阅读说明：本技术 钒钼铬铁铝合金的生产方法 (Production method of vanadium-molybdenum-chromium-iron aluminum alloy ) 是由 王永钢 赵小平 刘亮亮 陈海军 王英 张宣武 于 2020-11-30 设计创作，主要内容包括：本发明涉及钒钼铬铁铝合金及其生产方法,属于特种合金生产技术领域。本发明提供了钒钼铬铁铝合金的生产方法,包括如下步骤：a、配料：取品位≥99.0％的V-2O-5、MoO-3、Cr-2O-3、铝粉以及铁粉,与造渣剂一起混匀,其中,V-2O-5粒度≤1mm,MoO-3粒度≤1mm,Cr-2O-3粒度≤1mm,铝粉粒度≤2mm,铁粉粒度≤2mm；b、冶炼：将步骤a配制好的炉料加入冶炼炉内,点火冶炼,生成熔渣和合金液；c、冷却拆炉：炉体冷却后,拆开炉体,分离合金和炉渣,即得钒钼铬铁铝合金。本发明提供了一种一步法制备钒钼铬铁铝合金的方法,有助于降低航空航天领域用钛合金的生产成本。(The invention relates to a vanadium-molybdenum-chromium-iron aluminum alloy and a production method thereof, belonging to the technical field of special alloy production. The invention provides a production method of vanadium-molybdenum-chromium-iron aluminum alloy, which comprises the following steps: a. preparing materials: taking V with grade not less than 99.0% 2 O 5 、MoO 3 、Cr 2 O 3 Aluminum powder and iron powder are mixed with slag former, wherein, V 2 O 5 Particle size of 1mm or less, MoO 3 Grain size less than or equal to 1mm, Cr 2 O 3 The granularity is less than or equal to 1mm, the granularity of the aluminum powder is less than or equal to 2mm, and the granularity of the iron powder is less than or equal to 2 mm; b. smelting: b, adding the furnace burden prepared in the step a into a smelting furnace, igniting and smelting to generate molten slag and alloy liquid; c. cooling and dismantling the furnace: and after the furnace body is cooled, disassembling the furnace body, and separating the alloy and the furnace slag to obtain the vanadium-molybdenum-chromium-iron-aluminum alloy. The invention provides a method for preparing vanadium-molybdenum-chromium-iron aluminum alloy by a one-step method, which is beneficial to reducing the production cost of titanium alloy used in the field of aerospace.)

1. The production method of the vanadium-molybdenum-chromium-iron aluminum alloy is characterized by comprising the following steps: the method comprises the following steps:

a. preparing materials: taking V with grade not less than 99.0%₂O₅、MoO₃、Cr₂O₃Aluminum powder and iron powder are mixed with slag former, wherein, V₂O₅Particle size of 1mm or less, MoO₃Grain size less than or equal to 1mm, Cr₂O₃The granularity is less than or equal to 1mm, the granularity of the aluminum powder is less than or equal to 2mm, and the granularity of the iron powder is less than or equal to 2 mm; the weight ratio of each raw material is as follows: v₂O₅800-1000 parts of MoO₃720-900 parts of Cr₂O₃160-200 parts of aluminum powder 770-1150 parts of iron powder 80-100 parts of iron powder;

b. smelting: b, adding the furnace burden prepared in the step a into a smelting furnace, igniting and smelting to generate molten slag and alloy liquid; the smelting furnace body of the smelting furnace is divided into four layers from outside to inside, namely a steel shell, a corundum permanent layer, a working layer outer layer and a working layer inner layer in sequence, wherein the corundum slag generated by smelting of vanadium-aluminum alloy with the granularity of less than or equal to 10mm is filled in the working layer outer layer, and white corundum powder with the granularity of less than 1mm and the purity of more than 99.0% is filled in the working layer inner layer;

c. cooling and dismantling the furnace: and after the furnace body is cooled, disassembling the furnace body, and separating the alloy and the furnace slag to obtain the vanadium-molybdenum-chromium-iron-aluminum alloy.

2. The method of claim 1, wherein: the weight part of the slagging agent in the step a is 120-150 parts.

3. The production process according to claim 1 or 2, characterized in that: the slagging agent in the step a is lime.

4. The method of claim 1, wherein: at least one of the following is satisfied: the thickness of the corundum permanent layer is 100-150 mm; the thickness of the outer layer of the working layer is 50-80 mm; the thickness of the inner layer of the working layer is 50-70 mm.

5. The method of claim 1, wherein: the conditions of the ignition smelting in the step b are as follows: harrowing the furnace burden, paving the ignition material on the upper surface, and paving the area with the diameter of the ignition material spreading area not less than 400 mm.

6. The method of claim 1, wherein: and c, cooling to the temperature in the furnace of less than 50 ℃, and disassembling the furnace body.

7. The method of claim 6, wherein: the furnace body is cooled by air cooling and/or water cooling.

8. The production method as set forth in any one of claims 1 to 7, characterized in that: also comprises the following steps: and (3) finishing the vanadium-molybdenum-chromium-iron aluminum alloy obtained after separating the furnace slag to remove the crystallization defect part, then removing the surface oxidation film by sand blasting, crushing, screening, and removing the alloy particles with the residual oxidation film by sorting to obtain the finished product.

9. The vanadium-molybdenum-chromium-iron aluminum alloy obtained by the production method according to any one of claims 1 to 8.

10. The vanadium molybdenum ferrochromium alloy according to claim 9, wherein: the chemical components by mass percent are as follows: 30-35% of V, 30-35% of Mo, 5-8% of Cr, 5-8% of Fe, less than or equal to 0.30% of Si, less than or equal to 0.01% of C, less than or equal to 0.03% of O, less than or equal to 0.08% of N, less than or equal to 0.15% of Cu, less than or equal to 0.05% of Mn and the balance of Al.

Technical Field

The invention relates to a method for producing vanadium-molybdenum-chromium-iron aluminum alloy, belonging to the technical field of special alloy production.

Background

The titanium alloy is an alloy formed by adding other elements on the basis of titanium, has excellent properties such as high strength, low density, good high-temperature performance and the like, and is widely applied to the fields of aerospace, war industry and the like. The alloy elements required to be added in the preparation of the titanium alloy material mainly comprise aluminum, vanadium, molybdenum, chromium, iron and the like. Wherein, aluminum is the main alloy element of the titanium alloy, and has obvious effects of improving the normal temperature and high temperature strength of the alloy, reducing the specific gravity and increasing the elastic modulus; the most widely used molybdenum and vanadium can improve the room temperature and high temperature strength of the titanium alloy, increase the hardenability and improve the thermal stability of the titanium alloy containing chromium and iron. For example, high strength titanium alloy structural materials such as TC18, etc. applied in the aerospace field, require additional elements such as aluminum, vanadium, molybdenum, chromium, iron, etc. At present, the titanium alloys are smelted mainly by adding vanadium-aluminum, molybdenum-aluminum, chromium, aluminum-iron and other raw materials into sponge titanium and smelting in a vacuum furnace, a plurality of alloy elements are added during smelting and proportioning, and the differences of the melting points, densities and other physical and chemical properties of a plurality of alloys are large, so that the difficulty in controlling smelting components is large. If the five alloy elements of vanadium, molybdenum, chromium, iron and aluminum are smelted according to the required component proportion to obtain a multi-element alloy, the multi-element alloy can be added at one time in the smelting process of the titanium alloy, so that the components of the titanium alloy obtained by smelting are more stable and uniform, the component control difficulty is small, and the smelting quality of the titanium alloy is favorably improved.

However, in the prior art, the vanadium-molybdenum-chromium-iron-aluminum intermediate alloy is mostly smelted by a one-step method, and the smelted alloy not only has high impurity content, but also has poor uniformity and large component fluctuation, and is not beneficial to the quality control of the titanium alloy material. In order to solve the problem, CN102618739A provides a method for smelting Al-Mo-V-Cr-Fe intermediate alloy by a two-step method, and the key point of the method is that Al, Fe and Cr are added twice for smelting, so that the uniformity of the components is better than that of the existing process. In addition, a unique smelting method that a carbon crucible coated with a layer of yttrium oxide is used as a smelting container in a vacuum furnace is adopted, so that the introduction of impurities can be well controlled. However, the above-mentioned preparation process significantly increases the complexity of the production operation, and the use of a carbon crucible coated with yttria as a smelting vessel is not favorable for controlling the production cost. Therefore, the preparation method of the aluminum molybdenum vanadium chromium iron alloy still needs to be further improved so as to simplify the operation and reduce the production cost.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention aims to provide a method for producing vanadium-molybdenum-chromium-iron aluminum alloy.

The invention provides a production method of vanadium-molybdenum-chromium-iron aluminum alloy, which comprises the following steps:

a. preparing materials: taking V with grade not less than 99.0%₂O₅、MoO₃、Cr₂O₃Aluminum powder and iron powder are mixed with slag former, wherein, V₂O₅Particle size of 1mm or less, MoO₃Grain size less than or equal to 1mm, Cr₂O₃The granularity is less than or equal to 1mm, the granularity of the aluminum powder is less than or equal to 2mm, and the granularity of the iron powder is less than or equal to 2 mm; the weight ratio of each raw material is as follows: v₂O₅800-1000 parts of MoO₃720-900 parts of Cr₂O₃160-200 parts of aluminum powder 770-1150 parts of iron powder 80-100 parts of iron powder;

b. smelting: b, adding the furnace burden prepared in the step a into a smelting furnace, igniting and smelting to generate molten slag and alloy liquid; the smelting furnace body of the smelting furnace is divided into four layers from outside to inside, namely a steel shell, a corundum permanent layer, a working layer outer layer and a working layer inner layer in sequence, wherein the corundum slag generated by smelting of vanadium-aluminum alloy with the granularity of less than or equal to 10mm is filled in the working layer outer layer, and white corundum powder with the granularity of less than 1mm and the purity of more than 99.0% is filled in the working layer inner layer;

c. cooling and dismantling the furnace: and after the furnace body is cooled, disassembling the furnace body, and separating the alloy and the furnace slag to obtain the vanadium-molybdenum-chromium-iron-aluminum alloy.

The purpose of adopting the raw materials with smaller particle size in the step a is to ensure that the burden is accurate in proportioning and uniform in mixing, the reaction can be carried out stably and rapidly, and the reaction completion degree is 100 percent, so that the alloy with stable components and extremely small fluctuation is obtained.

Wherein, in step a, the mixing is sufficient for >8 min.

The working layer of the smelting furnace body is fixed by a die rolled by an aluminum foil and is placed on a jolt ramming table for more than 20min, so that the working layer is compact and compact, and the residual air of the working layer is reduced as much as possible.

And b, rapidly sintering the inner surface of the working layer into a compact thin layer by high temperature generated by smelting reaction in the step b. The slag and the alloy liquid generated by smelting are separated in the hearth, the alloy liquid is deposited at the bottom in the furnace body, and the slag is gathered on the alloy. The alloy liquid is wrapped and protected by a furnace lining material formed by sintering and slag produced by smelting, and the oxidation pollution of outside air to the alloy is avoided.

Further, the weight part of the slagging agent in the step a is 120-150 parts.

Further, the slag former in the step a is lime.

Further, the thickness of the corundum permanent layer is 100-150 mm.

Further, the thickness of the outer layer of the working layer is 50-80 mm.

Further, the thickness of the inner layer of the working layer is 50-70 mm.

Further, the conditions of the ignition smelting in the step b are as follows: harrowing the furnace burden, paving the ignition material on the upper surface, and paving the area with the diameter of the ignition material spreading area not less than 400 mm. The spreading area of the ignition material is required to be in an area with a diameter not less than 400mm, so that the furnace burden can be quickly and fully reacted.

Further, cooling to the temperature in the furnace of less than 50 ℃ in the step c, and disassembling the furnace body.

Further, the furnace body is cooled by air cooling and/or water cooling. In order to accelerate the cooling speed of the alloy and slag in the furnace body, the furnace body can be forced to be air-cooled and water-cooled.

Further, the production method also comprises the following steps: and (3) finishing the vanadium-molybdenum-chromium-iron aluminum alloy obtained after separating the furnace slag to remove the crystallization defect part, then removing the surface oxidation film by sand blasting, crushing, screening, and removing the alloy particles with the residual oxidation film by sorting to obtain the finished product.

The invention provides a vanadium-molybdenum-chromium-iron-aluminum alloy obtained by the production method.

Further, the vanadium-molybdenum-chromium-iron aluminum alloy comprises the following chemical components in percentage by mass: 30-35% of V, 30-35% of Mo, 5-8% of Cr, 5-8% of Fe, less than or equal to 0.30% of Si, less than or equal to 0.01% of C, less than or equal to 0.03% of O, less than or equal to 0.08% of N, less than or equal to 0.15% of Cu, less than or equal to 0.05% of Mn and the balance of Al.

The invention provides a method for preparing vanadium-molybdenum-chromium-iron aluminum alloy by a one-step method, wherein the main components of the obtained vanadium-molybdenum-chromium-iron aluminum alloy are approximately in the following ranges: 30-35% of V, 30-35% of Mo, 5-8% of Cr, 5-8% of Fe, less than or equal to 0.30% of Si, less than or equal to 0.01% of C, less than or equal to 0.03% of O, less than or equal to 0.08% of N, less than or equal to 0.15% of Cu, less than or equal to 0.05% of Mn and the balance of Al. By adopting the production method, the alloy product has small component fluctuation, reasonable component proportion, good alloy uniformity, high stability and low impurity content; and the process is simple and easy to control. The method has short process flow, low loss of valuable metal in the process and low energy consumption, so the corresponding cost is low. In addition, the vanadium-molybdenum-chromium-iron aluminum alloy obtained by the invention can be used as a multi-element alloy additive for titanium alloy production in the field of aerospace, provides various alloying elements such as vanadium, molybdenum, chromium, iron, aluminum and the like for titanium alloy smelting at one time, and has the advantages of convenient application, easy control of smelting components and high alloy yield. The application of the production method is beneficial to reducing the production cost of the titanium alloy in the aerospace field, and has a positive promotion effect on the development of the titanium alloy industry in the aerospace field.

Drawings

FIG. 1 is a flow chart of a production process of a vanadium-aluminum alloy in an embodiment;

FIG. 2 is a schematic structural view of a smelting furnace body in the embodiment.

Detailed Description

The scheme of the invention will be explained with reference to the examples. It will be appreciated by those skilled in the art that the following examples are illustrative of the invention only and should not be taken as limiting the scope of the invention. The examples, where specific techniques or conditions are not indicated, are to be construed according to the techniques or conditions described in the literature in the art or according to the product specifications. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products commercially available.

Example 1 production of a vanadium molybdenum chromium iron aluminum alloy by the method of the invention

(1) Taking the powder V₂O₅(purity 99%, granularity less than or equal to 1mm)800kg and MoO₃(purity is 99.2 percent, granularity is less than or equal to 1mm)720kg of Cr and₂O₃160kg (purity is 99.1 percent, granularity is less than or equal to 1mm), 80kg of iron powder (purity is 99.2 percent, granularity is less than or equal to 2mm) and 960kg of aluminum powder (purity is 99 percent, granularity is less than or equal to 2mm) for metallurgy, 120kg of lime is adopted as slagging agent, and the materials are fully mixed by a mixer after being accurately mixed>8min。

(2) A smelting furnace body is manufactured according to the requirements of figure 2. The smelting furnace body is a steel combined type shell, and a 100-plus-150 mm corundum permanent layer is poured or built in the smelting furnace body; 100-150mm of working layer is filled in the permanent layer, the working layer consists of two layers, the outer layer is 50-80mm, and the crushed vanadium-aluminum alloy smelting corundum slag powder is less than or equal to 10 mm; the inner working layer of the part contacting with the alloy adopts white corundum powder with the purity of more than 99.0 percent and less than 1 mm. Keeping the refractory materials of the permanent layer and the working layer of the furnace body dried. The working layer is fixed by a die rolled by aluminum foil and is placed on a jolt ramming table to be jolted for more than 20min, so that the working layer is compact and compact, and the residual air in the working layer is reduced as much as possible.

(3) The prepared furnace burden is put into a smelting furnace, the furnace burden is raked flat, ignition material is laid on the upper surface, the area of the tiled ignition material is required to be an area with the diameter not less than 400mm, and the ignition material is conveyed into a smelting reaction chamber for ignition smelting. After ignition, the charge reacts rapidly and violently, and all the charges react within 60 seconds. Standing, naturally cooling for 48 hours, taking the temperature in the furnace below 50 ℃, disassembling the furnace body, and separating the alloy and the furnace slag to obtain 1350kg of vanadium-molybdenum-chromium-iron-aluminum alloy which is complete in crystallization, bright, free of air holes, free of slag inclusion and easy to break.

(4) Finishing the alloy to remove the crystallization defect part, then blasting sand to remove the surface oxidation film, crushing, screening, manually sorting, removing the alloy particles with the residual oxidation film, and finally vacuumizing and filling argon for packaging to obtain the vanadium-molybdenum-chromium-iron-aluminum alloy finished product.

(5) Sampling and testing the components of the vanadium-molybdenum-chromium-iron aluminum alloy, mainly comprising: 33.5% of V, 33.2% of Mo, 18.5% of Al, 6.5% of Cr, 6.6% of Fe, 0.10% of Si, 0.008% of C, 0.026% of O, 0.06% of N, 0.01% of Cu, and 0.01% of Mn.

Example 2 production of vanadium molybdenum chromium iron aluminum alloy by the method of the invention

(1) Taking the powder V₂O₅(purity 99.1%, granularity less than or equal to 1mm)1000kg, MoO₃(purity is 99.2 percent, granularity is less than or equal to 1mm)900kg of Cr and Cr₂O₃200kg (purity is 99.2 percent, granularity is less than or equal to 1mm), 100kg of iron powder (purity is 99.3 percent, granularity is less than or equal to 2mm) and 960kg of aluminum powder (purity is 99 percent, granularity is less than or equal to 2mm) for metallurgy, 150kg of lime is adopted as slagging agent, and the materials are fully mixed by a mixer after being accurately mixed>8min。

(2) A smelting furnace body is manufactured according to the requirements of figure 2. The smelting furnace body is a steel combined type shell, and a 100-plus-150 mm corundum permanent layer is poured or built in the smelting furnace body; 100-150mm of working layer is filled in the permanent layer, the working layer consists of two layers, the outer layer is 50-80mm, and the crushed vanadium-aluminum alloy smelting corundum slag powder is less than or equal to 10 mm; the inner working layer of the part contacting with the alloy adopts white corundum powder with the purity of more than 99.0 percent and less than 1 mm. Keeping the refractory materials of the permanent layer and the working layer of the furnace body dried. The working layer is fixed by a die rolled by aluminum foil and is placed on a jolt ramming table to be jolted for more than 20min, so that the working layer is compact and compact, and the residual air in the working layer is reduced as much as possible.

(3) The prepared furnace burden is put into a smelting furnace, the furnace burden is raked flat, ignition material is laid on the upper surface, the area of the tiled ignition material is required to be an area with the diameter not less than 400mm, and the ignition material is conveyed into a smelting reaction chamber for ignition smelting. After ignition, the charge reacts rapidly and violently, and all the charges react within 60 seconds. Standing, naturally cooling for 48 hours, taking the temperature in the furnace below 50 ℃, disassembling the furnace body, and separating the alloy and the furnace slag to obtain 1761kg of vanadium-molybdenum-chromium-iron-aluminum alloy which is complete in crystallization, bright, free of air holes, free of slag inclusion and easy to break.

(4) Finishing the alloy to remove the crystallization defect part, then blasting sand to remove the surface oxidation film, crushing, screening, manually sorting, removing the alloy particles with the residual oxidation film, and finally vacuumizing and filling argon for packaging to obtain the vanadium-molybdenum-chromium-iron-aluminum alloy finished product.

(5) Sampling and testing the components of the vanadium-molybdenum-chromium-iron aluminum alloy, mainly comprising: 34.0% for V, 33.5% for Mo, 18.0% for Al, 6.8% for Cr, 6.9% for Fe, 0.11% for Si, 0.006% for C, 0.022% for O, 0.06% for N, 0.02% for Cu, and 0.01% for Mn.

Comparative example 1

(1) Taking the powder V₂O₅(purity 99.1%, granularity less than or equal to 1mm)1100kg, MoO₃(purity is 99.2 percent, granularity is less than or equal to 1mm)800kg of Cr and₂O₃200kg (purity is 99.2 percent, granularity is less than or equal to 1mm), 110kg of iron powder (purity is 99.3 percent, granularity is less than or equal to 2mm) and 960kg of aluminum powder (purity is 99 percent, granularity is less than or equal to 2mm) for metallurgy, 150kg of lime is adopted as slagging agent, and the materials are fully mixed by a mixer after being accurately mixed>8min。

(2) A smelting furnace body is manufactured according to the requirements of figure 2. The smelting furnace body is a steel combined type shell, and a 100-plus-150 mm corundum permanent layer is poured or built in the smelting furnace body; 100-150mm of working layer is filled in the permanent layer, the working layer consists of two layers, the outer layer is 50-80mm, and the crushed vanadium-aluminum alloy smelting corundum slag powder is less than or equal to 10 mm; the inner working layer of the part contacting with the alloy adopts white corundum powder with the purity of more than 99.0 percent and less than 1 mm. Keeping the refractory materials of the permanent layer and the working layer of the furnace body dried. The working layer is fixed by a die rolled by aluminum foil and is placed on a jolt ramming table to be jolted for more than 20min, so that the working layer is compact and compact, and the residual air in the working layer is reduced as much as possible.

(3) The prepared furnace burden is put into a smelting furnace, the furnace burden is raked flat, ignition material is laid on the upper surface, the area of the tiled ignition material is required to be an area with the diameter not less than 400mm, and the ignition material is conveyed into a smelting reaction chamber for ignition smelting. After ignition, the charge reacts rapidly and violently, and all the charges react within 60 seconds. Standing, naturally cooling for 48 hours, taking the temperature in the furnace below 50 ℃, disassembling the furnace body, and separating the alloy and the furnace slag to obtain 1752kg of vanadium-molybdenum-chromium-iron-aluminum alloy which is complete in crystallization, bright, free of air holes, free of slag inclusion and easy to break.

(4) Finishing the alloy to remove the crystallization defect part, then blasting sand to remove the surface oxidation film, crushing, screening, manually sorting, removing the alloy particles with the residual oxidation film, and finally vacuumizing and filling argon for packaging to obtain the vanadium-molybdenum-chromium-iron-aluminum alloy finished product.

(5) The components of the vanadium-molybdenum-chromium-iron-aluminum alloy for sampling and testing are respectively as follows: 37.2% of V, 29.5% of Mo, 18.2% of Al, 6.5% of Cr, 8.3% of Fe, 0.12% of Si, 0.005% of C, 0.020% of O, 0.06% of N, 0.02% of Cu, and 0.01% of Mn.

It can be seen that the V, Mo content of the obtained product varies greatly, with the V content exceeding the fluctuation range of the general product by 30-35% and the Mo content being lower than the fluctuation range of the general product by 30-35%.

Comparative example 2

(1) Taking the powder V₂O₅(purity 99%, granularity less than or equal to 1mm)800kg and MoO₃(purity is 99.2 percent, granularity is less than or equal to 1mm)720kg of Cr and₂O₃160kg (purity is 99.1 percent, granularity is less than or equal to 1mm), 80kg of iron powder (purity is 99.2 percent, granularity is less than or equal to 2mm) and 960kg of aluminum powder (purity is 99 percent, granularity is less than or equal to 2mm) for metallurgy, 120kg of lime is adopted as slagging agent, and the materials are fully mixed by a mixer after being accurately mixed>8min。

(2) Instead of using the smelting furnace body of the invention, a graphite crucible with an inner diameter of 800mm, an outer diameter of 1000mm and a wall thickness of 100mm is used as the smelting furnace body according to the prior art. The effective volume of the hearth is more than or equal to 0.8m³。

(3) The prepared furnace burden is put into a smelting furnace, the furnace burden is raked flat, ignition material is laid on the upper surface, the area of the tiled ignition material is required to be an area with the diameter not less than 400mm, and the ignition material is conveyed into a smelting reaction chamber for ignition smelting. After ignition, the charge reacts rapidly and violently, and all the charges react within 60 seconds. Standing, naturally cooling for 48 hours, taking the temperature in the furnace below 50 ℃, disassembling the furnace body, and separating the alloy and the furnace slag to obtain 1350kg of vanadium-molybdenum-chromium-iron-aluminum alloy which is complete in crystallization, bright, free of air holes, free of slag inclusion and easy to break.

(4) Finishing the alloy to remove the crystallization defect part, then blasting sand to remove the surface oxidation film, crushing, screening, manually sorting, removing the alloy particles with the residual oxidation film, and finally vacuumizing and filling argon for packaging to obtain the vanadium-molybdenum-chromium-iron-aluminum alloy finished product.

(5) The components of the vanadium-molybdenum-chromium-iron-aluminum alloy for sampling and testing are respectively as follows: 33.5% of V, 33.2% of Mo, 18.5% of Al, 6.5% of Cr, 6.6% of Fe, 0.10% of Si, 0.08% of C, 0.026% of O, 0.06% of N, 0.02% of Cu, and 0.01% of Mn.

It can be seen that the C content of the obtained product exceeds the general requirement that C is less than or equal to 0.04 percent, the smelting difficulty of the titanium alloy is increased, and the content of impurity elements of the subsequent product is easy to exceed the standard.

It should be appreciated that the particular features, structures, materials, or characteristics described in this specification may be combined in any suitable manner in any one or more embodiments. Furthermore, the various embodiments and features of the various embodiments described in this specification can be combined and combined by one skilled in the art without contradiction.