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Vanadium-aluminum-iron intermediate alloy and preparation method thereof

A master alloy, vanadium-aluminum technology, which is applied in the field of vanadium-aluminum-iron master alloy and its preparation, can solve the problems of poor uniformity of vanadium-aluminum-iron alloy, increase process and equipment, increase production cycle, etc., achieve low melting point of metal, and facilitate production and operation , the effect of less heat loss

Active Publication Date: 2020-05-08
CHENGDE TIANDA VANADIUM IND
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Vanadium-aluminum-iron alloy is a ternary alloy. At present, the preparation of vanadium-aluminum-iron master alloy usually adopts an out-of-furnace method and a two-step method. For example, CN200310119074.9 discloses a vanadium-aluminum-iron master alloy and its preparation method. Vanadium pentoxide, aluminum, iron, calcium fluoride and the slag produced by the smelting of vanadium-aluminum-ferroalloy are used as raw materials, and the vanadium-aluminum-ferroalloy is prepared by the ignition method outside the furnace. This method has the advantages of simple equipment, convenient operation and less investment. The vanadium-aluminum-iron alloy prepared by the method has poor uniformity, high impurity content and serious inclusions inside the alloy; CN201210125129.6 discloses a vanadium-aluminum-iron master alloy and a preparation method thereof. Al and Fe are added in two steps. In the first step, vanadium pentoxide, aluminum, iron, calcium fluoride and slag are used as raw materials, and the vanadium-aluminum-iron primary alloy is prepared by the ignition method outside the furnace. In the second step, aluminum, iron, and The vanadium-aluminum-iron primary alloy is vacuum smelted in a vacuum melting furnace as a raw material to obtain the vanadium-aluminum-iron master alloy. The vanadium-aluminum-iron master alloy prepared by this method has high purity, uniformity and density, but this method increases the process and equipment , cost increase, production cycle increase

Method used

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  • Vanadium-aluminum-iron intermediate alloy and preparation method thereof
  • Vanadium-aluminum-iron intermediate alloy and preparation method thereof
  • Vanadium-aluminum-iron intermediate alloy and preparation method thereof

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preparation example Construction

[0022] The invention provides a method for preparing a vanadium-aluminum-iron master alloy, comprising the following steps:

[0023] Mix aluminum, vanadium pentoxide and iron to obtain a mixed material;

[0024] The mixed material is subjected to vacuum thermite reaction to obtain alloy liquid;

[0025] The alloy liquid is cooled to obtain a vanadium-aluminum-iron master alloy.

[0026] In the present invention, unless otherwise specified, the required preparation materials are commercially available products well known to those skilled in the art.

[0027] The invention mixes aluminum, vanadium pentoxide and iron to obtain a mixed material. In the present invention, the forms of the aluminum, vanadium pentoxide and iron are preferably powders, and the present invention has no special requirements on the particle size of the powders, and the corresponding conventional powders can be selected; the aluminum The purity is preferably ≥99.8%, the purity of vanadium pentoxide is ...

Embodiment 1

[0043] (1) The aluminum powder, vanadium pentoxide, and iron powder are dried separately at a drying temperature of 120° C. and a drying time of 12 hours.

[0044] (2) Proportion of raw materials: 2.46kg of aluminum powder, 3.59kg of vanadium pentoxide, and 0.30kg of iron powder. Put the raw materials into a V-shaped mixer and mix them well to ensure sufficient contact between the raw materials to obtain a mixed material.

[0045] (3) Put the mixed material into the corundum crucible in the vacuum reaction vessel, the charging temperature is 30°C, vacuumize to -0.08MPa, ignite, and carry out vacuum thermite reaction, the reaction temperature is 1550°C, the reaction time is 35s, and cool for 12h Finally, the crucible was dismantled, the alloy ingot was taken out, and weighed.

[0046] (4) Polishing and decontaminating the surface of the alloy ingot to obtain a vanadium-aluminum-iron master alloy.

[0047] According to the conventional method, one position of the vanadium-alumi...

Embodiment 2

[0052] (1) The aluminum powder, vanadium pentoxide, and iron powder are dried separately at a drying temperature of 120° C. and a drying time of 12 hours.

[0053] (2) Proportion of raw materials: 2.43kg of aluminum powder, 3.64kg of vanadium pentoxide, and 0.33kg of iron powder. Put the raw materials into a V-shaped mixer and mix them well to ensure sufficient contact between the raw materials to obtain a mixed material.

[0054] (3) Put the mixed material into the corundum crucible in the vacuum reaction vessel, the charging temperature is 40°C, vacuumize to -0.10MPa, ignite, and carry out vacuum thermite reaction, the reaction temperature is 1580°C, the reaction time is 32s, and cool for 12h Finally, the crucible was dismantled, the alloy ingot was taken out, and weighed.

[0055] (4) Polishing and decontaminating the surface of the alloy ingot to obtain a vanadium-aluminum-iron master alloy.

[0056] According to the method described in embodiment 1, a position (same as t...

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Abstract

The invention provides a vanadium-aluminum-iron intermediate alloy and a preparation method thereof, and relates to the technical field of metal materials. The preparation method of the vanadium-aluminum-iron intermediate alloy comprises the following steps that aluminum, vanadium pentoxide and iron are mixed to obtain a mixed material; the mixed material is subjected to vacuum aluminothermic reaction to obtain alloy liquid; and the alloy liquid is cooled to obtain the vanadium-aluminum-iron intermediate alloy. According to the vanadium-aluminum-iron intermediate alloy and the preparation method thereof, aluminum, vanadium pentoxide and iron serve as raw material, the vanadium-aluminum-iron intermediate alloy is prepared through a vacuum aluminothermic reduction method, the prepared vanadium-aluminum-iron intermediate alloy is high in purity, compact, uniform in component and low in gas-phase impurity content, the defects of element segregation, poor compatibility, high gas-phase impurity content and the like in titanium alloy are effectively overcome, and titanium alloy production and operation are facilitated.

Description

technical field [0001] The invention relates to the technical field of metal materials, in particular to a vanadium-aluminum-iron master alloy and a preparation method thereof. Background technique [0002] Titanium and its alloys have excellent properties, such as corrosion resistance, high temperature resistance, low temperature resistance, high strength, non-magnetic, etc., and have good comprehensive process performance. They have gradually become irreplaceable materials in the field of modern industrial science and technology. Aerospace industry, ship manufacturing industry, chemical industry, electric power industry, metallurgical industry, textile industry, food industry, medical industry, vehicle manufacturing industry, sports and leisure industry and other fields have a wide range of applications. [0003] With the continuous development of the titanium alloy industry, more and more metals are added to titanium alloys in the form of master alloys, which avoids the t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C27/02C22B5/04C22C1/03
CPCC22B5/04C22C1/03C22C27/025
Inventor 王志军刘强孙鑫刘志彬段善博纪海龙王东华
Owner CHENGDE TIANDA VANADIUM IND
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