Low-manganese low- sulfur raw material ferroferrite for amorphous usage and method of production

Abstract

The invention discloses a non-crystal low-manganese and low-sulfur pure ion and manufacturing method, which comprises the following parts: 0.03-0.07% C, 0.10-2.0% Si, 0.03-0.06% Mn, not more than 0.02% P, not more than 0.005% S, not more than 0.02% Al, not more than 0.008% Sn and not more than 0.01% Ti. The manufacturing procedure comprises the following steps: adopting melted iron to predispose; reducing S content in the melted iron; blowing in the rotary furnace; removing carbon and manganese through double-slag method or multiple slaggings; proceeding LF refining; casting in the square blank; using FeSi, Al or individual Al to predeoxidize; blowing and stirring in the whole procedure; dispersing through ferrosilicium and rankinite to deoxidize and desulfurize deeply; reducing Al; heating; feeding calcium line after stirring; casting; obtaining iron blank.

Description

technical field [0001] The invention belongs to the field of metal material preparation, and in particular relates to a composition design and production method of low-manganese and low-sulfur raw material pure iron, and is especially suitable for the production of amorphous alloys and related materials. Background technique [0002] Raw pure iron is the basic raw material for the development of new iron and steel materials. With the increase in the variety and output of new materials in recent years, the research and development and application of raw pure iron have also received increasing attention. According to the provisions of the national standard (GB9971-88), the main uses and chemical compositions of raw material pure iron are shown in Table 1. The composition of raw material pure iron varies greatly due to different application conditions. Therefore, major domestic production enterprises have established their own corresponding As reported in the paper "The Present...

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Problems solved by technology

[0006] In practical applications, due to the advancement of new material smelting technology, the carbon increase in the smelting process has been greatly reduced, so some materials do not require a very low C content for raw material pure iron. For example, raw material pure iron for amorphous requires 0.025≤C≤0.07 %, while the content of the second type of elements Mn and S is low (Mn≤0.04%, S≤0.05%), and the content of the third type of elements Sn, Ti, etc. (Ti≤0.01%, Sn≤0.008%) is ultra-low. The converter process can control carbon, but due to the high requirements for elements such as Mn, S, Sn, Ti, etc., the current smelting process cannot meet the needs of production