CN105219992B - Method for preparing AlV 55 intermediate alloy - Google Patents
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Abstract
The invention relates to a method for preparing AlV 55 intermediate alloy and belongs to the technical field of alloy preparation. The method includes the steps that dried vanadium pentoxide, aluminum powder and calcium fluoride are put into a smelting furnace after being mixed to be tamped/pressed, an aluminothermic reduction reaction is started through ignition for smelting, and natural cooling is conducted after smelting is completed; a surface slag layer and an oxidation layer are removed, and broken alloy ingot materials are obtained after breaking; the broken alloy ingot materials and aluminum shots are heated under the pressure of -0.096 MPa to -0.1 MPa till red spots are generated on the surfaces of the molten materials, and the materials are tamped through a tamping rod; when it is observed that the materials are completely molten into liquid, casting is conducted when the surface of the liquid is calm and free of bubbles; and casting is conducted while the materials are kept in the molten state and continuously enter a die with a cooling system, cooling is conducted for 2 or more hours after casting is finished, and the intermediate alloy is obtained. By means of the method, the impurity content and energy consumption can be lowered effectively, and the requirement for producing high-quality titanium alloy products is met by improving the quality of the intermediate alloy.
Description
Technical field
The present invention relates to a kind of preparation method of AlV55 intermediate alloys, belongs to field of alloy preparation technology.
Background technology
The advantages of titanium alloy is with light weight, high specific strength, corrosion resistance and good is widely used in war industry, aviation
Aerospace industry and civilian industry.AlV55 intermediate alloys are one of important source materials of production titanium alloy.At present, AlV55 intermediate alloys
Production mainly adopt traditional metal aluminothermic reduction smelting process, i.e. perrin process, this method mainly by control suitably match somebody with somebody
Material ratio, causes excess of aluminum and vanadic anhydride to carry out thermite reaction and prepare AlV55 intermediate alloys with outside sparking mode.
There is impurity content height in the AlV55 intermediate alloys of this method production, especially oxygen, carbon content are high, and compactness is poor, uniformity
Difference, the defect of the bad control such as alloy slag inclusion and V element content.In order to meet the high-quality titanium alloy pair such as Aero-Space
The technical requirements of AlV55 intermediate alloy higher qualities, some enterprises of this area increased two step vacuum intermediate frequency furnace smelting technology, first
First control suitable charge ratio and the higher aluminum vanadium intermediate alloy of content of vanadium prepared using traditional metal aluminothermic reduction smelting process,
Then increase aluminium shot usage amount in two step vacuum intermediate frequency furnace fusion process, prepare AlV55 intermediate alloys.In the middle of aluminum vanadium
Alloy is increased with the increase of content of vanadium, hardness and toughness, and fusing point is constantly raised, and causes broken difficult, fusing difficult, is not only consumed
Can be big, and two step Smelting Effects are undesirable, are extremely difficult to high-quality titanium alloy product manufacturing requirementss.
The content of the invention
For defect present in prior art, it is an object of the invention to provide a kind of preparation of AlV55 intermediate alloys
Method；Methods described can effectively reduce impurity content, and reducing energy consumption improves alloy uniformity and consistency, improves described
AlV55 intermediate alloy qualities reach the technical requirements of production high-quality titanium alloy product.
The purpose of the present invention is achieved through the following technical solutions.
A kind of preparation method of AlV55 intermediate alloys, methods described step is as follows：
(1) mixed material will be obtained after dry vanadic anhydride, aluminium powder and calcium fluoride mix homogeneously, in being put into smelting furnace
And consolidate/be compacted, lighting initiation thermite reaction carries out melting, and after the completion of melting, natural cooling obtains smelted product；Will
Smelted product removes surface slag blanket and oxide layer, obtains alloy pig, and alloy pig is crushed the broken material for obtaining alloy pig；
The mass ratio of vanadic anhydride, aluminium powder and calcium fluoride is 1:0.9～1:0.05～0.1.
It is preferred that purity >=99.5% of vanadic anhydride, ferrum, silicone content≤0.04%, granularity >=60 mesh；Aluminium powder purity
>=99.7%, granularity≤3mm；Calcium fluoride purity >=99.0%.
It is preferred that vanadic anhydride and adjuvant calcium fluoride are placed in stainless steel disc dried, drying temperature is 100 DEG C～
200 DEG C, drying time is 12h～24h.
It is preferred that aluminium powder is placed in stainless steel disc dried, drying temperature is 80 DEG C～90 DEG C, drying time be 12h～
24h。
It is preferred that by vanadic anhydride, aluminium powder and calcium fluoride by V-type batch mixer mixing 10min～30min, obtaining mixing former
Material.
It is preferred that mixed material is fitted in the graphite liner stove of smelting furnace and with stainless steel bar consolidating.
Melting is carried out it is preferred that being put in smelting furnace with the magnesium chips lighted and lighting initiation thermite reaction.
After the completion of melting, smelting furnace natural cooling >=48h in atmosphere.
It is preferred that cutting down the scum layer above smelted product with rustless steel axe, with rustless steel abrasive machine surface slag is further removed
Layer and oxide-film, obtain alloy pig.
It is preferred that being 8mm～13mm alloy pig crusher in crushing to granularity, the broken material of alloy pig is obtained.
(2) broken material and aluminium shot of alloy pig are heated to into material melting table under -0.096MPa～-0.1MPa vacuum
When face occurs at red, with charge bar is smash material is smash；When it was observed that material is completely melt into liquid, and liquid surface calmness bubble-free ease
Poured into a mould when going out；Cast will keep material for molten state and successively enter in the mould with cooling system, to keep away
Exempt from air entrance, after casting complete, continue cooling >=2h, obtain AlV55 intermediate alloys of the present invention.
It is preferred that aluminium shot purity >=99.85%, iron content≤0.12%, it is identical that granularity crushes material granularity with alloy pig.
It is preferred that the broken material and aluminium shot of alloy pig are added in the sintered crucible of vacuum medium frequency induction furnace carrying out step
(2), specially；Alloy pig broken material and aluminium shot are broken according to Part I alloy pig broken material, aluminium shot, Part II alloy pig
Particle order is added, and the weight ratio of Part I alloy pig broken material, aluminium shot and Part II alloy pig broken material is 20～30:
1:50；Vacuum medium frequency induction furnace bell is closed, the vacuum pump and circulating water cooling system of vacuum medium frequency induction furnace is opened, works as vacuum
Table shows when reaching -0.096MPa～-0.1MPa, opens electromagnetic heating system and heat, by the visual sem observation earthenware on bell
Material melting situation in crucible；When observing that material melting surface occurs at red in crucible, with charge bar is smash material is smash；When it was observed that thing
Material is completely melt into liquid, and liquid surface calmness bubble-free is poured into a mould when escaping；Cast will keep material for fusing shape
In state and successively mould of the entrance with cooling system, to avoid air from entering, after casting complete, intermediate frequency power supply is closed,
Keep cooling water circulation, cooling >=2h comes out of the stove, and obtains AlV55 intermediate alloys of the present invention.
More preferably electromagnetic heating system heating is specially：Power is adjusted first to 30KW, and power is adjusted after 5min to 50KW,
Power is adjusted to 80KW, power is adjusted to 130KW after 5min after 5min.
It is preferred that the mould with cooling system is the copper ingot mould with circulating water cooling system.
Beneficial effect
The invention provides a kind of preparation method of AlV55 intermediate alloys, methods described is using metal aluminothermic reduction melting
Method using aluminum as reducing agent, by chemical reaction 3V2O5+ 10Al=6V+5Al2O3In the middle of direct smelting method AlV55 produced
Alloy crude product, control vanadium content is 56%～59%；Appropriate aluminium shot is added during two step refines, flux effect is acted primarily as, in essence
Basic loss is complete during refining；AlV55 intermediate alloy vanadium contents maintain 56%～59% obtained in two step purifying methods, alloy
Carbon, oxygen content are substantially reduced, and compactness, uniformity are remarkably reinforced.
Specific embodiment
It is understandable to enable the above objects, features and advantages of the present invention to become apparent from, below by preferred concrete real
The present invention is further detailed explanation to apply example.
In following examples：
Purity >=99.5% of vanadic anhydride ,≤0.04%, granularity is all by 60 mesh standard sieves for ferrum, silicone content；
Aluminium powder purity >=99.7%, granularity≤3mm；Calcium fluoride purity >=99.0%；
Aluminium shot purity >=99.85%, iron content≤0.12%；
Vacuum medium frequency induction furnace model ZGL-0.2, purchased from Jinzhou Zhong Zhen electric furnaces company limited.
Embodiment 1
(1) vanadic anhydride and calcium fluoride are respectively put in stainless steel disc and are dried, drying temperature is 100 DEG C, is dried
The dry time is 12h, aluminium powder is put in stainless steel disc and is dried, and drying temperature is 80 DEG C, and drying time is 12h；By drying
150Kg vanadic anhydrides, 135Kg aluminium powders and 15Kg calcium fluoride after V-type batch mixer mixing 10min, obtain mixed material,
It is fitted in the graphite liner stove of smelting furnace and is consolidated with stainless steel bar, is put in smelting furnace with the magnesium chips lighted and lights initiation aluminothermy
Reduction reaction carries out melting；After the completion of melting, smelting furnace natural cooling 48h in atmosphere takes out smelted product from smelting furnace；
The scum layer above smelted product is cut down with rustless steel axe, with rustless steel abrasive machine surface slag blanket and oxidation are further removed
Film, obtains alloy pig；It is 8mm～13mm by alloy pig crusher in crushing to granularity, obtains the broken material of alloy pig；
(2) by alloy pig broken material and aluminium shot according to 20Kg Part I alloy pig broken materials, 1Kg granularities be 8mm～
The aluminium shot of 13mm, 50Kg Part II alloy pigs broken material order are added in the sintered crucible of vacuum medium frequency induction furnace；Close true
Empty intermediate frequency furnace bell, opens the vacuum pump and circulating water cooling system of vacuum medium frequency induction furnace, reach when vacuum meter shows-
During 0.096MPa～-0.1MPa, open electromagnetic heating system heating, first adjust power adjust after 30KW, 5min power to
50KW, power is adjusted to 80KW after 5min, power is adjusted to 130KW after 5min, by the visual sem observation earthenware on bell
Material melting situation in crucible；When observing that material melting surface occurs at red in crucible, with charge bar is smash material is smash；When it was observed that thing
Material is completely melt into liquid, and liquid surface calmness bubble-free is poured into a mould when escaping；It is melt that cast will keep material
Body and continuously enter in the copper ingot mould with circulating water cooling system in continuous line states in 1min, after casting complete, close
Intermediate frequency power supply, keeps cooling water circulation, and cooling 2h comes out of the stove, and obtains described AlV55 intermediate alloys.
Comparative example 1
Vanadic anhydride and calcium fluoride are respectively put in stainless steel disc and are dried, drying temperature is 100 DEG C, during drying
Between be 12h, aluminium powder is put in stainless steel disc and is dried, drying temperature be 80 DEG C, drying time is 12h；Will be dry
150Kg vanadic anhydrides, 135Kg aluminium powders and 15Kg calcium fluoride obtain mixed material after V-type batch mixer mixing 10min, dress
Enter in the graphite liner stove of smelting furnace and consolidated with stainless steel bar, be put in smelting furnace with the magnesium chips lighted and light initiation aluminothermy also
Original reaction carries out melting；After the completion of melting, smelting furnace natural cooling 48h in atmosphere takes out smelted product from smelting furnace；With
Rustless steel axe cuts down the scum layer above smelted product, and with rustless steel abrasive machine surface slag blanket and oxide-film are further removed,
Alloy pig is obtained, is AlV55 intermediate alloys.
AlV55 intermediate alloys and AlV55 intermediate alloys obtained in comparative example 1 are obtained to embodiment 1 to carry out physics, chemistry and refers to
Mark analysis, chemical index analysis requires to carry out using YS/T579-2014 standards；As a result as shown in table 1,2, it is known that institute of the present invention
AlV55 intermediate alloys obtained in the preparation method of the AlV55 intermediate alloys of offer melt with the step of prior art one that comparative example 1 is adopted
AlV55 intermediate alloys are compared obtained in refining method, and its alloy carbon, oxygen content are substantially reduced, and compactness, uniformity are remarkably reinforced.
The physical index analysis result of table 1
The chemical index analysis result of table 2 (% is mass percent)
Embodiment 2
(1) vanadic anhydride and calcium fluoride are respectively put in stainless steel disc and are dried, drying temperature is 150 DEG C, is dried
The dry time is 15h, aluminium powder is put in stainless steel disc and is dried, and drying temperature is 85 DEG C, and drying time is 15h；By drying
150Kg vanadic anhydrides, 150Kg aluminium powders and 7.5Kg calcium fluoride after V-type batch mixer mixing 20min, obtain mixing former
Material, is fitted in the graphite liner stove of smelting furnace and is consolidated with stainless steel bar, is put in smelting furnace with the magnesium chips lighted and lights initiation
Thermite reaction carries out melting；After the completion of melting, smelting furnace natural cooling 49h in atmosphere takes out melting from smelting furnace
Product；Cut down the scum layer above smelted product with rustless steel axe, with rustless steel abrasive machine further remove surface slag blanket and
Oxide-film, obtains alloy pig；It is 8mm～13mm by alloy pig crusher in crushing to granularity, obtains the broken material of alloy pig；
(2) by alloy pig broken material and aluminium shot according to 30Kg Part I alloy pig broken materials, 1Kg granularities be 8mm～
The aluminium shot of 13mm, 50Kg Part II alloy pigs broken material order are added in the sintered crucible of vacuum medium frequency induction furnace；Close true
Empty intermediate frequency furnace bell, opens the vacuum pump and circulating water cooling system of vacuum medium frequency induction furnace, reach when vacuum meter shows-
During 0.096MPa～-0.1MPa, open electromagnetic heating system heating, first adjust power adjust after 30KW, 5min power to
50KW, power is adjusted to 80KW after 5min, power is adjusted to 130KW after 5min, by the visual sem observation earthenware on bell
Material melting situation in crucible；When observing that material melting surface occurs at red in crucible, with charge bar is smash material is smash；When it was observed that thing
Material is completely melt into liquid, and liquid surface calmness bubble-free is poured into a mould when escaping；It is melt that cast will keep material
Body and continuously enter in the copper ingot mould with circulating water cooling system in continuous line states in 1min, after casting complete, close
Intermediate frequency power supply, keeps cooling water circulation, and cooling 3h comes out of the stove, and obtains described AlV55 intermediate alloys.
Comparative example 2
Vanadic anhydride and calcium fluoride are respectively put in stainless steel disc and are dried, drying temperature is 150 DEG C, during drying
Between be 15h, aluminium powder is put in stainless steel disc and is dried, drying temperature be 85 DEG C, drying time is 15h；Will be dry
150Kg vanadic anhydrides, 150Kg aluminium powders and 7.5Kg calcium fluoride obtain mixed material after V-type batch mixer mixing 20min,
It is fitted in the graphite liner stove of smelting furnace and is consolidated with stainless steel bar, is put in smelting furnace with the magnesium chips lighted and lights initiation aluminothermy
Reduction reaction carries out melting；After the completion of melting, smelting furnace natural cooling 49h in atmosphere takes out smelted product from smelting furnace；
The scum layer above smelted product is cut down with rustless steel axe, with rustless steel abrasive machine surface slag blanket and oxidation are further removed
Film, obtains alloy pig, is AlV55 intermediate alloys.
AlV55 intermediate alloys and AlV55 intermediate alloys obtained in comparative example 2 are obtained to embodiment 2 to carry out physics, chemistry and refers to
Mark analysis, chemical index analysis requires to carry out using YS/T579-2014 standards；As a result as shown in Table 3, 4, it is known that institute of the present invention
AlV55 intermediate alloys obtained in the preparation method of the AlV55 intermediate alloys of offer melt with the step of prior art one that comparative example 2 is adopted
AlV55 intermediate alloys are compared obtained in refining method, and its alloy carbon, oxygen content are substantially reduced, and compactness, uniformity are remarkably reinforced.
The physical index analysis result of table 3
The chemical index analysis result of table 4 (% is mass percent)
Embodiment 3
(1) vanadic anhydride and calcium fluoride are respectively put in stainless steel disc and are dried, drying temperature is 200 DEG C, is dried
The dry time is 24h, aluminium powder is put in stainless steel disc and is dried, and drying temperature is 90 DEG C, and drying time is 24h；By drying
150Kg vanadic anhydrides, 136Kg aluminium powders and 9Kg calcium fluoride after V-type batch mixer mixing 30min, obtain mixed material,
It is fitted in the graphite liner stove of smelting furnace and is consolidated with stainless steel bar, is put in smelting furnace with the magnesium chips lighted and lights initiation aluminothermy
Reduction reaction carries out melting；After the completion of melting, smelting furnace natural cooling 52h in atmosphere takes out smelted product from smelting furnace；
The scum layer above smelted product is cut down with rustless steel axe, with rustless steel abrasive machine surface slag blanket and oxidation are further removed
Film, obtains alloy pig；It is 8mm～13mm by alloy pig crusher in crushing to granularity, obtains the broken material of alloy pig；
(2) by alloy pig broken material and aluminium shot according to 25Kg Part I alloy pig broken materials, 1Kg granularities be 8mm～
The aluminium shot of 13mm, 50Kg Part II alloy pigs broken material order are added in the sintered crucible of vacuum medium frequency induction furnace；Close true
Empty intermediate frequency furnace bell, opens the vacuum pump and circulating water cooling system of vacuum medium frequency induction furnace, reach when vacuum meter shows-
During 0.096MPa～-0.1MPa, open electromagnetic heating system heating, first adjust power adjust after 30KW, 5min power to
50KW, power is adjusted to 80KW after 5min, power is adjusted to 130KW after 5min, by the visual sem observation earthenware on bell
Material melting situation in crucible；When observing that material melting surface occurs at red in crucible, with charge bar is smash material is smash；When it was observed that thing
Material is completely melt into liquid, and liquid surface calmness bubble-free is poured into a mould when escaping；It is melt that cast will keep material
Body and continuously enter in the copper ingot mould with circulating water cooling system in continuous line states in 1min, after casting complete, close
Intermediate frequency power supply, keeps cooling water circulation, and cooling 4h comes out of the stove, and obtains described AlV55 intermediate alloys.
Comparative example 3
Vanadic anhydride and calcium fluoride are respectively put in stainless steel disc and are dried, drying temperature is 200 DEG C, during drying
Between be 24h, aluminium powder is put in stainless steel disc and is dried, drying temperature be 90 DEG C, drying time is 24h；Will be dry
150Kg vanadic anhydrides, 136Kg aluminium powders and 9Kg calcium fluoride obtain mixed material after V-type batch mixer mixing 30min, dress
Enter in the graphite liner stove of smelting furnace and consolidated with stainless steel bar, be put in smelting furnace with the magnesium chips lighted and light initiation aluminothermy also
Original reaction carries out melting；After the completion of melting, smelting furnace natural cooling 52h in atmosphere takes out smelted product from smelting furnace；With
Rustless steel axe cuts down the scum layer above smelted product, and with rustless steel abrasive machine surface slag blanket and oxide-film are further removed,
Alloy pig is obtained, is AlV55 intermediate alloys.
AlV55 intermediate alloys and AlV55 intermediate alloys obtained in comparative example 3 are obtained to embodiment 3 to carry out physics, chemistry and refers to
Mark analysis, chemical index analysis requires to carry out using YS/T579-2014 standards；As a result as shown in Table 5,6, it is known that institute of the present invention
AlV55 intermediate alloys obtained in the preparation method of the AlV55 intermediate alloys of offer melt with the step of prior art one that comparative example 3 is adopted
AlV55 intermediate alloys are compared obtained in refining method, and its alloy carbon, oxygen content are substantially reduced, and compactness, uniformity are remarkably reinforced.
The alloy pig physical index analysis result of table 5
The alloy synthetic chemistry index analysis result of table 6 (% is mass percent)
Claims (10)
1. a kind of preparation method of AlV55 intermediate alloys, it is characterised in that：Methods described step is as follows：
(1) mixed material will be obtained after dry vanadic anhydride, aluminium powder and calcium fluoride mix homogeneously, is put in smelting furnace and smashes
Real/compacting, lighting initiation thermite reaction carries out melting, and after the completion of melting, natural cooling obtains smelted product；By melting
Product removes surface slag blanket and oxide layer, obtains alloy pig, and alloy pig is crushed the broken material for obtaining alloy pig；
The mass ratio of vanadic anhydride, aluminium powder and calcium fluoride is 1:0.9～1:0.05～0.1；
(2) by the broken material and aluminium shot of alloy pig under -0.096MPa～-0.1MPa vacuum, it is heated to material melting surface and goes out
When existing, with charge bar is smash material is smash at red；When observing that material is completely melt into liquid, and liquid surface calmness bubble-free is when escaping
Poured into a mould；Cast keeps material to be molten state and successively enter in the mould with cooling system, after casting complete,
Continue cooling >=2h, obtain described AlV55 intermediate alloys.
2. the preparation method of a kind of AlV55 intermediate alloys according to claim 1, it is characterised in that：In step (1)：Five
Purity >=99.5% of V 2 O, ferrum, silicone content≤0.04%, granularity >=60 mesh；Aluminium powder purity >=99.7%, granularity≤
3mm；Calcium fluoride purity >=99.0%；In step (2)：Aluminium shot purity >=99.85%, iron content≤0.12%.
3. the preparation method of a kind of AlV55 intermediate alloys according to claim 1, it is characterised in that：In step (1)：Will
Vanadic anhydride and adjuvant calcium fluoride are placed on stainless steel disc and dry 12h～24h at 100 DEG C～200 DEG C, and aluminium powder is placed on into rustless steel
12h～24h is dried in disk at 80 DEG C～90 DEG C.
4. the preparation method of a kind of AlV55 intermediate alloys according to claim 1, it is characterised in that：In step (1)：Will
Vanadic anhydride, aluminium powder and calcium fluoride obtain mixed material by V-type batch mixer mixing 10min～30min；By mixed material
It is fitted in the graphite liner stove of smelting furnace and with stainless steel bar and consolidates；It is put in smelting furnace with the magnesium chips lighted and lights initiation aluminothermy
Reduction reaction carries out melting；After the completion of melting, smelting furnace natural cooling >=48h in atmosphere；Melting is cut down with rustless steel axe
Scum layer above product, with rustless steel abrasive machine surface slag blanket and oxide-film are further removed, and obtain alloy pig.
5. the preparation method of a kind of AlV55 intermediate alloys according to claim 1, it is characterised in that：In step (1)：
Alloy pig crusher in crushing to granularity is 8mm～13mm, obtains the broken material of alloy pig.
6. the preparation method of a kind of AlV55 intermediate alloys according to any one of Claims 1 to 5, it is characterised in that：Step
(2) in：The broken material and aluminium shot of alloy pig are added in the sintered crucible of vacuum medium frequency induction furnace carries out step (2), aluminium shot
Granularity is identical with the broken material granularity of alloy pig.
7. the preparation method of a kind of AlV55 intermediate alloys according to claim 6, it is characterised in that：Step (2)：To close
Ingot broken material and aluminium shot are added according to Part I alloy pig broken material, aluminium shot, Part II alloy pig broken material order, the
The weight ratio of a part of alloy pig broken material, aluminium shot and Part II alloy pig broken material is 20～30:1:50；In closing vacuum
Frequency induction furnace bell, opens the vacuum pump and circulating water cooling system of vacuum medium frequency induction furnace, reach when vacuum meter shows-
During 0.096MPa～-0.1MPa, electromagnetic heating system heating is opened, it is molten to material in crucible by the visual sem observation on bell
When change surface occurs at red, with charge bar is smash material is smash；It was observed that material is completely melt into liquid, and liquid surface calmness bubble-free
Poured into a mould during effusion；Cast will keep material for molten state and successively enter in the mould with cooling system, pour
After the completion of note, intermediate frequency power supply is closed, keep cooling water circulation, cooling >=2h comes out of the stove.
8. the preparation method of a kind of AlV55 intermediate alloys according to any one of Claims 1 to 5, it is characterised in that：Step
(2) in：Electromagnetic heating system is heated to be：Power is adjusted first to 30kW, power is adjusted after 5min to 50kW, adjust after 5min
Power adjusts power to 130kW to 80kW after 5min.
9. the preparation method of a kind of AlV55 intermediate alloys according to any one of Claims 1 to 5, it is characterised in that：Step
(2) in：Mould with cooling system is the copper ingot mould with circulating water cooling system.
10. the preparation method of a kind of AlV55 intermediate alloys according to claim 1, it is characterised in that：
In step (1)：
Purity >=99.5% of vanadic anhydride, ferrum, silicone content≤0.04%, granularity >=60 mesh, aluminium powder purity >=99.7%,
Granularity≤3mm, calcium fluoride purity >=99.0%,
Vanadic anhydride and adjuvant calcium fluoride are placed in stainless steel disc and dry 12h～24h at 100 DEG C～200 DEG C,
Aluminium powder is placed in stainless steel disc and dries 12h～24h at 80 DEG C～90 DEG C,
By vanadic anhydride, aluminium powder and calcium fluoride by V-type batch mixer mixing 10min～30min, mixed material is obtained,
Mixed material is fitted in the graphite liner stove of smelting furnace and is consolidated with stainless steel bar,
Being put in smelting furnace to light with the magnesium chips lighted causes thermite reaction to carry out melting,
After the completion of melting, smelting furnace natural cooling >=48h in atmosphere,
The scum layer above smelted product is cut down with rustless steel axe, with rustless steel abrasive machine surface slag blanket and oxidation are further removed
Film, obtains alloy pig,
It is 8mm～13mm alloy pig crusher in crushing to granularity, obtains the broken material of alloy pig；
In step (2)：
Aluminium shot purity >=99.85%, iron content≤0.12%, granularity is identical with the broken material granularity of alloy pig；
Alloy pig broken material and aluminium shot is suitable according to Part I alloy pig broken material, aluminium shot, Part II alloy pig broken material
Sequence is added, and the weight ratio of Part I alloy pig broken material, aluminium shot and Part II alloy pig broken material is 20～30:1:50；
Vacuum medium frequency induction furnace bell is closed, the vacuum pump and circulating water cooling system of vacuum medium frequency induction furnace is opened, when vacuum meter shows
Show when reaching -0.096MPa～-0.1MPa, electromagnetic heating system heating is opened, by the visual sem observation on bell to crucible
When interior material melting surface occurs at red, with charge bar is smash material is smash；It was observed that material is completely melt into liquid, and liquid surface is flat
Quiet bubble-free is poured into a mould when escaping；Cast will keep material for molten state and successively enter the mould with cooling system
In tool, after casting complete, intermediate frequency power supply is closed, keeps cooling water circulation, cooling >=2h comes out of the stove,
Electromagnetic heating system is heated to be：Power being adjusted first to 30KW, power being adjusted after 5min to 50kW, after 5min work(is adjusted
Rate adjusts power to 130kW to 80kW after 5min,
Mould with cooling system is the copper ingot mould with circulating water cooling system.
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| CN110042238B (en) * | 2019-04-29 | 2021-04-27 | 攀钢集团攀枝花钢铁研究院有限公司 | Production method of high-quality FeV50 alloy |
| CN109943736B (en) * | 2019-04-30 | 2024-07-02 | 北京欧菲金太科技有限责任公司 | Aluminum-vanadium-titanium alloy manufacturing device and method |
| CN113652567A (en) * | 2021-07-27 | 2021-11-16 | 河钢承德钒钛新材料有限公司 | Vanadium-aluminum alloy and preparation method thereof |
| CN113564405B (en) * | 2021-07-28 | 2022-08-05 | 湖南众鑫新材料科技股份有限公司 | Production method of vanadium-aluminum alloy |
| 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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| CN101906546A (en) * | 2010-07-14 | 2010-12-08 | 承德天大钒业有限责任公司 | Method for preparing vanadium-aluminum alloy |
| CN103849787A (en) * | 2014-02-26 | 2014-06-11 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for preparing aerospace-level vanadium-aluminium alloy |
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| CN101906546A (en) * | 2010-07-14 | 2010-12-08 | 承德天大钒业有限责任公司 | Method for preparing vanadium-aluminum alloy |
| CN103849787A (en) * | 2014-02-26 | 2014-06-11 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for preparing aerospace-level vanadium-aluminium alloy |
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