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Preparation method for manganese-iron alloy

A technology of ferromanganese alloy and weight percentage, applied in the field of preparation of ferromanganese alloy, can solve the problems of excessive phosphorus and carbon content, and achieve the effect of solving the problem of excessive phosphorus and carbon content

Inactive Publication Date: 2017-05-10
薛亚红
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a low-phosphorus, low-carbon ferromanganese alloy, which can effectively overcome the problem of excessive phosphorus and carbon content in the existing ferromanganese alloy

Method used

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Examples

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Embodiment Construction

[0011] The technical solutions of the present invention are described below through specific examples, and the following examples are only for illustrating the present invention rather than limiting the scope of the present invention.

[0012] A ferromanganese alloy, its composition includes by weight percentage, 50-70% of manganese, 3-5% of silicon, 0.1-0.3% of strontium, less than 1.0% of carbon, less than 0.1% of phosphorus, less than 0.02% sulfur, no more than 2% other impurities, and the balance is iron.

[0013] The preparation method of ferromanganese alloy is:

[0014] Select scrap steel with a carbon content of less than 1.0% calculated by weight percentage, and add a calcium-based dephosphorization agent accounting for 13-15% of the weight of the steel, wherein the silicon weight content in the calcium-based dephosphorization agent is 30-35%; After all the above raw materials are melted, add a slagging agent to make slagging, and then add a slagging agent to remove ...

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Abstract

The invention relates to a preparation method for a manganese-iron alloy. From composition, the manganese-iron alloy comprises the following components in percentage by weight: 50-70% of manganese, 3-5% of silicon, 0.1-0.3% of strontium, less than 1.0% of carbon, less than 0.1% of phosphorus, less than 0.02% of sulphur, not greater than 2% of other impurities and the balance iron. The phosphorus content and carbon content of the obtained manganese-iron alloy are lower than contents in the requirements of steel; and the problem of too high phosphorus content and carbon content in an existing manganese-iron alloy is solved.

Description

technical field [0001] The invention belongs to the field of metal materials, in particular to a method for preparing ferromanganese alloy used as a desulfurizer or a deoxidizer. Background technique [0002] With the development of the steel industry, many high-quality and high-quality alloy steels have been developed and used. However, the content of sulfur or oxygen in alloy steel has a great influence on the performance of alloy steel. Desulfurizers or deoxidizers are required when smelting alloy steel. At the same time, when special steel is required, the wear resistance and high strength of manganese alloy steel are widely used. Therefore, in the process of using ferromanganese alloy to prepare manganese alloy steel, it can be used as raw material and can also play the role of deoxidizer and desulfurizer, which is the first choice for refining manganese alloy steel. [0003] However, the content of phosphorus and carbon in the currently used ferromanganese alloy is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21C7/06C21C7/064C22C22/00
CPCC21C7/06C21C7/0645C22C22/00
Inventor 薛亚红
Owner 薛亚红