Method for rapid preparation of vanadium-nitrogen alloy

A vanadium-nitrogen alloy, fast technology, applied in the field of metallurgy, can solve the problems of complex process, long production cycle, low productivity, etc., achieve the effect of shortening process time, reducing maintenance cost and improving production efficiency

Inactive Publication Date: 2014-08-27
SICHUAN ZHANXIANG SPECIAL ALLOY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the methods for producing vanadium nitride in the prior art generally have the following disadvantages: slow reaction speed, long production cycle, low productivity, high energy consumption, complicated process, low reliability of equipment, poor controllability...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Embodiment 1: a kind of method for rapidly preparing vanadium nitrogen alloy, it comprises the following steps:

[0020] S1. Ingredients: Weigh the raw materials in the following parts by weight and set aside;

[0021] Vanadium pentoxide powder (content 98.5%, particle size 100 mesh): 90; graphite powder (particle size 60 mesh): 20;

[0022] Sodium silicate aqueous solution: 5; Iron powder: 1;

[0023] S2. Pretreatment: Put the above-mentioned raw materials into a mixer and mix them evenly, then put them into a pair of roller-type ball pressing equipment, press the materials into flat balls, and put them into an oven for drying treatment. The drying temperature is 250°C. The water content of flat spherical material is 2.5%;

[0024] S3. Feeding: Place the pretreated oblate material in the graphite material frame, transport the graphite material frame to the vacuum furnace with a transfer device, and seal the vacuum furnace, start the vacuum pump, so that the vacuum de...

Embodiment 2

[0027] Embodiment 2: a kind of method for rapidly preparing vanadium nitrogen alloy, it comprises the following steps:

[0028] S1. Ingredients: Weigh the raw materials in the following parts by weight and set aside;

[0029] Vanadium pentoxide powder (content 99%, particle size 80 mesh): 110; graphite powder (particle size 50 mesh): 30;

[0030] Sodium silicate aqueous solution: 10; Iron powder: 1.5;

[0031] S2. Pretreatment: Put the above-mentioned raw materials into a mixer and mix them evenly, then put them into a pair of roller-type ball pressing equipment, press the materials into flat balls, and put them into an oven for drying treatment. The drying temperature is 350°C. The water content of flat spherical material is 2%;

[0032] S3. Feeding: Place the pretreated oblate material in the graphite material frame, transport the graphite material frame to the vacuum furnace with a transfer device, and seal the vacuum furnace, start the vacuum pump, so that the vacuum deg...

Embodiment 3

[0035] Embodiment 3: a kind of method for rapidly preparing vanadium nitrogen alloy, it comprises the following steps:

[0036] S1. Ingredients: Weigh the raw materials in the following parts by weight and set aside;

[0037] Vanadium pentoxide powder (content 99.2%, particle size 60 mesh): 100; graphite powder (particle size 45 mesh): 24;

[0038] Sodium silicate aqueous solution: 7; Iron powder: 1.2;

[0039] S2. Pretreatment: put the above raw materials into a mixer and mix them evenly, then put them into a pair of roller briquetting equipment, press the materials into flat balls, and put them into an oven for drying treatment. The drying temperature is 280°C, to The water content of the flat spherical material is 1.5%; S3. Feeding: the pretreated flat spherical material is placed in the graphite material frame, and the graphite material frame is transported to the vacuum furnace with a transfer device, and the vacuum furnace is sealed, and the vacuum pump is started. The...

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PUM

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Abstract

The invention discloses a method for rapid preparation of a vanadium-nitrogen alloy. The method comprises the following steps: S1, preparing ingredients: weighing and taking a vanadium pentoxide powder, a graphite powder, a sodium silicate aqueous solution and an iron powder for standby application; S2, pretreating: mixing evenly the above raw materials, pressing into oblate spheroids, and drying; S3, feeding: placing the dried oblate-spheroid material on a graphite material basket, sending into a vacuum furnace by a transfer device, sealing the vacuum furnace, and starting a vacuum pump; S4, carrying out vacuum nitridation sintering: allowing the temperature in the furnace to reach 1400-1500 DEG C in 5 hours, then stopping the vacuum pump, carrying out deep carbonation and nitridation reaction, and continuously filling nitrogen during the reaction; and S5, discharging: after vacuum treatment, continuing to fill the nitrogen, cutting off power, cooling the vacuum furnace, when the temperature is dropped to 190-210 DEG C, stopping supplying nitrogen, opening the furnace, and taking out the graphite material basket. The method has the advantages of simple operation, low production cost, accurate process control, fast preparation, low energy consumption, and stable product production; and the vanadium-nitrogen alloy prepared by the method is high in nitrogen content and low in impurity content.

Description

technical field [0001] The invention belongs to the technical field of metallurgy, and in particular relates to a method for rapidly preparing vanadium-nitrogen alloys. Background technique [0002] Vanadium-nitrogen alloy is a new type of alloy additive that can replace ferro-vanadium for the production of micro-alloyed steel. Adding vanadium nitride to steel can improve the comprehensive mechanical properties of steel such as strength, toughness, ductility and thermal fatigue resistance. And the steel has good weldability, and the addition of vanadium nitride saves 30-40% of the added vanadium when the same strength is achieved, thereby reducing the cost. In recent years, due to the obvious technical and economic advantages of vanadium-nitrogen microalloying technology, vanadium-nitrogen microalloys have been used in high-strength steel bars, non-quenched and tempered steels, high-strength strips, CSP products, high-strength thick plates and thick-walled H-beams, It has b...

Claims

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Application Information

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IPC IPC(8): C22C1/05C22C35/00
Inventor 张平俊
Owner SICHUAN ZHANXIANG SPECIAL ALLOY TECH
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