The production of ferrovanadium alloys used as hardening additives for steel usually involves the following steps:
Selection of raw materials: First, vanadium and iron with high purity are selected as raw materials. The quality of ferrovanadium alloys depends largely on the quality of the raw materials.
Ratio Calculation: The ratio of vanadium and iron is calculated exactly according to the required composition of the ferrovanadium alloy. Common ferrovanadium alloys such as FeV50 and FeV80, the numbers denote the percentage of vanadium content.
Melting The calculated proportions of vanadium and iron are melted in an electric arc furnace. During the melting process, temperature and time must be strictly controlled to ensure uniformity of the alloy composition and to achieve the desired physical and chemical properties.
Addition of nitrogen: According to the reported information, vanadium-nitrogen additives can significantly improve the hardening effect of vanadium and reduce the amount of vanadium used by using inexpensive nitrogen to control the V/N ratio in molten steel between 3.0-5.0 [1]. The introduction of vanadium nitride into iron-vanadium alloys can further improve the strength, toughness and ductility of steel [2].
Purification and casting: The molten alloy is purified from impurities. The purified alloy is poured into a mould and allowed to cool to form an iron vanadium alloy block.
Post-processing: If required, the iron vanadium alloy block can be subjected to post-processing such as crushing and sieving to meet the customer's particle size requirements.
Quality Control: Finally, the finished iron vanadium alloy is tested for composition and properties to ensure that it meets the standards for use as a hardening additive.
How To Make Ferro Vanadium
Nov 12, 2024
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