Preparation method of iron-based amorphous nanocrystalline alloy

Abstract

The invention discloses a preparation method of an iron-based amorphous nanocrystalline alloy, which comprises the following steps: after intermediate frequency smelting and external refining, directly using a refining bag to prepare a belt to obtain the iron-based nanocrystalline alloy; the preparation method sequentially comprises the following steps of material preparation, medium-frequency smelting, transferring of molten steel into a refining ladle, external refining slagging, bottom argon blowing refining, calming and deslagging and external refining ladle strip spraying. According to the method, intermediate-frequency smelting molten steel is guided into the refining ladle in air, and removal of molten steel aluminum is facilitated; aluminum oxide and other inclusions after dealumination are removed through external refining, the smelting process is shortened, the production efficiency is improved, the alloy reheating cost is reduced, meanwhile, the ladle spraying process and the possibility of secondary pollution caused by ladle spraying are omitted, the process is simplified, the refractory material cost is reduced, the preparation time is shortened, and the product quality and the yield are greatly improved; and according to the rhythm, the next ladle is prepared while the nozzle is adjusted after sedation, continuous and rapid production of the iron-based nanocrystalline alloy can be achieved, the purity of the iron-based nanocrystalline alloy is high, and the production cost is low.

Description

technical field [0001] The invention belongs to the technical field of metallurgy, and in particular relates to a rapid preparation method of an iron-based amorphous nanocrystalline alloy. Background technique [0002] The preparation process of amorphous and nanocrystalline alloys is generally prepared by melting in an intermediate frequency furnace to prepare a master alloy (alloy ingot), and then pouring the master alloy into a tundish again after secondary melting for strip making. [0003] Patent CN 201410812602.7 discloses a method for preparing an iron-based amorphous nanocrystalline soft magnetic alloy for industrial production, specifically disclosing that master alloy raw materials are repeatedly smelted and poured into alloy ingots, and the alloy ingots are broken and remelted. However, this process of casting and re-melting the alloy ingot has the problem of increased time, energy and material costs. [0004] Patent CN 201310732155.X discloses a slagging agent f...

AI Technical Summary

Problems solved by technology

This method is mainly aimed at the smelting of master alloys. Vacuum smelting does not consider the removal of aluminum content in molten steel. Although the vacuum smelting gas content is less, endogenous inclusions will be reduced, but subsequent oxidation in the strip-making process is inevitable, so there is no Fundamentally solve the problem that subsequent precipitation and inclusions affect the stable preparation of the strip and its own quality

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