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Aluminium-vanadium-carbon interalloy and preparation method thereof

A master alloy, aluminum vanadium technology, applied in the field of aluminum vanadium carbon master alloy and its preparation, can solve the problems of TiC inclusion metallurgical defects, affecting the quality of titanium alloy, difficult to control components, etc., to achieve uniform distribution of carbon elements, and ensure the quality of titanium products. , effects that address additive and uniformity issues

Inactive Publication Date: 2009-11-04
BAOJI TITANIUM IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the problems of easy loss of carbon powder, difficult control of components, poor uniformity, and extremely easy generation of carbon and its compound TiC inclusion metallurgical defects in this process, it seriously affects the quality of titanium alloys. In addition, this production process causes relatively large pollution, so Carbon-containing master alloys need to be developed to provide titanium production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Step 1: Dry pure aluminum, vanadium pentoxide, calcium fluoride, carbon powder with a particle size of -100 mesh, and a reaction crucible at a drying temperature of 70-80°C for more than 24 hours;

[0021] Step 2: Weigh the powdery raw materials dried in the above steps, and the weight composition of ingredients: 16kg of pure aluminum, 15.3kg of vanadium pentoxide, 8.55kg of calcium fluoride, 31g of carbon powder, and fully mix all kinds of raw materials;

[0022] Step 3: Put the mixed raw materials into the reaction crucible, insert magnesium chips and ignite with an open flame to react;

[0023] Step 4: After the above reaction is completed, cool for more than 6 hours and take out of the oven.

[0024] After strict process control such as grinding, crushing, sieving, magnetic separation, and selection, as well as chemical composition analysis, particle size, surface quality, high specific gravity inspection, etc., excellent aluminum vanadium carbon intermediates that ...

Embodiment 2

[0026] Step 1: Dry pure aluminum, vanadium pentoxide, calcium fluoride, carbon powder with a particle size of -100 mesh, and a reaction crucible at a drying temperature of 70-80°C for more than 24 hours;

[0027] Step 2: Weigh the powdered raw materials dried in the above steps, and the weight composition of ingredients is: 10kg of pure aluminum, 9.5kg of vanadium pentoxide, 5.5kg of calcium fluoride, 3g of carbon powder, and fully mix all kinds of raw materials;

[0028] Step 3: Put the mixed raw materials into the reaction crucible and ignite with an open flame to react;

[0029] Step 4: After the above reaction is completed, cool for more than 6 hours and take out of the oven.

[0030] The results of chemical analysis are: 49.5% aluminum-50.3% vanadium-0.06% carbon.

Embodiment 3

[0032] Step 1: Dry pure aluminum, vanadium pentoxide, calcium fluoride, carbon powder with a particle size of -140 mesh, and a reaction crucible at a drying temperature of 70-80°C and a drying time of more than 24 hours;

[0033] Step 2: Weigh the powdery raw materials dried in the above steps, and the weight composition of ingredients is: 12kg of pure aluminum, 11.2kg of vanadium pentoxide, 5kg of calcium fluoride, 250g of carbon powder, and fully mix all kinds of raw materials;

[0034] Step 3: Put the mixed raw materials into the reaction crucible, insert magnesium chips and ignite with an open flame to react;

[0035] Step 4: After the above reaction is completed, cool for more than 6 hours and take out of the oven.

[0036] The results of chemical analysis are: 17.9% aluminum-82% vanadium-0.33% carbon.

[0037] Using the aluminum-vanadium-carbon master alloy of the above embodiment, adding titanium alloy ingots for production of carbon elements, can accurately control th...

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Abstract

The invention relates to an aluminium-vanadium-carbon interalloy and a preparation method thereof. On the basis of producing an aluminium-vanadium interalloy in the prior aluminothermic method of reducing, the prior equipment and smelting process are utilized, and the good-quality aluminium-vanadium-carbon interalloy can be produced by only adding a certain amount of carbon powder. Through detection, the interalloy has uniform compositions without defects such as inclusions and the like, is added into a titanium ingot to make carbon element added in a carbon-containing interalloy mode, eliminates the quality hidden troubles of pollution and inclusions caused by directly using the carbon powder in a titanium ingot primary smelting process, can effectively improve the uniformity and accurate control of the carbon element in a titanium material, and solves the problems of addition and uniformity of the carbon element; and the produced titanium ingot has even distribution of the carbon element, has no metallurgical defects such as the inclusions and the like, and can meet the quality requirement on a high-quality titanium material in the fields such as aerospace and the like. The preparation method has the obvious advantages of simple process, simple and convenient operation, low cost, accurate composition control, stability and the like, and is suitable for industrial production.

Description

technical field [0001] The invention relates to an aluminum-vanadium-carbon master alloy and a preparation method thereof. On the basis of the existing aluminothermic reduction method for producing the aluminum-vanadium master alloy, the original equipment and smelting process are used, and only a certain amount of carbon powder is added to produce good quality. aluminum vanadium carbon master alloy. Background technique [0002] For a long time, people have regarded carbon as a harmful impurity element in titanium alloys, because when the content in titanium products is greater than 0.2%, it will form very hard carbides, reduce the impact toughness of the material, and even cause inclusion metallurgical defects in severe cases. Therefore, its content is generally reduced as much as possible. The corresponding domestic and foreign standards for titanium products, titanium sponge and alloy additives for titanium alloys (such as GB / T3620.1 "Titanium and Titanium Alloy Grades a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/00C22C27/02C22C30/00C22C1/05C22C1/10
Inventor 李献军陈峰尹淑霞陈战乾李艳红董艳妮乔璐何育兴冯军宁庆达嘎
Owner BAOJI TITANIUM IND CO LTD
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