Silicon iron powder is widely used as an alloy element in low alloy structural steel, bearing steel, etc. At the same time, silicon iron powder is also used as a reducing agent. When the content of silicon element reaches more than 95%, it can also be used to manufacture monocrystalline silicon or configure non-ferrous metal alloys;
The silicon iron powder used for rolling is heavier, and after adding it, it can quickly enter the molten steel for precipitation and deoxygenation, increasing silicon content in the steel. The use of high silicon iron powder for rolling is lighter, which is very conducive to diffusion and deoxidation. Moreover, the higher the silicon content, the stronger its deoxygenation effect. Therefore, ferrosilicon powder is generally made by rolling high silicon iron;
When ferrosilicon powder is first added, it has little effect on the heating time of the molding sand, but it has a significant impact on the heating temperature and the strength of the plastic sand after hardening. As the amount of ferrosilicon powder increases, the heating temperature and strength increase. The higher the silicon content in ferrosilicon, the finer the particle size, and the less surface oxidation, the stronger its effect.
