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Method for preparing vanadium-aluminum alloy

A vanadium-aluminum alloy and preparation process technology, which is applied in the field of preparation of vanadium-aluminum master alloys, can solve problems such as poor uniformity, difficult control of V element content, difficulty in melting vanadium-aluminum alloys, etc., and achieve obvious energy-saving effects

Inactive Publication Date: 2010-12-08
CHENGDE TIANDA VANADIUM IND
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Problems solved by technology

At present, the production of vanadium-aluminum alloy mainly adopts the traditional metal thermal reduction method (one-step method). The products produced by this method have high impurity content, especially high content of oxygen, carbon and nitrogen, poor uniformity, and the content of V element is difficult to control.
Moreover, in the refining process of vanadium-aluminum alloy, affected by physical factors such as vanadium-aluminum alloy melting point, magnetic permeability, and resistivity, it is difficult to melt vanadium-aluminum alloy in an intermediate frequency vacuum induction furnace, and the refining effect of vanadium-aluminum alloy is difficult to meet the requirements and meet the requirements. Demand for high-end titanium alloy products

Method used

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  • Method for preparing vanadium-aluminum alloy

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Effect test

Embodiment 1

[0014] The vanadium-aluminum alloy with the grade of AlV40 was prepared.

[0015] First set V 2 o 5 100kg, Al 126kg, using metal thermal reduction method, using aluminum as a reducing agent to reduce vanadium pentoxide to prepare a one-step vanadium-aluminum alloy; then crush the prepared one-step vanadium-aluminum alloy into a particle size of 30-50mm, and dry it at 120°C Dry in the kiln for 10-12 hours, then add 7.45kg of aluminum beans, and carry out two-step refining in a vacuum intermediate frequency induction furnace to obtain the final product of vanadium aluminum alloy. , Si is less than 0.25, C is less than 0.08, 0 is less than 0.05, and aluminum is the balance. The content of alloy impurities is low, and the uniformity of the alloy is good.

Embodiment 2

[0017] A vanadium-aluminum alloy with a grade of AlV50 was prepared.

[0018] First set V 2 o 5 100kg, Al 100kg, using metal thermal reduction method, using aluminum as a reducing agent to reduce vanadium pentoxide to prepare a one-step vanadium-aluminum alloy; then crush the prepared one-step vanadium-aluminum alloy to a particle size of 30-50mm, and dry it in a kiln at 120°C Dry it inside for 12 hours, then add 5.45kg of aluminum beans, and carry out two-step refining in a vacuum intermediate frequency induction furnace to obtain the final product of vanadium aluminum alloy. 0.25, C is less than 0.08, 0 is less than 0.05, aluminum is the balance. The content of alloy impurities is low, and the uniformity of the alloy is good.

Embodiment 3

[0020] The vanadium-aluminum alloy with the grade of AlV55 was prepared.

[0021] First set V 2 o 5 100kg, Al 86kg, using metal thermal reduction method, using aluminum as a reducing agent to reduce vanadium pentoxide to prepare a one-step vanadium-aluminum alloy; then crush the prepared one-step vanadium-aluminum alloy to a particle size of 30-50mm, and dry it in a kiln at 120°C Dry it inside for 11 hours, then add 9.27kg of aluminum beans, and carry out two-step refining in a vacuum intermediate frequency induction furnace to obtain the final product of vanadium-aluminum alloy. 0.28, C is less than 0.10, 0 is less than 0.08, aluminum is the balance. The content of alloy impurities is low, and the uniformity of the alloy is good.

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Abstract

The invention discloses a method for preparing a vanadium-aluminum alloy and relates to a method for preparing a vanadium-aluminum intermediate alloy for producing a titanium alloy. The method is characterized by comprising the following steps of: firstly, with aluminum as a reducing agent, reducing vanadium pentoxide to prepare a vanadium-aluminum alloy in one step by adopting a metallothermic reduction method; secondly, crushing and drying the vanadium-aluminum alloy prepared in one step; and adding aluminum in the dried vanadium-aluminum alloy prepared in one step and refining in a second step in a vacuum intermediate-frequency induction furnace to obtain a final product of the vanadium-aluminum alloy. In the method, by taking the aluminum as the reducing agent in the metallothermic reduction method (one-step method) and reserving a small part of aluminum during smelting of the vanadium-aluminum alloy and adding the aluminum in the refining of the vacuum intermediate-frequency induction furnace, the problem that the vanadium-aluminum alloy is molten in the vacuum intermediate-frequency induction furnace can be effectively solved. In addition, compared with the one-step method for preparing the alloy, the appearance quality, the consistency, impurity components, the uniformity and other aspects of the alloy are superior and the aim of refining can be achieved. Meanwhile, when being used for refining the vanadium-aluminum alloy, the process can be used for completely molting the alloy at the lower feeding power and has remarkable the energy-saving effect.

Description

technical field [0001] A preparation method of vanadium aluminum alloy relates to a preparation method of vanadium aluminum master alloy for producing titanium alloy. Background technique [0002] Titanium alloys are widely used in military industry, aerospace industry and civil industry, and vanadium-aluminum master alloy is an important raw material for producing titanium alloys. At present, the traditional metal thermal reduction method (one-step method) is mainly used in the production of vanadium-aluminum alloys. The products produced by this method have high impurity content, especially high content of oxygen, carbon and nitrogen, poor uniformity, and difficult to control the content of V elements. Moreover, in the vanadium-aluminum alloy refining process, affected by physical factors such as vanadium-aluminum alloy melting point, magnetic permeability, and resistivity, it is difficult to melt vanadium-aluminum alloy in an intermediate frequency vacuum induction furnac...

Claims

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Application Information

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IPC IPC(8): C22C1/02C22C21/00C22B5/04C22B34/22
Inventor 杨植松韩中祥杨英君
Owner CHENGDE TIANDA VANADIUM IND
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