Ferro vanadium
FeV
| Ferro Vandadium FeV composition (%) | |||||
| Grade | V | AI | P | Si | C |
| FeV40-A | 38-45 | 1.5 | 0.09 | 2.00 | 0.60 |
| FeV40-B | 38-45 | 2.0 | 0.15 | 3.00 | 0.80 |
| FeV50-A | 48-55 | 1.5 | 0.07 | 2.00 | 0.40 |
| FeV50-B | 48-55 | 2.0 | 0.10 | 2.50 | 0.60 |
| FeV60-A | 58-65 | 1.5 | 0.06 | 2.00 | 0.40 |
| FeV60-B | 58-65 | 2.0 | 0.10 | 2.50 | 0.60 |
| FeV80-A | 78-82 | 1.5 | 0.05 | 1.50 | 0.15 |
| FeV80-B | 78-82 | 2.0 | 0.06 | 1.50 | 0.20 |
FeV80
Ferrovanadium content is 35-80% and is produced in electric arc furnaces. Scrap iron is first melted, then a mixture of V2O5, aluminum and a flux such as calcium fluoride or calcium oxide is added.
In a subsequent reaction, metallic aluminum is converted to aluminum oxide, forming slag, while V2O5 is reduced to metallic vanadium, which dissolves in the molten iron. Since this redox reaction is exothermic, heat is required only to produce an ignition temperature of 950° C (1,750° F). After ignition, the electrodes are withdrawn until the reaction is complete; they are then reinserted into the slag and the furnace is reheated to improve settling.
Mainly used for smelting alloy steel. About 90% of the vanadium consumed globally is used in the steel industry.
In ordinary low-alloy steel, vanadium mainly has the effects of refining grains, increasing the strength of the steel and inhibiting its aging;
In alloy structural steel, refine the grains and improve the strength and toughness of the steel;
In spring steel it is combined with chromium or manganese.
Used together, it can increase the elastic limit of steel and improve its quality;
In tool steel, the main purpose is to refine the structure and grains of the steel, increase the tempering stability of the steel, enhance the secondary hardening effect, improve the wear resistance, and extend the service life of the tool;
In heat-resistant and hydrogen-resistant steels, vanadium also plays a beneficial role;
The vanadium added in cast iron promotes the formation of pearlite due to the formation of carbides, stabilizes the cementite, makes the graphite particles fine, thin and uniform in shape, refines the matrix grains, thereby improving the hardness, tensile strength and wear resistance of the casting.
The thermite method can also be performed in a refractory-lined steel pot or a water-cooled copper crucible. Ignite V2O5, iron oxide and aluminum with a barium peroxide fuse or magnesium tape.
Ferro vanadium Master Alloy Manufacturers
NITRIDED FERRO VANADIUM Manufacturers
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