Al-Fe alloy with low H, N and O element contents and preparation method thereof

Abstract

The invention relates to Al-Fe alloy with low H, N and O element contents, which comprises 36 to 65 weight percent of Al and 33 to 62 weight percent of Fe, wherein the weight percent of H in the Al-Fe alloy is lower than or equal to 2PPm, the weight percent of N is lower than or equal to 80PPm, and the weight percent of O is lower than or equal to 20PPm. The invention provides the Al-Fe alloy with low H, N and O element contents and a preparation method thereof. A process with the specific limited conditions is added on the basis of the existing Al-Fe alloy metallurgy process for removing theH, N and O elements in Al-Fe alloy liquid, in addition, the Al-Fe alloy with the ultra-low H, N and O element contents is obtained through precisely controlling relevant parameters in the process, the mechanical property of steel materials is greatly improved, and in addition, the whole process is simple and is easy to implement, so the Al-Fe alloy has very high market prospects.

Description

technical field [0001] The invention relates to the field of metallurgy, in particular to an aluminum-iron alloy with low content of H, N and O elements and a preparation method thereof. Background technique [0002] With the development of steelmaking technology and the continuous improvement of product quality requirements, steel mills can reduce the phosphorus and sulfur content of ordinary steel to a level (≤0.001%) lower than the general national standard (≤0.04%). The content of sulfur in steel continues to decrease, and the harm of hydrogen, nitrogen, and oxygen to steel is becoming more and more apparent. Therefore, some clean steels require a comprehensive reduction in the content of P, S, H, N, and O elements in steel, because hydrogen in steel If the content of nitrogen is too high, it is easy to crack, if the content of nitrogen is too high, it is easy to become brittle, and the content of oxygen is closely related to the content of inclusions in steel. Therefore...

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Problems solved by technology

[0003] At present, aluminum-iron alloy deoxidizers are used for the deoxidation of most steel types of aluminum-iron alloy liquid. Therefore, if the content of H, N, and O is not strictly controlled in the production process of aluminum-iron alloy, it will be brought into the deoxidation process of aluminum-iron alloy liquid during steelmaking. , causing adverse effects on the smelting of the aluminum-iron alloy liquid, eventually leading to excessive H, N, and O contents in the steel, greatly reducing the quality of the steel