CN105755341B - Aerospace level vananum and preparation method thereof - Google Patents
Aerospace level vananum and preparation method thereof Download PDFInfo
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- CN105755341B CN105755341B CN201610329753.6A CN201610329753A CN105755341B CN 105755341 B CN105755341 B CN 105755341B CN 201610329753 A CN201610329753 A CN 201610329753A CN 105755341 B CN105755341 B CN 105755341B
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- vananum
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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
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- 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
- C22C1/03—Making non-ferrous alloys by melting using master alloys
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- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
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Abstract
The invention belongs to field of metallurgy, and in particular to a kind of aerospace level vananum and preparation method thereof.The technical problems to be solved by the invention are to provide a kind of preparation method of aerospace level vananum, comprise the following steps：Fusion smelting prepares AlV65 to AlV85 under vacuum with metallic aluminium；Wherein, AlV85 and metallic aluminium weight ratio are 2.41~4.67 ︰ 1；It is 5~9Pa to control vacuum；The time for controlling melting to start to come out of the stove to alloy is 40~45min；Degree of superheat when controlling the alloy to come out of the stove is 41~50 DEG C.This method is simple to operate, and gained vananum disclosure satisfy that the requirement of aerospace level vananum.
Description
Technical field
The invention belongs to field of metallurgy, and in particular to a kind of aerospace level vananum and preparation method thereof.
Background technology
The vacuum refining of alloy is the pyro-refining method being less than or far below impurity in crude metal is removed under normal pressure.This
Kind of method under certain condition can also be in synthetical recovery crude metal valuable element.Vacuum refining decapacitation is prevented in metal and air
Oxygen, nitrogen react and avoided outside the pollution of gaseous impurity, it is often more important that can also to many refining process (particularly degasification process)
Create the thermodynamics and kineticses condition for being conducive to metal and impurity to separate.
Vananum is a kind of basic material for titanium alloy, be currently after vanadium after application of RE in the steel it is second largest should
Use field.Ti-6Al-4V and Ti-8Al-1Mo-1V, both titanium alloys account for the 50% of titanium alloy market altogether, are mainly used in life
Produce jet engine, high-speed aircraft skeleton and rocket engine casing.Titanium alloy production vanadium used is with vananum shape
Formula is added.The country such as Japan, the U.S., Britain is also in the further application study increased containing V-Ti in civilian industry.
At present, it is general using vanadic anhydride as raw material in vananum production technology, vananum is produced using aluminothermic process.
Because vanadic anhydride and metal reactive aluminum release substantial amounts of heat, heat is significantly superfluous, it is explosive that reaction is presented, in thermal insulation
In the case of be enough to make the temperature of system to be increased to more than 3000 DEG C.Therefore, a certain amount of inert material is generally incorporated in furnace charge
Matter (being commonly called as the thermit powder that disappears) controls the temperature rise of reaction speed and reaction product.Due to disappear thermit powder always containing a certain amount of Fe, Si,
Impurity content is higher in P and heavy metal element, therefore the vananum produced.
A kind of preparation method of vanadium-aluminum alloy material is disclosed in Chinese patent CN200910117560.4, the method presses quality
Percentages, weigh powdered Al 20%~33.1%, V2O550%~66.9%, mixed 8~16 hours in ball mill
Afterwards, it is placed in copper mould and is compacted with forcing press under 60~80MPa pressure, the mould of reaction mass that will be equipped with pressing is put in
In thermit reaction container, detonator is placed on material, remaining air is blown out with inert gas, under the protection of 2~7MPa argon gas,
It is heated to 300 DEG C or so to be reacted, obtains vananum, wherein, according to mass percent, V is that 75%~95%, Al is
5.0%~25.0%, S content about 0.15%, Fe contents about 0.50%.Obviously in above-mentioned technique, Fe in the product obtained
Higher with the impurity content such as S, this is due to that mixing can introduce some impurity in 8~16 hours in ball mill.Further, since aluminothermy
Reaction is carried out in closed pressure vessel, therefore strongly limit the yield of vananum, further, since requiring the resistance to of equipment
Press performance strong, therefore manufacturing cost can be improved.
The content of the invention
In view of the above-mentioned problems, the invention provides a kind of aerospace level vananum and preparation method thereof.This method include with
Lower step：Fusion smelting prepares AlV65 to AlV85 under vacuum with metallic aluminium；Wherein, AlV85 and metallic aluminium weight
Than for 2.41~4.67 ︰ 1；It is 5~9Pa to control vacuum；The time for controlling melting to start to come out of the stove to alloy is 40~45min；
Degree of superheat when controlling the alloy to come out of the stove is 41~50 DEG C.
It is preferred that, in the above method, purity >=99.85% of the aluminium.
It is preferred that, in the above method, the granularity of the AlV85 is 0.25~6.3mm.
It is preferred that, in the above method, the vacuum condition uses vaccum sensitive stove.
Present invention also offers the aerospace prepared by the above method level vananum.
The inventive method reasonably optimizes raw material proportioning, vacuum, melting time, degree of superheat etc., and they cooperate,
So that the inventive method can either adjust vanadium and the ratio of aluminium and can further remove the impurity in alloy again, so as to be prepared into
The vananum impurity content that arrives is low, purity is higher, disclosure satisfy that the requirement of aerospace level vananum.In vananum of the present invention
Exemplary chemical composition is：V be 60~70wt%, Al be 30~40wt%, Fe≤0.3wt%, Si≤0.35wt%, N≤
0.04wt%, H≤0.01wt%, O≤0.10wt%, B≤0.003wt%, C≤0.10wt%, S≤0.02wt%, P≤
0.03wt%, Mo≤0.15wt%, Cr≤0.10wt%, Cu≤0.05wt%, W≤0.015wt%, Mn≤0.05wt%, Mg
≤ 0.25wt%, Ni≤0.05wt%, Pb≤0.10wt%, disclosure satisfy that the chemical composition requirement of aerospace level vananum.
Embodiment
A kind of method for preparing aerospace level vananum, using primary AlV85, aluminum shot as raw material, using the side of an auxiliary material
Formula, smelts in vaccum sensitive stove and obtains the AlV65 that impurity content meets aerospace level requirement；Wherein, AlV85 and metallic aluminium weight
Than for 2.41~4.67 ︰ 1；It is 5~9Pa to control vacuum；The time for controlling melting to start to come out of the stove to alloy is 40~45min；
Degree of superheat when controlling the alloy to come out of the stove is 41~50 DEG C.
In order that final products component content meets the requirement of aerospace level vananum.The inventive method by AlV85 with gold
It is 2.41~4.67 ︰ 1 to belong to aluminium weight than control.
Found through inventor, when the degree of superheat is less than 41 DEG C, impurity is not easy to float in alloy, causes contaminant overstandard, together
When do not allow easy-formation when casting；When the degree of superheat is more than 50 DEG C, Aluminum in Alloy volatilization can be caused serious again, it is not easy to control alloy
Composition.So, degree of superheat when the inventive method controls the alloy to come out of the stove is 41~50 DEG C.
In order to make AlV85 and Al preferably merge what gas and solid impurity in alloying, and alloy can be removed
Compare comprehensive and economy.The time that the inventive method controls melting to start to come out of the stove to alloy is 40~45min.
Found through inventor, gas will not remove to reach standard requirement in the low alloy of vacuum during smelting；Vacuum
Spending height can cause aluminium alloy excessively to be seethed in stove, the reduction of alloy yield be caused, while cost of idleness.So, present invention side
Method controls vacuum to be 5~9Pa.
It is preferred that, purity >=99.85% of the aluminum shot.
It is preferred that, the AlV85 granularities are 0.25~6.3mm.
Present invention also offers the vananum prepared by the above method.
The raw material A lV85 of the present invention is existing product, can be commercially commercially available.AlV85 need to meet non-ferrous metal
Industry code requirements YS/T 579-2006, see the table below 1.
The chemical composition standards of 1 YS/T of table 579-2006/%
Note：When chemical composition has particular/special requirement, consulted to determine by both sides of supply and demand.
The following example smelting equipment uses 50kg (steel weight) vaccum sensitive stove, model ZG-0.05 types, purchased from brocade
State transformer electric furnace factory.
Embodiment 1
Take 100kg AlV85,41.49kg aluminum shots are raw material, the weight ratio of AlV85 and aluminum shot is 2.41 ︰ 1, in vacuum sense
Answer and smelting reaction is carried out in stove, the degree of superheat is 41 DEG C when alloy product is come out of the stove, and fusion smelting time 40min, vacuum degree control exists
5Pa, after the completion of reaction, stands 30min, obtains 141.03kg AlV65 products, wherein V is that 60wt%, Al are 39wt%, and Fe is
0.1wt%, Si are 0.19wt%, and N is 0.04wt%, and H is 0.01wt%, and O is 0.10wt%, and B is 0.003wt%, and C is
0.10wt%, S are 0.02wt%, and P is 0.03wt%, and Mo is 0.05wt%, and Cr is 0.10wt%, and Cu is 0.05wt%, and W is
0.015wt%, Mn are 0.05wt%, and Mg is 0.05wt%, and Ni is 0.05wt%, and Pb is 0.04wt%.
Embodiment 2
Take 100kg AlV85,33.3kg aluminum shots are raw material, the weight ratio of AlV85 and aluminum shot is 3 ︰ 1, in vaccum sensitive stove
It is interior progress smelting reaction, when alloy product is come out of the stove the degree of superheat be 45 DEG C, fusion smelting time 43min, vacuum degree control in 7Pa,
After the completion of reaction, 30min is stood, 133.02kg vananum products are obtained, wherein being that 63.76wt%, Al are containing V
35.24wt%, Fe are 0.08wt%, and Si is 0.21wt%, and N is 0.04wt%, and H is 0.02wt%, and O is 0.09wt%, and B is
0.003wt%, C are 0.10wt%, and S is 0.01wt%, and P is 0.04wt%, and Mo is 0.05wt%, and Cr is 0.10wt%, and Cu is
0.05wt%, W are 0.015wt%, and Mn is 0.04wt%, and Mg is 0.06wt%, and Ni is 0.06wt%, and Pb is 0.03wt%.
Embodiment 3
Take 100kg AlV85,21.41kg aluminum shots are raw material, the weight ratio of AlV85 and aluminum shot is 4.67 ︰ 1, in vacuum sense
Answer and smelting reaction is carried out in stove, the degree of superheat is 50 DEG C when alloy product is come out of the stove, and fusion smelting time 45min, vacuum degree control exists
9Pa, after the completion of reaction, stands 30min, obtains 121.23kg vananum products, wherein be that 70wt%, Al are 29wt% containing V,
Fe is 0.06wt%, and Si is 0.23wt%, and N is 0.03wt%, and H is 0.03wt%, and O is 0.09wt%, and B is 0.003wt%, C
For 0.10wt%, S is 0.01wt%, and P is 0.04wt%, and Mo is 0.05wt%, and Cr is 0.10wt%, and Cu is 0.05wt%, and W is
0.015wt%, Mn are 0.04wt%, and Mg is 0.06wt%, and Ni is 0.05wt%, and Pb is 0.04wt%.
The present invention obtains vananum product, meets the chemical composition requirement of aerospace level vananum.
Claims (5)
1. the preparation method of aerospace level vananum, it is characterised in that：Comprise the following steps：AlV85 is with metallic aluminium in vacuum bar
Fusion smelting prepares AlV65 under part；Wherein, AlV85 and metallic aluminium weight ratio are 2.41~4.67 ︰ 1；The vacuum is controlled to be
5~9Pa；The time for controlling melting to start to come out of the stove to alloy is 40~45min；Degree of superheat when controlling the alloy to come out of the stove is 41~50
℃。
2. the preparation method of aerospace level vananum according to claim 1, it is characterised in that：The purity of the aluminium >=
99.85%.
3. the preparation method of aerospace level vananum according to claim 1, it is characterised in that：The granularity of the AlV85
For 0.25~6.3mm.
4. the preparation method of aerospace level vananum according to claim 1, it is characterised in that：The vacuum condition is used
Vaccum sensitive stove.
5. aerospace level vananum, it is characterised in that：Prepared as the preparation method described in any one of Claims 1 to 4.
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| CN201610329753.6A CN105755341B (en) | 2016-05-18 | 2016-05-18 | Aerospace level vananum and preparation method thereof |
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| CN201610329753.6A CN105755341B (en) | 2016-05-18 | 2016-05-18 | Aerospace level vananum and preparation method thereof |
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| CN105755341B true CN105755341B (en) | 2017-09-08 |
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| CN113737034B (en) * | 2021-08-06 | 2022-03-15 | 上海康臣特种金属材料有限公司 | Method and device for preparing aluminum-vanadium intermediate alloy by two-step method |
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| CN101906546B (en) * | 2010-07-14 | 2012-11-28 | 承德天大钒业有限责任公司 | Method for preparing vanadium-aluminum alloy |
| CN103215464B (en) * | 2012-01-19 | 2015-05-27 | 永城金联星铝合金有限公司 | Method for making aluminum-vanadium intermediate alloy through utilizing vanadium-aluminum alloy and aluminum |
| CN102925730A (en) * | 2012-10-24 | 2013-02-13 | 攀钢集团攀枝花钢钒有限公司 | Production method of vanadium-aluminum (V-Al) alloy |
| CN103849787B (en) * | 2014-02-26 | 2015-12-09 | 攀钢集团攀枝花钢铁研究院有限公司 | A kind of preparation method of aerospace level vananum |
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