CN108820313B - Fine titanium-aluminum alloy powder packaging device - Google Patents
Fine titanium-aluminum alloy powder packaging device Download PDFInfo
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- CN108820313B CN108820313B CN201810653317.3A CN201810653317A CN108820313B CN 108820313 B CN108820313 B CN 108820313B CN 201810653317 A CN201810653317 A CN 201810653317A CN 108820313 B CN108820313 B CN 108820313B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B31/00—Packaging articles or materials under special atmospheric or gaseous conditions; Adding propellants to aerosol containers
- B65B31/02—Filling, closing, or filling and closing, containers or wrappers in chambers maintained under vacuum or superatmospheric pressure or containing a special atmosphere, e.g. of inert gas
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
- B65B51/10—Applying or generating heat or pressure or combinations thereof
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B63/00—Auxiliary devices, not otherwise provided for, for operating on articles or materials to be packaged
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- Powder Metallurgy (AREA)
Abstract
The invention relates to a micro titanium-aluminum alloy powder packaging device, and belongs to the field of powder metallurgy industry. The device comprises a three-stage vacuum chamber, wherein the first-stage vacuum chamber is provided with a shaking screen device, the top end of the first-stage vacuum chamber is provided with a powder pipeline, and a powder screen is arranged in the first-stage vacuum chamber; the secondary vacuum chamber is provided with a fine powder collecting and packaging bag, a local resistance heating belt, circulating cooling water, a heat dissipation device and a protection device; the third vacuum chamber is provided with an observation hole, and the shell is connected with a ground wire. The titanium-aluminum alloy powder is packaged by using the device, and because the device is in a vacuum or inert atmosphere during operation, the alloy powder is not contacted with air, so that the powder is prevented from being oxidized; the alloy powder is deposited at the bottom of the sealing bag under the action of gravity, so that the adsorption of the powder on the inner wall of the vacuum chamber is reduced, the utilization rate of the alloy powder is high, and the purity of the alloy powder is high; is suitable for batch production.
Description
The technical field is as follows:
the invention relates to a micro titanium-aluminum alloy powder packaging device, and belongs to the technical field of powder metallurgy industry.
Background art:
the TiAl alloy is a good structural material, has high specific strength, low density, high thermal conductivity, high oxidation resistance and good creep resistance, and laboratory studies show that the TiAl alloy has the potential of being applied at high temperature of over 900 ℃. However, the bottleneck hindering the large-scale application of the alloy is room temperature plasticity and difficult processability, and the powder metallurgy process can well solve the problems, not only realizes net and near forming, but also avoids defects and component segregation caused by casting.
In recent years, with the development of powder metallurgy technology, the preparation methods of refractory metal powders such as TiAl alloy powders are also changing day by day, and because titanium-aluminum alloys are highly active alloys and are very easy to pollute and oxidize, the problems of high oxygen content, uneven powder particle size distribution and the like exist in the alloy powders, and the TiAl alloy powders have difficulty in powdering, powder sieving and packaging.
At present, the powder packaging method commonly used in industry and laboratory is to package powder sieve powder into aluminum bags in a vacuum box and seal the bags by using sealing equipment. The sealing of fine titanium aluminum alloy powder using this encapsulation method has the following problems: 1. the titanium-aluminum alloy powder has uneven screening, the granularity and the granularity distribution of powder particles are difficult to control, and the obtained powder has wider size distribution. 2. The superfine titanium-aluminum alloy powder is easy to adsorb on the inner wall of the vacuum box, so that the utilization rate of the alloy powder is low. 3. Can not meet the continuous production requirement in industry.
The invention content is as follows:
in order to overcome the problems in the prior art, the invention aims to provide a fine titanium-aluminum alloy powder packaging device which is difficult to oxidize alloy powder, high in storage utilization rate, high in alloy powder purity and controllable in powder particle size and particle size distribution, and can realize continuous production of TiAl alloy powder.
In order to achieve the purpose, the invention provides a micro titanium-aluminum alloy powder packaging device, which adopts the following specific technical scheme:
a micro titanium-aluminum alloy powder packaging device comprises a device main body, a vacuum pump, an inert gas inflator pump and a gas pipeline, wherein the device main body sequentially comprises a first-stage vacuum chamber, a second-stage vacuum chamber and a third-stage vacuum chamber from top to bottom; the primary vacuum chamber is communicated with a vacuum pump and an inert gas inflator pump through a gas pipeline; the secondary vacuum chamber is communicated with a vacuum pump through a gas pipeline; the three-stage vacuum chamber is communicated with a vacuum pump through a pipeline; the top of the first-stage vacuum chamber is provided with a powder pipeline, and a shaking screen device and a powder screening system are arranged in the first-stage vacuum chamber; the screening system is simultaneously positioned in the first-stage vacuum chamber, the second-stage vacuum chamber and the third-stage vacuum chamber.
Further, the secondary vacuum chamber is communicated with a circulating cooling water device.
Further, the three-stage vacuum chamber is provided with an observation hole.
Furthermore, a baffle plate is arranged at the junction of the second-stage vacuum chamber and the third-stage vacuum chamber.
Further, the screen shaking device comprises a time relay, a motor, a connecting rod and a screen shaking rod, wherein the time relay is connected with the motor, the motor is connected with the connecting rod, and the connecting rod is connected with the screen shaking rod.
Further, the screening system comprises a filtering membrane, a screening net, a baffle valve and a powder collecting bag; the filtering membrane encloses a filtering space, the screening net is positioned in the filtering space, the powder collecting bag is positioned at the bottom of the filtering space, and the baffle valve is positioned above the powder collecting bag.
Further, the screening system also includes a partially resistive strip positioned between the powder collection bag and the flapper valve.
Further, the powder collecting bag is an aluminum bag.
Further, the filtering membrane is provided with two or more layers.
The working principle of the invention is as follows: the method comprises the steps of vacuumizing a first-stage vacuum chamber by using a vacuum pump, feeding fine titanium-aluminum alloy powder into a powder pipeline, starting a screen shaking rod to shake by using a screen shaking device, shaking the powder adsorbed on the inner wall of the vacuum chamber into a sealed collection bag, vacuumizing a second-stage vacuum chamber and a third-stage vacuum chamber, sealing an aluminum bag by using a local resistance band, and finally removing a compression bag in the third-stage vacuum chamber.
Compared with the prior art, the invention has the advantages that:
1. the fine TiAl alloy powder is screened and sealed under the vacuum condition and is not contacted with air, so that the oxidation of the alloy powder is avoided, and the alloy powder with low oxygen content and low impurity content is obtained;
2. the fine TiAl alloy powder is collected and sealed in a grading way, the size of the powder particles is easy to control, and the obtained powder has narrow particle size distribution;
3. the three-stage vacuum chamber collects sealed fine TiAl alloy powder, and the powder collection rate is high;
4. the device has simple structure, simple and convenient use and operation, and can realize closed, high-vacuum and continuous industrial production.
Description of the drawings:
FIG. 1 is a schematic view of a TiAl alloy fine powder encapsulating apparatus according to the present invention;
fig. 2 is a schematic view of a shaker apparatus.
In the figure: 1. a screen shaking device; 2. a powder line; 3. a filtration membrane; 4. a first stage vacuum chamber; 5. screening the net; 6. a pneumatic flapper valve; 7. a secondary vacuum chamber; 8. a baffle plate; 9. a local resistance band; 10. a gas conduit; 11. a powder collection bag; 12. a third stage vacuum chamber; 13. an inert gas inflator; 14. a vacuum pump; 15. a time relay; 16. an electric motor; 17. a connecting rod; 18. and shaking the screen rod.
The specific implementation mode is as follows:
in order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
A packaging device for micro titanium-aluminum alloy powder comprises a device main body, a vacuum pump 14, an inert gas inflator pump 13 and a gas pipeline 10, wherein the vacuum pump is a roots pump. The main body of the device comprises a first-stage vacuum chamber 4, a second-stage vacuum chamber 7 and a third-stage vacuum chamber 12 from top to bottom in sequence. The first-stage vacuum chamber is communicated with a vacuum pump and an inert gas inflator pump through a gas pipeline, and the inert gas adopts argon or helium. The secondary vacuum chamber is communicated with a vacuum pump through a gas pipeline. The third-stage vacuum chamber is communicated with a vacuum pump through a pipeline. The top of the first-stage vacuum chamber is provided with a powder pipeline 2, the first-stage vacuum chamber is internally provided with a shaking screen device 1 and a powder screening system, and the shaking screen device is arranged at the top of the first-stage vacuum chamber. The screening system is simultaneously positioned in the first-stage vacuum chamber, the second-stage vacuum chamber and the third-stage vacuum chamber. The secondary vacuum chamber is communicated with a circulating cooling water device. The third vacuum chamber is provided with an observation hole. A baffle plate 8 is arranged at the junction of the second-stage vacuum chamber and the third-stage vacuum chamber.
The screen shaking device comprises a time relay 15, a motor 16, a connecting rod 17 and a screen shaking rod 18, wherein the time relay is connected with the motor, the motor is connected with the connecting rod, and the connecting rod is connected with the screen shaking rod.
The screening system comprises a filtering membrane 3, a screening net 5, a pneumatic baffle valve 6 and an aluminum powder collecting bag 11. The filtering membrane is provided with two layers which form a filtering space, the screening net is positioned in the filtering space, and the screening net can be provided with a plurality of layers of screens with different meshes. The powder collection bag is located at the bottom of the filtration space and the flapper valve is located above the powder collection bag. The screening system also comprises a partially resistive strip 9 located between the powder collection bag and the flapper valve. The film passing through the screening system is arranged in the first-stage vacuum chamber and extends to the second-stage vacuum chamber and the third-stage vacuum chamber, and the pneumatic baffle valve, the aluminum powder collecting bag and the local resistance band are all positioned in the third-stage vacuum chamber.
The method for sealing the alloy powder by using the fine TiAl alloy powder packaging device comprises the following operation steps:
1. placing the screening nets with different meshes in a first-stage vacuum chamber, and connecting with a screen shaking rod;
2. the first-stage vacuum chamber is vacuumized by using a roots pump and a pneumatic baffle valve, and the vacuum degree reaches at least 1 x 10－4Pa, back flushing high-purity inert gas (argon or helium) into the vacuum chamber, wherein the gas pressure of the primary vacuum chamber is 0.1-0.5 MPa;
3. the prepared powder enters a first-stage vacuum chamber through a powder pipeline, a shaking screen device is started, a shaking screen motor drives a shaking screen rod to shake the powder adsorbed on a filtering membrane onto a screening net, and the screening net shakes to screen the powder;
4. vacuumizing the second-stage vacuum chamber and the third-stage vacuum chamber, opening a baffle valve after the vacuum degree reaches 0.1-0.5 MPa, collecting the screened powder into a sealed collection bag, and closing the baffle valve;
5. closing the baffle between the second-stage vacuum chamber and the third-stage vacuum chamber to separate the second-stage vacuum chamber and the third-stage vacuum chamber;
6. opening the local resistance band, compacting and sealing the sealed collection bag;
7. vacuumizing the three-stage vacuum chamber again, compressing the sealed collection bag, and closing the vacuum pump after the sealed collection bag is compacted in the observation hole;
8. back flushing air in the second-stage vacuum chamber and the third-stage vacuum chamber, opening a door of the vacuum chamber when the vacuum degree reaches 1MPa, and taking out the sealing bag;
9. after the step 3-8 is completed, starting the automatic powder screening net separating and combining device to replace the screening nets with meshes;
10. and after repeating for 4-9 times, grading, collecting and sealing the powder.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (7)
1. A fine titanium-aluminum alloy powder packaging device is characterized in that: the device comprises a device main body, a vacuum pump, an inert gas inflator pump and a gas pipeline, wherein the device main body sequentially comprises a first-stage vacuum chamber, a second-stage vacuum chamber and a third-stage vacuum chamber from top to bottom; the primary vacuum chamber is communicated with a vacuum pump and an inert gas inflator pump through a gas pipeline; the secondary vacuum chamber is communicated with a vacuum pump through a gas pipeline; the three-stage vacuum chamber is communicated with a vacuum pump through a pipeline; the top of the first-stage vacuum chamber is provided with a powder pipeline, and a shaking screen device and a screening system are arranged in the first-stage vacuum chamber; the screening system is located one-level vacuum room, second grade vacuum room and tertiary vacuum chamber simultaneously, the screening system includes: the powder collecting device comprises a filtering membrane, a screening net, a baffle valve, a local resistance band and a powder collecting bag, wherein the baffle valve, the local resistance band and the powder collecting bag are positioned in the three-stage vacuum chamber, a filtering space is formed by the filtering membrane in a surrounding mode, the screening net is positioned in the filtering space, the powder collecting bag is arranged at the bottom of the filtering space, the baffle valve is positioned above the powder collecting bag, and the local resistance band is positioned between the powder collecting bag and the baffle valve.
2. The apparatus for encapsulating fine titanium-aluminum alloy powder according to claim 1, wherein: the secondary vacuum chamber is communicated with a circulating cooling water device.
3. The apparatus for encapsulating fine titanium-aluminum alloy powder according to claim 1, wherein: the three-stage vacuum chamber is provided with an observation hole.
4. The apparatus for encapsulating fine titanium-aluminum alloy powder according to claim 1, wherein: and a baffle is arranged at the junction of the second-stage vacuum chamber and the third-stage vacuum chamber.
5. The fine titanium aluminum alloy powder encapsulating apparatus according to any one of claims 1 to 4, wherein: the screen shaking device comprises a time relay, a motor, a connecting rod and a screen shaking rod, wherein the time relay is connected with the motor, the motor is connected with the connecting rod, and the connecting rod is connected with the screen shaking rod.
6. The apparatus for encapsulating fine titanium-aluminum alloy powder according to claim 1, wherein: the powder collecting bag is an aluminum bag.
7. The apparatus for encapsulating fine titanium-aluminum alloy powder according to claim 1, wherein: the filtering membrane is provided with two or more layers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810653317.3A CN108820313B (en) | 2018-06-22 | 2018-06-22 | Fine titanium-aluminum alloy powder packaging device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810653317.3A CN108820313B (en) | 2018-06-22 | 2018-06-22 | Fine titanium-aluminum alloy powder packaging device |
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| CN108820313A CN108820313A (en) | 2018-11-16 |
| CN108820313B true CN108820313B (en) | 2021-02-19 |
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| CN113358845B (en) * | 2021-06-07 | 2024-04-09 | 中国航发北京航空材料研究院 | High-flux test method for positive and negative pressure protective environment storage of high-temperature alloy powder |
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| KR100602931B1 (en) * | 2004-02-05 | 2006-07-25 | 김동환 | Apparatus for preventing of closing of screen in a drum type sand separator |
| JP5212038B2 (en) * | 2008-11-17 | 2013-06-19 | 株式会社リコー | Electrophotographic toner manufacturing method, toner manufacturing sieve device, and toner recycling method |
| CN203108783U (en) * | 2013-03-15 | 2013-08-07 | 江苏宏远药业有限公司 | Titanium dioxide powder vibrating screen |
| CN103785846B (en) * | 2014-01-23 | 2016-01-20 | 西安欧中材料科技有限公司 | The preparation method of a kind of titanium alloy spherical powder at different levels |
| CN204656924U (en) * | 2015-04-29 | 2015-09-23 | 黄万平 | The dual-purpose mobile vibratory sieve of a kind of electric power fuel oil |
| CN206382197U (en) * | 2016-11-24 | 2017-08-08 | 无锡康斯坦特动力科技有限公司 | A kind of rubber grain screening machine of shake up and down |
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