CN111440977A - Method for preparing AlV55 alloy - Google Patents

Method for preparing AlV55 alloy Download PDF

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Publication number
CN111440977A
CN111440977A CN202010494132.XA CN202010494132A CN111440977A CN 111440977 A CN111440977 A CN 111440977A CN 202010494132 A CN202010494132 A CN 202010494132A CN 111440977 A CN111440977 A CN 111440977A
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percent
equal
purity
less
metal
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尹丹凤
陈海军
师启华
余彬
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Pangang Group Research Institute Co Ltd
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Pangang Group Research Institute Co Ltd
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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C27/00—Alloys based on rhenium or a refractory metal not mentioned in groups C22C14/00 or C22C16/00
    • C22C27/02—Alloys based on vanadium, niobium, or tantalum
    • C22C27/025—Alloys based on vanadium, niobium, or tantalum alloys based on vanadium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/02—Making non-ferrous alloys by melting

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

The invention belongs to the field of metallurgy, and particularly relates to a preparation method of an AlV55 alloy. The invention aims to solve the technical problem of providing a method for preparing AlV55 alloy, which comprises the following steps: metal Ca, metal Al, metal V2O5And V2O3Uniformly mixing, then initiating a metallothermic reduction reaction by using an igniter, then electrifying, heating, cooling and processing to obtain the AlV55 alloy. The method can improve the yield and the finished product rate of the AlV55 alloy.

Description

Method for preparing AlV55 alloy
Technical Field
The invention belongs to the field of metallurgy, and particularly relates to a preparation method capable of improving yield and rate of finished products of AlV55 alloy.
Background
Vanadium-aluminum alloy is used as an important additive of titanium alloy, can be used for improving the performance of titanium alloy, has more advantages in the aspects of strength, toughness, formability, corrosion resistance, high temperature resistance and the like, and is widely applied to the manufacture of seaplanes, gliders, automobile engine systems, automobile chassis parts, golf clubs, medical equipment and the like.
With the rapid development of aerospace industry in China, the titanium alloy applied to the aerospace field is greatly increased, wherein the maximum use amount of Ti-6Al-4V alloy is used. The Ti-6Al-4V alloy is mostly prepared from the AlV55 alloy in China, the market demand is very large, but the yield and the yield of the AlV55 alloy prepared by a one-step method are not high, and the production cost is always high.
Disclosure of Invention
The invention aims to solve the technical problem of providing a preparation method of AlV55 alloy, which can effectively solve the problems of low yield and low yield of AlV55 alloy prepared by a one-step method.
The method for preparing the AlV55 alloy comprises the following steps: metal Ca, metal Al, metal V2O5And V2O3Uniformly mixing, then initiating a metallothermic reduction reaction by using an igniter, then electrifying, heating, cooling and processing to obtain the AlV55 alloy.
Wherein, in the method for preparing the AlV55 alloy, metal Ca, metal Al and metal V2O5And V2O3The mass ratio is 1: 6.278-6.362: 6.33-6.64: 0.878-1.305.
Furthermore, in the method for preparing the AlV55 alloy, the purity of the metal Ca is more than or equal to 99.7 percent, wherein the purity of Fe is less than or equal to 0.01 percent, the purity of Si is less than or equal to 0.01 percent, and the purity of C is less than or equal to 0.01 percent.
Furthermore, in the method for preparing the AlV55 alloy, the purity of the metal Al is more than or equal to 99.7 percent, wherein the purity of Fe is less than or equal to 0.01 percent, the purity of Si is less than or equal to 0.01 percent, and the purity of C is less than or equal to 0.01 percent.
Further, in the above method for preparing AlV55 alloy, V is2O5The purity is more than or equal to 99.5 percent, wherein the Fe is less than or equal to 0.008 percent, the Si is less than or equal to 0.01 percent, and the C is less than or equal to 0.01 percent.
Further, in the above method for preparing AlV55 alloy, V is2O3The content of TV is more than or equal to 66.5 percent, wherein the content of Fe is less than or equal to 0.01 percent, the content of Si is less than or equal to 0.01 percent, and the content of C is less than or equal to 0.015 percent.
Furthermore, in the method for preparing the AlV55 alloy, the metal Ca has the granularity of 1-3 mm.
Furthermore, in the method for preparing the AlV55 alloy, the granularity of the metal Al is 1-3 mm.
Further, in the above method for preparing AlV55 alloy, V is2O5The particle size is 120-200 meshes.
Further, the above-mentioned method for preparing AlV55 alloyIn the method, the V2O3The particle size is 120-200 meshes.
In the method for preparing the AlV55 alloy, the ignition agent is a mixture of barium peroxide and aluminum powder in a weight ratio of 4-5: 1.
Specifically, in the method for preparing the AlV55 alloy, the time of the metallothermic reduction reaction is 2-3 min.
Specifically, in the method for preparing the AlV55 alloy, the time of the electric heating is 4-7 min.
Specifically, in the above method for preparing the AlV55 alloy, the cooling is air cooling. And the air cooling is to use common compressed air to accelerate the temperature reduction of the reaction equipment.
Specifically, in the method for preparing the AlV55 alloy, the cooling time is 2-3 h.
Specifically, in the method for preparing the AlV55 alloy, after cooling, the reaction equipment is opened for the treatment after the cooling is carried out for 25-28 h.
The method of the invention carries out improvement and optimization of the process on the basis of a one-step method, and improves the vanadium yield and the finished product ratio of the alloy product by changing the reducing agent and the raw materials and setting the step of electrifying and heating without adding a coolant under the condition of reasonably controlling the adding proportion of the raw materials; meanwhile, vacuum refining is not needed, so that the cost is lower than that of AlV55 alloy prepared by a two-step method. The method can obtain the AlV55 alloy with the vanadium yield of more than or equal to 97 percent and the finished product rate of more than or equal to 75 percent.
Detailed Description
The method for preparing the AlV55 alloy comprises the following steps: (1) mixing high-purity metal Ca, high-purity metal Al and high-purity metal V2O5And V2O3Loading into a charging bucket and uniformly mixing; (2) the evenly mixed raw materials are put into reaction equipment, and an igniter is used for initiating the raw materials to carry out metallothermic reduction reaction; (3) after the reaction is carried out for 2-3 min, inserting an electrode for electrifying and heating to ensure that the slag is in a molten state, so as to be beneficial to alloy precipitation in the slag; (4) lifting the electrode to stop heating, and air cooling for 2-3 h; (5) and opening the reactor after 24-28 h, and carrying out crushing, surface treatment, selection, detection and other treatment to obtain the AlV55 alloy with high yield and high yield.
Preferably, the high-purity metal Ca, the high-purity metal Al and the high-purity metal V are reasonably controlled in the step (1)2O5And V2O3The mass ratio is 1: 6.278-6.362: 6.33-6.64: 0.878-1.305, and the heat is properly released without adding a special coolant.
Further, in order to ensure that the AlV55 alloy meets the requirements of YS/T579-; the purity of the high-purity metal Al is more than or equal to 99.7 percent, wherein the purity of Fe is less than or equal to 0.01 percent, the purity of Si is less than or equal to 0.01 percent, and the purity of C is less than or equal to 0.01 percent; high purity V2O5The purity is more than or equal to 99.5 percent, wherein Fe is less than or equal to 0.008 percent, Si is less than or equal to 0.01 percent, and C is less than or equal to 0.01 percent; high purity V2O3The content of TV is more than or equal to 66.5 percent, wherein the content of Fe is less than or equal to 0.01 percent, the content of Si is less than or equal to 0.01 percent, and the content of C is less than or equal to 0.015 percent.
Further, in order to ensure that the raw materials are uniformly mixed and the reaction is fully carried out, the high-purity metal Ca in the step (1) has a granularity of 1-3 mm, the high-purity metal Al has a granularity of 1-3 mm and the high-purity metal V has a granularity of 1-3 mm2O5High purity V with particle size of 120-200 meshes2O3The particle size is 120-200 meshes.
Further, the ignition agent in the step (2) is a mixture of barium peroxide and aluminum powder in a weight ratio of 4-5: 1. Barium peroxide and aluminum powder are used as an ignition agent, the reaction heating is high, the reaction triggering speed is high, and the oxidation product does not pollute the alloy.
Furthermore, the purpose of the electrical heating in the step (3) is to make the slag in a molten liquid state, so as to be beneficial to the sedimentation of the alloy generated by the reaction. If the heating time is too short, alloy sedimentation in the slag is not facilitated, and if the heating time is too long, composition segregation of the alloy is easily caused. The time of the electric heating is preferably 4-7 min. The electrical heating can adopt graphite electrodes. No special requirements are required for current, voltage and the like, and the slag is only required to be in a molten state.
Further, in order to improve the yield of the alloy, the air cooling in the step (4) is to use common compressed air to accelerate the temperature reduction of the reaction equipment.
Example 1
High-purity metal Ca (purity)99.8% of Fe, 0.008% of Si, 0.005% of C, and 0.009% of C, with a particle size of 1-2 mm)40kg, 251.2kg of high-purity metal Al (with a purity of 99.7% of Fe, 0.009% of Si, and 0.01% of C, with a particle size of 1-2 mm), and high-purity V2O5(purity 99.6%, wherein Fe is 0.008%, Si is 0.008%, C is 0.008%, and particle size is 120-160 meshes) 254kg and high-purity V2O3(the content of TV is 66.8%, the content of Fe is 0.01%, the content of Si is 0.007%, the content of C is 0.01%, and the particle size is 120-160 meshes) 36kg of the barium peroxide and the aluminum powder are uniformly mixed in a charging bucket and then are loaded into reaction equipment, and an igniter is used for initiating a raw material to carry out a metallothermic reduction reaction, wherein the igniter is a mixture of the barium peroxide and the aluminum powder in a mass ratio of 4: 1. And after the reaction is carried out for 2min, inserting an electrode, electrifying and heating for 5min, lifting the electrode, stopping heating, carrying out air cooling on the reaction equipment for 2h by using common compressed air, opening the reactor after 25h, and obtaining the AlV55 alloy which meets the requirements of YS/T579-. The vanadium yield is the ratio of vanadium in the alloy cake to vanadium charged. The yield is the ratio of the completely qualified vanadium product to the vanadium input.
Example 2
50kg of high-purity metal Ca (the purity is 99.7 percent, wherein the Fe content is 0.009 percent, the Si content is 0.006 percent, the C content is 0.009 percent, and the granularity is 2-3 mm), 316kg of high-purity metal Al (the purity is 99.8 percent, wherein the Fe content is 0.008 percent, the Si content is 0.008 percent, the C content is 0.009 percent, and the granularity is 1-2 mm), and high-purity V2O5(purity: 99.5%, wherein Fe is 0.01%, Si is 0.009%, C is 0.01%, particle size is 160-200 mesh) 325kg and high purity V2O3(67% of TV, 0.008% of Fe, 0.007% of Si and 0.009% of C, and the particle size is 120-160 meshes) is uniformly mixed in a charging bucket and then is loaded into a reaction device, and the raw materials are initiated by an igniter to carry out metallothermic reduction reaction, wherein the igniter adopts a mixture of barium peroxide and aluminum powder with the mass ratio of 5: 1. And after the reaction is carried out for 2.5min, inserting an electrode, electrifying, heating for 7min, lifting the electrode, stopping heating, carrying out air cooling on the reaction equipment for 3h by using common compressed air, opening the reactor after 26h, and treating to obtain the AlV55 alloy which meets the requirements of YS/T579-.
Example 3
60kg of high-purity metal Ca (the purity is 99.8 percent, wherein the Fe content is 0.008 percent, the Si content is 0.005 percent, the C content is 0.008 percent, and the granularity is 1-2 mm), 381kg of high-purity metal Al (the purity is 99.7 percent, wherein the Fe content is 0.010 percent, the Si content is 0.009 percent, the C content is 0.008 percent, and the granularity is 2-3 mm), and high-purity V2O5396kg of (purity 99.7%, wherein Fe is 0.006%, Si is 0.005%, C is 0.007%, particle size is 120-160 meshes) and high-purity V2O3(67.2% of TV, 0.009% of Fe, 0.005% of Si and 0.008% of C, and the particle size is 160-200 meshes) 72kg of the barium sulfate and the aluminum powder are uniformly mixed in a charging bucket and then are put into a reaction device, and the ignition agent is used for initiating the raw materials to carry out metallothermic reduction reaction and adopts the mixture of the barium peroxide and the aluminum powder with the mass ratio of 4.5: 1. And after the reaction is carried out for 3min, inserting an electrode, electrifying and heating for 4min, lifting the electrode, stopping heating, carrying out air cooling on the reaction equipment for 2.5h by using common compressed air, opening the reactor after 28h, and obtaining the AlV55 alloy which meets the requirements of YS/T579-.

Claims (10)

1. A method of making an AlV55 alloy, characterized in that: the method comprises the following steps: metal Ca, metal Al, metal V2O5And V2O3Uniformly mixing, then initiating a metallothermic reduction reaction by using an igniter, then electrifying, heating, cooling and processing to obtain the AlV55 alloy.
2. The method of making an AlV55 alloy according to claim 1, wherein: metal Ca, metal Al, V2O5And V2O3The mass ratio is 1: 6.278-6.362: 6.33-6.64: 0.878-1.305.
3. The method of making AlV55 alloy according to claim 1 or 2, wherein: the purity of the metal Ca is more than or equal to 99.7 percent, wherein the purity of Fe is less than or equal to 0.01 percent, the purity of Si is less than or equal to 0.01 percent, and the purity of C is less than or equal to 0.01 percent; the purity of the metal Al is more than or equal to 99.7 percent, wherein the purity of Fe is less than or equal to 0.01 percent, the purity of Si is less than or equal to 0.01 percent, and the purity of C is less than or equal to 0.01 percent; the V is2O5The purity is more than or equal to 99.5 percent, wherein Fe is less than or equal to 0.008 percent, Si is less than or equal to 0.01 percent, and C is less than or equal to 0.01 percent; the V is2O3The content of TV is more than or equal to 66.5 percent, wherein the content of Fe is less than or equal to 0.01 percent, the content of Si is less than or equal to 0.01 percent, and the content of C is less than or equal to 0.015 percent.
4. The method of any of claims 1-3, wherein the AlV55 alloy comprises: the granularity of the metal Ca is 1-3 mm; the granularity of the metal Al is 1-3 mm; the V is2O5The granularity is 120-200 meshes; the V is2O3The particle size is 120-200 meshes.
5. The method of any of claims 1-4 for preparing an AlV55 alloy, wherein: the ignition agent is a mixture of barium peroxide and aluminum powder in a weight ratio of 4-5: 1.
6. The method of any of claims 1-5, wherein the AlV55 alloy comprises: the time of the metallothermic reduction reaction is 2-3 min.
7. The method of any of claims 1-6, wherein the AlV55 alloy comprises: and the time of the power-on heating is 4-7 min.
8. The method of any of claims 1-7, wherein the AlV55 alloy comprises: the cooling is air cooling; further, the air cooling is to cool the reaction equipment by using common compressed air.
9. The method of any of claims 1-8, wherein the AlV55 alloy comprises: the cooling time is 2-3 h.
10. The method of any of claims 1-9 for making an AlV55 alloy, wherein: and after cooling, placing for 25-28 h, and opening the reaction equipment for treatment.
CN202010494132.XA 2020-06-03 2020-06-03 Method for preparing AlV55 alloy Pending CN111440977A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112779447A (en) * 2020-12-16 2021-05-11 河钢承德钒钛新材料有限公司 Method for preparing vanadium-aluminum alloy by using vanadium trioxide

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Cited By (1)

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Publication number Priority date Publication date Assignee Title
CN112779447A (en) * 2020-12-16 2021-05-11 河钢承德钒钛新材料有限公司 Method for preparing vanadium-aluminum alloy by using vanadium trioxide

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