CN105219992A - A kind of preparation method of AlV55 master alloy - Google Patents
A kind of preparation method of AlV55 master alloy Download PDFInfo
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Abstract
The present invention relates to a kind of preparation method of AlV55 master alloy, belong to field of alloy preparation technology.Described method is: after the Vanadium Pentoxide in FLAKES of drying, aluminium powder and Calcium Fluoride (Fluorspan) being mixed, put into smelting furnace and tamping/compacting, light and cause thermite reaction melting, naturally cooling after completing; Remove surperficial slag blanket and zone of oxidation, fragmentation obtains alloy pig broken material; When alloy pig broken material and aluminium shot being heated under-0.096MPa ~-0.1MPa red of material melting surface appearance, smash material with smashing charge bar; Liquid state is fused into completely when observing material, and cast when the tranquil bubble-free of fluid surface is overflowed; Cast keeps material to be melted state and successively to enter to have in the mould of cooling system, continues cooling >=2h, obtain described master alloy after casting complete.Described method can effectively reduce foreign matter content and energy consumption, improves the requirement that described master alloy quality reaches production high-quality titanium alloy product.
Description
Technical field
The present invention relates to a kind of preparation method of AlV55 master alloy, belong to field of alloy preparation technology.
Background technology
The advantages such as titanium alloy is light with quality, specific tenacity is high, corrosion resistance and good are widely used in war industry, aerospace industry and civilian industry.AlV55 master alloy is one of important source material of producing titanium alloy.At present, the production of AlV55 master alloy mainly adopts traditional metallic aluminium thermal reduction smelting process, i.e. perrin process, this method, mainly through controlling suitable ratio of components, is carried out thermite reaction with outside sparking mode initiation excess of aluminum and Vanadium Pentoxide in FLAKES and is prepared AlV55 master alloy.It is high to there is foreign matter content in the AlV55 master alloy that this method is produced, and especially oxygen, carbon content are high, and compactness is poor, lack of homogeneity, the defect of the bad controls such as alloy slag inclusion and V element content.In order to meet the technical requirements of the high-quality titanium alloys such as aerospace to AlV55 master alloy more high-quality, some enterprises of this area add two step vacuum intermediate frequency furnace melting technology, first controlling suitable ratio of components adopts traditional metallic aluminium thermal reduction smelting process to prepare the higher aluminium vanadium master alloy of content of vanadium, then in two step vacuum intermediate frequency furnace fusion process, increase aluminium shot usage quantity, prepare AlV55 master alloy.Because aluminium vanadium master alloy is along with the increase of content of vanadium, hardness and toughness strengthen, and fusing point constantly raises, and cause broken difficulty, fusing difficulty, not only power consumption is large, and two step Smelting Effects are undesirable, are difficult to reach the manufacturing requirements of high-quality titanium alloy product.
Summary of the invention
For the defect existed in prior art, the object of the present invention is to provide a kind of preparation method of AlV55 master alloy; Described method effectively can reduce foreign matter content, reduces energy consumption, improves alloy uniformity and density, improves the technical requirements that described AlV55 master alloy quality reaches production high-quality titanium alloy product.
The object of the invention is to be achieved through the following technical solutions.
A preparation method for AlV55 master alloy, described method steps is as follows:
(1) obtain mixing raw material after the Vanadium Pentoxide in FLAKES of drying, aluminium powder and Calcium Fluoride (Fluorspan) being mixed, put into smelting furnace and tamping/compacting, light initiation thermite reaction and carry out melting, after melting completes, naturally cooling, obtains smelted product; Smelted product is removed surperficial slag blanket and zone of oxidation, obtains alloy pig, alloy pig fragmentation is obtained the broken material of alloy pig;
The mass ratio of Vanadium Pentoxide in FLAKES, aluminium powder and Calcium Fluoride (Fluorspan) is 1:0.9 ~ 1:0.05 ~ 0.1.
Purity >=99.5% of preferred Vanadium Pentoxide in FLAKES, iron, silicone content all≤0.04%, granularity >=60 order; Aluminium powder purity >=99.7%, granularity≤3mm; Calcium Fluoride (Fluorspan) purity >=99.0%.
Preferably Vanadium Pentoxide in FLAKES and auxiliary material Calcium Fluoride (Fluorspan) are placed in Stainless Steel Disc and dry, bake out temperature is 100 DEG C ~ 200 DEG C, and drying time is 12h ~ 24h.
Preferably be placed in Stainless Steel Disc by aluminium powder and dry, bake out temperature is 80 DEG C ~ 90 DEG C, and drying time is 12h ~ 24h.
Preferably Vanadium Pentoxide in FLAKES, aluminium powder and Calcium Fluoride (Fluorspan) are passed through V-type mixer mixing 10min ~ 30min, obtain mixing raw material.
Preferably mixing raw material is loaded in the graphite liner stove of smelting furnace and also use stainless steel bar tamping.
Preferably with the magnesium chips lighted put into smelting furnace light cause thermite reaction carry out melting.
After melting completes, smelting furnace is naturally cooling >=48h in atmosphere.
Preferably cut down the scum layer above smelted product with stainless steel axe, remove surperficial slag blanket and oxide film further with stainless steel sharpening machine, obtain alloy pig.
Be preferably 8mm ~ 13mm alloy pig crusher in crushing to granularity, obtain the broken material of alloy pig.
(2) by the broken material of alloy pig and aluminium shot under-0.096MPa ~-0.1MPa vacuum, being heated to material melting surface when occurring at red, smashing material with smashing charge bar; Be fused into liquid state completely when observing material, and pour into a mould when the tranquil bubble-free of fluid surface is overflowed; Cast will keep material to be melted state and successively enter to have in the mould of cooling system, to avoid air to enter, after casting complete, continues cooling >=2h, obtains AlV55 master alloy of the present invention.
Preferred aluminium shot purity >=99.85%, iron level≤0.12%, granularity and alloy pig broken material granulometric facies are together.
Preferably the broken material of alloy pig and aluminium shot are joined in the sintered crucible of vacuum medium frequency induction furnace and carry out step (2), be specially; Alloy pig broken material and aluminium shot are added according to first part's alloy pig broken material, aluminium shot, second section alloy pig broken material order, the weight ratio of first part's alloy pig broken material, aluminium shot and second section alloy pig broken material is 20 ~ 30:1:50; Close vacuum medium frequency induction furnace bell, open vacuum pump and the circulating water cooling system of vacuum medium frequency induction furnace, when vacuum meter display reaches-0.096MPa ~-0.1MPa, open electromagnetic heating system heating, by material melting situation in the visual sem observation crucible on bell; When observing red of material melting surface appearance in crucible, smash material with smashing charge bar; Be fused into liquid state completely when observing material, and pour into a mould when the tranquil bubble-free of fluid surface is overflowed; Cast will keep material to be melted state and successively enter to have in the mould of cooling system, and to avoid air to enter, after casting complete, close intermediate frequency power supply, keep cooling water circulation, cooling >=2h comes out of the stove, and obtains AlV55 master alloy of the present invention.
More preferably electromagnetic heating system heating be specially: first after regulating power to 30KW, 5min regulating power to 50KW, after 5min regulating power to 80KW, after 5min regulating power to 130KW.
The mould preferably 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 master alloy, described method utilizes metallic aluminium thermal reduction smelting process using aluminium as reductive agent, by chemical reaction 3V
2o
5+ 10Al=6V+5Al
2o
3the direct smelting method AlV55 master alloy crude product produced, controls vanadiumcontent 56% ~ 59%; Add appropriate aluminium shot during two step refinings, mainly play fusing assistant effect, in refining process, basic loss is complete; The AlV55 master alloy vanadiumcontent that two step purifying methods obtain maintains 56% ~ 59%, and alloy carbon, oxygen level obviously reduce, and compactness, homogeneity obviously strengthen.
Embodiment
For enabling above-mentioned purpose of the present invention, feature and advantage become apparent more, and below by preferred specific embodiment, the present invention is further detailed explanation.
In following examples:
Purity >=99.5% of Vanadium Pentoxide in FLAKES, all≤0.04%, granularity is all by 60 mesh standard sieves for iron, silicone content; Aluminium powder purity >=99.7%, granularity≤3mm; Calcium Fluoride (Fluorspan) purity >=99.0%;
Aluminium shot purity >=99.85%, iron level≤0.12%;
Vacuum medium frequency induction furnace model is ZGL-0.2, purchased from Jinzhou Zhong Zhen electric furnace company limited.
Embodiment 1
(1) Vanadium Pentoxide in FLAKES and Calcium Fluoride (Fluorspan) are put into respectively in Stainless Steel Disc and dry, bake out temperature is 100 DEG C, and drying time is 12h, is put into by aluminium powder in Stainless Steel Disc and dries, and bake out temperature is 80 DEG C, and drying time is 12h; By the 150Kg Vanadium Pentoxide in FLAKES of drying, 135Kg aluminium powder and 15Kg Calcium Fluoride (Fluorspan) by after V-type mixer mixing 10min, obtain mixing raw material, load smelting furnace graphite liner stove in and use stainless steel bar tamping, with the magnesium chips lighted put into smelting furnace light initiation thermite reaction carry out melting; After melting completes, smelting furnace is naturally cooling 48h in atmosphere, from smelting furnace, take out smelted product; Cut down the scum layer above smelted product with stainless steel axe, remove surperficial slag blanket and oxide film further with stainless steel sharpening machine, obtain alloy pig; Be 8mm ~ 13mm by alloy pig crusher in crushing to granularity, obtain the broken material of alloy pig;
(2) by alloy pig broken material and aluminium shot according to 20Kg first part alloy pig broken material, 1Kg granularity be the aluminium shot of 8mm ~ 13mm, 50Kg second section alloy pig broken material order adds in the sintered crucible of vacuum medium frequency induction furnace; Close vacuum medium frequency induction furnace bell, open vacuum pump and the circulating water cooling system of vacuum medium frequency induction furnace, when vacuum meter display reaches-0.096MPa ~-0.1MPa, unlatching electromagnetic heating system heats, first regulating power after 30KW, 5min regulating power to 50KW, after 5min regulating power to 80KW, after 5min regulating power to 130KW, by material melting situation in the visual sem observation crucible on bell; When observing red of material melting surface appearance in crucible, smash material with smashing charge bar; Be fused into liquid state completely when observing material, and pour into a mould when the tranquil bubble-free of fluid surface is overflowed; Cast will keep material to be fusing fluid and enter in the state of not breaking in the copper ingot mould with circulating water cooling system in 1min continuously, after casting complete, closes intermediate frequency power supply, keeps cooling water circulation, and cooling 2h comes out of the stove, and obtains described AlV55 master alloy.
Comparative example 1
Vanadium Pentoxide in FLAKES and Calcium Fluoride (Fluorspan) are put into respectively in Stainless Steel Disc and dry, bake out temperature is 100 DEG C, and drying time is 12h, is put into by aluminium powder in Stainless Steel Disc and dries, and bake out temperature is 80 DEG C, and drying time is 12h; By the 150Kg Vanadium Pentoxide in FLAKES of drying, 135Kg aluminium powder and 15Kg Calcium Fluoride (Fluorspan) by after V-type mixer mixing 10min, obtain mixing raw material, load smelting furnace graphite liner stove in and use stainless steel bar tamping, with the magnesium chips lighted put into smelting furnace light initiation thermite reaction carry out melting; After melting completes, smelting furnace is naturally cooling 48h in atmosphere, from smelting furnace, take out smelted product; Cutting down the scum layer above smelted product with stainless steel axe, remove surperficial slag blanket and oxide film further, obtain alloy pig with stainless steel sharpening machine, is AlV55 master alloy.
Obtain AlV55 master alloy to embodiment 1 and the obtained AlV55 master alloy of comparative example 1 carries out physics, chemical index analysis, chemical index analysis adopts YS/T579-2014 standard-required to carry out; Result is as shown in table 1,2, compared with the AlV55 master alloy that the preparation method of known AlV55 master alloy provided by the present invention obtains and the obtained AlV55 master alloy of the prior art direct smelting method that comparative example 1 adopts, its alloy carbon, oxygen level obviously reduce, and compactness, homogeneity obviously strengthen.
Table 1 physical index analytical results
Table 2 chemical index analytical results (% is mass percent)
Embodiment 2
(1) Vanadium Pentoxide in FLAKES and Calcium Fluoride (Fluorspan) are put into respectively in Stainless Steel Disc and dry, bake out temperature is 150 DEG C, and drying time is 15h, is put into by aluminium powder in Stainless Steel Disc and dries, and bake out temperature is 85 DEG C, and drying time is 15h; By the 150Kg Vanadium Pentoxide in FLAKES of drying, 150Kg aluminium powder and 7.5Kg Calcium Fluoride (Fluorspan) by after V-type mixer mixing 20min, obtain mixing raw material, load smelting furnace graphite liner stove in and use stainless steel bar tamping, with the magnesium chips lighted put into smelting furnace light initiation thermite reaction carry out melting; After melting completes, smelting furnace is naturally cooling 49h in atmosphere, from smelting furnace, take out smelted product; Cut down the scum layer above smelted product with stainless steel axe, remove surperficial slag blanket and oxide film further with stainless steel sharpening machine, obtain alloy pig; Be 8mm ~ 13mm by alloy pig crusher in crushing to granularity, obtain the broken material of alloy pig;
(2) by alloy pig broken material and aluminium shot according to 30Kg first part alloy pig broken material, 1Kg granularity be the aluminium shot of 8mm ~ 13mm, 50Kg second section alloy pig broken material order adds in the sintered crucible of vacuum medium frequency induction furnace; Close vacuum medium frequency induction furnace bell, open vacuum pump and the circulating water cooling system of vacuum medium frequency induction furnace, when vacuum meter display reaches-0.096MPa ~-0.1MPa, unlatching electromagnetic heating system heats, first regulating power after 30KW, 5min regulating power to 50KW, after 5min regulating power to 80KW, after 5min regulating power to 130KW, by material melting situation in the visual sem observation crucible on bell; When observing red of material melting surface appearance in crucible, smash material with smashing charge bar; Be fused into liquid state completely when observing material, and pour into a mould when the tranquil bubble-free of fluid surface is overflowed; Cast will keep material to be fusing fluid and enter in the state of not breaking in the copper ingot mould with circulating water cooling system in 1min continuously, after casting complete, closes intermediate frequency power supply, keeps cooling water circulation, and cooling 3h comes out of the stove, and obtains described AlV55 master alloy.
Comparative example 2
Vanadium Pentoxide in FLAKES and Calcium Fluoride (Fluorspan) are put into respectively in Stainless Steel Disc and dry, bake out temperature is 150 DEG C, and drying time is 15h, is put into by aluminium powder in Stainless Steel Disc and dries, and bake out temperature is 85 DEG C, and drying time is 15h; By the 150Kg Vanadium Pentoxide in FLAKES of drying, 150Kg aluminium powder and 7.5Kg Calcium Fluoride (Fluorspan) by after V-type mixer mixing 20min, obtain mixing raw material, load smelting furnace graphite liner stove in and use stainless steel bar tamping, with the magnesium chips lighted put into smelting furnace light initiation thermite reaction carry out melting; After melting completes, smelting furnace is naturally cooling 49h in atmosphere, from smelting furnace, take out smelted product; Cutting down the scum layer above smelted product with stainless steel axe, remove surperficial slag blanket and oxide film further, obtain alloy pig with stainless steel sharpening machine, is AlV55 master alloy.
Obtain AlV55 master alloy to embodiment 2 and the obtained AlV55 master alloy of comparative example 2 carries out physics, chemical index analysis, chemical index analysis adopts YS/T579-2014 standard-required to carry out; Result as shown in Table 3, 4, compared with the AlV55 master alloy that the preparation method of known AlV55 master alloy provided by the present invention obtains and the obtained AlV55 master alloy of the prior art direct smelting method that comparative example 2 adopts, its alloy carbon, oxygen level obviously reduce, and compactness, homogeneity obviously strengthen.
Table 3 physical index analytical results
Table 4 chemical index analytical results (% is mass percent)
Embodiment 3
(1) Vanadium Pentoxide in FLAKES and Calcium Fluoride (Fluorspan) are put into respectively in Stainless Steel Disc and dry, bake out temperature is 200 DEG C, and drying time is 24h, is put into by aluminium powder in Stainless Steel Disc and dries, and bake out temperature is 90 DEG C, and drying time is 24h; By the 150Kg Vanadium Pentoxide in FLAKES of drying, 136Kg aluminium powder and 9Kg Calcium Fluoride (Fluorspan) by after V-type mixer mixing 30min, obtain mixing raw material, load smelting furnace graphite liner stove in and use stainless steel bar tamping, with the magnesium chips lighted put into smelting furnace light initiation thermite reaction carry out melting; After melting completes, smelting furnace is naturally cooling 52h in atmosphere, from smelting furnace, take out smelted product; Cut down the scum layer above smelted product with stainless steel axe, remove surperficial slag blanket and oxide film further with stainless steel sharpening machine, obtain alloy pig; Be 8mm ~ 13mm by alloy pig crusher in crushing to granularity, obtain the broken material of alloy pig;
(2) by alloy pig broken material and aluminium shot according to 25Kg first part alloy pig broken material, 1Kg granularity be the aluminium shot of 8mm ~ 13mm, 50Kg second section alloy pig broken material order adds in the sintered crucible of vacuum medium frequency induction furnace; Close vacuum medium frequency induction furnace bell, open vacuum pump and the circulating water cooling system of vacuum medium frequency induction furnace, when vacuum meter display reaches-0.096MPa ~-0.1MPa, unlatching electromagnetic heating system heats, first regulating power after 30KW, 5min regulating power to 50KW, after 5min regulating power to 80KW, after 5min regulating power to 130KW, by material melting situation in the visual sem observation crucible on bell; When observing red of material melting surface appearance in crucible, smash material with smashing charge bar; Be fused into liquid state completely when observing material, and pour into a mould when the tranquil bubble-free of fluid surface is overflowed; Cast will keep material to be fusing fluid and enter in the state of not breaking in the copper ingot mould with circulating water cooling system in 1min continuously, after casting complete, closes intermediate frequency power supply, keeps cooling water circulation, and cooling 4h comes out of the stove, and obtains described AlV55 master alloy.
Comparative example 3
Vanadium Pentoxide in FLAKES and Calcium Fluoride (Fluorspan) are put into respectively in Stainless Steel Disc and dry, bake out temperature is 200 DEG C, and drying time is 24h, is put into by aluminium powder in Stainless Steel Disc and dries, and bake out temperature is 90 DEG C, and drying time is 24h; By the 150Kg Vanadium Pentoxide in FLAKES of drying, 136Kg aluminium powder and 9Kg Calcium Fluoride (Fluorspan) by after V-type mixer mixing 30min, obtain mixing raw material, load smelting furnace graphite liner stove in and use stainless steel bar tamping, with the magnesium chips lighted put into smelting furnace light initiation thermite reaction carry out melting; After melting completes, smelting furnace is naturally cooling 52h in atmosphere, from smelting furnace, take out smelted product; Cutting down the scum layer above smelted product with stainless steel axe, remove surperficial slag blanket and oxide film further, obtain alloy pig with stainless steel sharpening machine, is AlV55 master alloy.
Obtain AlV55 master alloy to embodiment 3 and the obtained AlV55 master alloy of comparative example 3 carries out physics, chemical index analysis, chemical index analysis adopts YS/T579-2014 standard-required to carry out; Result as shown in Table 5,6, compared with the AlV55 master alloy that the preparation method of known AlV55 master alloy provided by the present invention obtains and the obtained AlV55 master alloy of the prior art direct smelting method that comparative example 3 adopts, its alloy carbon, oxygen level obviously reduce, and compactness, homogeneity obviously strengthen.
Table 5 alloy pig physical index analytical results
Table 6 alloy synthetic chemistry index analysis result (% is mass percent)
Claims (10)
1. a preparation method for AlV55 master alloy, is characterized in that: described method steps is as follows:
(1) obtain mixing raw material after the Vanadium Pentoxide in FLAKES of drying, aluminium powder and Calcium Fluoride (Fluorspan) being mixed, put into smelting furnace and tamping/compacting, light initiation thermite reaction and carry out melting, after melting completes, naturally cooling, obtains smelted product; Smelted product is removed surperficial slag blanket and zone of oxidation, obtains alloy pig, alloy pig fragmentation is obtained the broken material of alloy pig;
The mass ratio of Vanadium Pentoxide in FLAKES, aluminium powder and Calcium Fluoride (Fluorspan) is 1:0.9 ~ 1:0.05 ~ 0.1;
(2) by the broken material of alloy pig and aluminium shot under-0.096MPa ~-0.1MPa vacuum, being heated to material melting surface when occurring at red, smashing material with smashing charge bar; Be fused into liquid state completely when observing material, and pour into a mould when the tranquil bubble-free of fluid surface is overflowed; Cast keeps material to be melted state and successively to enter to have in the mould of cooling system, after casting complete, continues cooling >=2h, obtains described AlV55 master alloy.
2. the preparation method of a kind of AlV55 master alloy according to claim 1, is characterized in that: in step (1): purity >=99.5% of Vanadium Pentoxide in FLAKES, iron, silicone content all≤0.04%, granularity >=60 order; Aluminium powder purity >=99.7%, granularity≤3mm; Calcium Fluoride (Fluorspan) purity >=99.0%; In step (2): aluminium shot purity >=99.85%, iron level≤0.12%.
3. the preparation method of a kind of AlV55 master alloy according to claim 1, it is characterized in that: in step (1): Vanadium Pentoxide in FLAKES and auxiliary material Calcium Fluoride (Fluorspan) are placed on 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.
4. the preparation method of a kind of AlV55 master alloy according to claim 1, is characterized in that: in step (1): by Vanadium Pentoxide in FLAKES, aluminium powder and Calcium Fluoride (Fluorspan) by V-type mixer mixing 10min ~ 30min, obtain mixing raw material; Mixing raw material is loaded in the graphite liner stove of smelting furnace and also use stainless steel bar tamping; With the magnesium chips lighted put into smelting furnace light cause thermite reaction carry out melting; After melting completes, smelting furnace is naturally cooling >=48h in atmosphere; Cut down the scum layer above smelted product with stainless steel axe, remove surperficial slag blanket and oxide film further with stainless steel sharpening machine, obtain alloy pig.
5. the preparation method of a kind of AlV55 master alloy according to claim 1, is characterized in that: in step (1): be 8mm ~ 13mm alloy pig crusher in crushing to granularity, obtains the broken material of alloy pig.
6. the preparation method of a kind of AlV55 master alloy according to any one of Claims 1 to 5, it is characterized in that: in step (2): the broken material of alloy pig and aluminium shot are joined in the sintered crucible of vacuum medium frequency induction furnace and carry out step (2), aluminium shot granularity and alloy pig broken material granulometric facies are together.
7. the preparation method of a kind of AlV55 master alloy according to claim 6, it is characterized in that: step (2): alloy pig broken material and aluminium shot are added according to first part's alloy pig broken material, aluminium shot, second section alloy pig broken material order, the weight ratio of first part's alloy pig broken material, aluminium shot and second section alloy pig broken material is 20 ~ 30:1:50; Close vacuum medium frequency induction furnace bell, open vacuum pump and the circulating water cooling system of vacuum medium frequency induction furnace, when vacuum meter display reaches-0.096MPa ~-0.1MPa, unlatching electromagnetic heating system heats, by the visual sem observation on bell to when material melting surface occurs at red in crucible, smash material with smashing charge bar; Observe material and be fused into liquid state completely, and pour into a mould when the tranquil bubble-free of fluid surface is overflowed; Cast will keep material to be melted state and successively enter to have in the mould of cooling system, and after casting complete, close intermediate frequency power supply, keep cooling water circulation, cooling >=2h comes out of the stove.
8. the preparation method of a kind of AlV55 master alloy according to any one of Claims 1 to 5, it is characterized in that: in step (2): electromagnetic heating system is heated to be: first regulating power is to 30KW, after 5min, regulating power is to 50KW, after 5min regulating power to 80KW, after 5min regulating power to 130KW.
9. the preparation method of a kind of AlV55 master alloy according to any one of Claims 1 to 5, is characterized in that: in step (2): the mould with cooling system is the copper ingot mould with circulating water cooling system.
10. the preparation method of a kind of AlV55 master alloy according to claim 1, is characterized in that:
In step (1):
Purity >=99.5% of Vanadium Pentoxide in FLAKES, iron, silicone content all≤0.04%, granularity >=60 order, aluminium powder purity >=99.7%, granularity≤3mm, Calcium Fluoride (Fluorspan) purity >=99.0%,
Vanadium Pentoxide in FLAKES and auxiliary material Calcium Fluoride (Fluorspan) 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 Vanadium Pentoxide in FLAKES, aluminium powder and Calcium Fluoride (Fluorspan) by V-type mixer mixing 10min ~ 30min, obtain mixing raw material,
Mixing raw material is loaded in the graphite liner stove of smelting furnace and also uses stainless steel bar tamping,
With the magnesium chips lighted put into smelting furnace light cause thermite reaction carry out melting,
After melting completes, smelting furnace is naturally cooling >=48h in atmosphere,
Cut down the scum layer above smelted product with stainless steel axe, remove surperficial slag blanket and oxide film further with stainless steel sharpening machine, obtain alloy pig,
Be 8mm ~ 13mm alloy pig crusher in crushing to granularity, obtain the broken material of alloy pig;
In step (2):
Aluminium shot purity >=99.85%, iron level≤0.12%, granularity and alloy pig broken material granulometric facies are together;
Alloy pig broken material and aluminium shot are added according to first part's alloy pig broken material, aluminium shot, second section alloy pig broken material order, the weight ratio of first part's alloy pig broken material, aluminium shot and second section alloy pig broken material is 20 ~ 30:1:50; Close vacuum medium frequency induction furnace bell, open vacuum pump and the circulating water cooling system of vacuum medium frequency induction furnace, when vacuum meter display reaches-0.096MPa ~-0.1MPa, unlatching electromagnetic heating system heats, by the visual sem observation on bell to when material melting surface occurs at red in crucible, smash material with smashing charge bar; Observe material and be fused into liquid state completely, and pour into a mould when the tranquil bubble-free of fluid surface is overflowed; Cast will keep material to be melted state and successively enter to have in the mould of cooling system, and after casting complete, close intermediate frequency power supply, keep cooling water circulation, cooling >=2h comes out of the stove,
Electromagnetic heating system is heated to be: first after regulating power to 30KW, 5min regulating power to 50KW, after 5min regulating power to 80KW, after 5min regulating power to 130KW,
The mould with cooling system is the copper ingot mould with circulating water cooling system.
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| CN109943736A (en) * | 2019-04-30 | 2019-06-28 | 北京欧菲金太科技有限责任公司 | A kind of aluminium V-Ti producing device and method |
| CN110042238A (en) * | 2019-04-29 | 2019-07-23 | 攀钢集团攀枝花钢铁研究院有限公司 | The production method of high-quality FeV50 alloy |
| CN113564405A (en) * | 2021-07-28 | 2021-10-29 | 湖南众鑫新材料科技股份有限公司 | Production method of vanadium-aluminum alloy |
| 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 |
| CN113737034A (en) * | 2021-08-06 | 2021-12-03 | 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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| CN110042238A (en) * | 2019-04-29 | 2019-07-23 | 攀钢集团攀枝花钢铁研究院有限公司 | The production method of high-quality FeV50 alloy |
| CN109943736A (en) * | 2019-04-30 | 2019-06-28 | 北京欧菲金太科技有限责任公司 | A kind of aluminium V-Ti producing 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 |
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