High-nitrogen vanadium-nitrogen alloy VN18 and production method thereof

A technology of high-nitrogen vanadium-nitrogen alloy and vanadium-nitrogen alloy, which is applied in the production field of vanadium-containing alloys, can solve problems such as unstable product quality, high production cost, and low nitrogen content, and achieve improved surface quality, improved quality, and good quality Effect

Inactive Publication Date: 2013-09-18
高波
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a high-nitrogen vanadium-nitrogen alloy VN18 and its production method to solve the problems of poor quality, low nitrogen content, high production cost and unstable product quality in the prior art

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Combine powdered vanadium pentoxide with a mass of 1000kg and a vanadium pentoxide grade of 98% and 275.5kg of crystalline graphite powder with a fixed carbon content of 98% and perform mechanical activation treatment by grinding. The grinding time is greater than or equal to 2 hours. After passing through -200 mesh, add 10kg of ferric oxide and 55kg of metal vanadium powder as catalysts, add 15kg of ammonium chloride, 8kg of calcium fluoride, 7kg of ferrous ammonium sulfate and 20kg of polyvinyl alcohol and stir evenly, then add 70.5kg of water Wet mix evenly to get the mixture, place it at 80°C for 12 hours, and then mechanically form it into a ￠50mm green block. The green block is naturally dried for a week and then sent to the calciner for calcination. The temperature in the drying stage is 300°C , the pre-reduction temperature is 700°C, the temperature in the carbonization stage is 1600°C, the bulking temperature is 1700°C, the temperature in the nitriding stage is ...

Embodiment 2

[0056] Combine powdered vanadium trioxide with a mass of 1000kg and a metal vanadium content of 64.5% and 245.8kg of crystalline graphite powder with a fixed carbon content of 98% and perform mechanical activation treatment by grinding. The grinding time is greater than or equal to 2 hours. After grinding, all After passing through -200 mesh, add 10kg of ferrovanadium powder (all passing through -200 mesh) as a catalyst, add 16kg of ammonium carbonate, 12kg of calcium fluoride, 9kg of ferrous ammonium sulfate and 21kg of polyvinyl alcohol and stir evenly, then add 125kg of water wet mix Uniform to obtain the mixture, placed at 80°C for 12 hours, mechanically formed into a ￠50mm green block, dried naturally for a week, then sent to the calciner for calcination, the temperature in the drying stage is 300°C, carbonized The temperature in the stage is 1600°C, the temperature in the bulking stage is 1700°C, the temperature in the nitriding stage is 1400°C, the cooling stage is water...

Embodiment 3

[0058] Put powdered vanadium tetroxide with a mass of 1000kg and a vanadium tetroxide grade of 98% together with 315kg of carbon black powder with a fixed carbon content of 95%, and perform mechanical activation treatment by grinding. The grinding time is greater than or equal to 2 hours. After grinding, all Through -200 mesh, add 10kg of high-purity iron powder as a catalyst, add 14kg of ammonium vanadate, 11kg of calcium fluoride, and 7kg of ferrous ammonium sulfate and stir evenly, then add 80kg of flour slurry as a binder and wet mix evenly to obtain a mixture. After being placed at 80°C for 12 hours, it is mechanically formed into a coarse block of ￠50mm. The block is naturally dried for a week and then sent to a calciner for calcination. The temperature in the drying stage is 300°C, and the temperature in the carbonization stage is 1600°C. The temperature in the bulking stage is 1700°C, the temperature in the nitriding stage is 1400°C, the cooling stage is water-cooled to...

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PUM

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Abstract

The invention discloses a high-nitrogen vanadium-nitrogen alloy VN18 and a production method thereof, which aim at solving the problems of poor quality, low nitrogen content, higher production cost and instable product quality in the prior art. The high-nitrogen vanadium-nitrogen alloy VN18 comprises the following components: vanadium oxide, carbon powder, a catalyst, a guiding agent, a nitrogen fixating agent, a densifying agent and a binding agent according to the weight ratio of (70-80):(15-25):(4-6):(0.5-2):(0.2-1):(0.6-0.8):(2-6). The invention further provides a production method of the high-nitrogen vanadium-nitrogen alloy VN18. The high-nitrogen vanadium-nitrogen alloy VN18 is high in nitrogen content, large in density, high in vanadium yield, and low in production cost.

Description

technical field [0001] The invention relates to a vanadium-nitrogen alloy and a production method thereof, which is particularly suitable for the production of vanadium-containing alloy added during the production of vanadium-containing steel. Background technique [0002] At present, when producing vanadium-containing steel, it is usually achieved by adding vanadium-containing alloys. In order to reduce the amount of vanadium added and improve the strength, hardness, and toughness of steel, it is best to add vanadium-containing alloys in the form of vanadium-nitrogen alloys. Therefore , Steel production has an increasing demand for high-quality vanadium-nitrogen alloys, especially high-nitrogen vanadium-nitrogen alloys. At present, although there are many production methods for vanadium-nitrogen alloys, such as vacuum method, atmospheric pressure nitriding method, etc., and the production has reached a relatively high level, they all have problems such as low output and un...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C27/02C22C1/10
Inventor 高博
Owner 高波
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