What are the main uses of ferrophosphorus?
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What are the main uses of ferrophosphorus?
Ferrophosphorus is an iron alloy composed of phosphorus and iron. In addition, it also contains impurities such as silicon, manganese, carbon and sulfur. Ferrophosphorus is used as a phosphorus additive in steel, an alloy additive and a deoxidizer in metallurgy. Ferrophosphorus is used as an alloying agent in the steelmaking industry, and can also produce phosphates, and can also be used as a filler in the production of metal coatings. Phosphorus is a very controversial element. In general steel products, phosphorus is a harmful component. If the phosphorus content in steel is high, it will cause cold brittleness of steel and reduce the plasticity and impact toughness of steel. But in some special products, the addition of phosphorus can improve the strength, corrosion resistance and machinability of steel, but it also increases the brittleness of steel.
Ferrophosphorus is widely used in rolling mills, automobile cylinder liners, engine rolling mills and large castings to improve the corrosion resistance and wear resistance of mechanical parts. Adding phosphorus to cast iron castings can improve the fluidity of molten iron, thereby improving casting performance and surface quality; gray cast iron contains 0.5% phosphorus, which can improve its tensile strength. Wear-resistant cast iron contains about 0.15% phosphorus, which can significantly improve its wear resistance. Train brake shoes contain 0.7% to 1.0% phosphorus, and form a uniform binary phosphorus eutectic structure in the casting, which is distributed in a mesh shape. Phosphorus eutectic has high hardness, which not only improves its wear resistance, but also improves thermal conductivity and heat resistance. Make the wear surface uniform and it is not easy to generate sparks during friction.
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