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A kind of ferro-niobium nitride alloy and its preparation method and application

A niobium-iron alloy and niobium-iron alloy technology, applied in metal processing equipment, transportation and packaging, etc., can solve problems such as high energy consumption, complicated process, and cumbersome procedures

Active Publication Date: 2021-09-14
承德锦科科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The disadvantage of this method is that various components in niobite powder (such as silicon, iron, aluminum, etc.) will generate carbides, and the process is complicated, the heating temperature is high, and the energy consumption is high, resulting in high production costs.
Another method is the method disclosed in Chinese patent CN104593632B, which uses an alloy electric furnace to heat ferroniobium and ferroniobium in a three-stage heat-retaining nitriding method to prepare ferroniobium nitride. Although this method avoids the generation of metal carbides, it still has tedious procedures and high heating temperature Disadvantages of high energy consumption and high production cost

Method used

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preparation example Construction

[0018] The invention provides a method for preparing ferroniobium nitride alloy, comprising the following steps:

[0019] Put the powder material containing ferroniobium alloy powder in a reactor, and ignite the powder material through an ignition device in a nitrogen atmosphere to carry out a self-propagating combustion synthesis reaction to obtain ferroniobium nitride alloy.

[0020] In the present invention, the composition of the ferroniobium alloy powder preferably includes: niobium 50-75wt.%, unavoidable impurities ≤ 2wt.%, and the balance is iron; more preferably includes niobium 55-70wt.%, unavoidable Impurities ≤ 2wt.%, the balance being iron; further preferably including niobium 60-65wt.%, unavoidable impurities ≤ 2wt.%, and the balance being iron. In the present invention, the particle size distribution of the ferroniobium alloy powder is preferably: the ferroniobium alloy powder with a particle size of 74 to 420 μm accounts for 20 to 75% of the total mass of the fe...

Embodiment 1

[0036] 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 70.3% of the total mass of the ferroniobium alloy powder, and the particle size is less than 74μm ferroniobium alloy powder accounts for 29.7% of the total mass of ferroniobium alloy powder;

[0037] Take 45kg of the ferroniobium alloy powder and lay it flat in a high-pressure reaction furnace. After airtight, evacuate to -0.06--0.08MPa, and fill in high-purity nitrogen with a purity of 99.99%, so that the pressure in the high-pressure reaction furnace is maintained at 3-0.08 MPa. 12MPa, ignite the ferroniobium alloy powder through the ignition device, and carry out the self-propagating combustion synthesis reaction. During the reaction, the pressure in the high-pressure reaction furnace is maintained at 3-12MPa until ...

Embodiment 2

[0040] Take ferroniobium alloy containing 65wt.% niobium, grind it after crushing to obtain ferroniobium alloy powder, the particle size of the ferroniobium alloy powder is: the ferroniobium alloy powder with a particle size of 74-420 μm accounts for 61.2% of the total mass of the ferroniobium alloy powder, and the particle size is less than 74 μm The ferroniobium alloy powder accounts for 38.8% of the total mass of the ferroniobium alloy powder;

[0041] Take 45kg of the ferroniobium alloy powder and lay it flat in a high-pressure reaction furnace. After airtight, evacuate to -0.06--0.08MPa, and fill in high-purity nitrogen with a purity of 99.99%, so that the pressure in the high-pressure reaction furnace is maintained at 3-0.08 MPa. 12MPa, ignite the ferroniobium alloy powder through the ignition device, and carry out the self-propagating combustion synthesis reaction. During the reaction, the pressure in the high-pressure reaction furnace is maintained at 3-12MPa until the ...

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Abstract

The invention provides a ferroniobium nitride alloy and its preparation method and application, belonging to the technical field of alloy materials. The preparation method of ferroniobium nitride alloy provided by the present invention comprises the following steps: placing the powder material containing ferroniobium alloy powder in a reactor, and igniting the powder material through an ignition device in a nitrogen atmosphere to carry out a self-propagating combustion synthesis reaction , to obtain ferroniobium nitride alloy. According to the method provided by the invention, the powder material containing ferroniobium alloy powder is synthesized by self-propagating combustion in nitrogen atmosphere to produce ferroniobium nitride alloy, no external heating source is needed, the equipment is simple, the process is simple, and the low-cost preparation of ferroniobium nitride alloy is realized. The prepared ferroniobium nitride alloy can meet the needs of iron and steel smelting, and compared with the known preparation process of ferroniobium nitride, the process is simple, the product uniformity and stability are good, the production cost is greatly reduced, and the economic and social benefits are remarkable.

Description

technical field [0001] The invention relates to the technical field of alloy materials, in particular to a ferroniobium nitride alloy and its preparation method and application. Background technique [0002] Ferroniobium alloy is a kind of alloy widely used in iron and steel smelting process. In the process of iron and steel production, adding ferroniobium alloy can achieve the effect of improving the strength of steel through microalloying. In order to give full play to the microalloy strengthening effect of niobium, it is necessary to add an appropriate amount of nitrided alloy during steelmaking to form strong carbonitrides with microalloying element niobium to improve the precipitation strengthening and precipitation strengthening effect of microalloying element niobium. However, the absorption rate of nitrided alloys is low, the probability of two different alloys forming niobium carbonitride in molten steel is low, and the use efficiency of niobium-iron alloys and nitr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C27/02C22C35/00B22F1/00C22C1/04C22C1/10
CPCC22C27/02C22C35/00C22C1/10B22F1/052
Inventor 贾怡晗王清晨曹长山常福增刘亚亮张伟高功达刘克忠晋心翠
Owner 承德锦科科技股份有限公司
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