry.
Post time: May-07-2022