Introduction of physical properties of ferrosilicon alloys
Ferro-silicon is an ferroalloy of iron and silicon. Ferrosilicon is made of coke, steel chips, quartz (or silica) as raw materials and smelted by electric furnace. Huatuo Metallurgy is a professional manufacturer of spheroidizing agent and ferrosilicon wholesale. The following is a brief introduction of the physical characteristics of ferrosilicon alloy.
Pure silicon is a steel-gray, metallic, crystalline substance, hard and brittle, nonmetallic. Silicon has an atomic weight of 28.08. , density 2300kg/m3, melting point 1535K.
Silicon and iron can be mutually soluble in any proportion, and can produce fesi2, FesI Fe5si3 Fe2SI and other silicides. Fesi is newly found in liquid alloy, and the rest of the silicides can be decomposed in solid state when heated.
Ferro-silicon is an alloy of iron and silicon. The melting point of ferrosilicon increases with the increase of silicon content, and the melting point of standard ferrosilicon is lower than 1643K.
The silicon and iron alloys are prone to segregation, and the difference between the silicon content in the upper part and the silicon content in the lower part is more than 20%. The larger the thickness of the alloy ingots and the longer the cooling time, the more serious the segregation.
Ferrosilicon products can be silted, which is caused by the storage of impurities such as phosphorus, aluminum and calcium in the humid atmosphere, causing silting and giving off toxic gases.
Deoxidizer and alloy conditioning agent for steelmaking; Used in casting as an inoculant.
