CN117144170A - Preparation method of high-density vanadium-aluminum alloy - Google Patents
Preparation method of high-density vanadium-aluminum alloy Download PDFInfo
- Publication number
- CN117144170A CN117144170A CN202311143134.4A CN202311143134A CN117144170A CN 117144170 A CN117144170 A CN 117144170A CN 202311143134 A CN202311143134 A CN 202311143134A CN 117144170 A CN117144170 A CN 117144170A
- Authority
- CN
- China
- Prior art keywords
- alloy
- smelting
- vanadium
- aluminum alloy
- layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 42
- PTXMVOUNAHFTFC-UHFFFAOYSA-N alumane;vanadium Chemical compound [AlH3].[V] PTXMVOUNAHFTFC-UHFFFAOYSA-N 0.000 title claims abstract description 42
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- 239000000956 alloy Substances 0.000 claims abstract description 132
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 130
- 238000003723 Smelting Methods 0.000 claims abstract description 118
- GNTDGMZSJNCJKK-UHFFFAOYSA-N divanadium pentaoxide Chemical compound O=[V](=O)O[V](=O)=O GNTDGMZSJNCJKK-UHFFFAOYSA-N 0.000 claims abstract description 104
- 239000002893 slag Substances 0.000 claims abstract description 60
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 51
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims abstract description 43
- 235000011941 Tilia x europaea Nutrition 0.000 claims abstract description 43
- 239000004571 lime Substances 0.000 claims abstract description 43
- 239000000203 mixture Substances 0.000 claims abstract description 38
- 238000002156 mixing Methods 0.000 claims abstract description 34
- 238000000034 method Methods 0.000 claims abstract description 30
- 238000004519 manufacturing process Methods 0.000 claims abstract description 3
- 238000007711 solidification Methods 0.000 claims description 18
- 230000008023 solidification Effects 0.000 claims description 18
- 238000012216 screening Methods 0.000 claims description 9
- 238000005488 sandblasting Methods 0.000 claims description 8
- 239000011819 refractory material Substances 0.000 claims description 6
- 238000001816 cooling Methods 0.000 abstract description 22
- 238000001739 density measurement Methods 0.000 abstract description 4
- 239000002994 raw material Substances 0.000 abstract description 3
- 229910052751 metal Inorganic materials 0.000 abstract description 2
- 239000002184 metal Substances 0.000 abstract description 2
- 238000005272 metallurgy Methods 0.000 abstract description 2
- 229910052720 vanadium Inorganic materials 0.000 abstract 1
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 abstract 1
- 239000000463 material Substances 0.000 description 9
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 8
- 230000002950 deficient Effects 0.000 description 8
- 238000002844 melting Methods 0.000 description 7
- 230000008018 melting Effects 0.000 description 7
- 230000000903 blocking effect Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 229910001069 Ti alloy Inorganic materials 0.000 description 5
- 230000007547 defect Effects 0.000 description 5
- 239000013078 crystal Substances 0.000 description 4
- 239000000395 magnesium oxide Substances 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 239000011449 brick Substances 0.000 description 3
- 229910052593 corundum Inorganic materials 0.000 description 3
- 239000010431 corundum Substances 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 210000003141 lower extremity Anatomy 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910000601 superalloy Inorganic materials 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B34/00—Obtaining refractory metals
- C22B34/20—Obtaining niobium, tantalum or vanadium
- C22B34/22—Obtaining vanadium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B5/00—General methods of reducing to metals
- C22B5/02—Dry methods smelting of sulfides or formation of mattes
- C22B5/04—Dry methods smelting of sulfides or formation of mattes by aluminium, other metals or silicon
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B14/00—Crucible or pot furnaces
- F27B14/08—Details peculiar to crucible or pot furnaces
-
- 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
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- General Engineering & Computer Science (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention relates to the technical field of metallurgy, in particular to a preparation method of a high-density vanadium-aluminum alloy. S1, mixing vanadium pentoxide, aluminum powder and lime according to a preset proportion according to a smelting space of a smelting furnace to obtain a mixture; wherein, the weight proportion of the vanadium pentoxide, the aluminum powder and the lime in the mixture is as follows: 900-1100:700-900:10-100; s2, adding the mixture into a smelting space of a smelting furnace for smelting; s3, standing after smelting is completed, and disassembling the furnace body after the temperature in the smelting furnace is less than 100 ℃, separating the obtained alloy cake from slag, and removing slag attached to the surface of the alloy. The invention prepares the high-density measurement vanadium-aluminum alloy by controlling a plurality of technological processes of raw material proportioning, mixing, smelting, furnace body preparation, cooling and the like and adopting a one-step smelting method to prepare the high-density measurement vanadium-aluminum alloy, thereby realizing low-cost and high-quality production of the high-density vanadium-aluminum alloy, wherein the porosity of the obtained vanadium-aluminum alloy is less than 1.5 percent, and the method has short technological process and small loss of valuable metal vanadium in the process.
Description
Technical Field
The invention relates to the technical field of metallurgy, in particular to a preparation method of a high-density vanadium-aluminum alloy.
Background
The titanium alloy is a high-performance alloy material formed by adding one or more elements into metallic titanium and smelting, and is widely applied to the field of aviation military industry due to the excellent performances of light specific gravity, high strength, good heat resistance and the like. Titanium alloys are alloys based on titanium with the addition of other elements. The vanadium-aluminum alloy is an intermediate alloy which is required to be added in the preparation of titanium alloy materials for aviation and military industry, and aviation and military industry users have strict requirements on all quality of raw materials of the vanadium-aluminum alloy, besides strict requirements on chemical components of the vanadium-aluminum alloy, the vanadium-aluminum alloy is compact and uniform and has no loose pores because the porous vanadium-aluminum alloy can cause large component deviation at different parts so as to influence the titanium alloy structure.
The porosity of the vanadium-aluminum alloy obtained by the technological method for reducing the internal porosity of the vanadium-aluminum alloy disclosed in the prior art CN201910406578.X is less than or equal to 23%, the porosity is still higher, the high-quality preparation requirement of titanium alloy smelting is difficult to meet, and the preparation method of the high-density vanadium-aluminum alloy is provided for solving the technical problem.
Disclosure of Invention
In order to solve the technical problems in the prior art, the invention provides a preparation method of a high-density vanadium-aluminum alloy.
In order to achieve the above object, the embodiment of the present invention provides the following technical solutions:
in a first aspect, in one embodiment provided by the present invention, a method for preparing a high-density vanadium-aluminum alloy is provided, the method comprising the steps of:
s1, mixing vanadium pentoxide, aluminum powder and lime according to a preset proportion according to a smelting space of a smelting furnace to obtain a mixture;
wherein, the weight proportion of the vanadium pentoxide, the aluminum powder and the lime in the mixture is as follows: 900-1100:700-900:10-100;
s2, adding the mixture into a smelting space of a smelting furnace for smelting;
s3, standing after smelting is completed, and disassembling the furnace body after the temperature in the smelting furnace is less than 100 ℃, separating the obtained alloy cake from slag, and removing slag attached to the surface of the alloy.
As a further scheme of the invention, after S3 smelting is completed, standing is carried out, the furnace body is disassembled after the temperature in the smelting furnace is less than 100 ℃, the obtained alloy cake is separated from slag, and the slag attached to the surface of the alloy cake is removed, and then the method further comprises the following steps:
and (3) finishing, sand blasting, crushing and screening the alloy cake to obtain an alloy finished product.
As a further scheme of the invention, the vanadium pentoxide is flaky, and the purity is more than or equal to 99.0; and V in vanadium pentoxide 5 The ratio is more than or equal to 95 percent.
As a further aspect of the present invention, the vanadium pentoxide has a bulk of <3mm.
As a further scheme of the invention, the purity of the aluminum powder is more than or equal to 99.7 percent, and the granularity of the aluminum powder is less than or equal to 2mm.
As a further scheme of the invention, the purity of the lime is more than or equal to 95 percent.
As a further scheme of the invention, the height-to-diameter ratio of the alloy cake is 0.5-0.65.
As a further scheme of the invention, the smelting furnace comprises an upper ring shell, a middle ring shell, a base shell and a reaction and solidification zone working layer, wherein the middle ring shell is fixedly arranged on the base shell, the upper ring shell is fixedly arranged on the middle ring shell, an upper ring permanent layer is arranged in the upper ring shell, a middle ring permanent layer is arranged in the middle ring shell, the base permanent layer is arranged in the base shell, the reaction and solidification zone working layer is barrel-shaped and is arranged on the base permanent layer, a second working layer is further arranged outside the reaction and solidification zone working layer, and the second working layer is attached to the middle ring permanent layer.
As a further scheme of the invention, the upper ring permanent layer, the middle ring permanent layer and the base permanent layer are made of refractory materials.
As a further scheme of the invention, a connecting working layer is arranged between the first working layer and the second working layer, the outer edge of the connecting working layer is abutted against the inner side of the first working layer, and the lower edge of the connecting working layer is abutted against the upper part of the second working layer.
The technical scheme provided by the invention has the following beneficial effects:
the invention provides a preparation method of a high-density vanadium-aluminum alloy, which comprises the following steps of S1, mixing vanadium pentoxide, aluminum powder and lime according to a preset proportion according to a smelting space of a smelting furnace to obtain a mixture; wherein, the weight proportion of the vanadium pentoxide, the aluminum powder and the lime in the mixture is as follows: 900-1100:700-900:10-100; s2, adding the mixture into a smelting space of a smelting furnace for smelting; s3, standing after smelting is completed, and disassembling the furnace body after the temperature in the smelting furnace is less than 100 ℃, separating the obtained alloy cake from slag, and removing slag attached to the surface of the alloy. The invention prepares the high-density measurement vanadium-aluminum alloy by controlling a plurality of technological processes of raw material proportioning, mixing, smelting, furnace body preparation, cooling and the like and adopting a one-step smelting method to prepare the high-density measurement vanadium-aluminum alloy, thereby realizing low-cost and high-quality production of the high-density vanadium-aluminum alloy, wherein the porosity of the obtained vanadium-aluminum alloy is less than 1.5 percent.
These and other aspects of the invention will be more readily apparent from the following description of the embodiments. It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention as claimed.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are necessary for the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention and that other embodiments may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of a method for preparing a high-density vanadium-aluminum alloy according to one embodiment of the invention.
Fig. 2 is a schematic structural diagram of a smelting furnace in a method for preparing a high-density vanadium-aluminum alloy according to an embodiment of the invention.
In the figure: 1-upper ring shell, 2-upper ring permanent layer, 3-middle ring shell, 4-middle ring permanent layer, 5-base shell, 6-base permanent layer, 7-second working layer, 8-connection working layer, 9-first working layer, 10 reaction and solidification zone working layer and 11-alloy solidification zone.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The flow diagrams depicted in the figures are merely illustrative and not necessarily all of the elements and operations/steps are included or performed in the order described. For example, some operations/steps may be further divided, combined, or partially combined, so that the order of actual execution may be changed according to actual situations.
Referring to fig. 1, the invention provides a preparation method of a high-density vanadium-aluminum alloy, which comprises the following steps:
s1, mixing vanadium pentoxide, aluminum powder and lime according to a preset proportion according to a smelting space of a smelting furnace to obtain a mixture;
wherein, the weight proportion of the vanadium pentoxide, the aluminum powder and the lime in the mixture is as follows: 900-1100:700-900:10-100.
The vanadium pentoxide is flaky, and the purity is more than or equal to 99.0; and V in vanadium pentoxide 5 The ratio is more than or equal to 95 percent.
The blocking degree of the vanadium pentoxide is less than 3mm.
The purity of the aluminum powder is more than or equal to 99.7 percent.
The granularity of the aluminum powder is less than or equal to 2mm.
The purity of the lime is more than or equal to 95 percent.
By V 5 The purpose of the high-ratio and small-granularity aluminum powder is to enable the furnace burden to rapidly and stably react, the reaction completion degree is 100%, and the purpose of adding lime is to reduce the melting point of slag and improve the volume compensation when the alloy is solidified.
Specifically, the vanadium pentoxide, aluminum powder and lime can be added into a mixer for mixing, and the mixing time is not less than 10min, so that the mixing effect is ensured.
The mixture can also comprise the same-grade defective alloy cold charge.
S2, adding the mixture into a smelting space of a smelting furnace for smelting;
s3, standing after smelting is completed, disassembling the furnace body after the temperature in the smelting furnace is less than 100 ℃, separating the obtained alloy cake from slag, and removing slag attached to the surface of the alloy;
s3, standing after smelting is finished, and disassembling the furnace body after the temperature in the smelting furnace is less than 100 ℃, separating the obtained alloy cake from slag, and removing slag attached to the surface of the alloy cake, wherein the method further comprises the following steps of:
and cooling the alloy cake by adopting air cooling and water cooling.
The ratio of the height to the diameter of the alloy cake is approximately 0.5-0.65. Preferably, the alloy cake has an aspect ratio of 0.618. Thus, the ratio of golden section is the ratio of alloy ingot alloy with the best crystal form and the lowest product defect.
Standing after S3 smelting is completed, disassembling the furnace body after the temperature in the smelting furnace is less than 100 ℃, separating the obtained alloy cake from slag, removing slag attached to the surface of the alloy cake, and further comprising the following steps:
and (3) finishing, sand blasting, crushing and screening the alloy cake to obtain an alloy finished product.
The method comprises the steps of finishing and removing the defect part on the surface of an alloy cake, and then blasting sand to remove a surface oxide film; and (3) entering a crushing and screening system, sorting by manpower or a machine, removing alloy particles with residual oxide films, and finally obtaining the high-density vanadium-aluminum alloy finished product required by a user.
Referring to fig. 2, in the embodiment of the present invention, the smelting furnace includes an upper ring shell 1, a middle ring shell 3, a base shell 5, and a reaction and solidification zone working layer 10, where the middle ring shell 3 is fixedly installed on the base shell 5, the upper ring shell 1 is fixedly installed on the middle ring shell 3, an upper ring permanent layer 2 is provided inside the upper ring shell 1, a middle ring permanent layer 4 is provided inside the middle ring shell 3, a base permanent layer 6 is provided inside the base shell 5, the reaction and solidification zone working layer 10 is in a barrel shape and is disposed on the base permanent layer 6, a second working layer 7 is further provided outside the reaction and solidification zone working layer 10, and the second working layer 7 is attached to the middle ring permanent layer 4.
Inside the reaction and solidification zone working layer 10 is an alloy solidification zone 11.
The upper ring shell 1, the middle ring shell 3 and the base shell 5 are made of metal.
The upper ring permanent layer 2, the middle ring permanent layer 4 and the base permanent layer 6 are made of refractory materials.
The base permanent layer 6 is built by magnesia carbon bricks, graphite bricks or magnesia bricks.
The upper ring permanent layer 2 and the middle ring permanent layer 4 are cast or pressed by adopting magnesium or corundum unshaped materials.
The diameter-height ratio of the alloy solidification region 11 is about 0.5-0.65. Preferably, the diameter-to-height ratio of the alloy solidification region 11 is 0.618.
The thickness of the reaction and solidification area working layer 10 is 50-150mm, and the reaction and solidification area working layer 10 is filled with white corundum powder or fused magnesia powder with the purity of more than 99.0% and less than 1 mm. The reaction and solidification area working layer 10 is fixed by a mould coiled by aluminum foil and is put on a compaction table to be jolted for more than 30 minutes, so that the working layer is compact and tight, and the residual air of the working layer is reduced as much as possible.
The white corundum powder or the fused magnesia powder is baked at 400 ℃ for more than 10 hours, so that the drying of the working layer refractory material is ensured, and the moisture is less than or equal to 0.1 percent.
The first working layer 9 is disposed on the second working layer 7, and is attached to the upper permanent layer 2 and the middle permanent layer 4.
Still be provided with between first working layer 9 and the second working layer 7 and link up working layer 8, link up working layer 8 outward flange conflict is inboard at first working layer 9, link up working layer 8 lower limb conflict in second working layer 7 upper portion, link up working layer 8 cross-section and be triangle-shaped design.
In the smelting process, adding the mixture into a furnace body, raking the materials in the furnace, paving an ignition material on the upper surface, wherein the area of the ignition material, which is paved, is required to be less than or equal to 300mm in diameter, so that the quick and full reaction of the furnace burden is facilitated; igniting the ignition material, enabling the furnace burden to rapidly react, enabling the whole furnace burden to react completely in 90 seconds, enabling the high temperature generated by smelting reaction to rapidly sinter the inner surface of the working layer into a compact thin layer, enabling alloy high-temperature melt generated by smelting to be deposited and solidified at the bottom of the furnace body, enabling the melting point of slag added with lime to be low due to volume shrinkage when the alloy is solidified, keeping the lower part of the alloy in a liquid state when the alloy is solidified, ensuring that the upper surface has enough pressure when the alloy is solidified, and avoiding the phenomenon that the alloy is solidified and crystallized to be not compact due to negative pressure on the contact surface of slag and gold.
Example 1
A preparation method of a high-density vanadium-aluminum alloy comprises the following steps:
s1, mixing vanadium pentoxide, aluminum powder and lime according to a preset proportion according to a smelting space of a smelting furnace to obtain a mixture;
wherein, the weight of the vanadium pentoxide, the aluminum powder and the lime in the mixture is as follows: 900kg, 700kg and 10kg.
The vanadium pentoxide is flaky, and the purity is more than or equal to 99.0; and V in vanadium pentoxide 5 The ratio is more than or equal to 95 percent.
The blocking degree of the vanadium pentoxide is less than 3mm.
The purity of the aluminum powder is more than or equal to 99.7 percent.
The granularity of the aluminum powder is less than or equal to 2mm
The purity of the lime is more than or equal to 95 percent.
By V 5 The purpose of the high-ratio and small-granularity aluminum powder is to enable the furnace burden to rapidly and stably react, the reaction completion degree is 100%, and the purpose of adding lime is to reduce the melting point of slag and improve the volume compensation when the alloy is solidified.
Specifically, the vanadium pentoxide, aluminum powder and lime can be added into a mixer for mixing, and the mixing time is not less than 10min, so that the mixing effect is ensured.
The mixture can also comprise the same-grade defective alloy cold charge.
S2, adding the mixture into a smelting space of a smelting furnace for smelting;
s3, standing after smelting is completed, disassembling the furnace body after the temperature in the smelting furnace is less than 100 ℃, separating the obtained alloy cake from slag, and removing slag attached to the surface of the alloy;
s3, standing after smelting is finished, and disassembling the furnace body after the temperature in the smelting furnace is less than 100 ℃, separating the obtained alloy cake from slag, and removing slag attached to the surface of the alloy cake, wherein the method further comprises the following steps of:
and cooling the alloy cake by adopting air cooling and water cooling.
The ratio of the height to the diameter of the alloy cake is approximately 0.5-0.65. Preferably, the alloy cake has an aspect ratio of 0.618. Thus, the ratio of golden section is the ratio of alloy ingot alloy with the best crystal form and the lowest product defect.
Standing after S3 smelting is completed, disassembling the furnace body after the temperature in the smelting furnace is less than 100 ℃, separating the obtained alloy cake from slag, removing slag attached to the surface of the alloy cake, and further comprising the following steps:
and (3) finishing, sand blasting, crushing and screening the alloy cake to obtain an alloy finished product.
Example 2
A preparation method of a high-density vanadium-aluminum alloy comprises the following steps:
s1, mixing vanadium pentoxide, aluminum powder and lime according to a preset proportion according to a smelting space of a smelting furnace to obtain a mixture;
wherein, the weight of the vanadium pentoxide, the aluminum powder and the lime in the mixture is as follows: 1100kg, 900kg and 100kg.
The vanadium pentoxide is flaky, and the purity is more than or equal to 99.0; and V in vanadium pentoxide 5 The ratio is more than or equal to 95 percent.
The blocking degree of the vanadium pentoxide is less than 3mm.
The purity of the aluminum powder is more than or equal to 99.7 percent.
The granularity of the aluminum powder is less than or equal to 2mm
The purity of the lime is more than or equal to 95 percent.
By V 5 The purpose of the high-ratio and small-granularity aluminum powder is to enable the furnace burden to rapidly and stably react, the reaction completion degree is 100%, and the purpose of adding lime is to reduce the melting point of slag and improve the volume compensation when the alloy is solidified.
Specifically, the vanadium pentoxide, aluminum powder and lime can be added into a mixer for mixing, and the mixing time is not less than 10min, so that the mixing effect is ensured.
The mixture can also comprise the same-grade defective alloy cold charge.
S2, adding the mixture into a smelting space of a smelting furnace for smelting;
s3, standing after smelting is completed, disassembling the furnace body after the temperature in the smelting furnace is less than 100 ℃, separating the obtained alloy cake from slag, and removing slag attached to the surface of the alloy;
s3, standing after smelting is finished, and disassembling the furnace body after the temperature in the smelting furnace is less than 100 ℃, separating the obtained alloy cake from slag, and removing slag attached to the surface of the alloy cake, wherein the method further comprises the following steps of:
and cooling the alloy cake by adopting air cooling and water cooling.
The ratio of the height to the diameter of the alloy cake is approximately 0.5-0.65. Preferably, the alloy cake has an aspect ratio of 0.618. Thus, the ratio of golden section is the ratio of alloy ingot alloy with the best crystal form and the lowest product defect.
Standing after S3 smelting is completed, disassembling the furnace body after the temperature in the smelting furnace is less than 100 ℃, separating the obtained alloy cake from slag, removing slag attached to the surface of the alloy cake, and further comprising the following steps:
and (3) finishing, sand blasting, crushing and screening the alloy cake to obtain an alloy finished product.
Example 3
A preparation method of a high-density vanadium-aluminum alloy comprises the following steps:
s1, mixing vanadium pentoxide, aluminum powder and lime according to a preset proportion according to a smelting space of a smelting furnace to obtain a mixture;
wherein, the weight of the vanadium pentoxide, the aluminum powder and the lime in the mixture is as follows: 1050kg, 850kg and 30-80kg.
The vanadium pentoxide is flaky, and the purity is more than or equal to 99.0; and V in vanadium pentoxide 5 The ratio is more than or equal to 95 percent.
The blocking degree of the vanadium pentoxide is less than 3mm.
The purity of the aluminum powder is more than or equal to 99.7 percent.
The granularity of the aluminum powder is less than or equal to 2mm
The purity of the lime is more than or equal to 95 percent.
By V 5 The purpose of the high-ratio and small-granularity aluminum powder is to enable the furnace burden to rapidly and stably react, the reaction completion degree is 100%, and the purpose of adding lime is to reduce the melting point of slag and improve the volume compensation when the alloy is solidified.
Specifically, the vanadium pentoxide, aluminum powder and lime can be added into a mixer for mixing, and the mixing time is not less than 10min, so that the mixing effect is ensured.
The mixture can also comprise the same-grade defective alloy cold charge.
S2, adding the mixture into a smelting space of a smelting furnace for smelting;
s3, standing after smelting is completed, disassembling the furnace body after the temperature in the smelting furnace is less than 100 ℃, separating the obtained alloy cake from slag, and removing slag attached to the surface of the alloy;
s3, standing after smelting is finished, and disassembling the furnace body after the temperature in the smelting furnace is less than 100 ℃, separating the obtained alloy cake from slag, and removing slag attached to the surface of the alloy cake, wherein the method further comprises the following steps of:
and cooling the alloy cake by adopting air cooling and water cooling.
The ratio of the height to the diameter of the alloy cake is approximately 0.61.
Standing after S3 smelting is completed, disassembling the furnace body after the temperature in the smelting furnace is less than 100 ℃, separating the obtained alloy cake from slag, removing slag attached to the surface of the alloy cake, and further comprising the following steps:
and (3) finishing, sand blasting, crushing and screening the alloy cake to obtain an alloy finished product.
Example 4
A preparation method of a high-density vanadium-aluminum alloy comprises the following steps:
s1, mixing vanadium pentoxide, aluminum powder and lime according to a preset proportion according to a smelting space of a smelting furnace to obtain a mixture;
wherein, the weight proportion of the vanadium pentoxide, the aluminum powder and the lime in the mixture is as follows: 950kg, 750kg and 30kg.
The vanadium pentoxide is flaky, and the purity is more than or equal to 99.0; and V in vanadium pentoxide 5 The ratio is more than or equal to 95 percent.
The blocking degree of the vanadium pentoxide is less than 3mm.
The purity of the aluminum powder is more than or equal to 99.7 percent.
The granularity of the aluminum powder is less than or equal to 2mm
The purity of the lime is more than or equal to 95 percent.
By V 5 The purpose of the high-ratio and small-granularity aluminum powder is to enable the furnace burden to rapidly and stably react, the reaction completion degree is 100%, and the purpose of adding lime is to reduce the melting point of slag and improve the volume compensation when the alloy is solidified.
Specifically, the vanadium pentoxide, aluminum powder and lime can be added into a mixer for mixing, and the mixing time is not less than 10min, so that the mixing effect is ensured.
The mixture can also comprise the same-grade defective alloy cold charge.
S2, adding the mixture into a smelting space of a smelting furnace for smelting;
s3, standing after smelting is completed, disassembling the furnace body after the temperature in the smelting furnace is less than 100 ℃, separating the obtained alloy cake from slag, and removing slag attached to the surface of the alloy;
s3, standing after smelting is finished, and disassembling the furnace body after the temperature in the smelting furnace is less than 100 ℃, separating the obtained alloy cake from slag, and removing slag attached to the surface of the alloy cake, wherein the method further comprises the following steps of:
and cooling the alloy cake by adopting air cooling and water cooling.
The ratio of the height to the diameter of the alloy cake is approximately 0.6.
Standing after S3 smelting is completed, disassembling the furnace body after the temperature in the smelting furnace is less than 100 ℃, separating the obtained alloy cake from slag, removing slag attached to the surface of the alloy cake, and further comprising the following steps:
and (3) finishing, sand blasting, crushing and screening the alloy cake to obtain an alloy finished product.
Example 5
A preparation method of a high-density vanadium-aluminum alloy comprises the following steps:
s1, mixing vanadium pentoxide, aluminum powder and lime according to a preset proportion according to a smelting space of a smelting furnace to obtain a mixture;
wherein, the weight of vanadium pentoxide, aluminum powder and lime in the mixture are respectively as follows: 1000kg, 800kg and 50kg.
The vanadium pentoxide is flaky, and the purity is more than or equal to 99.0; and V in vanadium pentoxide 5 The ratio is more than or equal to 95 percent.
The blocking degree of the vanadium pentoxide is less than 3mm.
The purity of the aluminum powder is more than or equal to 99.7 percent.
The granularity of the aluminum powder is less than or equal to 2mm
The purity of the lime is more than or equal to 95 percent.
By V 5 The purpose of the high-ratio and small-granularity aluminum powder is to enable the furnace burden to rapidly and stably react, the reaction completion degree is 100%, and the purpose of adding lime is to reduce the melting point of slag and improve the volume compensation when the alloy is solidified.
Specifically, the vanadium pentoxide, aluminum powder and lime can be added into a mixer for mixing, and the mixing time is not less than 10min, so that the mixing effect is ensured.
The mixture can also comprise the same-grade defective alloy cold charge.
S2, adding the mixture into a smelting space of a smelting furnace for smelting;
s3, standing after smelting is completed, disassembling the furnace body after the temperature in the smelting furnace is less than 100 ℃, separating the obtained alloy cake from slag, and removing slag attached to the surface of the alloy;
s3, standing after smelting is finished, and disassembling the furnace body after the temperature in the smelting furnace is less than 100 ℃, separating the obtained alloy cake from slag, and removing slag attached to the surface of the alloy cake, wherein the method further comprises the following steps of:
and cooling the alloy cake by adopting air cooling and water cooling.
The ratio of the height to the diameter of the alloy cake is 0.618. Thus, the ratio of golden section is the ratio of alloy ingot alloy with the best crystal form and the lowest product defect.
Standing after S3 smelting is completed, disassembling the furnace body after the temperature in the smelting furnace is less than 100 ℃, separating the obtained alloy cake from slag, removing slag attached to the surface of the alloy cake, and further comprising the following steps:
and (3) finishing, sand blasting, crushing and screening the alloy cake to obtain an alloy finished product.
Example 6
(1) 1000kg of 99% flaky vanadium pentoxide (V5+ accounts for 95.3%), 880kg of 99.75% aluminum powder (< 2 mm), 10kg of lime with CaO content of 95% and 20kg of the same-grade defective alloy cold material, and after accurate blending, fully mixing for more than 8min by a mixer.
(2) Preparing a smelting furnace according to the requirements of FIG. 1, and drying the refractory materials of a permanent layer and a working layer of the furnace;
(3) The prepared furnace burden is put into a smelting furnace, ignition materials are paved, conveyed into a smelting reaction chamber, and ignited for smelting. Standing, naturally cooling to below 50 ℃, removing the furnace, and separating slag and alloy to obtain 890.5kg of AlV55 alloy which is perfect in crystallization, compact, bright, free of air holes, free of slag inclusion and easy to break.
(4) The porosity of the alloy ingot is 0.5%, the alloy is finished, sandblasted, crushed and screened, and the AlV55 alloy finished product is obtained through manual sorting and packaging;
(5) The components of the sampling test AlV55 alloy are respectively as follows: v= 57.96%, al= 41.50%, si=0.11%, c=0.029%, fe=0.13%, o=0.022%.
Example 7
(1) 1000kg of 99% powdery vanadium pentoxide (V5+ accounts for 95.6%), 780kg of 99.72% aluminum powder (< 2 mm), 160kg of 100kg of lime with CaO content of 95% and the same grade of defective alloy cold material, and fully mixing for more than 8min by a mixer after accurate mixing.
(2) Preparing a smelting furnace according to the requirements of FIG. 1, and drying the refractory materials of a permanent layer and a working layer of the furnace;
(3) The prepared furnace burden is put into a smelting furnace, ignition materials are paved, conveyed into a smelting reaction chamber, and ignited for smelting. Standing, naturally cooling to below 50 ℃, removing the furnace, and separating slag and alloy to obtain 980.3kg of AlV65 alloy which is perfect in crystallization, compact, bright, free of air holes, free of slag inclusion and easy to crush.
(4) The porosity of the alloy ingot is 0.4%, the alloy is finished, sandblasted, crushed and screened, and the AlV65 alloy finished product is obtained through manual sorting and packaging;
(5) Sample assay AlV65 alloy composition: v= 66.02%, al= 33.39%, si=0.12%, c=0.033%, fe=0.12%, o=0.031%.
While the preferred embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Claims (10)
1. The preparation method of the high-density vanadium-aluminum alloy is characterized by comprising the following steps of:
s1, mixing vanadium pentoxide, aluminum powder and lime according to a preset proportion according to a smelting space of a smelting furnace to obtain a mixture;
wherein, the weight proportion of the vanadium pentoxide, the aluminum powder and the lime in the mixture is as follows: 900-1100:700-900:10-100;
s2, adding the mixture into a smelting space of a smelting furnace for smelting;
s3, standing after smelting is completed, and disassembling the furnace body after the temperature in the smelting furnace is less than 100 ℃, separating the obtained alloy cake from slag, and removing slag attached to the surface of the alloy.
2. The method for producing a high-density vanadium-aluminum alloy according to claim 1, wherein after S3 is completed, the alloy is left to stand until the temperature in the smelting furnace is less than 100 ℃, the furnace body is disassembled, the obtained alloy cake is separated from the slag, and the slag adhering to the surface of the alloy cake is removed, and the method further comprises:
and (3) finishing, sand blasting, crushing and screening the alloy cake to obtain an alloy finished product.
3. The method for preparing the high-density vanadium-aluminum alloy according to claim 1, wherein the vanadium pentoxide is sheet-shaped and has a purity of not less than 99.0; and V in vanadium pentoxide 5 The ratio is more than or equal to 95 percent.
4. A method of producing a high density vanadium-aluminium alloy according to claim 3, wherein the vanadium pentoxide has a bulk of <3mm.
5. The method for preparing the high-density vanadium-aluminum alloy according to claim 4, wherein the purity of the aluminum powder is more than or equal to 99.7 percent, and the granularity of the aluminum powder is less than or equal to 2mm.
6. The method for preparing high-density vanadium-aluminum alloy according to claim 5, wherein the purity of lime is not less than 95%.
7. The method for preparing a high-density vanadium-aluminum alloy according to claim 1, wherein the alloy cake has an aspect ratio of 0.5 to 0.65.
8. The method for preparing the high-density vanadium-aluminum alloy according to claim 1, wherein the smelting furnace comprises an upper ring shell (1), a middle ring shell (3), a base shell (5) and a reaction and solidification area working layer (10), wherein the middle ring shell (3) is fixedly arranged on the base shell (5), the upper ring shell (1) is fixedly arranged on the middle ring shell (3), an upper ring permanent layer (2) is arranged in the upper ring shell (1), a middle ring permanent layer (4) is arranged in the middle ring shell (3), a base permanent layer (6) is arranged in the base shell (5), the reaction and solidification area working layer (10) is barrel-shaped and is arranged on the base permanent layer (6), a second working layer (7) is further arranged on the outer side of the reaction and solidification area working layer (10), and the second working layer (7) is attached to the middle ring permanent layer (4).
9. The method for preparing the high-density vanadium-aluminum alloy according to claim 8, wherein the upper permanent ring layer (2), the middle permanent ring layer (4) and the base permanent layer (6) are made of refractory materials.
10. The method for preparing the high-density vanadium-aluminum alloy according to claim 8, wherein a connecting working layer (8) is further arranged between the first working layer (9) and the second working layer (7), the outer edge of the connecting working layer (8) is abutted against the inner side of the first working layer (9), and the lower edge of the connecting working layer (8) is abutted against the upper portion of the second working layer (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311143134.4A CN117144170A (en) | 2023-09-05 | 2023-09-05 | Preparation method of high-density vanadium-aluminum alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311143134.4A CN117144170A (en) | 2023-09-05 | 2023-09-05 | Preparation method of high-density vanadium-aluminum alloy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117144170A true CN117144170A (en) | 2023-12-01 |
Family
ID=88902212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311143134.4A Pending CN117144170A (en) | 2023-09-05 | 2023-09-05 | Preparation method of high-density vanadium-aluminum alloy |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117144170A (en) |
-
2023
- 2023-09-05 CN CN202311143134.4A patent/CN117144170A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110592453B (en) | Production method of low-oxygen-content vanadium-aluminum alloy | |
| CN108788168B (en) | High-entropy alloy powder with low nitrogen content and preparation method and application thereof | |
| US4040845A (en) | Ceramic composition and crucibles and molds formed therefrom | |
| CN107109542B (en) | For producing low nitrogen, the chromium substantially free of nitride and the method and gained chromium and nickel-base alloy that add containing chromium the nickel-base alloy of niobium | |
| AU2020203208B9 (en) | Oxide ore smelting method | |
| CN110373558B (en) | Method for improving quality of vanadium-aluminum alloy product smelted by aluminothermic process | |
| CN114015874B (en) | Production method of high-quality AlV55 alloy | |
| WO2021169074A1 (en) | Iron-aluminum alloy and preparation method therefor | |
| US4264546A (en) | Method for producing silicon nitride molded bodies by means of pseudoisostatic hot pressing | |
| CN117144170A (en) | Preparation method of high-density vanadium-aluminum alloy | |
| WO2021143013A1 (en) | Manganese aluminum alloy and preparation method therefor | |
| CN102330007B (en) | Preparation method and production system of aircraft grade vanadium-aluminum alloy | |
| CN112680647A (en) | Production method of vanadium-molybdenum-chromium-iron aluminum alloy | |
| US3340076A (en) | Fused refractory castings | |
| CN113430398B (en) | JCr 98-grade metallic chromium containing vanadium element and preparation method thereof | |
| CN111910092A (en) | Preparation method of aluminum-niobium-boron intermediate alloy and aluminum-niobium-boron intermediate alloy | |
| US20230094357A1 (en) | Silicon-aluminum alloy and preparation method therefor | |
| US2261196A (en) | Process for making metal powder | |
| RU2810143C1 (en) | Al-Ti-B LIGATURE PRECURSOR | |
| CN110358957A (en) | A kind of nickel vanadium intermediate alloy and preparation method thereof | |
| CN114686717B (en) | Preparation method of high-entropy alloy | |
| CN115319034B (en) | Vanadium iron alloy casting ingot mould and preparation method thereof | |
| CN111822722B (en) | TiAl/TiB for additive manufacturing 2 Preparation method of powder material | |
| JPH03193842A (en) | Ti-al matrix composite and its manufacture | |
| JP2599729B2 (en) | Ingot making method for alloy articles |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |