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Ferro vanadium is an iron alloy that is obtained by reducing pentoxide vanadium with carbon in an electric furnace or by reducing pentoxide vanadium with silicon using the electric furnace silicothermic method.
The atomic weight of vanadium is 50.9414, and its outer electron configuration is 3d4s. Its melting point is 1902℃ and its boiling point is 3410℃. The density is 6.1 g/cm (at 20 ℃). Vanadium is a malleable metal that forms a continuous solid solution with iron. It also forms intermetallic compound α (FeV) at temperatures below 1210℃ and in the range of V35% to 55%.
Ferro vanadium is used to produce alloy steel. About 90% of the vanadium consumed in the world is used in the steel industry. In ordinary low-alloy steel, vanadium mainly refines the grain size, increases the strength of the steel, and suppresses its aging effect. In alloy structural steel, it refines the grain size, increases the strength and toughness of the steel. In spring steel, it is combined with chromium or manganese to increase the elastic limit of the steel and improve its quality. In tool steel, it mainly refines the structure and grain size of the steel, increases the tempering stability, enhances its secondary hardening effect, improves its wear resistance, and prolongs the service life of the tool. In heat-resistant steel and anti-hydrogen steel, vanadium also plays a beneficial role. In cast iron, the addition of vanadium promotes the formation of carbides, the formation of pearlite, stabilizes the carburized tissue, and makes the shape of graphite particles finer and more uniform, thereby refining the grain size of the matrix and improving the hardness, tensile strength, and wear resistance of the cast iron.
Ferro vanadium is an iron alloy obtained by reducing pentoxide vanadium with carbon in an electric furnace or by reducing pentoxide vanadium with silicon using the electric furnace silicothermic method. It is widely used as an element additive in smelting vanadium-containing alloy steel and alloy cast iron, and is also used to make permanent magnets.
Mainly used for smelting alloy steel. About 90% of the vanadium consumed in the world is used in the steel industry. In ordinary low-alloy steel, vanadium mainly refines the grain size, increases the strength, and suppresses the aging effect of the steel. In alloy structural steel, vanadium refines the grain size, increases the strength and toughness of the steel. In spring steel, it is combined with chromium or manganese to increase the elastic limit and improve the quality of the steel. In tool steel, it mainly refines the structure and grain size of the steel, increases the tempering stability, enhances its secondary hardening effect, improves its wear resistance, and prolongs the service life of the tool. In heat-resistant steel and hydrogen-resistant steel, vanadium also plays a beneficial role. In cast iron, the addition of vanadium promotes the formation of carbides, the formation of pearlite, stabilizes the carburized tissue, and makes the shape of graphite particles finer and more uniform, thereby refining the grain size of the matrix and improving the hardness, tensile strength, and wear resistance of the cast iron.
