CN210676946U - Plasma arc spheroidizing powder device - Google Patents
Plasma arc spheroidizing powder device Download PDFInfo
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- CN210676946U CN210676946U CN201920832229.XU CN201920832229U CN210676946U CN 210676946 U CN210676946 U CN 210676946U CN 201920832229 U CN201920832229 U CN 201920832229U CN 210676946 U CN210676946 U CN 210676946U
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Abstract
The utility model provides a plasma arc balling powder device belongs to plasma balling device technical field. The device comprises a balling tower, a low-pressure direct current plasma spray gun and a powder feeding device. The number of the low-pressure direct current plasma spray guns is only 1 and the low-pressure direct current plasma spray guns are arranged at the top of the balling tower along the axial direction of the balling tower; the number of powder feeding devices is at least 2, each powder feeding device is horizontally arranged at the plasma jet outlet end of the low-pressure direct current plasma spray gun, the powder outlet end of each powder feeding device faces the plasma jet, and the included angles of the two adjacent powder feeding devices on the same horizontal plane are equal. The plasma arc spheroidizing powder device has the advantages of simple structure, low cost, easy operation, strong adaptability and high efficiency, and is favorable for preparing powder with better appearance and fluidity.
Description
Technical Field
The utility model belongs to the technical field of plasma spheroidization device, and in particular to plasma arc spheroidization powder device.
Background
In the existing powder processing device, the powder mobility is poor due to more satellite balls in some prepared powder, and meanwhile, the defect of hollow powder exists, and the particle size of some prepared powder is large, so that the requirements of a 3D printing process, a cold/hot spraying process and an injection molding process cannot be met.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a plasma arc balling powder device, the device simple structure, it is with low costs, the processing ease, strong adaptability, it is efficient, be favorable to preparing out the requirement that the powder of the equal preferred of appearance, mobility is in order to satisfy 3D printing technology, cold/hot spraying technology and injection moulding technology.
The utility model provides a its technical problem adopt following technical scheme to realize:
the embodiment of the utility model provides a plasma arc balling powder device, it includes balling tower, low pressure direct current plasma spray gun and send the powder device.
The number of the low-pressure direct current plasma spray guns is only 1 and is arranged at the top of the balling tower along the axial direction of the balling tower.
The number of powder feeding devices is at least 2, each powder feeding device is horizontally arranged at the plasma jet outlet end of the low-pressure direct current plasma spray gun, the powder outlet end of each powder feeding device faces the plasma jet, and the included angles of the two adjacent powder feeding devices on the same horizontal plane are equal.
Furthermore, the low-voltage direct-current plasma spray gun comprises a cathode, an ignition anode and a working anode which are arranged in series, and the powder feeding device is arranged at the position of a plasma jet outlet of the working anode.
Furthermore, the ignition anode and the working anode are both provided with tungsten lining layers, and an insulating layer is arranged between the ignition anode and the working anode; the inner diameters of the throats of the ignition anode and the working anode are 6-10 mm.
Further, the plasma arc spheroidizing powder device also comprises a power supply, a control system and a gas supply device which are positioned outside the spheroidizing tower, wherein the power supply is used for supplying power to the low-voltage direct-current plasma spray gun, the control system is used for controlling the working state of the low-voltage direct-current plasma spray gun, and the gas supply device is used for supplying gas to the low-voltage direct-current plasma spray gun.
Further, the gas supply device comprises a hydrogen supply device and an argon supply device, the hydrogen supply device is connected with the low-pressure direct current plasma spray gun, and the argon supply device is connected with the low-pressure direct current plasma spray gun and the balling tower.
Further, the balling tower is of a double-layer water-cooled structure, and the lower part and the upper part of the balling tower are respectively provided with a cooling water inlet and a cooling water outlet.
Further, the plasma arc spheroidizing powder device also comprises a pressure sensor for detecting the pressure inside the spheroidizing tower and a gas sensor for detecting the contents of oxygen and nitrogen inside the spheroidizing tower.
Further, plasma arc balling powder device still includes the vacuum pump subassembly that sets up in balling tower outside being used for to balling tower evacuation, and the vacuum pump subassembly is including diffusion pump, lobe pump and the mechanical pump that connects gradually.
Further, plasma arc balling powder device still is equipped with gas filter, and gas filter is equipped with the balling tower second connector that is used for being connected with the balling tower, is used for the diffusion pump connector of being connected with the diffusion pump and is used for the lobe pump connector of being connected with the lobe pump.
Further, the plasma arc spheroidizing powder device also comprises a powder collecting tank arranged at the bottom of the spheroidizing tower.
Plasma arc balling powder device's beneficial effect includes in this application:
the application provides a plasma arc balling powder device matches through 1 low pressure direct current plasma spray gun that sets up along the axial of balling tower and 2 at least powder feeding devices that the contained angle at same horizontal plane equals, can guarantee the even powder feeding of each position, adopts low pressure direct current plasma arc to improve the appearance of each position powder and improve the sphericity and the compactness of powder as the heat source in addition, realizes the preparation of high sphericity fine particle diameter powder. The plasma arc spheroidizing powder device has the advantages of simple structure, low cost, easy operation, strong adaptability and high efficiency, and is favorable for preparing powder with better appearance and fluidity.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of a plasma arc spheroidizing powder device provided in example 1 of the present application;
FIG. 2 is a schematic diagram showing the positions of a cathode, an ignition anode and a working anode in the low-voltage DC plasma torch provided in embodiment 1 of the present application;
FIG. 3 is a schematic view of a first structure of a powder feeding device in a plasma arc spheroidizing powder device provided in example 1 of the present application;
FIG. 4 is a schematic view of a second structure of a powder feeding device in a plasma arc spheroidizing powder device provided in embodiment 1 of the present application;
fig. 5 is a schematic structural diagram of a third powder feeding device in a plasma arc spheroidizing powder device provided in embodiment 1 of the present application.
Icon: 10-plasma arc spheroidizing powder device; 11-a spheroidisation tower; 111-cooling water outlet; 112-cooling water inlet; 113-a powder collection tank; 12-low voltage dc plasma torch; 121-a cathode; 122-ignition anode; 123-a tungsten liner layer; 124-an insulating layer; 125-working anode; 13-a powder feeding device; 14-a power supply; 15-a control system; 16-a gas supply device; 161-hydrogen supply means; 162-argon supply; 171-a pressure sensor; 172-a gas sensor; 18-a vacuum pump assembly; 181-diffusion pump; 182-roots pump; 183-mechanical pump; 19-gas filter.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the utility model is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element to be referred must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
Furthermore, the term "vertical" or the like does not require that the components be perfectly vertical, but rather may be slightly inclined. For example, "vertical" merely means that the direction is more vertical than "horizontal", and does not mean that the structure must be perfectly vertical, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The following is a detailed description.
Example 1
Referring to fig. 1, the present embodiment provides a plasma arc spheroidizing powder device 10, which includes a spheroidizing tower 11 (such as a vertical spheroidizing tower), a low-pressure dc plasma spray gun 12 and a powder feeding device 13.
Wherein, the number of the low pressure direct current plasma spray gun 12 is only 1 and is arranged at the top of the balling tower 11 along the axial direction of the balling tower 11. The low pressure refers to the working environment pressure lower than the atmospheric pressure, and the pressure can be 0-99999 Pa.
Specifically, the low-voltage dc plasma torch 12 in the present embodiment includes a cathode 121, and an ignition anode 122 and a working anode 125 which are arranged in series, and the positional relationship among the cathode 121, the ignition anode 122 and the working anode 125 is shown in fig. 2. The powder feeding device 13 is disposed at the plasma outlet position of the working anode 125 and is close to the working anode 125.
The number of the cathodes 121 is 1, and the number of the anodes is 2.
Alternatively, the cathode 121 may be a cerium tungsten electrode. The firing anode 122 and the working anode 125 may each be a red copper electrode with a tungsten lining layer 123.
Further, an insulating layer 124 is disposed between the ignition anode 122 and the working anode 125, and the insulating material may be, for example, teflon or the like.
In this embodiment, the throat inner diameters of the ignition anode 122 and the working anode 125 are 6-10mm, such as 6mm, 7mm, 8mm, 9mm, or 10 mm.
Bearing, the low pressure direct current plasma spray gun 12 with the design of series connection anode structure in this application compares with single anode structure plasma gun under the atmospheric condition, and the output characteristic of high voltage, low-current can be realized to the design of series connection anode structure, has prolonged the negative pole 121 and the positive pole life-span of plasma gun. The service life of the anode and the cathode 121 is prolonged by 4 times, the running time reaches 800h, and the risk that impurities are introduced into powder products due to electrode burning loss in the running process of the plasma gun is greatly reduced.
Further, in this embodiment, the number of the powder feeding devices 13 is at least 2, each powder feeding device 13 is horizontally disposed at the plasma jet outlet end of the low-pressure dc plasma spray gun 12, the powder outlet end of each powder feeding device 13 faces the plasma jet, and the included angles of two adjacent powder feeding devices 13 on the same horizontal plane are equal. Specifically, the powder feeder 13 is disposed at the plasma jet outlet of the working anode 125.
For example, when the number of the powder feeding devices 13 is 2, the included angle of the 2 powder feeding devices 13 on the same horizontal plane is 180 ° (see fig. 3). When the number of the powder feeding devices 13 is 3, the included angle of the 3 powder feeding devices 13 on the same horizontal plane is 120 ° (see fig. 4). When the number of the powder feeding devices 13 is 4, the included angle of the 4 powder feeding devices 13 on the same horizontal plane is 90 ° (see fig. 5). The rest of the powder feeding devices 13 are analogized in turn.
The inventor finds that by matching 1 low-pressure direct-current plasma spray gun 12 arranged along the axial direction of the balling tower 11 with at least 2 powder feeding devices 13 with equal included angles on the same horizontal plane, irregular powder can be uniformly fed from different positions of a feeding hole of the balling tower 11, and low-pressure direct-current plasma arcs are adopted as heat sources, so that the powder at each position can obtain the same spraying condition and generate the basically same balling effect, the appearance of the powder at each position is effectively improved, the sphericity and the compactness of the powder are improved, and the preparation of the powder with high sphericity and fine particle size is realized.
Further, the plasma arc spheroidizing powder apparatus 10 in the present embodiment further includes a power supply 14, a control system 15, and a gas supply device 16. The power source 14, control system 15, and gas supply device 16 may all be located outside of the sphering tower 11. The power supply 14 is used for supplying power to the low-voltage direct current plasma spray gun 12, the control system 15 is used for controlling the working state of the low-voltage direct current plasma spray gun 12, and the gas supply device 16 is used for supplying gas to the low-voltage direct current plasma spray gun 12.
As referenced, low pressure dc plasma torch 12 may be connected to power source 14 and control system 15 by a water cable and to gas supply 16 by a plastic gas hose.
Specifically, the gas supply device 16 in the present embodiment includes a hydrogen gas supply device 161 and an argon gas supply device 162.
The hydrogen supply 161 may be, for example, a hydrogen cylinder, and the hydrogen supply 161 is connected to the plasma torch, and specifically, the hydrogen supply 161 is connected to the low-pressure dc plasma torch 12 through a first connection port of the plasma torch.
The argon supply device 162 may be, for example, an argon tower, and the argon supply device 162 is connected to the low pressure dc plasma torch 12 and the spheroidizing tower 11, respectively. Specifically, the argon gas supply device 162 is connected to the low-pressure dc plasma gun through the second connection port of the plasma gun, and is connected to the spheroidizing tower 11 through the first connection port of the spheroidizing tower. Argon gas provided by the argon tower is respectively used as plasma torch gas, powder feeding gas and powder cooling gas. Wherein the connection to the prilling tower 11 can be achieved by backfilling the prilling tower 11 to achieve a certain working pressure.
Further, the spheroidizing tower 11 in this embodiment may have a double-layer water-cooled structure, and the upper portion and the lower portion of the spheroidizing tower 11 are respectively provided with a cooling water outlet 111 and a cooling water inlet 112. By setting the spheroidizing tower 11 to a double-layer water-cooled structure, the spheroidizing tower 11 can have a faster cooling speed, thereby timely cooling the radiant heat of the plasma jet to the spheroidizing tower 11.
Further, the plasma arc spheroidizing powder device 10 further comprises a pressure sensor 171 and a gas sensor 172, and both the pressure sensor 171 and the gas sensor 172 can be arranged outside the spheroidizing tower 11. Among them, the pressure sensor 171 is used for detecting the pressure inside the spheroidizing tower 11, and the gas sensor 172 is used for detecting the contents of oxygen and nitrogen inside the spheroidizing tower 11.
Further, the plasma arc spheroidizing powder device 10 further comprises a vacuum pump assembly 18 arranged outside the spheroidizing tower 11, wherein the vacuum pump assembly 18 is used for vacuumizing the spheroidizing tower 11, and the vacuum pump assembly 18 can be connected with the spheroidizing tower 11 through a stainless steel pipeline. Specifically, the vacuum pump assembly 18 in the present embodiment includes a diffusion pump 181, a roots pump 182, and a mechanical pump 183 connected in this order.
By adopting the three-level pump set for vacuumizing, the inside of the balling tower 11 can reach a higher vacuum state, so that the oxygen content in the balling tower 11 reaches a desired value.
Further, the plasma arc spheroidizing powder apparatus 10 is further provided with a gas filter 19, and the gas filter 19 is provided with a second connecting port of the spheroidizing tower for connecting with the spheroidizing tower 11, a diffusing pump 181 connecting port for connecting with the diffusing pump 181, and a roots pump 182 connecting port for connecting with the roots pump 182.
Further, the plasma arc spheroidizing powder apparatus 10 further includes a powder collecting tank 113 disposed at the bottom of the spheroidizing tower 11 so as to collect the prepared spherical powder.
It should be noted that the structure, the arrangement position, the connection relationship, the function, and the like of the spheroidizing tower 11, which are not disclosed in the present embodiment, can be set according to the prior art, and are not described herein again.
In the plasma arc spheroidizing powder device 10 provided by the embodiment, 1 low-pressure direct-current plasma spray gun 12 arranged along the axial direction of the spheroidizing tower 11 is matched with at least 2 powder feeding devices 13 with equal included angles on the same horizontal plane, so that uniform powder feeding at each position can be ensured, and low-pressure direct-current plasma arcs are adopted as heat sources to improve the appearance of powder at each position and improve the sphericity and compactness of the powder, so that the preparation of high-sphericity fine particle size powder is realized. The plasma arc spheroidizing powder device 10 has the advantages of simple structure, low cost, easy operation, strong adaptability and high efficiency, and is beneficial to preparing powder with better appearance and fluidity.
Example 2
This example provides a method for preparing high sphericity ceramic powder using the plasma arc spheroidizing powder apparatus provided in example 1, which includes the following steps:
the method comprises the following steps: placing a low-pressure direct current plasma spray gun at the top of the vertical spheroidizing tower;
step two: opening the pressure in a spheroidizing tower of a mechanical pump, wherein the pressure is 1000-10000 Pa;
step three: igniting the low-voltage direct-current plasma spray gun, and gradually increasing the current to a set value;
step four: and opening the powder feeding device, and feeding the irregular ceramic powder into the center of the plasma jet. The irregular ceramic powder is heated by the plasma jet and then melted, the molten liquid drops are spheroidized under the action of surface tension, and after flying out of the plasma jet, the molten liquid drops are cooled and solidified to form spherical powder;
step five: the powder was collected in a powder collection tank located at the bottom of the spheronization tower, then sieved and vacuum packed.
Example 3
This example provides a method for preparing titanium and titanium alloy powder with high sphericity by using the plasma arc spheroidizing powder device provided in example 1, which comprises the following steps:
the method comprises the following steps: placing a low-pressure direct current plasma spray gun at the top of the vertical spheroidizing tower;
step two: the pressure in the spheroidizing tower is less than 10 percent when the vacuum pump set is opened-2Pa, backfilling argon through argon supply equipment, and detecting the oxygen content in the spheroidizing tower on line by using an oxygen sensor when the pressure reaches 1000-10000 Pa;
step three: when the oxygen content is lower than 10ppm, igniting the low-pressure direct current plasma spray gun, and gradually increasing the current to a set value by only adopting argon as plasma gas;
step four: and opening the powder feeding device to feed the titanium and titanium alloy powder into the center of the plasma jet. Titanium and titanium alloy powder are heated by plasma jet to be melted, molten liquid drops are spheroidized under the action of surface tension, and are cooled and solidified after flying out of the plasma jet to form spherical powder;
step five: and collecting the powder in a powder collecting tank at the bottom of the spheroidizing tower, passivating, screening and then carrying out vacuum packaging.
Example 4
The present example provides a method for preparing high sphericity W, Mo, Nb, and Ta powders using the plasma arc spheroidizing powder apparatus provided in example 1, wherein the steps can be referred to as follows:
the method comprises the following steps: placing a low-pressure direct current plasma spray gun at the top of the vertical spheroidizing tower;
step two: the pressure in the spheroidizing tower is less than 10 percent when the vacuum pump set is opened-2Pa, backfilling argon through argon supply equipment, and detecting the oxygen content in the spheroidizing tower on line by using an oxygen sensor when the pressure reaches 1000-10000 Pa;
step three: when the oxygen content is lower than 10ppm, igniting the low-pressure direct current plasma spray gun, and gradually increasing the current to a set value;
step four: and opening the powder feeding device to feed the irregular powder into the center of the plasma jet. Heating and melting high-melting-point irregular W, Mo, Nb and Ta powder by plasma jet, spheroidizing molten liquid drops under the action of surface tension, flying out of the plasma jet, cooling and solidifying to form spherical powder;
step five: the powder was collected in a powder collection tank located at the bottom of the spheronization tower, then sieved and vacuum packed.
For reference, in practical application, the process parameters of the low-pressure dc plasma torch may be set as follows: the current is 300-; the hydrogen flow is 0-10L/min, and the hydrogen pressure is 0.4-0.5 MPa. If the powder material reacts with hydrogen, argon is used as the plasma gas only.
Tests prove that after being melted by the low-pressure direct-current plasma torch of the plasma arc spheroidizing powder device provided by the embodiment 1, irregular powder realizes spherical transformation, the surface quality and the flowability of the powder are greatly improved, and the density of the powder is also improved; for active metals such as titanium and titanium alloys, the oxygen content of the powder is less than 1000ppm after plasma treatment. The powder spheroidizing capacity of the plasma arc spheroidizing powder device is more than 2 times of that of a radio frequency plasma spheroidizing device.
In conclusion, the plasma arc spheroidizing powder device provided by the application has the advantages of simple structure, low cost, easiness in operation, strong adaptability and high efficiency, and is favorable for preparing powder with better appearance and flowability.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A plasma arc spheroidizing powder device is characterized by comprising a spheroidizing tower, a low-pressure direct current plasma spray gun and a powder feeding device;
the number of the low-pressure direct current plasma spray guns is only 1, and the low-pressure direct current plasma spray guns are arranged at the top of the balling tower along the axial direction of the balling tower;
the number of the powder feeding devices is at least 2, each powder feeding device is horizontally arranged at a plasma jet flow outlet end of the low-pressure direct current plasma spray gun, a powder outlet end of each powder feeding device faces towards the plasma jet flow, and the included angles of the adjacent two powder feeding devices on the same horizontal plane are equal.
2. The plasma arc spheroidization powder device according to claim 1, wherein the low-pressure direct current plasma spray gun comprises a cathode, an ignition anode and a working anode which are arranged in series, and the powder feeding device is arranged at the position of a plasma jet outlet of the working anode.
3. The plasma arc spheroidizing powder device according to claim 2, wherein the ignition anode and the working anode are both provided with a tungsten lining layer and an insulating layer is arranged between the ignition anode and the working anode; the inner diameters of the throats of the ignition anode and the working anode are 6-10 mm.
4. The plasma arc spheroidization powder apparatus of claim 1, further comprising a power supply located outside the spheroidization tower for supplying power to the low pressure direct current plasma torch, a control system for controlling an operating state of the low pressure direct current plasma torch, and a gas supply device for supplying gas to the low pressure direct current plasma torch.
5. The plasma arc spheroidization powder apparatus of claim 4, wherein the gas supply device comprises a hydrogen gas supply device connected to the low pressure DC plasma torch and an argon gas supply device connected to the low pressure DC plasma torch and the spheroidization tower.
6. The plasma arc spheroidizing powder device according to claim 1, wherein the spheroidizing tower has a double-layer water-cooled structure, and a cooling water inlet and a cooling water outlet are respectively formed at the lower part and the upper part of the spheroidizing tower.
7. The plasma arc spheroidization powder apparatus of claim 1, further comprising a pressure sensor for detecting a pressure inside the spheroidization tower and a gas sensor for detecting contents of oxygen and nitrogen inside the spheroidization tower.
8. The plasma arc spheroidizing powder device of claim 1, further comprising a vacuum pump assembly disposed outside the spheroidizing tower for evacuating the spheroidizing tower, the vacuum pump assembly comprising a diffusion pump, a roots pump, and a mechanical pump connected in series.
9. The plasma arc spheroidized powder device according to claim 8, further comprising a gas filter provided with a spheroidizing tower second connecting port for connection with the spheroidizing tower, a diffusion pump connecting port for connection with the diffusion pump, and a roots pump connecting port for connection with the roots pump.
10. The plasma arc spheroidization powder device of claim 1, further comprising a powder collection tank disposed at the bottom of the spheroidization tower.
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| CN201920832229.XU CN210676946U (en) | 2019-05-31 | 2019-05-31 | Plasma arc spheroidizing powder device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112091229A (en) * | 2020-11-09 | 2020-12-18 | 西安赛隆金属材料有限责任公司 | Device and method for refining particle size of metal powder |
| RU2783096C1 (en) * | 2021-07-23 | 2022-11-08 | Общество с ограниченной ответственностью "АЛИПЛАЗ" | Method for production of metal and ceramic powders with given shape and particle size, using technology of plasma-arc spraying with water screen, and device for its implementation |
| CN116160008A (en) * | 2023-04-25 | 2023-05-26 | 西安优耐特容器制造有限公司 | Device and method for spheroidizing powder by adopting direct-current plasma torch |
-
2019
- 2019-05-31 CN CN201920832229.XU patent/CN210676946U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112091229A (en) * | 2020-11-09 | 2020-12-18 | 西安赛隆金属材料有限责任公司 | Device and method for refining particle size of metal powder |
| CN112091229B (en) * | 2020-11-09 | 2021-02-12 | 西安赛隆金属材料有限责任公司 | Device and method for refining particle size of metal powder |
| RU2783096C1 (en) * | 2021-07-23 | 2022-11-08 | Общество с ограниченной ответственностью "АЛИПЛАЗ" | Method for production of metal and ceramic powders with given shape and particle size, using technology of plasma-arc spraying with water screen, and device for its implementation |
| CN116160008A (en) * | 2023-04-25 | 2023-05-26 | 西安优耐特容器制造有限公司 | Device and method for spheroidizing powder by adopting direct-current plasma torch |
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Effective date of registration: 20221121 Address after: 510000 363 Changxin Road, Tianhe District, Guangzhou, Guangdong. Patentee after: Institute of new materials, Guangdong Academy of Sciences Address before: 510000 363 Changxin Road, Tianhe District, Guangzhou, Guangdong. Patentee before: Institute of materials and processing, Guangdong Academy of Sciences |
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