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Fabrication method for preparing vanadium-aluminum alloy based on aluminothermic reduction

A technology of vanadium-aluminum alloy and cloth, which is applied in the field of preparation of vanadium-aluminum alloy based on aluminothermic reduction, which can solve the problems of alloy cake segregation, alloy cake height, and insufficient up-and-down convection of the melt, so as to increase the yield of qualified products and reduce the up-and-down segregation The effect of small size and sufficient melt flow

Active Publication Date: 2021-12-21
PANGANG GROUP RESEARCH INSTITUTE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although vanadium-aluminum alloy is an infinite miscible solid solution, the density of aluminum is lower than that of vanadium, and the molten aluminum is difficult to sink into the bottom of the furnace, and the vanadium produced by the reaction at the bottom of the furnace is not easy to float up, and the upper and lower convection of the melt in the reaction furnace is insufficient. , resulting in higher aluminum content in the upper part of the alloy cake and higher vanadium content in the lower part, which in turn makes the alloy cake segregate seriously. Generally, the upper and lower segregation of the alloy cake reaches about 3.5%.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Treating ALV55 is a target, and ni4: 0.3: 0.3: 0.95 is weighed by mass ratio of 2: 1: 0.3: 0.95, the ni45moxide, and the coolant is mixed with metal aluminum B. According to the metal aluminum A, the metal aluminum A is laid in the bottom of the reaction furnace, and the mixture is stored, and the mixture is used to supply the mixture, and the reaction residue is retracted after cooling. The vanadium content of the vanadium aluminum alloy was detected was 55.2%, and the lower vanadium content was 57.9%, and the upper and lower deviation was 2.7%.

Embodiment 2

[0027] Treatment with ALV55 is 2: 0.8: 0.3: 1.15 is weighed in mass ratio of 2: 0.8: 0.3: 1.15, a mixture of two vanadium aluminum B, coolant, and metal aluminum A, and the coolant is mixed with metal aluminum B. The metal aluminum A is paved in the bottom of the reaction furnace, and the mixture is placed, and the magnesium powder is used to ignite the upper layer furnace, waiting for the reaction to end, and then remove the upper reaction residue to obtain a target vanadium aluminum alloy. The vanadium content of the vanadium aluminum alloy was detected was 55.5%, and the lower vanadium content was 57.9%, and the upper and lower deviation was 2.4%.

Embodiment 3

[0029] Target the preparation of Alv85, the mass ratio of 2: 1: 0.3: 0.23 is weighed, and two vanadium aluminum B, coolant and metal aluminum A, pentoxide, coolant, and metal aluminum B mixed 20 min. Mix According to the metal aluminum A, the metal aluminum A is laid in the bottom of the reaction furnace, and the mixture is stored, and the mixture is used to supply the mixture, and the reaction residue is retracted after cooling. The vanadium content of the vanadium aluminum alloy was detected was 84.8%, and the lower vanadium content was 86.6%, and the upper and lower deviation was 1.8%.

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Abstract

The invention belongs to the technical field of production of vanadium-based alloys, and in particular relates to a material distribution method for preparing vanadium-aluminum alloys based on aluminothermic reduction. The technical problem to be solved by the present invention is to provide a material distribution method for preparing vanadium-aluminum alloy based on aluminothermic reduction, so as to reduce the segregation of the upper and lower layers of the vanadium-aluminum alloy cake and increase the yield of qualified products. The method is: first spread metal aluminum A on the bottom of the reaction furnace, then mix vanadium pentoxide, coolant and metal aluminum B evenly, spread it on metal aluminum A, ignite and react, cool after the end, and remove the slag to obtain vanadium aluminum alloy. The method of the invention can reduce the upper and lower segregation of the vanadium-aluminum alloy cake, increase the yield of qualified products, has simple and convenient technology, and has broad application prospects.

Description

Technical field [0001] The present invention belongs to the technical field of vanadium-based alloy production, and more particularly to a fabric method for preparing vanadium aluminum alloys based on aluminum heat reduction. Background technique [0002] The aerospace sector is used to prepare aircraft skeleton and the Ti-6Al-4V and Ti-8Al-1Mo-1V of Ti-6Al-4V and Ti-8Al-1Mo-1V in the titanium alloy of aircraft skeleton and the engine account for about half of the titanium alloy market. Vanadium in titanium alloys is added in the form of vanadium aluminum alloys, and my country mainly prepared Ti-6Al-4V using vanadium aluminum alloys. Vanadium aluminum alloy and metal titanium melting prepared a vanadium titanium alloy, and the quality of its quality directly affects the performance of titanium alloy with aerospace. In order to achieve the best performance of the desired aerospace, aviation industrial titanium alloys, one of the key is a vanadium aluminum intermediate alloy with ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/02C22C27/02
CPCC22C1/02C22C27/025
Inventor 高雷章陈海军尹丹凤师启华
Owner PANGANG GROUP RESEARCH INSTITUTE CO LTD