CN220278266U - Plasma rotary electrode device for preparing pure titanium or titanium alloy powder - Google Patents
Plasma rotary electrode device for preparing pure titanium or titanium alloy powder Download PDFInfo
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- CN220278266U CN220278266U CN202321916509.1U CN202321916509U CN220278266U CN 220278266 U CN220278266 U CN 220278266U CN 202321916509 U CN202321916509 U CN 202321916509U CN 220278266 U CN220278266 U CN 220278266U
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- plasma generator
- atomizing chamber
- plasma
- electrode bar
- electrode
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- 239000000843 powder Substances 0.000 title claims abstract description 51
- 229910001069 Ti alloy Inorganic materials 0.000 title claims abstract description 17
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 title claims abstract description 17
- 239000010936 titanium Substances 0.000 title claims abstract description 17
- 229910052719 titanium Inorganic materials 0.000 title claims abstract description 17
- 239000007788 liquid Substances 0.000 claims abstract description 26
- 230000007246 mechanism Effects 0.000 claims abstract description 16
- 238000002844 melting Methods 0.000 claims abstract description 4
- 230000008018 melting Effects 0.000 claims abstract description 4
- 229910052751 metal Inorganic materials 0.000 claims description 16
- 239000002184 metal Substances 0.000 claims description 16
- 238000000889 atomisation Methods 0.000 claims description 14
- 239000011261 inert gas Substances 0.000 claims description 11
- 239000000463 material Substances 0.000 claims 5
- 239000002245 particle Substances 0.000 abstract description 9
- 238000009434 installation Methods 0.000 abstract description 3
- 239000010419 fine particle Substances 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 9
- 238000009689 gas atomisation Methods 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 4
- 239000000654 additive Substances 0.000 description 3
- 230000000996 additive effect Effects 0.000 description 3
- 238000004663 powder metallurgy Methods 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000009690 centrifugal atomisation Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012768 molten material Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Abstract
The utility model provides a plasma rotary electrode device for preparing pure titanium or titanium alloy powder, which comprises: one end of the electrode bar is connected with a driving motor for driving the electrode bar to rotate at a high speed, the other end of the electrode bar passes through a hole formed in one side wall of the atomizing chamber and enters the atomizing chamber, and a plasma generator for melting the electrode bar is arranged in the atomizing chamber; the axis of the electrode bar forms a certain included angle with the axis of the plasma generator, and the plasma generator is arranged in the atomizing chamber through the adjustable component; further comprises: and the liquid drop dispersing mechanism is coaxially arranged with the electrode bar, and one end of the liquid drop dispersing mechanism extends into the atomizing chamber. Through changing the installation angle of the electrode axis and the plasma generator axis and the liquid drop dispersing mechanism coaxially arranged on the electrode bar, more powder with smaller particle size can be obtained through the cooperation of the two devices, and the obtaining rate of fine particle size powder is improved.
Description
Technical Field
The utility model relates to the technical field of preparation of pure titanium or titanium alloy powder, in particular to a plasma rotary electrode device for preparing pure titanium or titanium alloy powder.
Background
Spherical metal powder is a key raw material in the fields of additive manufacturing and powder metallurgy, and has a great influence on the process technology and the performance of products. With the rapid development of the fields of aerospace, electronics, machinery, biomedical and the like, higher requirements and challenges are provided for additive manufacturing and powder metallurgy technologies. Therefore, as a key raw material for additive manufacturing and powder metallurgy processes, the performance and the production and manufacturing capacity of the metal powder need to meet higher requirements. Therefore, high quality spherical metal powder has been an important point of development and industrial development in recent years.
The technology of preparing the metal powder by using the plasma rotary electrode powder process (PREP) is a metal powder preparation method based on a high-speed rotary centrifugal atomization principle, and the metal powder produced by the technology has the advantages of high sphericity, good fluidity, low impurity content, few satellite powder and the like.
In the prior art, in order to obtain spherical powder with smaller granularity, the limit rotating speed of equipment is improved in most cases, so that electrode bars can generate larger centrifugal force, and thrown out metal liquid drops are finer, so that more metal powder with fine granularity is manufactured. However, this improved method forces the limiting rotational speed of the device to be changed, so that the service life of the device is reduced, and the manufacturing cost of the device is increased to some extent. Accordingly, a plasma rotary electrode device for preparing pure titanium or titanium alloy powder is proposed.
Disclosure of Invention
In order to solve the problems, the utility model provides a plasma rotary electrode device for preparing pure titanium or titanium alloy powder. A plasma rotary electrode device for preparing pure titanium or titanium alloy powder, comprising: one end of the electrode bar is connected with a driving motor for driving the electrode bar to rotate at a high speed, the other end of the electrode bar passes through a hole formed in one side wall of the atomizing chamber and enters the atomizing chamber, and a plasma generator for melting the electrode bar is arranged in the atomizing chamber;
the axis of the electrode bar forms a certain included angle with the axis of the plasma generator, and the main function is that when the electrode bar is melted by the plasma generator, the electrode bar cannot generate a middle sunken molten pool; the plasma generator is arranged in the atomization chamber through an adjustable component;
further comprises: and the liquid drop dispersing mechanism is coaxially arranged with the electrode bar, and one end of the liquid drop dispersing mechanism extends into the atomizing chamber. The liquid drop dispersing mechanism carries out secondary crushing on the liquid drops generated primarily, so that the particle size of the obtained powder is smaller.
In order to enable the included angle between the axis of the plasma generator and the axis of the electrode bar to be adjustable, the adjustable assembly further comprises a fixed plate arranged on the side wall of the atomizing chamber, the left side and the right side of the fixed plate are provided with adjusting plates for fixing the plasma generator sleeve and adjusting the angle, and the adjusting plates are provided with a plurality of clamping holes; the tail end of the plasma generator sleeve is movably connected with the adjusting plate, a preformed hole for a bolt to pass through is formed in the middle of the plasma generator sleeve, and the bolt passes through the preformed hole on the plasma generator sleeve and is clamped with the clamping hole through a clamping nut.
In order to enable the axis of the plasma generator to have more angle change with the axis of the electrode bar, further, the clamping holes are arc-shaped and are connected in series, and the clamping holes are used for adjusting the plasma generator sleeve in multiple angles.
In order to form spherical metal powder with finer granularity by the electrode bar, the liquid drop dispersing mechanism comprises an air atomizing nozzle for compressing air, and the air atomizing nozzle is mainly used for compressing air entering the air atomizing nozzle; the gas atomizing nozzle is communicated with the atomizing chamber, and the compressed gas is used on the electrode bar in the atomizing chamber after the gas in the atomizing chamber is compressed.
In order to enable the atomization chamber to reach the environment for manufacturing the metal powder, the device further comprises a vacuum device and an inert gas cylinder; the vacuum device is used for vacuumizing the atomization chamber, and the inert gas cylinder is used for filling inert gas into the vacuum atomization chamber so that the atomization chamber meets the inert atmosphere environment of the atomization powder making forming process.
In order to enable the spherical metal powder formed in the atomizing chamber to be collected, further, a powder collection bin is provided below the atomizing chamber for collecting the spherical metal powder formed in the atomizing chamber.
The utility model has the technical effects that:
according to the utility model, through changing the installation angles of the electrode axis and the plasma generator axis, the electrode bar is molten from outside to inside, and molten liquid drops are directly thrown out to separate from the electrode bar, so that the phenomenon that the molten liquid drops at the geometric center of the electrode bar absorb molten materials on the path in the process of moving to the edge to enlarge particles is avoided or reduced. And the gas atomization nozzle in the liquid drop dispersing mechanism absorbs the gas in the atomization chamber to compress the gas, so that high-speed gas flow is formed. Due to the design of the angle of the gas atomization nozzle, the formed high-speed gas flow is directly sprayed to the electrode bar, and after the electrode bar is refracted, the initially melted electrode bar liquid drops are crushed again, and the electrode bar liquid drops are directly and rapidly cooled in the crushing process to form powder. Through changing the installation angle of the electrode axis and the plasma generator axis and coaxially arranging the liquid drop dispersing mechanism on the electrode bar, more powder with smaller particle size is obtained through the cooperation of the two devices, and the obtaining rate of fine particle size powder is improved.
Drawings
FIG. 1 is a schematic view of a plasma rotary electrode apparatus for preparing pure titanium or titanium alloy powder in accordance with the present utility model;
FIG. 2 is a schematic diagram of an adjustable assembly of the present utility model;
FIG. 3 is an enlarged view of a portion of FIG. 1A in accordance with the present utility model;
in the figure, electrode bar stock, driving motor, atomizing chamber, plasma generator, adjustable component, gas atomizing nozzle, vacuum device, inert gas cylinder, powder collecting bin, fixing plate, adjusting plate, clamping hole, clamping nut and clamping nut.
Detailed Description
Embodiments of the present utility model are described in detail below with reference to fig. 1-3.
Example 1:
a plasma rotary electrode device for preparing pure titanium or titanium alloy powder, as shown in fig. 1-3, comprising: one end of the electrode bar 1 is connected with a driving motor 2 for driving the electrode bar to rotate at a high speed, the other end of the electrode bar 1 passes through a hole formed in one side wall of an atomizing chamber 3 and enters the inside of the atomizing chamber, and a plasma generator 4 for melting the electrode bar is arranged in the atomizing chamber 3;
wherein, the axis of the electrode bar 1 forms a certain included angle with the axis of the plasma generator 4, and the plasma generator 4 is arranged in the atomizing chamber 3 through the adjustable component 5;
further comprises: and the liquid drop dispersing mechanism is coaxially arranged with the electrode bar 1, and one end of the liquid drop dispersing mechanism extends into the atomizing chamber 3.
The specific operation process in the plasma rotary electrode device for preparing pure titanium or titanium alloy powder in the embodiment is as follows: the driving motor 2 drives the electrode bar 1 to rotate at a high speed, the plasma generator 4 starts to melt the electrode bar 1 when in operation, molten bar is in a cone-shaped shape, molten liquid drops are thrown away under the high-speed rotation, so that the liquid drops separated from the bar are separated from the bar, and the liquid drops are subjected to secondary crushing through the liquid drop dispersing mechanism, so that the particle size of the liquid drops is smaller, the obtained powder particle size is smaller, and the fine powder obtaining rate is increased. The adjustable component 5 can adjust the included angle between the plasma generator 4 and the axis of the electrode bar 1, and the fine powder obtaining rate is improved according to the included angle between the adjustment axes.
Example 2:
on the basis of embodiment 1, as shown in fig. 2, the adjustable component 5 comprises a fixed plate 50 installed on the side wall of the atomization chamber, the left side and the right side of the fixed plate 50 are provided with an adjusting plate 51 for fixing a plasma generator sleeve and adjusting an angle, and the adjusting plate 51 is provided with a plurality of clamping holes 52; the tail end of the plasma generator sleeve 53 is movably connected with the adjusting plate, a preformed hole for a bolt to pass through is arranged in the middle of the plasma generator sleeve 53, and the bolt passes through the preformed hole on the plasma generator sleeve and is clamped with the clamping hole 52 through the clamping nut 54.
The clamping holes 52 are arc-shaped and are connected in series for multi-angle adjustment of the plasma generator sleeve.
In this embodiment: when the angle of the plasma generator 4 needs to be adjusted, the clamping nut 54 is screwed left to enable the plasma generator sleeve 53 to be in a loose state, the angle of the plasma generator sleeve 53 is adjusted upwards or downwards, after the clamping hole 52 is determined, the clamping nut 54 is screwed right to enable the plasma generator sleeve 53 to be in a fixed state, and subsequent work is facilitated.
Example 3:
on the basis of embodiment 1, as shown in fig. 1-3, the droplet dispersing mechanism comprises an air atomizing nozzle 6 for compressing air, and the air atomizing nozzle 6 is communicated with the atomizing chamber 3 and is mainly used for compressing air entering the air atomizing nozzle.
In this embodiment: the gas atomizing nozzle 6 is communicated with the atomizing chamber 3, inert gas introduced into the atomizing chamber 3 also enters the gas atomizing nozzle 6 and is compressed in the gas atomizing nozzle 6, the compressed gas forms high-speed gas flow, and the formed high-speed gas flow is directly sprayed to the electrode bar 1 due to the angle design of the gas atomizing nozzle 6, and after being refracted by the electrode bar 1, the molten electrode bar liquid drops are crushed again and rapidly cooled. The operation further reduces the particle size of the small liquid drops, so that the particle size of the spherical metal powder is reduced, and the aim of manufacturing more spherical metal powder with small particle size is fulfilled.
Example 4:
on the basis of the embodiment 1, as shown in fig. 1, the vacuum device 7 and the inert gas cylinder 8 are included; the vacuum device 7 is used for vacuumizing the atomization chamber, and the inert gas cylinder 8 is used for filling inert gas into the vacuumized atomization chamber so that the atomization chamber meets the inert atmosphere environment of the atomization powder making forming process.
Also included is a powder collection bin 9, the powder collection bin 9 being disposed below the atomising chamber 3 for collecting the spherical metal powder formed in the atomising chamber.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced with equivalents; such modifications and substitutions do not depart from the spirit of the technical solutions according to the embodiments of the present utility model.
Claims (6)
1. A plasma rotary electrode device for preparing pure titanium or titanium alloy powder, comprising: the electrode rod material (1), one end of the electrode rod material (1) is connected with a driving motor (2) for driving the electrode rod material to rotate at a high speed, the other end of the electrode rod material passes through a hole formed in one side wall of the atomizing chamber (3) and enters the atomizing chamber, and a plasma generator (4) for melting the electrode rod material is arranged in the atomizing chamber (3);
the device is characterized in that an included angle is formed between the axis of the electrode bar stock (1) and the axis of the plasma generator (4), and the plasma generator (4) is arranged in the atomizing chamber (3) through the adjustable component (5);
further comprises: and the liquid drop dispersing mechanism is coaxially arranged with the electrode bar (1), and one end of the liquid drop dispersing mechanism extends into the atomizing chamber (3).
2. A plasma rotary electrode assembly for preparing pure titanium or titanium alloy powder as set forth in claim 1, wherein: the adjustable component (5) comprises a fixed plate (50) arranged on the side wall of the atomizing chamber, adjusting plates (51) used for fixing a plasma generator sleeve and adjusting angles are arranged on the left side and the right side of the fixed plate (50), and a plurality of clamping holes (52) are formed in the adjusting plates (51); the tail end of the plasma generator sleeve (53) is movably connected with the adjusting plate, a preformed hole for a bolt to pass through is formed in the middle of the plasma generator sleeve (53), and the bolt passes through the preformed hole on the plasma generator sleeve and is clamped with the clamping hole (52) through the clamping nut (54).
3. A plasma rotary electrode apparatus for preparing pure titanium or titanium alloy powder as set forth in claim 2, wherein: the clamping holes (52) are arc-shaped and are used for adjusting the plasma generator sleeve at multiple angles.
4. A plasma rotary electrode assembly for preparing pure titanium or titanium alloy powder as set forth in claim 1, wherein: the droplet dispersing mechanism comprises an air atomizing nozzle (6) for compressing air, and the air atomizing nozzle (6) is communicated with the atomizing chamber (3).
5. A plasma rotary electrode assembly for preparing pure titanium or titanium alloy powder as set forth in claim 1, wherein: the device also comprises a vacuum device (7) and an inert gas cylinder (8); the vacuum device (7) is used for vacuumizing the atomization chamber, and the inert gas cylinder (8) is used for filling inert gas into the vacuumized atomization chamber.
6. A plasma rotary electrode assembly for preparing pure titanium or titanium alloy powder as set forth in claim 1, wherein: the powder collecting bin (9) is arranged below the atomizing chamber (3) and used for collecting spherical metal powder formed in the atomizing chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321916509.1U CN220278266U (en) | 2023-07-20 | 2023-07-20 | Plasma rotary electrode device for preparing pure titanium or titanium alloy powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321916509.1U CN220278266U (en) | 2023-07-20 | 2023-07-20 | Plasma rotary electrode device for preparing pure titanium or titanium alloy powder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220278266U true CN220278266U (en) | 2024-01-02 |
Family
ID=89340594
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321916509.1U Active CN220278266U (en) | 2023-07-20 | 2023-07-20 | Plasma rotary electrode device for preparing pure titanium or titanium alloy powder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220278266U (en) |
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2023
- 2023-07-20 CN CN202321916509.1U patent/CN220278266U/en active Active
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