CN107999780A - A kind of device and method for preparing spherical metal powder - Google Patents
A kind of device and method for preparing spherical metal powder Download PDFInfo
- Publication number
- CN107999780A CN107999780A CN201711468034.3A CN201711468034A CN107999780A CN 107999780 A CN107999780 A CN 107999780A CN 201711468034 A CN201711468034 A CN 201711468034A CN 107999780 A CN107999780 A CN 107999780A
- Authority
- CN
- China
- Prior art keywords
- spray chamber
- spill
- rotating disk
- bar material
- metal bar
- 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
- 239000002184 metal Substances 0.000 title claims abstract description 75
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 75
- 239000000843 powder Substances 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 22
- 239000000463 material Substances 0.000 claims abstract description 53
- 239000007921 spray Substances 0.000 claims abstract description 53
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 14
- 238000000889 atomisation Methods 0.000 claims description 12
- 229910052786 argon Inorganic materials 0.000 claims description 7
- 239000007789 gas Substances 0.000 claims description 7
- 239000002131 composite material Substances 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 7
- 210000002381 plasma Anatomy 0.000 description 42
- 238000004590 computer program Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 7
- 230000004048 modification Effects 0.000 description 5
- 238000012986 modification Methods 0.000 description 5
- 238000010146 3D printing Methods 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- B22F9/14—Making metallic powder or suspensions thereof using physical processes using electric discharge
Abstract
The invention discloses a kind of device and method for preparing spherical metal powder, it is related to technology of metal powder field.The device includes：Spray chamber, plasma generator, spill rotating disk, rotation axis, metal bar material；One end of the plasma generator is extended in the spray chamber, and the other end is fixed on the outside of the spray chamber；The rotation axis runs through the spray chamber from top to bottom, and the both ends of the rotation axis are connected with electric rotating machine respectively；The metal bar material and the spill rotating disk are arranged in the rotation axis according to this from top to bottom.
Description
Technical field
The present invention relates to technology of metal powder field, more particularly relates to a kind of device for preparing spherical metal powder and side
Method.
Background technology
With the fast development of increases material manufacturing technology, wherein metal 3D printing forming technique, because of its unique forming technique
With excellent parts performance, it is able to be applied rapidly in industries such as aviation, medical treatment.With the swift and violent hair of metal 3D printing
Exhibition, the demand of the spherical powder needed for 3D printing will be significantly increased.And the globular metallic powder of high-quality can be produced
Equipment and manufacturing technology are just particularly important.
At present, following two kinds are broadly divided into using the method for plasma rotating electrode atomization powder-making technique：The first：Directly
Powder method processed：Will high speed rotating bar, melted with plasma generator so as to preparing metal soccer star's powder；Second
Plant, indirectly powder method processed：Molten drop is thrown away under the action of the centrifugal force by the switching thing such as high-speed rotating crucible, concave disks,
With powder spherical powder processed.Because second of preparation method is polluted there are raw material metal, molten drop is easy to stick in crucible or spill
The shortcomings of on disk, therefore, in order to which the spherical metal powder of higher quality is made, the defects of indirect powder method processed, is improved be must
Want.
The content of the invention
The embodiment of the present invention provides a kind of device and method for preparing spherical metal powder, to solve to deposit in the prior art
In metallic pollution, molten drop is easy to stick on crucible or concave disks the problem of.
The embodiment of the present invention provides a kind of device for preparing spherical metal powder, including：Spray chamber, plasma generator,
Spill rotating disk, rotation axis, metal bar material；
One end of the plasma generator is extended in the spray chamber, and the other end is fixed on the outside of the spray chamber；
The rotation axis runs through the spray chamber from top to bottom, and the both ends of the rotation axis connect with electric rotating machine respectively
Connect；
The metal bar material and the spill rotating disk are arranged in the rotation axis according to this from top to bottom.
Preferably, the spill rotating disk is identical with the composition material of the metal bar material.
Preferably, the spray chamber is vacuum chamber, has double furnace wall, and include water cooling between the double furnace wall
Layer.
Preferably, the quantity of the plasma generator includes multiple；
Multiple plasma generators extend to the indoor length difference of the atomization, and extend in the spray chamber
The plasma generator length be not more than the spray chamber width half；And/or
Multiple plasma generators are misaligned in the indoor position of atomization.
Preferably, collection hopper is further included, the collection hopper is located at the lower section of the spray chamber.
Preferably, temperature sensor is further included, the temperature sensor is arranged in the atomization chamber interior walls.
The embodiment of the present invention additionally provides a kind of method for preparing spherical metal powder, including：
Metal bar material on the rotary shaft and spill rotating disk are set, carried out respectively under the high speed rotation of the rotation axis
Rotate at a high speed；
The high-speed rotating metal bar material produces molten metal by extending to the indoor plasma generator of atomization
Drop；
The molten drop is dropped in the high-speed rotating spill rotating disk, when the molten drop and from described recessed
After the edge of shape rotating disk flies out, spherical metal powder is formed.
Preferably, metal bar material and the spill rotating disk set on the rotary shaft, revolves in the high speed of the rotation axis
Before carrying out high speed rotation respectively under turning, further include：
Spray chamber is vacuumized, and argon gas is filled with into the spray chamber；Wherein,
The vacuum of the spray chamber is 1.0x10-2Below Pa, the pressure of the indoor argon gas of the atomization for 0.06~
Between 0.08Mpa.
Preferably, when the molten drop is dropped in the high-speed rotating spill rotating disk, specifically include：
It is arranged on and is atomized the temperature that indoor temperature sensor obtains the spill rotating disk, the plasma generator root
According to the temperature, the spill rotating disk is heated.
Preferably, the outside diameter φ 75mm of the metal bar material, the rotary speed of the metal bar material is between 0~5000rpm
Between；
The rotating speed of the spill turntable is between 0~24000rpm.
An embodiment of the present invention provides a kind of device and method for preparing spherical metal powder, which mainly includes atomization
Room, plasma generator, spill rotating disk, rotation axis, metal bar material；One end of the plasma generator extends to the mist
Change interior, the other end is fixed on the outside of the spray chamber；The rotation axis runs through the spray chamber, and the rotation from top to bottom
The both ends of axis are connected with electric rotating machine respectively；The metal bar material and the spill rotating disk are arranged on described according to this from top to bottom
In rotation axis.The device compared with the prior art, adds plasma generator in spray chamber, it can be ensured that molten metal is dropped in
In spill rotating disk, thus reduce because temperature reduces and the problem of cause spill rotating disk binding metal bar；So as to solve
Determine and metallic pollution exists in the prior art, molten drop is easy to stick on crucible or concave disks the problem of.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is attached drawing needed in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, without creative efforts, can be with
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is a kind of apparatus structure schematic diagram for preparing spherical metal powder provided in an embodiment of the present invention.
Embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without making creative work
Embodiment, belongs to the scope of protection of the invention.
Exemplary the showing of Fig. 1 is illustrated by a kind of apparatus structure for preparing spherical metal powder provided in an embodiment of the present invention
Figure.
As shown in Figure 1, the embodiment of the present invention provides a kind of device for preparing spherical metal powder, mainly include：Spray chamber
2, plasma generator 1, spill rotating disk 4, rotation axis 5 and metal bar material 3.
Specifically, spray chamber 2 is the square of a sealing, and one end of plasma generator 1 is extended in spray chamber 2,
And the other end of plasma generator 1 is outside spray chamber 2, and pass through the outside that fixing device fixes spray chamber 2.Need what is illustrated
Be, in a particular application, the quantity of plasma generator 1 can include it is multiple, such as, as shown in Figure 1, two plasmas occur
Device 1 is separately positioned on the both sides of spray chamber 2, and a plasma with extreme length occurs in two plasma generators 1
Device 1, its length are not more than the half of 2 width of spray chamber.Furthermore two plasma generators 1 are in spray chamber 2 along mist
Change the order of room 2 from top to bottom, respectively with different height.
It should be noted that spray chamber 2 provided in an embodiment of the present invention is closed chamber, and the closed chamber has sealing performance
Excellent, end vacuum can reach 5.0x10-3The ability of Pa.Specifically, the structure of spray chamber 2 is double furnace wall, and double furnace wall
Centre include water-cooled layer.
Further, as shown in Figure 1, rotation axis 5 runs through whole spray chamber 2, and the both ends difference of rotation axis 5 from top to bottom
It is connected with electric rotating machine.In embodiments of the present invention, the rotation mode to rotation axis 5 and the specific rotary power of rotation axis 5
Do not limit.
Further, metal bar material 3 and spill rotating disk 4 are successively set in rotation axis 5 from top to bottom, and metal bar material
3 and spill rotating disk 4 under the drive of rotation axis 5, high speed rotation can be carried out.
In a particular application, when rotation axis 5 is rotated in high speed, the metal bar material 3 and spill that are arranged in rotation axis 5 revolve
Turntable 4 is also carrying out high speed rotation, and the plasma generator 1 that can produce degree plasma torch up to ten thousand can be sent out to metal bar material 3
Go out flame so that metal bar material 3 is merged from molten drop, and molten drop can be dropped down from metal bar material 3, is fallen at a high speed
In rotating spill rotating disk 4.In embodiments of the present invention, the infrared temperature sensor 6 being arranged in spray chamber 2 can be examined in real time
The temperature of spill rotating disk 4 is surveyed, so as to control plasma generator 1 to heat spill rotating disk 4.For example work as infrared temperature
When degree sensor 6 confirms that the temperature of spill rotating disk 4 does not reach requirement, plasma generator 1 can be controlled by controller to recessed
Shape rotating disk 4 sends plasma torch, so that the temperature of spill rotating disk 4 rises；And when infrared temperature sensor 6 confirms
When the temperature of spill rotating disk 4 reaches requirement, then plasma generator 1 need not send plasma torch to spill rotating disk 4.
In embodiments of the present invention, to infrared temperature sensor 6, the job control principle between plasma generator 1 is not done specifically
Limit.
In practical applications, plasma generator 1 to metal bar material 3 when launching plasma torch, according to different gold
Belong to the physical property of bar 3, high energy plasma flame may be produced.Such as, it is assumed that 3 feed speed of metal bar material is VMaterial, it is long
A diameter of D of degreeMaterial, then can calculate, it is Q that metal bar material 3, which is heated to minimum heat required during fusing point,Material, then according to QMaterial, it is multiplied by
Heat gain coefficient §Heat, can calculate the heat of the generation of high energy plasma generator 1 should be：QDevice=QMaterial.§Heat, according to this, really
Determine the output current and magnitude of voltage of the power supply of plasma generator 1.
Further, in order to solve the problems, such as that molten drop is easy to stick in spill rotating disk 4 in the prior art, it is preferable that
The material of spill rotating disk 4 and the material identical of metal bar material 3, so as to avoid pollution metal bar material 3, and molten drop
It is easy to stick in spill rotating disk 4 the problem of.
Further, the embodiment of the present invention provides a kind of device for preparing spherical metal powder and has further included collection hopper 7, should
Collection hopper 7 is arranged on the lower section of spray chamber 2, by the collection hopper 7, can collect the globular metallic powder formed in spray chamber 2.
A kind of device for preparing spherical metal powder provided in an embodiment of the present invention is introduced in order to clearer, is situated between below
Continue and prepare the preparation method of spherical metal powder, the present apparatus is apparent from so as to basis.This method mainly includes following
Step：
Step 101, the metal bar material 3 and spill rotating disk 4 being arranged in rotation axis 5, revolve in the high speed of the rotation axis 5
High speed rotation is carried out respectively under turning；
Step 102, the high-speed rotating metal bar material 3 is by extending to the plasma generator 1 in the spray chamber 2
Produce molten drop；
Step 103, the molten drop is dropped in the high-speed rotating spill rotating disk 4, when the molten drop
And after flying out from the edge of the spill rotating disk 4, form spherical metal powder.
Before step 101, it is necessary to first be vacuumized to spray chamber 2, and argon is filled with into the spray chamber 2 vacuumized
Gas；Wherein, the vacuum of the spray chamber 2 vacuumized needs to reach 1.0x10-2Below Pa, and rushed into the spray chamber 2 vacuumized
After entering argon gas, the pressure of argon gas needs to reach between 0.06~0.08Mpa.
In a step 101, the outside diameter of metal bar material 3 is φ 75mm, the rotary speed of metal bar material 3 can reach 0~
Between 5000rpm, the rotary speed of spill turntable can reach between 0~24000rpm.
When the rotary speed of metal bar material 3 reaches particular requirement, plasma generator 1 to metal bar material 3 launch etc. from
Sub- flame, so that metal bar material 3 starts to melt, forms molten drop, molten drop is dropped in the center of spill rotating disk 4
Centre；The infrared temperature sensor 6 being arranged in spray chamber 2 detects the temperature of spill rotating disk 4, when the temperature of spill rotating disk 4
When reaching requirement, fall the molten drop in spill rotating disk 4 under the high speed rotation of spill rotating disk 4, can be revolved from spill
The edge of turntable 4 flies out, so as to form globular metallic powder；It is when the temperature of spill rotating disk 4 not up to requires, then infrared
Temperature sensor 6 can cause plasma generator 1 that plasma torch occurs to spill rotating disk 4, so that spill rotating disk 4
Temperature rise, furthermore, molten drop is not sticked in spill rotating disk 4, and can be flown out from the edge of spill rotating disk 4,
Form globular metallic powder.
In conclusion an embodiment of the present invention provides a kind of device and method for preparing spherical metal powder, device master
To include spray chamber, plasma generator, spill rotating disk, rotation axis, metal bar material；Prolong one end of the plasma generator
Extend in the spray chamber, the other end is fixed on the outside of the spray chamber；The rotation axis runs through the spray chamber from top to bottom,
And the both ends of the rotation axis are connected with electric rotating machine respectively；The metal bar material and the spill rotating disk are from top to bottom according to this
It is arranged in the rotation axis.The device compared with the prior art, adds plasma generator in spray chamber, it can be ensured that gold
Belong to liquid to be dropped in spill rotating disk, so that reduce causes asking for spill rotating disk binding metal bar because temperature reduces
Topic；The shape and material of spill rotating disk are improved, molten drop is easier centrifugal atomizing, non-sticky disk, and spill turntable
Material is identical with metal bar material, so as to avoid the pollution of spherical metal powder；Improve shape, the installation position of plasma generator
Put and performance, so that it is guaranteed that, reliability and uniformity when metal bar material rotation is melted；Sensed using reliable infrared temperature
Device, realizes the closed-loop control of spill turntable, it is ensured that use environment of key components and parts etc..
It should be understood by those skilled in the art that, the embodiment of the present invention can be provided as method, system or computer program
Product.Therefore, the present invention can use the reality in terms of complete hardware embodiment, complete software embodiment or combination software and hardware
Apply the form of example.Moreover, the present invention can use the computer for wherein including computer usable program code in one or more
The computer program production that usable storage medium is implemented on (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.)
The form of product.
The present invention be with reference to according to the method for the embodiment of the present invention, the flow of equipment (system) and computer program product
Figure and/or block diagram describe.It should be understood that it can be realized by computer program instructions every first-class in flowchart and/or the block diagram
The combination of flow and/or square frame in journey and/or square frame and flowchart and/or the block diagram.These computer programs can be provided
The processors of all-purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices is instructed to produce
A raw machine so that the instruction performed by computer or the processor of other programmable data processing devices, which produces, to be used in fact
The device for the function of being specified in present one flow of flow chart or one square frame of multiple flows and/or block diagram or multiple square frames.
These computer program instructions, which may also be stored in, can guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works so that the instruction being stored in the computer-readable memory, which produces, to be included referring to
Make the manufacture of device, the command device realize in one flow of flow chart or multiple flows and/or one square frame of block diagram or
The function of being specified in multiple square frames.
These computer program instructions can be also loaded into computer or other programmable data processing devices so that counted
Series of operation steps is performed on calculation machine or other programmable devices to produce computer implemented processing, thus in computer or
The instruction performed on other programmable devices is provided and is used for realization in one flow of flow chart or multiple flows and/or block diagram one
The step of function of being specified in a square frame or multiple square frames.
Although preferred embodiments of the present invention have been described, but those skilled in the art once know basic creation
Property concept, then can make these embodiments other change and modification.So appended claims be intended to be construed to include it is excellent
Select embodiment and fall into all change and modification of the scope of the invention.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
God and scope.In this way, if these modifications and changes of the present invention belongs to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising including these modification and variations.
Claims (10)
- A kind of 1. device for preparing spherical metal powder, it is characterised in that including：Spray chamber, plasma generator, spill rotation Disk, rotation axis, metal bar material；One end of the plasma generator is extended in the spray chamber, and the other end is fixed on the outside of the spray chamber；The rotation axis runs through the spray chamber from top to bottom, and the both ends of the rotation axis are connected with electric rotating machine respectively；The metal bar material and the spill rotating disk are arranged in the rotation axis according to this from top to bottom.
- 2. device as claimed in claim 1, it is characterised in that the composition material of the spill rotating disk and the metal bar material It is identical.
- 3. device as claimed in claim 1, it is characterised in that the spray chamber is vacuum chamber, has double furnace wall, and described Include water-cooled layer between double furnace wall.
- 4. device as claimed in claim 1, it is characterised in that the quantity of the plasma generator includes multiple；Multiple plasma generators extend to the indoor length difference of the atomization, and extend to the indoor institute of atomization The length for stating plasma generator is not more than the half of the spray chamber width；And/orMultiple plasma generators are misaligned in the indoor position of atomization.
- 5. device as claimed in claim 1, it is characterised in that further include collection hopper, the collection hopper is located at the spray chamber Lower section.
- 6. device as claimed in claim 1, it is characterised in that further include temperature sensor, the temperature sensor is arranged on In the atomization chamber interior walls.
- A kind of 7. method for preparing spherical metal powder, it is characterised in that including：Metal bar material on the rotary shaft and spill rotating disk are set, carried out respectively at a high speed under the high speed rotation of the rotation axis Rotation；The high-speed rotating metal bar material produces molten drop by extending to the indoor plasma generator of atomization；The molten drop is dropped in the high-speed rotating spill rotating disk, is revolved when the molten drop and from the spill After the edge of turntable flies out, spherical metal powder is formed.
- 8. the method for claim 7, it is characterised in that the metal bar material set on the rotary shaft and spill rotation Disk, before carrying out high speed rotation respectively under the high speed rotation of the rotation axis, further includes：Spray chamber is vacuumized, and argon gas is filled with into the spray chamber；Wherein,The vacuum of the spray chamber is 1.0x10-2Below Pa, the pressure of the indoor argon gas of atomization is 0.06~0.08Mpa Between.
- 9. the method for claim 7, it is characterised in that the molten drop is dropped in high-speed rotating described recessed When in shape rotating disk, specifically include：It is arranged on and is atomized the temperature that indoor temperature sensor obtains the spill rotating disk, the plasma generator is according to institute Temperature is stated, the spill rotating disk is heated.
- 10. the method for claim 7, it is characterised in thatThe outside diameter φ 75mm of the metal bar material, the rotary speed of the metal bar material is between 0~5000rpm；The rotating speed of the spill turntable is between 0~24000rpm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711468034.3A CN107999780A (en) | 2017-12-29 | 2017-12-29 | A kind of device and method for preparing spherical metal powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711468034.3A CN107999780A (en) | 2017-12-29 | 2017-12-29 | A kind of device and method for preparing spherical metal powder |
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| Publication Number | Publication Date |
|---|---|
| CN107999780A true CN107999780A (en) | 2018-05-08 |
Family
ID=62049020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711468034.3A Pending CN107999780A (en) | 2017-12-29 | 2017-12-29 | A kind of device and method for preparing spherical metal powder |
Country Status (1)
| Country | Link |
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| CN (1) | CN107999780A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108941594A (en) * | 2018-08-07 | 2018-12-07 | 西安赛隆金属材料有限责任公司 | A kind of plasma rotating electrode milling method and device based on PREP |
| CN109136819A (en) * | 2018-07-24 | 2019-01-04 | 秦小梅 | A kind of stable type powder ion plasma plating automatic doubler surface glouer |
| CN109570521A (en) * | 2018-12-24 | 2019-04-05 | 南通金源智能技术有限公司 | The method that plasma spheroidization prepares metal powder |
| WO2023015613A1 (en) * | 2021-08-12 | 2023-02-16 | 江苏天楹等离子体科技有限公司 | Device and method for producing metal powder by means of plasma atomization |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109136819A (en) * | 2018-07-24 | 2019-01-04 | 秦小梅 | A kind of stable type powder ion plasma plating automatic doubler surface glouer |
| CN109136819B (en) * | 2018-07-24 | 2020-06-05 | 兆基五金制品（苏州）有限公司 | Stable powder ion plasma plating equipment |
| CN108941594A (en) * | 2018-08-07 | 2018-12-07 | 西安赛隆金属材料有限责任公司 | A kind of plasma rotating electrode milling method and device based on PREP |
| CN109570521A (en) * | 2018-12-24 | 2019-04-05 | 南通金源智能技术有限公司 | The method that plasma spheroidization prepares metal powder |
| WO2023015613A1 (en) * | 2021-08-12 | 2023-02-16 | 江苏天楹等离子体科技有限公司 | Device and method for producing metal powder by means of plasma atomization |
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