CN112475306A - Multifunctional gas atomization metal powder bed - Google Patents
Multifunctional gas atomization metal powder bed Download PDFInfo
- Publication number
- CN112475306A CN112475306A CN202011285659.8A CN202011285659A CN112475306A CN 112475306 A CN112475306 A CN 112475306A CN 202011285659 A CN202011285659 A CN 202011285659A CN 112475306 A CN112475306 A CN 112475306A
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- Prior art keywords
- pipe
- bin
- metal powder
- powder bed
- partition plate
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
- B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
- B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
- B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
- B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
- B22F2009/0848—Melting process before atomisation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
- B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
- B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
- B22F2009/088—Fluid nozzles, e.g. angle, distance
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
- B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
- B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
- B22F2009/0888—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid casting construction of the melt process, apparatus, intermediate reservoir, e.g. tundish, devices for temperature control
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
- B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
- B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
- B22F2009/0896—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid particle transport, separation: process and apparatus
Landscapes
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
Abstract
The invention discloses a multifunctional gas atomization metal powder bed, which comprises a processing bin, wherein a baffle is fixedly arranged in an inner cavity of the processing bin, a first partition plate is arranged in the middle of the right side of the baffle, a first crucible is arranged at the top of the first partition plate, a second partition plate is arranged at the bottom of the right side of the baffle, a second crucible is arranged at the top of the second partition plate, a feeding pipe is connected to the right side of the top of the processing bin in a penetrating manner, a feeding hopper is arranged at the top of the feeding pipe, a collecting bin is fixedly arranged at the bottom of the right side of the processing bin, a bin cover is arranged at the top of the collecting bin, a support plate is arranged at the right side of the baffle, steam in a boiler is introduced into the processing bin through a first steam inlet pipe and a second steam inlet pipe and is heated through a high-frequency coil, when solid metal in the first crucible is heated to be, thus, the solid metal can be fully melted into liquid state, thereby ensuring higher quality of the metal powder prepared subsequently.
Description
Technical Field
The invention relates to the technical field of metal powder preparation, in particular to a multifunctional gas atomization metal powder bed.
Background
The metal powder is a group of metal particles with the size less than 1mm, and comprises single metal powder, alloy powder and some refractory compound powder with metal property, and is a main raw material of powder metallurgy, the atomization powder preparation is to spray liquid metal by using air flow, the common air flow comprises compressed air, high-pressure nitrogen and hydrogen, the atomization powder has high balling rate and large apparent density, the compression performance varies according to the powder shape, aluminum powder and copper powder are atomized by using air in industry, high-speed steel powder is atomized by using nitrogen, high-temperature alloy is atomized by using hydrogen, metals or alloys which are difficult to oxidize such as copper, nickel, cobalt and the like are atomized by using high-pressure water, and the atomization powder preparation is the basis of a new powder metallurgy technology.
In the existing atomization powder making process, solid metal is generally heated for one time, so that the solid metal is difficult to completely change into a liquid state, which brings great interference to subsequent powder making work and leads to poor quality of the made metal powder; in the existing atomization powder making process, the speed of liquid metal flowing into a powder making device is generally high, so that the made powder is often uneven in particle size, and the quality of the made metal powder is uneven; in the existing atomization powder preparation process, used gas is generally not recycled, or metal powder is mixed in the recycled gas, which brings trouble to daily production, causes waste of production resources and increases production cost. In view of this, we propose a multifunctional bed of aerosolized metal powder.
Disclosure of Invention
The object of the present invention is to provide a multifunctional bed of aerosolized metal powder that solves the above mentioned problems.
In order to achieve the purpose, the invention provides the following technical scheme: a multifunctional gas atomization metal powder bed comprises a processing bin, wherein a baffle is fixedly arranged in an inner cavity of the processing bin, a first partition plate is arranged in the middle of the right side of the baffle, a first crucible is arranged at the top of the first partition plate, a second partition plate is arranged at the bottom of the right side of the baffle, a second crucible is arranged at the top of the second partition plate, a feeding pipe is connected to the right side of the top of the processing bin in a penetrating manner, a feeding hopper is arranged at the top of the feeding pipe, a collecting bin is fixedly arranged at the bottom of the right side of the processing bin, a bin cover is arranged at the top of the collecting bin, a supporting plate is arranged at the right side of the baffle, an air pump is arranged at the top of the supporting plate, a powder making pipe is arranged at the top of the second partition plate, the right side of the powder making pipe sequentially, the top on processing storehouse right side through connection has first steam to advance the pipe, first steam advances the top of pipe and inlays and be equipped with first pneumatic valve.
Preferably, a first liquid outlet hole is formed in the bottom of the first crucible, and a liquid outlet of the first liquid outlet hole penetrates through the top of the first partition plate.
Preferably, a second liquid outlet hole is formed in the bottom of the second crucible, and a liquid outlet of the second liquid outlet hole penetrates through the top of the second partition plate and is communicated with the inner cavity of the powder making pipe.
Preferably, the air inlet of the air pump is connected with an air inlet pipe, the air inlet of the air inlet pipe penetrates through the left side of the inner wall of the processing bin, the air outlet of the air pump is connected with an air conveying pipe, and the air outlet of the air conveying pipe penetrates through the left side of the powder making pipe.
Preferably, the top of the left side and the top of the right side of the inner wall of the powder making pipe are both provided with inclined plates.
Preferably, the air inlet of blast pipe is provided with the filter plate, the left side of filter plate is even has seted up a plurality of filtration pores.
Preferably, the right side of the bin cover is hinged with the right side of the collecting bin through a hinge, and the top of the bin cover is provided with a pull handle.
Preferably, the top of feeder hopper is provided with the bucket lid, the left side of bucket lid is articulated with the left side of feeder hopper through the hinge.
Preferably, the top of the first steam inlet pipe is connected with a second steam inlet pipe in a penetrating manner, the air inlet of the second steam inlet pipe penetrates through the top of the left side of the processing bin, and a second air valve is embedded in the top of the second steam inlet pipe.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, steam in the boiler is introduced into the processing bin from the first steam inlet pipe and the second steam inlet pipe, the first crucible and the second crucible are heated through the high-frequency coil, and when solid metal in the first crucible is heated to be liquid, the solid metal falls into the second crucible through the first liquid outlet hole and is heated for the second time, so that the solid metal can be fully melted to be liquid, and the high quality of metal powder prepared subsequently can be ensured.
2. In the invention, after the liquid metal flows into the powder making pipe from the second liquid outlet hole, the inclined plates are used for guiding the metal liquid, the two inclined plates can slow down the speed of the liquid metal flowing downwards, and simultaneously supersonic airflow is used for jetting to enable the liquid metal to slowly flow into the powder making pipe, the metal liquid can be prevented from being solidified on the inclined plates, and meanwhile, the airflow can be uniformly fed through the through holes on the wind shield, so that the powder forming of the liquid metal can be more uniform.
3. The inert gas entering the collection bin is recycled into the storage tank through the exhaust pipe, and the filtering holes can trap metal powder mixed in the gas in the collection bin, so that the used gas can be recycled, the metal powder can be prevented from overflowing, and the production resources and the cost can be saved.
Drawings
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a front view of the present invention;
FIG. 3 is a schematic view of an exhaust pipe according to the present invention;
FIG. 4 is an enlarged view taken at A of FIG. 2 according to the present invention;
fig. 5 is an enlarged view of the invention at B in fig. 2.
In the figure: the device comprises a processing bin 1, a baffle 2, a first clapboard 3, a first crucible 4, a first liquid outlet hole 5, a second crucible 6, a second clapboard 7, a second liquid outlet hole 8, a feeding pipe 9, a feeding hopper 10, a collecting bin 11, a bin cover 12, a pulling handle 13, a supporting plate 14, an air pump 15, an air inlet pipe 16, an air delivery pipe 17, a powder making pipe 18, an inclined plate 19, an exhaust pipe 20, a filter plate 21, a filter hole 22, a first steam inlet pipe 23, a first air valve 24, a second steam inlet pipe 25, a second air valve 26 and a bucket cover 27.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the 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.
Referring to fig. 1, 2 and 4, the present invention provides a technical solution: a multifunctional gas atomization metal powder bed comprises a processing bin 1, a baffle 2 is fixedly installed in an inner cavity of the processing bin 1, a first partition plate 3 is arranged in the middle of the right side of the baffle 2, a first crucible 4 is arranged at the top of the first partition plate 3, a first liquid outlet hole 5 is formed in the bottom of the first crucible 4, a liquid outlet of the first liquid outlet hole 5 penetrates through the top of the first partition plate 3, a second partition plate 7 is arranged at the bottom of the right side of the baffle 2, a second crucible 6 is arranged at the top of the second partition plate 7, a second liquid outlet hole 8 is formed in the bottom of the second crucible 6, a liquid outlet of the second liquid outlet hole 8 penetrates through the top of the second partition plate 7 and is communicated with an inner cavity of a powder making pipe 18, a feeding pipe 9 is connected to the right side of the top of the processing bin 1 in a penetrating manner, a feeding hopper 10 is arranged at the top of the feeding pipe 9, can drop into solid metal in to processing storehouse 1 by feeder hopper 10, solid metal falls into in first crucible 4, the top through connection on processing storehouse 1 right side has first steam to advance pipe 23, first steam advances the air inlet of pipe 23 and is connected with the steam outlet of boiler, first steam advances the top of pipe 23 and inlays and be equipped with first pneumatic valve 24, the top through connection that first steam advances pipe 23 has second steam to advance pipe 25, the air inlet that second steam advances pipe 25 runs through the left top in processing storehouse 1, the top that second steam advances pipe 25 is inlayed and is equipped with second pneumatic valve 26.
Further, open first pneumatic valve 24 and second pneumatic valve 26, steam in the boiler advances the pipe 25 by first steam and lets in processing storehouse 1 to through high frequency coil to first crucible 4 and second crucible 6 heat, when the solid metal in first crucible 4 is heated and becomes liquid, fall into second crucible 6 in by first play liquid hole 5, and obtain the secondary heating, so can make solid metal, fully melt to the liquid, thereby can guarantee that the quality of the metal powder of follow-up making is higher.
Referring to fig. 1, 2 and 5, a collecting bin 11 is fixedly installed at the bottom of the right side of a processing bin 1, a bin cover 12 is arranged at the top of the collecting bin 11, the right side of the bin cover 12 is hinged with the right side of the collecting bin 11 through a hinge, a pull handle 13 is arranged at the top of the bin cover 12, a support plate 14 is arranged at the right side of a baffle 2, an air extractor 15 is arranged at the top of the support plate 14, an air inlet of the air extractor 15 is connected with an air inlet pipe 16, an air inlet of the air inlet pipe 16 penetrates through the left side of the inner wall of the processing bin 1, an air inlet of the air inlet pipe 16 is connected with an air inlet of an inert gas storage tank, an air outlet of the air extractor 15 is connected with an air delivery pipe 17, an air outlet of the air delivery pipe 17 penetrates through the left side of a powder making pipe 18, a powder making pipe 18 is arranged at the top of, the right side through connection who collects storehouse 11 has blast pipe 20, the gas outlet of blast pipe 20 is connected with the air inlet of inert gas storage tank, the air inlet of blast pipe 20 is provided with filter plate 21, a plurality of filtration pores 22 have been seted up to the left side of filter plate 21 is even, filtration pore 22 can hold back the metal powder that is mingled with in the gas 11 in collecting the storehouse, so can carry out recycle to used gas, still can avoid metal powder's excessive to can practice thrift manufacturing resource and cost.
Furthermore, after the liquid metal flows into the powder making pipe 18 from the second liquid outlet hole 8, the inclined plates 19 are used for guiding the liquid metal, the two inclined plates 19 can slow down the speed of the liquid metal flowing downwards, supersonic airflow is used for blowing at the same time, the liquid metal slowly flows into the powder making pipe 18, the liquid metal can be prevented from being solidified on the inclined plates 19, and meanwhile, the airflow can be uniformly fed through the through holes in the wind shield, so that the powder forming of the liquid metal can be more uniform.
Further, the air pump 15 can pump the inert gas in the storage tank into the powder making pipe 18 through the air inlet pipe 16 and the air delivery pipe 17, the inert gas can cool the liquid metal flowing down from the inclined plate 19 and blow the liquid metal into powder, meanwhile, the metal powder enters the collection bin 11 and is collected, the inert gas entering the collection bin 11 is recovered into the storage tank through the exhaust pipe 20, and the filtering holes 22 can intercept the metal powder mixed in the gas in the collection bin 11.
In summary, in the invention, steam in the boiler is introduced into the processing bin from the first steam inlet pipe and the second steam inlet pipe, the first crucible and the second crucible are heated by the high-frequency coil, and when solid metal in the first crucible is heated to be liquid, the solid metal falls into the second crucible from the first liquid outlet hole and is heated for the second time, so that the solid metal can be fully melted into liquid, and the quality of metal powder manufactured subsequently is high, in the invention, after the liquid metal flows into the powder making pipe from the second liquid outlet hole, the inclined plates are used for guiding the metal liquid, the two inclined plates can slow down the speed of the metal liquid flowing downwards, and simultaneously supersonic airflow is used for blowing, so that the liquid metal slowly flows into the powder making pipe, and the metal liquid can be prevented from being solidified on the inclined plates, and meanwhile, the air flow can be uniformly fed by the through holes on the wind shielding plate, so that the powder of the liquid metal can be, the inert gas entering the collection bin is recycled into the storage tank through the exhaust pipe, and the filtering holes can trap metal powder mixed in the gas in the collection bin, so that the used gas can be recycled, the metal powder can be prevented from overflowing, and the production resources and the cost can be saved.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The utility model provides a multi-functional gas atomization metal powder bed, includes processing storehouse (1), its characterized in that: the inner cavity of the processing bin (1) is fixedly provided with a baffle (2), the middle of the right side of the baffle (2) is provided with a first partition plate (3), the top of the first partition plate (3) is provided with a first crucible (4), the bottom of the right side of the baffle (2) is provided with a second partition plate (7), the top of the second partition plate (7) is provided with a second crucible (6), the right side of the top of the processing bin (1) is connected with an inlet pipe (9) in a penetrating manner, the top of the inlet pipe (9) is provided with a feed hopper (10), the bottom of the right side of the processing bin (1) is fixedly provided with a collection bin (11), the top of the collection bin (11) is provided with a bin cover (12), the right side of the baffle (2) is provided with a support plate (14), the top of the support plate (14) is provided with an air pump (15, the right side of system powder pipe (18) runs through the right side of processing storehouse (1) inner wall and the left side of collecting storehouse (11) in proper order, the right side through connection who collects storehouse (11) has blast pipe (20), the top through connection on processing storehouse (1) right side has first steam to advance pipe (23), first steam advances the top of pipe (23) and inlays and be equipped with first pneumatic valve (24).
2. A multifunctional aerosolized metal powder bed according to claim 1, characterized in that: a first liquid outlet hole (5) is formed in the bottom of the first crucible (4), and a liquid outlet of the first liquid outlet hole (5) penetrates through the top of the first partition plate (3).
3. A multifunctional aerosolized metal powder bed according to claim 1, characterized in that: and a second liquid outlet hole (8) is formed in the bottom of the second crucible (6), and a liquid outlet of the second liquid outlet hole (8) penetrates through the top of the second partition plate (7) and is communicated with an inner cavity of the powder making pipe (18).
4. A multifunctional aerosolized metal powder bed according to claim 1, characterized in that: the air inlet of air extractor (15) is connected with intake pipe (16), the air inlet of intake pipe (16) runs through the left side of processing storehouse (1) inner wall, the gas outlet of air extractor (15) is connected with air-supply pipe (17), the gas outlet of air-supply pipe (17) runs through the left side of system powder pipe (18).
5. A multifunctional aerosolized metal powder bed according to claim 1, characterized in that: sloping plates (19) are arranged at the tops of the left side and the right side of the inner wall of the powder making pipe (18).
6. A multifunctional aerosolized metal powder bed according to claim 1, characterized in that: the air inlet of blast pipe (20) is provided with filter plate (21), the left side of filter plate (21) is even has seted up a plurality of filtration pores (22).
7. A multifunctional aerosolized metal powder bed according to claim 1, characterized in that: the right side of the bin cover (12) is hinged with the right side of the collecting bin (11) through a hinge, and a pull handle (13) is arranged at the top of the bin cover (12).
8. A multifunctional aerosolized metal powder bed according to claim 1, characterized in that: the top of feeder hopper (10) is provided with bucket lid (27), the left side of bucket lid (27) is articulated through the left side of hinge with feeder hopper (10).
9. A multifunctional aerosolized metal powder bed according to claim 1, characterized in that: the top of the first steam inlet pipe (23) is connected with a second steam inlet pipe (25) in a penetrating mode, the air inlet of the second steam inlet pipe (25) penetrates through the top of the left side of the processing bin (1), and a second air valve (26) is embedded in the top of the second steam inlet pipe (25).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011285659.8A CN112475306A (en) | 2020-11-17 | 2020-11-17 | Multifunctional gas atomization metal powder bed |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011285659.8A CN112475306A (en) | 2020-11-17 | 2020-11-17 | Multifunctional gas atomization metal powder bed |
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| CN112475306A true CN112475306A (en) | 2021-03-12 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116213737A (en) * | 2023-01-02 | 2023-06-06 | 相国新材料科技江苏有限公司 | High-temperature alloy powder production device for additive manufacturing and preparation method thereof |
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| JPH01188608A (en) * | 1988-01-25 | 1989-07-27 | Mitsubishi Metal Corp | Apparatus for continuous production of metal grains |
| CN105855560A (en) * | 2016-05-27 | 2016-08-17 | 广州纳联材料科技有限公司 | Spherical metal powder and preparation method thereof |
| WO2018042684A1 (en) * | 2016-08-30 | 2018-03-08 | 大研化学工業株式会社 | Silver powder production method and silver powder production apparatus |
| CN111230133A (en) * | 2020-03-31 | 2020-06-05 | 四川科匠轻金属材料科技有限公司 | Production equipment and production method for rapidly solidifying metal powder |
-
2020
- 2020-11-17 CN CN202011285659.8A patent/CN112475306A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01188608A (en) * | 1988-01-25 | 1989-07-27 | Mitsubishi Metal Corp | Apparatus for continuous production of metal grains |
| CN105855560A (en) * | 2016-05-27 | 2016-08-17 | 广州纳联材料科技有限公司 | Spherical metal powder and preparation method thereof |
| WO2018042684A1 (en) * | 2016-08-30 | 2018-03-08 | 大研化学工業株式会社 | Silver powder production method and silver powder production apparatus |
| CN111230133A (en) * | 2020-03-31 | 2020-06-05 | 四川科匠轻金属材料科技有限公司 | Production equipment and production method for rapidly solidifying metal powder |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116213737A (en) * | 2023-01-02 | 2023-06-06 | 相国新材料科技江苏有限公司 | High-temperature alloy powder production device for additive manufacturing and preparation method thereof |
| CN116213737B (en) * | 2023-01-02 | 2024-02-13 | 相国新材料科技江苏有限公司 | High-temperature alloy powder production device for additive manufacturing and preparation method thereof |
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Application publication date: 20210312 |
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