CN116786830A - Ultrasonic powder making device and its powder making method - Google Patents

Abstract

This application relates to an ultrasonic powder-making device and its powder-making method. The ultrasonic powder-making device includes: a device body with a working chamber; a smelting crucible located in the working chamber, and the smelting crucible is used to contain molten metal; The driving member is located in the working chamber, and the output end of the driving member is connected to the melting crucible for driving the rotation of the melting crucible; the ultrasonic atomizing component is located in the working chamber, and the ultrasonic atomizing component is connected below the melting crucible; and , the standing wave atomizer is connected to the device body, and the standing wave atomizer is located above the edge of the melting crucible. The technical solution of this application effectively solves the technical problem that traditional ultrasonic powder making devices are difficult to obtain fine powder with a diameter of 50 μm and below.

Description

Ultrasonic powder making device and its powder making method

Technical field

The present application relates to the technical field of powder preparation, and in particular to an ultrasonic powder making device and a powder making method thereof.

Background technique

As an important industrial raw material, metal powder is increasingly important in applications in metallurgy, energy, electronics, medical, aerospace and other fields. Ultrasonic atomization uses the principle of high-frequency vibration to separate and break the liquid film, and directly uses the vibration of ultrasonic waves to break the droplets into powder. Due to the good sphericity of the powder prepared by it, the narrow particle size range, and the high quality of the prepared powder, it is increasingly used in the field of powder preparation.

In related technologies, although ultrasonic atomization technology is used to prepare metal powder, it can overcome the natural defects such as irregular powder shapes and the production of hollow powder existing in traditional gas atomization powder making technology. However, limited by the materials and devices of the ultrasonic equipment at the application end, the actual vibration frequency of the ultrasonic equipment is limited to below 40 kHz, making it difficult to obtain fine powder with a diameter of 50 μm and below.

Contents of the invention

The present application provides an ultrasonic powder making device and a powder making method thereof to solve the technical problem that traditional ultrasonic powder making devices are difficult to obtain fine powder with a diameter of 50 μm and below.

To this end, in the first aspect, embodiments of the present application provide an ultrasonic powdering device, including:

The device body has a working chamber;

The smelting crucible is located in the working chamber and is used to contain molten metal;

The driving member is located in the working chamber, and the output end of the driving member is connected to the smelting crucible for driving the smelting crucible to rotate;

An ultrasonic atomization component is located in the working chamber, and the ultrasonic atomization component is connected below the melting crucible; and,

The standing wave atomizer is connected to the device body and is located above the edge of the melting crucible.

In a possible implementation, it also includes a feeding assembly that is installed through the device body. The feeding assembly is located above the smelting crucible and is used to provide the metal material to be processed to the smelting crucible.

In a possible implementation, the feeding component includes a feeding part having a receiving cavity, a switch part movably provided between the device body and the feeding part, and a feeding arm movably provided on the feeding part;

The switch piece has an open state and a closed state. In the open state, the accommodating cavity and the working chamber are connected, and the feeding arm extends into the working chamber to feed the melting crucible; in the closed state, the accommodating cavity and the working chamber are separated. The feeding arm is stored in the accommodation cavity.

In a possible implementation, the replenishing assembly further includes a first heating element, which is disposed through the device body, and the heating end of the first heating element is aligned with the feeding end of the feeding arm when it is in the open state.

In a possible implementation, the ultrasonic atomization component includes an ultrasonic atomizer, a heat insulation piece and a cooling piece. The ultrasonic atomizer is connected to the melting crucible, and the heat insulation piece is provided between the melting crucible and the ultrasonic atomizer. The cooling piece is located on the side of the heat insulation piece away from the smelting crucible, and the cooling piece is used to cool down the ultrasonic atomizer.

In a possible implementation, the cooling component includes a cooler, a liquid inlet pipe and a liquid outlet pipe. The cooler has a cooling liquid containing cavity. Both the liquid inlet pipe and the liquid outlet pipe are connected to the cooling liquid containing cavity, and the liquid inlet pipe is connected to the cooling liquid containing cavity. The tube is located below the outlet tube;

At least part of the ultrasonic atomizer is accommodated in the coolant containing cavity.

In a possible implementation, a second heating element is further included. The second heating element is provided on the periphery of the melting crucible and is used to provide induced eddy current to the melting crucible.

In a possible implementation, the melting crucible includes a crucible body and a flange, the crucible body has an open end, and the flange is disposed at the open end of the crucible body.

In a second aspect, the present application also provides a powder making method applied to the ultrasonic powder making device as described above, which is characterized in that it includes:

Pretreatment: First, vacuum the working chamber of the device body, and stop when the pressure in the working chamber is 6.63*10 ^-3 Pa; then fill the working chamber with inert gas, and ensure that the pressure in the working chamber is less than Or equal to 1MPa;

Control the rotation of the driving part to drive the rotation of the melting crucible;

Control the vibration of the ultrasonic atomization component to vibrate and break the molten metal in the smelting crucible to obtain first-level metal droplets;

The standing wave atomizer is controlled to generate a resonant ultrasonic standing wave field to crush the first-level metal droplets at the node position of the ultrasonic standing wave field to obtain the second-level metal droplets, which are then cooled, solidified, and collected to obtain the target metal powder.

In a possible implementation, the ultrasonic powder making device further includes a feeding component that is passed through the device body. The feeding component includes a feeding piece with a receiving cavity, and a feeding piece that is movably disposed between the device body and the feeding piece. The switch part and the activity are located on the feeding arm of the feeding part. The powder making method also includes:

Control the switch of the feeding component to be in an open state, and at the same time control the feeding arm of the feeding component to feed material into the melting crucible;

Control the feeding arm to retract, and at the same time control the switch piece to be in a closed state.

According to the ultrasonic pulverizing device and the pulverizing method provided by the embodiment of the present application, the ultrasonic pulverizing device includes: a device body with a working chamber; a smelting crucible located in the working chamber, and the smelting crucible is used to contain molten metal. ; The driving member is located in the working chamber, and the output end of the driving member is connected to the melting crucible for driving the rotation of the melting crucible; the ultrasonic atomizing component is located in the working chamber, and the ultrasonic atomizing component is connected below the melting crucible; And, a standing wave atomizer is connected to the device body, and the standing wave atomizer is located above the edge of the melting crucible. The technical solution of this application is to optimize the specific structure of the ultrasonic powder milling device to obtain fine powder with smaller particle size and higher sphericity with a diameter of 50 μm and below, and solve the problem of the actual ultrasonic equipment on the application end of the traditional ultrasonic powder milling device. The vibration frequency is limited to below 40kHz, making it difficult to obtain fine powder with a diameter of 50μm and below. Specifically, the ultrasonic powder making device is configured to include at least a device body, a melting crucible, a driving member, an ultrasonic atomization assembly and a standing wave atomizer. The device body is used to provide an operating environment for atomizing metal, The smelting crucible is used to melt metal and contain molten metal, and the driving member is used to drive the smelting crucible to rotate to provide escape conditions for the molten metal in the smelting crucible; the ultrasonic atomization component is arranged below the smelting crucible, To provide vibration waves to the molten metal, thereby crushing the molten metal and obtaining first-level metal droplets; the standing wave atomizer is set corresponding to the edge of the melting crucible to provide a resonant ultrasonic standing wave field to the molten metal. Break the first-level metal droplets into smaller earphone metal droplets at the pressure node of the standing wave field so that the diameter of the metal droplets is less than or equal to 50 μm. After cooling, metal fine powder with the target particle size is obtained. . In this way, the molten metal is dispersed into fine metal powder with smaller particle size, higher sphericity and better quality through at least two-layer treatment of ultrasonic centrifugal first-level atomization and standing wave non-contact second-level atomization. Meet preparation needs.

Description of the drawings

In order to more clearly explain the embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to describe the embodiments or the prior art. Obviously, for those of ordinary skill in the art, It is said that other drawings can be obtained based on these drawings without exerting creative labor. In addition, in the drawings, the same components are given the same reference numerals, and the drawings are not drawn to actual scale.

Figure 1 is a schematic structural diagram of an ultrasonic powdering device provided by an embodiment of the present application;

Figure 2 is a schematic structural diagram of a smelting crucible provided by an embodiment of the present application;

Figure 3 is a flow chart of the ultrasonic powdering method provided by the embodiment of the present application.

Explanation of reference symbols:

100. Device body; 101. Working chamber;

200. Smelting crucible; 210. Crucible body; 220. Flange;

300. Ultrasonic atomization component; 310. Ultrasonic atomizer; 320. Cooling parts; 321. Cooler; 322. Liquid inlet pipe; 323. Liquid outlet pipe;

400. Standing wave atomizer;

500. Material feeding component; 501. Accommodation cavity; 510. Material feeding component; 520. Feeding arm; 530. First heating element;

600. Second heating element; 700. Driving element;

10. Molten metal liquid; 11. Primary metal liquid droplets; 12. Secondary metal liquid droplets; 20. Mechanical pump; 30. Diffusion pump.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments These are part of the embodiments of this application, but not all of them. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of this application.

Referring to Figures 1 and 2, embodiments of the present application provide an ultrasonic powdering device, which includes: a device body 100, a melting crucible 200, a driving member 700, an ultrasonic atomization assembly 300, and a standing wave atomizer 400.

The device body 100 has a working chamber 101;

The smelting crucible 200 is located in the working chamber 101. The smelting crucible is used to contain molten metal 10;

The driving member 700 is located in the working chamber 101. The output end of the driving member 700 is connected to the melting crucible 200 and is used to drive the melting crucible 200 to rotate;

The ultrasonic atomization assembly 300 is located in the working chamber 101, and the ultrasonic atomization assembly 300 is connected below the melting crucible 200; and,

The standing wave atomizer 400 is connected to the device body 100 and is located above the edge of the melting crucible 200 .

In this embodiment, by optimizing the specific structure of the ultrasonic powder milling device, fine powder with smaller particle size and higher sphericity with a diameter of 50 μm and below is obtained to solve the problem of the actual ultrasonic equipment on the application end of the traditional ultrasonic powder milling device. The vibration frequency is limited to below 40kHz, making it difficult to obtain fine powder with a diameter of 50μm and below.

Specifically, the ultrasonic powder making device is configured to include at least a device body 100, a melting crucible 200, a driving member 700, an ultrasonic atomization assembly 300, and a standing wave atomizer 400. The device body 100 is used to provide mist. The smelting crucible 200 is used to melt metal and contain the molten metal 10; the driving member 700 is used to drive the smelting crucible 200 to rotate, so that the molten metal 10 in the smelting crucible 200 is subjected to a certain centrifugal force. Under the action of the centrifugal force, the molten metal 10 flows to the edge of the smelting crucible 200, providing escape conditions for the molten metal in the smelting crucible 200; the ultrasonic atomization assembly 300 is disposed below the smelting crucible 200 to provide The molten metal 10 provides vibration waves, thereby crushing the molten metal 10 and obtaining first-level metal droplets 11; the standing wave atomizer 400 is arranged corresponding to the edge of the melting crucible 200 to provide the molten metal 10 with resonant ultrasound. In the standing wave field, the first-level metal droplets 11 are broken into smaller earphone metal droplets at the pressure node position of the standing wave field, so that the diameter of the metal droplets is less than or equal to 50 μm, and the target particle size is obtained after cooling. Fine metal powder. In this way, the molten metal 10 is at least dispersed into fine metal powder with smaller particle size, higher sphericity and better quality through the double-layer treatment of ultrasonic centrifugal primary atomization and standing wave non-contact secondary atomization. , to meet preparation needs.

In one example, the smelting crucible 200 can be disposed near the top of the device body 100 through some support structures such as brackets/support plates. On the one hand, it facilitates subsequent replenishment, and on the other hand, it can provide crushed metal droplets. Provide a cooling path long enough to fully cool the metal droplets to form metal particles.

In one example, the driving member 700 is a driving motor, which can drive the melting crucible 200 to rotate, so that the molten metal 10 moves toward the periphery of the melting crucible 200 under the action of centrifugal force. Of course, in other embodiments, the melting crucible 200 can also be driven and rotated through mechanical structures such as gears and racks.

In a possible implementation, it also includes a feeding assembly 500 that is passed through the device body 100 . The feeding assembly 500 is located above the smelting crucible 200 and is used to provide the smelting crucible 200 with metal materials to be processed.

In this embodiment, the specific structure of the ultrasonic powder-making device is further optimized to enrich the functions of the ultrasonic powder-making device, so that the ultrasonic powder-making device can continuously atomize and make powder without turning on the furnace. Specifically, the ultrasonic powder making device is configured as a combined component including a device body 100, a melting crucible 200, an ultrasonic atomization assembly 300, a standing wave atomizer 400 and a feeding assembly 500. The feeding assembly 500 is configured on the device. The main body 100 is used to provide metal materials to be processed to the smelting crucible 200 to realize continuous powder making by the ultrasonic powder making device.

In one possible implementation, the filling assembly 500 includes a filling piece 510 having a receiving cavity 501, a switch member (not shown in the figure) movably disposed between the device body 100 and the filling piece 510, and a movable The feeding arm 520 provided on the feeding piece 510;

The switch member has an open state and a closed state. In the open state, the accommodation cavity 501 is connected with the working chamber 101, and the feeding arm 520 extends into the working chamber 101 to feed the melting crucible 200; in the closed state, the accommodation cavity 501 It is separated from the working chamber 101 and the feeding arm 520 is stored in the accommodation cavity 501 .

In this embodiment, the specific structure of the feeding component 500 is optimized. Specifically, the feeding assembly 500 is configured as a combined component including at least a feeding part 510, a switch part and a feeding arm 520. The device body 100 is provided with a through hole connected to the working chamber 101, and the feeding part 510 is The through hole should be connected to the outside of the device body 100 . The switch member is movable between the device body 100 and the filling member 510 to avoid opening the through hole so that the accommodating cavity 501 and the working chamber 101 are connected; or to cover and close the through hole to connect the accommodating cavity 501 and the working chamber 101. Room 101 partition. The feeding arm 520 is movably provided on the feeding piece 510 and is used to feed the metal material to be processed in the accommodating cavity 501 into the melting crucible 200 . In this way, when replenishing materials is required, there is no need to open the furnace to load materials, and only need to open the switch member, and at the same time extend the feeding arm 520 into the working chamber 101 to feed the melting crucible 200 . The entire feeding operation is simple and easy to operate, which greatly improves the continuous powdering efficiency of the ultrasonic powdering device.

In an example, the ultrasonic powder making device further includes a mechanical pump 20 and a diffusion pump 30. Both the mechanical pump 20 and the diffusion pump 30 can be connected to the working chamber 101 of the device body 100 to provide a vacuum environment for the working chamber 101. Fill with protective gas, etc. Of course, the mechanical pump 20 and the diffusion pump 30 can also be connected with the accommodating cavity 501 of the feeding assembly 500 to provide the accommodating cavity 501 with a vacuum environment, fill it with protective gas, etc.

In a possible implementation, the replenishing assembly 500 further includes a first heating element 530 , which is inserted through the device body 100 , and the heating end of the first heating element 530 is aligned with the feeding arm in the open state. The feeding end of 520.

In this embodiment, the specific structure of the replenishing assembly 500 is further optimized to realize the preparation of refractory metals and reactive metals by the ultrasonic powder making device and improve the applicable scope of the ultrasonic powder making device. Specifically, the feeding assembly 500 is configured as a combined component including at least a feeding piece 510, a switch piece, a feeding arm 520, and a first heating piece 530. The first heating piece 530 can leave the feeding arm 520 and not reach the melting point. The metal material to be processed in the crucible 200 is heated with auxiliary heat, which increases the temperature of the metal material to be processed entering the smelting crucible 200 and reduces the melting difficulty of the smelting crucible 200 .

In one example, the first heating element 530 is a high-energy gun such as an arc gun or a plasma gun. The high-energy gun is installed on the top of the device body 100 , and the operating end of the high-energy gun is located outside the device body 100 , and its heating end is located in the working chamber 101 .

In a possible implementation, the ultrasonic atomizer assembly 300 includes an ultrasonic atomizer 310, a heat insulation member (not shown in the figure) and a cooling member 320. The ultrasonic atomizer 310 is connected to the melting crucible 200, and the heat insulation member 320 is connected to the melting crucible 200. The cooling piece 320 is arranged between the melting crucible 200 and the ultrasonic atomizer 310 . The cooling piece 320 is arranged on the side of the heat insulation piece away from the melting crucible 200 . The cooling piece 320 is used to cool down the ultrasonic atomizer 310 .

In this embodiment, the specific structure of the ultrasonic atomization component 300 is optimized. Specifically, the ultrasonic atomizer assembly 300 is configured as a combined component including at least an ultrasonic atomizer 310, a heat insulation member, and a cooling member 320. The ultrasonic atomizer 310 is connected to the lower end of the melting crucible 200 and provides the melting crucible with The pot 200 provides the first vibration wave to crush the molten metal 10 in the smelting crucible 200; the heat insulation member is configured between the ultrasonic atomizer 310 and the smelting crucible 200 to reduce the heat at the smelting crucible 200. is transmitted to the ultrasonic atomizer 310, causing overheating failure of the ultrasonic atomizer 310; the cooling member 320 is arranged outside the ultrasonic atomizer 310, and is used to dissipate heat and cool down the ultrasonic atomizer 310, and improve the performance of the ultrasonic atomizer 310. service life.

In a possible implementation, the cooling component 320 includes a cooler 321, a liquid inlet pipe 322, and a liquid outlet pipe 323. The cooler 321 has a cooling liquid receiving cavity, and the liquid inlet pipe 322 and the liquid outlet pipe 323 are both connected to the cooling liquid. accommodating cavity, and the liquid inlet pipe 322 is located below the liquid outlet pipe 323;

At least part of the ultrasonic atomizer 310 is accommodated in the cooling liquid containing cavity.

In this embodiment, the specific structure of the cooling element 320 is further optimized. Specifically, the cooling element 320 is configured as a combined component including at least a cooler 321, a liquid inlet pipe 322, and a liquid outlet pipe 323. The cooling liquid containing cavity of the cooler 321 contains cooling liquid. The ultrasonic atomizer 310 At least part of the cooling liquid of the cooler 321 is inserted into the cooling liquid of the cooler 321 to cool the ultrasonic atomizer 310 through heat conduction; the liquid inlet pipe 322 is connected to the cooling liquid containing cavity to replenish the cooling liquid containing cavity with a lower temperature. the cooling liquid; the liquid outlet pipe 323 is connected to the cooling liquid receiving cavity to send the liquid with a high temperature after heat exchange out of the cooler 321. In this way, the ultrasonic atomizer 310 is cooled through liquid cooling.

In one example, multiple liquid outlet pipes 323 are provided, and multiple liquid inlet pipes 322 are provided, so as to shorten the cooling liquid replacement time and improve the liquid replacement efficiency.

In a possible implementation, a second heating element 600 is also included. The second heating element 600 is provided on the periphery of the melting crucible 200 and is used to provide induced eddy current to the melting crucible 200 .

In this embodiment, the specific structure of the ultrasonic powder making device is further optimized. Specifically, the ultrasonic powder making device is configured as a combined component including a device body 100, a melting crucible 200, an ultrasonic atomization assembly 300, a standing wave atomizer 400 and a second heating element 600. The second heating assembly is configured on The outside of the smelting crucible 200 is used to heat the metal material to be processed in the smelting crucible 200 . For example, but not limited to, the second heating element 600 is a suspended melting induction coil.

In a possible implementation, the melting crucible 200 includes a crucible body 210 and a flange 220 , the crucible body 210 has an open end, and the flange 220 is disposed at the open end of the crucible body 210 .

In this embodiment, the specific structure of the melting crucible 200 is further optimized. Specifically, the smelting crucible 200 is configured as a composite member having a crucible body 210 and a flange 220. The flange 220 is configured at the open end of the crucible body 210 and forms a vertically upward limiting convex ring at the open end. , to prevent the molten metal from breaking away from the crucible body and forming irregular solid metal blocks/large metal particles and other impurities.

Referring to Figure 3, in a second aspect, the present application also provides a powder making method applied to the ultrasonic powder making device as described above, which is characterized in that it includes:

Step S1, preprocessing: first vacuum the working chamber 101 of the device body 100, and stop when the pressure in the working chamber 101 is 6.63*10 ^-3 Pa; then fill the working chamber 101 with inert gas, And ensure that the pressure in the working chamber 101 is less than or equal to 1MPa;

Step S2, control the rotation of the driving member 700 to drive the melting crucible 200 to rotate;

Step S3, control the vibration of the ultrasonic atomization component 300 to disperse and break the molten metal 10 in the smelting crucible 200 to obtain first-level metal droplets 11;

Step S4, control the standing wave atomizer 400 to generate a resonant ultrasonic standing wave field to crush the first-level metal droplets 11 at the node position of the ultrasonic standing wave field to obtain the second-level metal droplets 12, which are cooled, solidified, and collected. Obtain target metal powder.

In this embodiment, the pulverizing method of the ultrasonic pulverizing device is optimized to achieve crushing of the molten metal 10 through at least two-layer processing of ultrasonic centrifugal primary atomization and standing wave non-contact secondary atomization. , to form small metal droplets within the target particle size range. Specifically, the ultrasonic atomization component 300 is first used to provide the first vibration wave to the molten metal to break the molten metal 10 and obtain the first-level metal droplets 11; then, the standing wave atomizer 400 is used to atomize the first-level metal. The droplets 11 undergo secondary resonance, causing the first-level metal droplets 11 to be broken into smaller-sized second-level metal droplets 12 at the pressure node of the standing wave field, and are scattered, cooled, and collected downward to achieve the purpose mineral powder.

In a possible implementation, the ultrasonic powder making device further includes a feeding component 500 that is passed through the device body 100. The feeding component 500 includes a feeding piece 510 having a receiving cavity 501, and is movably provided on the device body 100 and The switching parts and activities between the feeding parts 510 are located on the feeding arms 520 of the feeding parts 510. The powder making method also includes:

Step S5, control the switch member of the feeding assembly 500 to be in an open state, and simultaneously control the feeding arm 520 of the feeding assembly 500 to feed materials into the melting crucible 200;

In step S6, the feeding arm 520 is controlled to retract, and the switch member is controlled to be in a closed state.

In this embodiment, a feeding component 500 is added to realize continuous feeding powder making of the ultrasonic powder making device without turning on the furnace, thereby improving the powder making efficiency and output of the ultrasonic powder making device. Specifically, when replenishing is required, the switch that controls the replenishing assembly 500 is in an open state. At this time, the feeding arm 520 of the replenishing assembly 500 is controlled to feed the metal material to be processed into the melting crucible 200 to achieve continuous processing. Start the furnace to replenish the materials; after the replenishment is completed, retract the feeding arm 520 to accommodate it in the accommodating cavity 501 of the replenishing member 510. At the same time, the switch member is controlled to be in a closed state to isolate the accommodating cavity 501 and the operating chamber 101. , so that the working chamber 101 has better environmental stability and sealing performance.

In a specific example, the specific steps of the powder-making method applied to the ultrasonic powder-making device as described above are as follows:

①First put metal raw materials into the melting crucible and set aside;

② Then use the mechanical pump 20 and the diffusion pump 30 to evacuate the working chamber 101. When the pressure in the working chamber 101 is 6.63*10 ^-3 Pa or below, close the mechanical pump 20 and the diffusion pump 30; then The working chamber 101 is filled with high-purity inert gas, and the pressure in the working chamber 101 is ensured to be less than or equal to 1MPa. Among them, inert gas serves as a sound wave energy transmission medium on the one hand, and as a protective gas during metal smelting on the other hand.

③ Melt the metal raw material in the smelting crucible 200 through the suspended smelting induction coil; then turn on the motor to rotate the smelting crucible 200, thereby driving the molten metal 10 in the smelting crucible 200 to rotate, and move toward the smelting crucible 200 under the action of the rotating centrifugal force. peripheral flow. Among them, the magnetic levitation effect of the suspended smelting induction coil can also overcome the gravity of the molten metal 10 to a certain extent and improve the effect of the molten metal 10 flowing toward the periphery of the smelting crucible 200 .

④ Turn on the ultrasonic atomizer 310 to vibrate the smelting crucible 200, thereby crushing the molten metal 10 in the smelting crucible 200 to obtain first-level metal droplets 11. At this time, the smelting crucible 200 is in contact with the ultrasonic atomizer 310. In order to prevent the heat of the smelting crucible 200 from being transferred to the ultrasonic atomizer 310 and causing overheating failure of the ultrasonic atomizer 310, a cooling device is provided around the ultrasonic atomizer 310. 320 for cooling.

⑤ Turn on the standing wave atomizer 400 to generate a resonant ultrasonic standing wave field at the flange 220 of the smelting crucible 200, so that the first-level metal droplets 11 are broken into smaller two pieces at the pressure node position of the standing wave field. Level 12 metal droplets are scattered downwards from the smelting crucible 200.

⑥ The secondary metal droplets 12 fly in the working chamber 101 and are cooled and solidified into metal powder with high sphericity and small particle size, and are collected by the powder collecting tank at the bottom of the device body 100 .

⑦ When it is necessary to continuously produce metal powder, in order to improve the production efficiency and output of metal powder, the feeding assembly 500 can be used to feed the smelting crucible to achieve continuous production without opening the furnace.

It should be noted that in this article, relational terms such as “first” and “second” are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply these There is no such actual relationship or sequence between entities or operations. Furthermore, the terms "comprises," "comprises," or any other variations thereof are intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus that includes a list of elements includes not only those elements, but also those not expressly listed other elements, or elements inherent to the process, method, article or equipment. Without further limitation, an element defined by the statement "comprises a..." does not exclude the presence of additional identical elements in a process, method, article, or apparatus that includes the stated element.

The above descriptions are only specific embodiments of the present application, enabling those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be practiced in other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims (10)

1. An ultrasonic powder making device, characterized in that it includes: The device body has a working chamber; A smelting crucible is located in the working chamber, and the smelting crucible is used to contain molten metal; A driving member is provided in the working chamber, and the output end of the driving member is connected to the smelting crucible for driving the smelting crucible to rotate; An ultrasonic atomization component is provided in the working chamber, and the ultrasonic atomization component is connected below the melting crucible; and, A standing wave atomizer is connected to the device body, and the standing wave atomizer is located above the edge of the melting crucible. 2. The ultrasonic powder making device according to claim 1, further comprising a feeding assembly that is disposed on the device body, the feeding assembly is located above the smelting crucible and is used to feed the smelting crucible. The smelting crucible provides metal materials to be processed. 3. The ultrasonic powder making device according to claim 2, wherein the feeding component includes a feeding part having a receiving cavity, and a switch movably arranged between the device body and the feeding part. The parts and activities are provided on the feeding arm of the feeding part; The switch member has an open state and a closed state. In the open state, the accommodation cavity and the working chamber are connected, and the feeding arm extends into the working chamber to feed the melting crucible; In the closed state, the accommodating cavity and the working chamber are separated, and the feeding arm is stored in the accommodating cavity. 4. The ultrasonic powder making device according to claim 3, wherein the feeding component further includes a first heating element, the first heating element is disposed on the device body, and the first heating element The heating end is aligned with the feeding end of the feeding arm when it is in the open state. 5. The ultrasonic powder making device according to claim 1, wherein the ultrasonic atomization component includes an ultrasonic atomizer, a heat insulation component and a cooling component, and the ultrasonic atomizer is connected to the melting crucible. , the heat insulation piece is provided between the melting crucible and the ultrasonic atomizer, the cooling piece is provided on the side of the heat insulation piece away from the melting crucible, and the cooling piece is used for Cool down the ultrasonic nebulizer. 6. The ultrasonic powder making device according to claim 5, wherein the cooling member includes a cooler, a liquid inlet pipe and a liquid outlet pipe, the cooler has a cooling liquid receiving cavity, and the liquid inlet pipe Both the liquid outlet pipe and the liquid outlet pipe are connected to the coolant containing cavity, and the liquid inlet pipe is located below the liquid outlet pipe; At least part of the ultrasonic atomizer is accommodated in the cooling liquid containing cavity. 7. The ultrasonic powder making device according to claim 1, further comprising a second heating element, the second heating element is provided on the periphery of the smelting crucible and is used to provide the smelting crucible with Induced eddy currents. 8. The ultrasonic powder making device according to claim 7, wherein the smelting crucible includes a crucible body and a flange, the crucible body has an open end, and the flange is disposed on the top of the crucible body. at the open end. 9. A powder-making method applied to the ultrasonic powder-making device according to any one of claims 1 to 8, characterized in that it includes: Pretreatment: First, vacuum the working chamber of the device body, and stop when the pressure in the working chamber is 6.63*10 ^-3 Pa; then fill the working chamber with inert gas, and ensure that the The pressure in the working chamber is less than or equal to 1MPa; Control the rotation of the driving part to drive the rotation of the melting crucible; Control the vibration of the ultrasonic atomization component to vibrate and break the molten metal in the smelting crucible to obtain first-level metal droplets; The standing wave atomizer is controlled to generate a resonant ultrasonic standing wave field to crush the first-level metal droplets at the node position of the ultrasonic standing wave field to obtain the second-level metal droplets, which are then cooled, solidified, and collected to obtain the target metal powder. 10. The powder-making method according to claim 9, characterized in that the ultrasonic powder-making device further includes a feeding component that is passed through the device body, and the feeding component includes a feeding component with an accommodating cavity. components, a switch component movable between the device body and the feeding component, and a feeding arm movable between the feeding component, the powder making method further includes: Control the switch member of the feeding component to be in an open state, and simultaneously control the feeding arm of the feeding component to feed material into the melting crucible; The feeding arm is controlled to retract, and the switch member is controlled to be in the closed state.