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High-nitrogen silicon-vanadium-iron alloy and production method thereof

A ferro-vanadium alloy and production method technology, which is applied in the field of alloys, can solve problems such as instability, low density of finished alloy products, and low nitrogen content of high-nitrogen silicon-vanadium-iron alloys, so as to prevent product oxidation, promote grain refinement, improve strength and The effect of corrosion resistance

Pending Publication Date: 2022-07-26
河北诺凡新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention proposes a high-nitrogen silicon-vanadium-iron alloy and a production method thereof, which solves the problems in the prior art that the nitrogen content of the high-nitrogen silicon-vanadium-iron alloy is relatively low and unstable, and the density of the finished alloy is low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] S1. Weigh 38kg silicon powder, 51kg vanadium powder, and 13kg iron powder, and mix them evenly;

[0025] S2, vacuum to -0.02MPa;

[0026] S3, feed nitrogen 0.05MPa;

[0027] S4, heat up to 750°C for 4h, continue to heat up to 1550°C for 8h, cool to room temperature and release;

[0028] The obtained high nitrogen silicon vanadium iron alloy has the following components: nitrogen 20.2%, silicon 29.6%, vanadium 40.6%, iron 9.5%, and unavoidable impurities, and the apparent density is 6.1 g / cm 3 .

Embodiment 2

[0030] S1. Weigh 34kg of silicon powder, 47kg of vanadium powder, and 20kg of iron powder, and mix them evenly;

[0031] S2, vacuum to -0.02MPa;

[0032] S3, feeding nitrogen 0.06MPa;

[0033] S4, heat up to 700°C for 3h, continue to heat up to 1550°C for 9h, cool to room temperature and release;

[0034] The obtained high nitrogen silicon vanadium iron alloy has the following components: nitrogen 24.3%, silicon 25.8%, vanadium 34.9%, iron 14.9%, and unavoidable impurities, and the apparent density is 5.8g / cm 3 .

Embodiment 3

[0036] S1. Weigh 34kg of silicon powder, 42kg of vanadium powder, and 25kg of iron powder, and mix them evenly;

[0037] S2, vacuum to -0.02MPa;

[0038] S3, feed nitrogen 0.05MPa;

[0039] S4, heat up to 800 °C for 3 hours, continue to heat up to 1600 °C for 8 hours, cool to room temperature and release;

[0040] The obtained high nitrogen silicon vanadium iron alloy has the following components: nitrogen 19.3%, silicon 26.9%, vanadium 33.9%, iron 19.8%, and inevitable impurities, and the apparent density is 5.9 g / cm 3 .

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Abstract

The invention relates to the technical field of alloys, and provides a high-nitrogen silicon-vanadium-iron alloy and a production method thereof, the high-nitrogen silicon-vanadium-iron alloy comprises the following components: 15%-35% of nitrogen, 20%-45% of silicon, 30%-60% of vanadium, 3%-20% of iron and inevitable impurities; wherein the ratio of the sum of the percentage content of nitrogen and silicon to the percentage content of vanadium is (1.2-1.5): 1; the production method of the high-nitrogen silicon-vanadium-iron alloy comprises the following steps: S1, calculating vanadium powder, silicon powder and iron powder according to the component content, and uniformly mixing; s2, vacuumizing is carried out; s3, nitrogen is introduced; and S4, the temperature is increased to 700-800 DEG C, heat preservation is conducted for 3-4 h, the temperature continues to be increased to 1500-1600 DEG C, heat preservation is conducted for 8-9 h, cooling is conducted to the room temperature, and According to the technical scheme, the problems that in the prior art, the nitrogen content of the high-nitrogen silicon-vanadium-iron alloy is low and unstable, and the density of an alloy finished product is low are solved.

Description

technical field [0001] The invention relates to the technical field of alloys, in particular to a high nitrogen silicon vanadium iron alloy and a production method thereof. Background technique [0002] In the process of steelmaking, the addition of alloys such as carbonitrides can play a role in grain refinement and precipitation hardening. By controlling the grain refinement of the steel and the physical metallurgical process of carbonitride precipitation strengthening, engineering structural materials with the best mechanical properties such as high strength, high toughness, high weldability, and good formability can be obtained in the hot rolled state. - Microalloyed steel. Due to its excellent mechanical properties and corrosion resistance, high nitrogen austenitic steel bars have been paid more and more attention by people. [0003] In recent years, with the continuous development of metallurgical technology, the content of nitrogen in microalloying additives has bee...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C35/00C22C27/02C22C28/00C22C30/00C22C1/02
CPCC22C35/00C22C27/025C22C28/00C22C30/00C22C1/02
Inventor 卢世国李香菊
Owner 河北诺凡新材料科技有限公司
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