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High rare earth lanthanum calcium calcium iron alloy

A technology of silicon-calcium-iron alloy and silicon-calcium alloy, which is applied in the field of metallurgy, can solve the problems of no application, etc., and achieve the effect of low cost, high rare earth content, uniform and stable chemical composition

Inactive Publication Date: 2015-12-02
INNER MONGOLIA BAOTOU STEEL UNION
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The second is refined rare earth alloys, which have higher rare earth content and fewer impurities, such as neodymium-iron alloy (Nd-Fe), but this type of alloy is mainly used in magnetic materials and other fields, and has not yet been applied to the field of steelmaking
At present, during the production of "rare earth steel", the wire feeding machine is used to feed the mixed rare earth cored wire into the ladle, and the rare earth yield is only about 5%.

Method used

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  • High rare earth lanthanum calcium calcium iron alloy
  • High rare earth lanthanum calcium calcium iron alloy
  • High rare earth lanthanum calcium calcium iron alloy

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Embodiment Construction

[0017] The invention produces high rare earth lanthanum-silicon-calcium-iron alloy according to the steps of batching, smelting, pouring, crushing and packaging.

[0018] Raw materials for preparing high rare earth lanthanum silicon calcium iron alloy include: rare earth metal lanthanum, silicon calcium alloy and scrap steel. Wherein, the mass percentage content of La in the rare earth metal lanthanum is more than or equal to 99%. The mass percent content of Si in the silicon-calcium alloy is 50-65%, and the mass percent content of Ca is 24-31%. The lumpiness of steel scrap is 50-100mm. Scrap steel surface is clean and free of oil. The above-mentioned raw materials are compounded according to the mass percentage of the chemical composition of the high rare earth lanthanum-silicon-calcium-iron alloy. The chemical composition of the high rare earth lanthanum-silicon-calcium-iron alloy is as follows: La27-31%, Si34-40%, Ca16-20%, Fe9.6-14.1%, and the rest are impurities. Ther...

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Abstract

The invention discloses a silicon, calcium and iron alloy with high rare earth lanthanum. The chemical components of the alloy comprise the components in percentage by mass: 27-31% of La, 34-40% of Si, 16-20% of Ca and 9.6-14.1% of Fe. The chemical components of the alloy are moderate in proportion and are uniform and stable. The yield of the rare earth lanthanum in steel is over 19%. The impact performance Akv at -20 DEG C is over 190J, and the alloy is higher in plasticity and toughness and low in cost.

Description

technical field [0001] The invention relates to the technical field of metallurgy, in particular to a high rare earth lanthanum-silicon-calcium-iron alloy. Background technique [0002] Rare earth alloy products can be divided into two categories: one is crude rare earth alloys, such as rare earth ferrosilicon alloys, rare earth magnesium ferrosilicon alloys, etc., which are mainly produced from rare earth slag and mixed rare earth metals, with many impurities. Mainly used in the field of cast steel and cast iron casting. The second is refined rare earth alloys, which have higher rare earth content and fewer impurities, such as neodymium-iron alloy (Nd-Fe), but this type of alloy is mainly used in magnetic materials and other fields, and has not yet been applied to the field of steelmaking. [0003] At present, in the production of "rare earth steel" at home and abroad, due to the high content of sulfur and oxygen in the steel, the addition process is not suitable, the yiel...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C30/00C22C35/00
Inventor 岳长青贺景春张怀军丁晓志程德富李文艺韩春鹏方伟
Owner INNER MONGOLIA BAOTOU STEEL UNION
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