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A kind of vanadium niobium iron alloy and its preparation method and application

A technology of vanadium-niobium-iron alloy and vanadium-iron alloy, which is applied in the field of vanadium-niobium-iron alloy and its preparation, can solve the problems that the strengthening effect cannot be fully exerted, the cost is high, and the operation is cumbersome.

Active Publication Date: 2022-02-11
承德锦科科技股份有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the above methods are used for microalloying, the nitrogen content in the steel is low, the strengthening effect of vanadium and niobium cannot be fully exerted, and the cost is high; Adding two alloys, the operation is more cumbersome

Method used

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preparation example Construction

[0023] The invention provides a method for preparing vanadium-niobium-iron alloy, comprising the following steps:

[0024] placing the mixed raw material powder in a reactor, and igniting the mixed raw material powder through an ignition device in a nitrogen atmosphere to carry out a self-propagating combustion synthesis reaction to obtain vanadium-niobium-iron alloy;

[0025] Wherein, the composition of described ferro-vanadium niobium nitride comprises:

[0026] Vanadium 5~60wt.%, Niobium 5~60wt.%, Silicon 1~15wt.%, Manganese 1~4wt.%, Aluminum 1~10wt.%, Nitrogen 5~20wt.%, Unavoidable impurities ≤ 2wt.% , and the balance is iron.

[0027] In the present invention, the composition of the vanadium niobium nitride iron alloy includes 5-60wt.% of vanadium, preferably 10-50wt.%; 5-60wt.% of niobium, preferably 10-50wt.%; 1-15wt.% of silicon %, preferably 2-10wt.%; manganese 1-4wt.%, preferably 2-3wt.%; aluminum 1-10wt.%, preferably 2-9wt.%; nitrogen 5-20wt.%, preferably 8 ~18wt...

Embodiment 1

[0045] Take the vanadium-iron alloy containing 80wt.% vanadium, grind it after crushing to obtain the vanadium-iron alloy powder, the particle size distribution of the vanadium-iron alloy powder is: the vanadium-iron alloy powder with a particle size of 74-420 μm accounts for 65.9% of the total mass of the vanadium-iron alloy powder, and the particle size is less than 74μm vanadium iron alloy powder accounts for 34.1% of the total mass of vanadium iron alloy powder;

[0046] Take ferroniobium alloy containing 65wt.% niobium, grind it after crushing to obtain ferroniobium alloy powder, the particle size distribution of the ferroniobium alloy powder is: the ferroniobium alloy powder with a particle size of 74-420 μm accounts for 51.5% of the total mass of the ferroniobium alloy powder, and the particle size is less than 74μm ferroniobium alloy powder accounts for 48.5% of the total mass of ferroniobium alloy powder;

[0047] Ferrosilicon alloy powder containing 75wt.% of silicon...

Embodiment 2

[0055] Take the vanadium-iron alloy containing 50wt.% of vanadium, grind it after crushing to obtain vanadium-iron alloy powder, the particle size distribution of the vanadium-iron alloy powder is: the vanadium-iron alloy powder with a particle size of 74-420 μm accounts for 52.4% of the total mass of the vanadium-iron alloy powder, and the particle size is less than 74μm vanadium iron alloy powder accounts for 47.6% of the total mass of vanadium iron alloy powder;

[0056] Take ferroniobium alloy containing 65wt.% niobium, grind it after crushing to obtain ferroniobium alloy powder, the particle size distribution of the ferroniobium alloy powder is: the ferroniobium alloy powder with a particle size of 74-420 μm accounts for 69.2% of the total mass of the ferroniobium alloy powder, and the particle size is less than 74μm ferroniobium alloy powder accounts for 30.8% of the total mass of ferroniobium alloy powder;

[0057] Ferrosilicon alloy powder containing 75wt.% silicon is ...

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Abstract

The invention provides a vanadium niobium iron alloy and its preparation method and application, belonging to the technical field of alloy materials. According to the method provided by the invention, the raw material mixed powder is subjected to self-propagating combustion synthesis reaction in a nitrogen atmosphere to obtain vanadium-niobium-iron alloy, and the ratio of the vanadium-niobium-iron alloy N / (V+Nb) is high (for 0.25~0.31), can not only give full play to the precipitation strengthening effect of vanadium, but also give full play to the fine grain strengthening effect of niobium, and reduce the cost; at the same time, only one alloy can be added in the tapping process, and the operation is simple. In addition, the method provided by the present invention does not require an external heat source, has simple equipment and simple procedures, and realizes the low-cost preparation of vanadium-niobium-iron alloy. The prepared vanadium-niobium-iron alloy has good uniformity and stability, and can meet the requirements of iron and steel smelting. Remarkable economic and social benefits.

Description

technical field [0001] The invention relates to the technical field of alloy materials, in particular to a vanadium-niobium-iron alloy and its preparation method and application. Background technique [0002] In the field of alloy materials, vanadium and niobium are two important microalloying elements, and their action mechanisms in steel are different. Vanadium has the strongest precipitation strengthening effect in steel, and niobium has the strongest fine grain strengthening effect in steel. As a result, in order to take full advantage of the strengthening effects of vanadium and niobium, it is necessary to develop composite vanadium-niobium alloys. [0003] In the prior art, niobium-iron alloys, vanadium-nitrogen alloys or a combination of these two alloys are usually used for microalloying to strengthen the properties of steel. However, when the above method is used for microalloying, the nitrogen content in the steel is low, the strengthening effect of vanadium and n...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C29/16C22C1/10
CPCC22C29/16C22C1/10
Inventor 刘克忠翁玉娟贾怡晗王清晨王朝晖孟立新王彬彬刘健曹长山刘亚亮池浩巍李阳高功达
Owner 承德锦科科技股份有限公司
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