Silicon vanadium nitrogen alloy and preparation method thereof

A technology of silicon-vanadium-nitrogen alloy and ferrosilicon, which is applied in the field of silicon-vanadium-nitrogen alloy and its preparation, can solve the problems of low nitrogen content of vanadium-nitrogen alloy, low apparent density of products, unstable quality, etc., and achieve enhanced crystallization and precipitation, The effect of low cost and simple method

Active Publication Date: 2016-01-13
江苏渝鑫科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, although there are many types of vanadium-nitrogen alloys, there are still some deficiencies in increasing and improving the strength and toughness of steel, especially the nitrogen content in vanadium-nitrogen alloys is relatively low,

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0021] Embodiment 1: The silicon-vanadium-nitrogen alloy is composed of the following components in the following weight percentages: vanadium 55%, silicon 15%, nitrogen 17%, iron 8%, carbon 1%, and the rest is a small amount of oxygen, phosphorus and sulfur.

[0022] Preparation method of silicon-vanadium-nitrogen alloy:

[0023] (1) First prepare the silicon-vanadium-nitrogen alloy matrix: select low-density vanadium-nitrogen alloy scraps and fine powder, and grind them to 50-200 mesh with a Raymond mill;

[0024] (2) Take 100 components of the matrix prepared in step (1), and add 30 components of ligand capable of absorbing nitrogen, and the ligand is ferrosilicon powder;

[0025] (3) Add 15-component binder to the matrix and ligand, the binder is yellow dextrin, and the above materials are fully mixed in the mixer;

[0026] (4) Add 10 components of water again to the materials after dry mixing, and then roll and mix them again through the planetary wheel mixer to obtain a mixture wi...

Example Embodiment

[0030] Embodiment 2: The silicon-vanadium-nitrogen alloy is composed of the following components in the following weight percentages: vanadium 50%, silicon 18%, nitrogen 20%, iron 10%, carbon 1%, and the rest is a small amount of oxygen, phosphorus and sulfur.

[0031] Preparation method of silicon-vanadium-nitrogen alloy:

[0032] (1) First prepare the silicon-vanadium-nitrogen alloy matrix: select low-density vanadium-nitrogen alloy scraps and fine powder, and grind them to 50-200 mesh with a Raymond mill;

[0033] (2) Take 100 components of the matrix prepared in step (1), and add 40 components of ligand capable of absorbing nitrogen, and the ligand is silicon nitride;

[0034] (3) Add a 12-component binder to the base and the ligand, the binder is flour, and the above materials are fully mixed in the mixer;

[0035] (4) Add 18 components of water again to the material after dry mixing, and then roll and mix again through the planetary wheel milling mixer to obtain a mixture with a c...

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PUM

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Abstract

The invention discloses silicon vanadium nitrogen alloy. The silicon vanadium nitrogen alloy comprises, by weight percentage, 40-60% of vanadium, 10-20% of silicon, 14-25% of nitrogen, 5-15% of iron, 0.5-2% of carbon and the balance oxygen, phosphorus and sulphur in a small amount. The invention further discloses a preparation method for the silicon vanadium nitrogen alloy. The silicon vanadium nitrogen alloy can improve the tensile strength and rigidity of steel and reduce the weight of the steel. On the other hand, as the nitrogen content is increased, crystallization and precipitation of the vanadium are enhanced, and the addition amount of the vanadium is effectively reduced. The preparation method is low in cost and simple.

Description

technical field [0001] The invention relates to a special steel additive during steelmaking, in particular to a silicon vanadium nitrogen alloy and a preparation method thereof. Background technique [0002] At present, when producing high-strength low-alloy steel materials, it is usually achieved by adding vanadium-containing alloys. In order to reduce the amount of vanadium added and improve the strength and toughness of steel, it is best to add vanadium-containing alloys in the form of vanadium-nitrogen alloys. After adding vanadium-nitrogen alloys to steel to increase nitrogen, a large amount of vanadium that was originally in a solid solution state will be transformed into a precipitated state. V(CN), so as to give full play to the precipitation strengthening effect of vanadium. At the same time, the increase of nitrogen promotes the precipitation of V(CN) at the phase interface during the transformation from austenite to ferrite, which effectively prevents the growth ...

Claims

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Application Information

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IPC IPC(8): C22C27/02C22C1/05
Inventor 黄启会蒋荣奎胡力
Owner 江苏渝鑫科技股份有限公司
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