Steel-making Industry
Deoxidation Effect
During the steel-making process, there is a certain amount of oxygen in molten steel, which can affect the quality of steel products, resulting in defects such as pores and inclusions in steel. The silicon element in atomised ferrosilicon has a strong deoxidizing ability. When atomised ferrosilicon is added to molten steel, silicon will react with the oxygen in the molten steel to form stable compounds such as silicon dioxide (SiO₂), effectively reducing the oxygen content in the molten steel. For example, when producing high-strength alloy steel, adding atomised ferrosilicon can reduce the oxygen content in molten steel to a very low level, significantly improving the purity of the steel.
Alloying Function
Silicon is an important alloying element in steel, which can improve the mechanical properties of steel, such as strength, hardness, toughness and wear resistance. Atomised ferrosilicon, as a carrier of silicon, can accurately add silicon elements to steel during steel-making. For instance, when manufacturing high-strength alloy steel for automobiles, adding an appropriate amount of atomised ferrosilicon can increase the yield strength of the steel by 20 - 30% and also improve the processing performance of the steel, making it easier to perform forging, rolling and other processing operations.
Improvement of Steel Casting Performance
Atomised ferrosilicon can refine the grains of steel, making the microstructure of steel more uniform and dense. This helps to improve the fluidity of steel during the casting process and reduce casting defects such as shrinkage cavities and hot cracks. When casting large steel castings (such as the bases of large machinery, ship propellers, etc.), adding atomised ferrosilicon can improve the quality and yield of steel castings.
Foundry Industry
Improvement of Cast Iron Performance
In the production of cast iron, atomised ferrosilicon plays a crucial role. It can increase the silicon content of cast iron, thereby improving the strength, hardness and wear resistance of cast iron. For example, when manufacturing wear-resistant cast iron parts such as machine tool beds, adding atomised ferrosilicon can increase the hardness of cast iron by about 15 - 20%, effectively prolonging the service life of cast iron parts.
Improvement of Foundry Process Performance
Its spherical particle morphology gives it good fluidity and dispersibility in cast iron melt. This helps to evenly fill the casting mould, ensuring the dimensional accuracy and surface quality of castings. Meanwhile, atomised ferrosilicon can also reduce the surface tension of cast iron melt and the amount of gas dissolved in the melt, thereby reducing the porosity of castings and improving the compactness of castings.
Ferroalloy Additive
Adjustment of Alloy Composition and Properties
During the production of other ferroalloys (such as ferromanganese, ferrochrome, etc.), atomised ferrosilicon can be used as an additive. It can adjust the composition of alloys. For example, in some special-purpose ferromanganese alloys, adding an appropriate amount of atomised ferrosilicon can change the silicon-manganese ratio of the alloy, thereby optimizing the performance of the alloy and making it more suitable for specific industrial fields, such as deoxidation and alloying in stainless steel production.
Improvement of Alloy Melting Performance
During the alloy melting process, atomised ferrosilicon helps to improve the uniformity of the distribution of alloy elements. Its addition can reduce the viscosity of alloy melt, promote the mutual diffusion and integration of various alloy elements, making the composition of the alloy more uniform and improving the quality and performance stability of the alloy.
Non-ferrous Metal Metallurgy
Use as an Intermediate Alloy Additive in Aluminum Alloy Production
In the production of aluminum alloys, atomised ferrosilicon can be used as an intermediate alloy additive to improve the performance of aluminum alloys. Silicon can improve the heat resistance of aluminum alloys. When aluminum alloys are used for parts in high-temperature environments (such as some parts of automobile engines, heat dissipation components of aerospace equipment, etc.), adding atomised ferrosilicon can increase the heat-resistant temperature of aluminum alloys by about 50 - 100 °C and also enhance the strength of aluminum alloys, ensuring that the parts can still maintain good mechanical properties at high temperatures.
Application in Other Non-ferrous Metals such as Magnesium Alloys
In magnesium alloys, atomised ferrosilicon also has a similar effect. It can refine the grains of magnesium alloys, improve the strength and corrosion resistance of magnesium alloys. For example, in some magnesium alloy products with high requirements for corrosion resistance (such as the casings of electronic products), adding atomised ferrosilicon can significantly reduce the corrosion rate of magnesium alloys and prolong the service life of products.
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