CN115011795A - Method for controlling AlV55 alloy nitride film at front end - Google Patents

Method for controlling AlV55 alloy nitride film at front end Download PDF

Info

Publication number
CN115011795A
CN115011795A CN202210817139.XA CN202210817139A CN115011795A CN 115011795 A CN115011795 A CN 115011795A CN 202210817139 A CN202210817139 A CN 202210817139A CN 115011795 A CN115011795 A CN 115011795A
Authority
CN
China
Prior art keywords
nitride film
reactor
alv55 alloy
alv55
furnace
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
Application number
CN202210817139.XA
Other languages
Chinese (zh)
Inventor
陈海军
尹丹凤
高雷章
师启华
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pangang Group Panzhihua Iron and Steel Research Institute Co Ltd
Original Assignee
Pangang Group Panzhihua Iron and Steel Research Institute Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Pangang Group Panzhihua Iron and Steel Research Institute Co Ltd filed Critical Pangang Group Panzhihua Iron and Steel Research Institute Co Ltd
Priority to CN202210817139.XA priority Critical patent/CN115011795A/en
Publication of CN115011795A publication Critical patent/CN115011795A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • 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
    • 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
    • C22B5/12—Dry methods smelting of sulfides or formation of mattes by gases
    • 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
    • Y02P10/25—Process efficiency

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)

Abstract

The invention relates to a method for controlling an AlV55 alloy nitride film at the front end, which comprises the following steps: 1) placing the reactor on a smelting platform, placing the reactor in a closed space, and pouring mixed furnace charge containing V 2 O 5 And metallic Al; 2) compressing the furnace charge to reduce the volume by 20-26%; 3) igniting an igniter to trigger reaction, and carrying out aluminothermic reduction smelting; 4) in the smelting process, introducing inert gas to the upper part of a molten pool of the reactor for purging; and 5) after cooling, disassembling the furnace and crushing to obtain an AlV55 alloy product. The method reduces the particle clearance and discharges nitrogen by compressing the furnace charge before triggering the reaction, thereby reducing the formation of a nitride film and effectively reducing the product ratio of the nitride film.

Description

Method for controlling AlV55 alloy nitride film at front end
Technical Field
The invention relates to the field of metallurgy, in particular to a method for controlling an AlV55 alloy nitride film in a front end mode.
Background
The vanadium-aluminum alloy is used as an intermediate alloy for manufacturing titanium alloy and high-temperature alloy and an element additive of certain special alloys, is widely used as a high-grade alloy material in the field of aerospace, has high hardness and elasticity, is seawater-resistant and light, and is used for manufacturing seaplanes and water gliders.
With the rapid development of the economy of China and the continuous improvement of the consumption level of people, the national defense strength and the space navigation strength of China are obviously enhanced, and the titanium alloy applied to the fields of civil industry and aerospace has a great growth tendency. At present, the Ti-6Al-4V alloy is mainly prepared from the AlV55 alloy in China, the market demand is very large, but the AlV55 alloy nitride film prepared by the traditional method is generally higher in proportion, and a practical control method is not available.
Thus, it would be desirable to devise a low cost, high efficiency, high quality method of front end control AlV55 alloy nitride films.
Disclosure of Invention
In view of the defects of the prior art, the main object of the present invention is to provide a method for front-end controlling AlV55 alloy nitride film, which reduces the grain gap and discharges nitrogen gas by compressing the charge before triggering the reaction, thereby reducing the formation of nitride film and effectively reducing the product ratio of nitride film.
In order to solve the technical problems, the invention adopts the following technical scheme:
according to the invention, the method for controlling the AlV55 alloy nitride film at the front end comprises the following steps:
1) placing the reactor on a smelting platform, placing the reactor in a closed space, and pouring mixed furnace charge containing V 2 O 5 And metallic Al;
2) compressing the furnace charge to reduce the volume by 20-26%;
3) igniting an igniter to trigger reaction, and carrying out aluminothermic reduction smelting;
4) in the smelting process, introducing inert gas to the upper part of a molten pool of the reactor for purging; and
5) and after cooling, disassembling the furnace and crushing to obtain an AlV55 alloy product.
According to one embodiment of the invention, in step 1), V 2 O 5 The granularity is less than or equal to 120 meshes, the granularity of the metal Al is less than or equal to 80 meshes, and the material mixing time is 20-30 min.
According to one embodiment of the invention, in step 2), the charge is compacted using a compactor.
According to one embodiment of the invention, in step 2), the charge is compacted in layers using a tamper.
According to one embodiment of the invention, in step 3), the ignition agent is a magnesium tape.
According to one embodiment of the invention, step 4) comprises detecting a furnace temperature of the reactor and stopping the purging in response to the furnace temperature reaching 1100 ℃ to 1300 ℃.
According to an embodiment of the present invention, in the step 4), the inert gas includes at least one of argon, helium and neon.
By adopting the technical scheme, compared with the prior art, the invention has the following advantages:
(1) according to the method, the furnace burden is compressed until the volume is reduced by 20-26% before the reaction is triggered, so that the particle clearance is reduced, nitrogen is discharged, and the formation of a nitride film is effectively reduced;
(2) according to the method, purging is started immediately after the reaction is finished, and the timing for stopping purging is determined in response to the temperature of the hearth of the reactor, so that a nitride film can not be generated after the purging is stopped, and the effective utilization of inert gas can be realized to the greatest extent;
(3) the method provided by the invention is simple to operate, can obtain the AlV55 alloy product with the nitride film product ratio remarkably reduced without investing additional equipment cost, and has remarkable effect.
Drawings
Fig. 1 shows a process flow diagram of a method for front-end control of AlV55 alloy nitride films in accordance with the present invention.
Detailed Description
It should be understood that the embodiments of the invention shown in the exemplary embodiments are illustrative only. Although only a few embodiments of the present invention have been described in detail above, those skilled in the art will readily appreciate that many modifications are possible without materially departing from the teachings of the present subject matter. Accordingly, all such modifications are intended to be included within the scope of this invention. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and parameters and the like of the following exemplary embodiments without departing from the spirit of the present invention.
As shown in fig. 1, the method for front-end controlling AlV55 alloy nitride film according to the present invention generally comprises the following steps:
step S1: placing the reactor on a smelting platform, placing the reactor in a closed space, and pouring mixed furnace charge containing V 2 O 5 And metallic Al;
step S2: compressing the furnace charge to reduce the volume by 20-26%;
step S3: igniting an igniter to trigger reaction, and carrying out aluminothermic reduction smelting;
step S4: in the smelting process, introducing inert gas to the upper part of a molten pool of the reactor for purging; and
step S5: and after cooling, disassembling the furnace and crushing to obtain an AlV55 alloy product.
Specifically, in step S1, V 2 O 5 The granularity is less than or equal to 120 meshes, the granularity of the metal Al is less than or equal to 80 meshes, and the mixing time is 20-30 min, so that the raw materials are uniformly mixed and the reaction is fully carried out.
In step S2, the charge that has been filled into the reactor may be tamped using a tamping machine to achieve compression of the charge. In a preferred embodiment of the invention, it is possible to ensure that the charge is uniformly and sufficiently compacted by means of layer-wise compaction. For example, a part of the burden is filled first, and the part of the burden is tamped and compressed by a tamping machine; then, filling a part of furnace burden above the compacted furnace burden, and tamping and compressing the furnace burden by using a tamping machine again; and circulating the operations until the furnace burden is completely filled into the reactor and compacted. Through compression, air among particles in the furnace burden is extruded out, so that the generation of a nitride film in an AlV55 alloy cake in the reaction process and in a high-temperature environment after the reaction is finished can be effectively avoided. Therefore, the nitride doping content of the AlV55 alloy cake is obviously reduced, and the proportion of the product of the nitride-containing film obtained after the AlV55 alloy cake is crushed to the total product, namely the product rate of the nitride film, is also obviously reduced.
In step S4, the inert gas may include at least one of argon, helium, and neon. This step may also include detecting a furnace temperature of the reactor and stopping the purging in response to the furnace temperature reaching 1100 ℃ to 1300 ℃. Compared with the prior art that protective gas is filled into the whole reaction system when the reaction is started until the cooling is finished, on one hand, the method provided by the invention starts purging immediately after the reaction is finished and stops purging in response to the temperature of the hearth reaching a preset value, and the preset value is preferably 1100-1300 ℃, so that the purging process can be ensured to be continuously carried out in a nitride generation temperature interval, and no nitride film is generated after the purging is stopped; on the other hand, the inert gas is introduced into the upper part of the molten pool of the reactor for purging, so that the minimum amount of the inert gas can be used for carrying out the maximum heat while ensuring the air isolation. By the scheme of the invention, the effective utilization of the inert gas can be realized to the maximum extent.
The above-described preparation process of the present invention is illustrated in detail by the following detailed examples.
Example 1
V with the granularity of 120 meshes to 160 meshes is weighed 2 O 5 150kg of metal Al particles with the granularity of 80-120 meshes are totally 132.3kg of the particles are put into a charging bucket, mixed for 20min and then poured into a reactor for 3 times, and a tamper is used for respectively tamping the mixture poured into each time so as to reduce the volume of the charging material by 26 percent. And then igniting the magnesium strip to trigger reaction, starting argon purging immediately after the reaction is finished, and stopping argon purging when the temperature of the detected hearth reaches 1100 ℃. And cooling, and then disassembling the furnace and crushing to obtain an AlV55 alloy product.
The inspection shows that the product ratio of the nitride film in the obtained AlV55 alloy product is 0.1%.
Example 2
V with granularity less than or equal to 160 meshes is weighed 2 O 5 The total amount of 100kg of particles and the total amount of 87.7kg of metal Al particles with the granularity less than or equal to 120 meshes are put into a charging bucket, mixed for 25min and then poured into a reactor for 2 times, and a tamper is used for respectively tamping the mixture poured each time so as to reduce the volume of the charging material by 23 percent. And then igniting the magnesium strip to trigger reaction, starting argon purging immediately after the reaction is finished, and stopping argon purging when the temperature of the detected hearth reaches 1200 ℃. And cooling, and then disassembling the furnace and crushing to obtain an AlV55 alloy product.
The inspection shows that the product ratio of the nitride film in the obtained AlV55 alloy product is 0.15%.
Example 3
V with the granularity of 120 meshes to 160 meshes is weighed 2 O 5 200kg of particles and 176kg of metal Al particles with the granularity less than or equal to 80 meshes are loaded into a charging bucket, mixed for 30min and poured into a reactor, and a tamper is used for tamping so as to reduce the volume of the charging material by 20 percent. And then igniting the magnesium strip to trigger reaction, starting argon purging immediately after the reaction is finished, and stopping argon purging when the temperature of the detected hearth reaches 1300 ℃. And cooling, and then disassembling and crushing to obtain an AlV55 alloy product.
The inspection shows that the product ratio of the nitride film in the obtained AlV55 alloy product is 0.2%.
Comparative example 1
V with the granularity of 120 meshes to 160 meshes is weighed 2 O 5 150kg of metal Al particles with the granularity of 80-120 meshes are filled into a charging bucket, 132.3kg of the metal Al particles with the granularity of 80-120 meshes are mixed for 20min and then poured into a reactor, a magnesium tape is ignited to trigger reaction, argon purging is started immediately after the reaction is finished, and the argon purging is stopped when the temperature of a hearth is detected to reach 1100 ℃. And cooling, and then disassembling and crushing to obtain an AlV55 alloy product.
The test shows that the ratio of the nitride film product in the obtained AlV55 alloy product is 0.55%.
Comparative example 2
V with granularity less than or equal to 160 meshes is weighed 2 O 5 The total amount of the metal Al particles is 100kg, and the granularity is less than or equal to 120 meshes87.7kg of the mixture was put into a bucket and mixed for 25min before being poured into the reactor. And then igniting the magnesium strip to trigger reaction, starting argon purging immediately after the reaction is finished, and stopping argon purging when the temperature of the detected hearth reaches 1200 ℃. And cooling, and then disassembling and crushing to obtain an AlV55 alloy product.
The inspection proves that the product ratio of the nitride film in the AlV55 alloy product is 0.7%.
Comparative example 3
V with the granularity of 120 meshes to 160 meshes is weighed 2 O 5 200kg of particles and 176kg of metal Al particles with the particle size less than or equal to 80 meshes are put into a charging bucket and mixed for 30min, and then poured into a reactor. And then igniting the magnesium strip to trigger reaction, starting argon purging immediately after the reaction is finished, and stopping argon purging when the temperature of the detected hearth reaches 1300 ℃. And cooling, and then disassembling and crushing to obtain an AlV55 alloy product.
The inspection shows that the product ratio of the nitride film in the obtained AlV55 alloy product is 0.6%.
In conclusion, the method can control the product ratio of the nitride film of AlV55 within 0.2 percent, is obviously lower than the product ratio of the nitride film of the AlV55 alloy product produced by the prior method, and has wide market application prospect.
The above is an exemplary embodiment of the present disclosure, and the order of disclosure of the above embodiment of the present disclosure is only for description and does not represent the merits of the embodiment. It should be noted that the discussion of any embodiment above is exemplary only, and is not intended to intimate that the scope of the disclosure, including the claims, of embodiments of the invention is limited to those examples, and that various changes and modifications may be made without departing from the scope, as defined in the claims. The functions, steps and/or actions of the method claims in accordance with the disclosed embodiments described herein need not be performed in any particular order. Furthermore, although elements of the disclosed embodiments of the invention may be described or claimed in the singular, the plural is contemplated unless limitation to the singular is explicitly stated.
Those of ordinary skill in the art will understand that: the discussion of any embodiment above is meant to be exemplary only, and is not intended to intimate that the scope of the disclosure, including the claims, of embodiments of the invention is limited to these examples; within the idea of an embodiment of the invention, also technical features in the above embodiment or in different embodiments may be combined and there are many other variations of the different aspects of an embodiment of the invention as described above, which are not provided in detail for the sake of brevity. Therefore, any omissions, modifications, substitutions, improvements, and the like that may be made without departing from the spirit and principles of the embodiments of the present invention are intended to be included within the scope of the embodiments of the present invention.

Claims (7)

1. A method for controlling an AlV55 alloy nitride film at the front end is characterized by comprising the following steps:
1) placing the reactor on a smelting platform, placing the reactor into a closed space, and pouring mixed furnace charge, wherein the furnace charge contains V 2 O 5 And metallic Al;
2) compressing the furnace charge to reduce the volume by 20-26%;
3) igniting an igniter to trigger reaction, and carrying out aluminothermic reduction smelting;
4) in the smelting process, introducing inert gas to the upper part of a molten pool of the reactor for purging; and
5) and after cooling, disassembling the furnace and crushing to obtain an AlV55 alloy product.
2. The front-end control method for AlV55 alloy nitride film according to claim 1, wherein in step 1), V 2 O 5 The granularity is less than or equal to 120 meshes, the granularity of the metal Al is less than or equal to 80 meshes, and the material mixing time is 20-30 min.
3. The method for front-end controlling the AlV55 alloy nitride film according to claim 1, wherein in step 2), the charge material is compacted by a compactor.
4. The front-end control method for the AlV55 alloy nitride film according to claim 3, wherein in step 2), the charge material is compressed in layers by using the tamper.
5. The front-end control method for the AlV55 alloy nitride film according to claim 1, wherein in step 3), the igniter is a magnesium ribbon.
6. The front-end control method for an AlV55 alloy nitride film according to claim 1, wherein step 4) comprises detecting a furnace temperature of the reactor and stopping the purging in response to the furnace temperature reaching 1100 ℃ to 1300 ℃.
7. The front-end control method for the AlV55 alloy nitride film according to claim 6, wherein in step 4), the inert gas comprises at least one of argon, helium and neon.
CN202210817139.XA 2022-07-12 2022-07-12 Method for controlling AlV55 alloy nitride film at front end Pending CN115011795A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210817139.XA CN115011795A (en) 2022-07-12 2022-07-12 Method for controlling AlV55 alloy nitride film at front end

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210817139.XA CN115011795A (en) 2022-07-12 2022-07-12 Method for controlling AlV55 alloy nitride film at front end

Publications (1)

Publication Number Publication Date
CN115011795A true CN115011795A (en) 2022-09-06

Family

ID=83080136

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210817139.XA Pending CN115011795A (en) 2022-07-12 2022-07-12 Method for controlling AlV55 alloy nitride film at front end

Country Status (1)

Country Link
CN (1) CN115011795A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111549224A (en) * 2020-06-10 2020-08-18 攀钢集团研究院有限公司 Method for improving quality of AlV55 alloy finished product
CN114015874A (en) * 2021-09-24 2022-02-08 攀钢集团攀枝花钢铁研究院有限公司 Production method of high-quality AlV55 alloy

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111549224A (en) * 2020-06-10 2020-08-18 攀钢集团研究院有限公司 Method for improving quality of AlV55 alloy finished product
CN114015874A (en) * 2021-09-24 2022-02-08 攀钢集团攀枝花钢铁研究院有限公司 Production method of high-quality AlV55 alloy

Similar Documents

Publication Publication Date Title
CN109226748B (en) Preparation method of composite tungsten electrode material
CN110592453B (en) Production method of low-oxygen-content vanadium-aluminum alloy
CN102381882B (en) Zirconium oxide refractory with homogeneous micro-crystallized structure and preparation method thereof
CN112680643B (en) Rare earth Y-containing self-foaming porous magnesium alloy and preparation method thereof
CN112593132B (en) High-strength semi-solid two-phase die-casting magnesium-lithium alloy and preparation method thereof
WO2021102922A1 (en) Preparation method for high-strength soluble magnesium alloy material
CN105219992B (en) Method for preparing AlV 55 intermediate alloy
CN115011795A (en) Method for controlling AlV55 alloy nitride film at front end
CN113976918B (en) Remelting process for metal powder return material in additive manufacturing
WO2022174607A1 (en) High-performance tungsten alloy bar and preparation method therefor
CN106591617A (en) Manganese additive for aluminum alloy and preparation method of manganese additive
CN109868378B (en) Method for improving yield of AlV55 vanadium-aluminum alloy
CN111485158B (en) Core-shell structure reinforced TiB2-TiC base cermet and preparation method thereof
WO2024012036A1 (en) Method for controlling alv55 alloy oxide film at back end
EP0652980B1 (en) Master alloys for beta 21s titanium-based alloys and method of making same
CN110129595B (en) Method for improving yield of AlV55 vanadium-aluminum alloy
CN110668444A (en) Preparation method of tungsten carbide powder
CN104446560B (en) A kind of preparation method of zirconium white nozzle brick
CN110983090A (en) Sintering method of carbon-containing molybdenum alloy
CN110541083A (en) Preparation method for in-situ synthesis of nano MgO reinforced aluminum alloy base composite material
US7108830B2 (en) Apparatus and method for fabricating high purity, high density metal matrix composite materials and the product thereof
CN111519077A (en) Method for improving yield of AlV55 alloy
CN107867691A (en) A kind of preparation method and application of high-quality coarse-grained WC powder
CN111653406A (en) Method for recycling permanent magnet material ultrafine powder and molding waste and product thereof
CN105732028A (en) Method for preparing zirconium oxide nozzle brick with high temperature thermal shock resistance

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