Metal powder preparation device

Abstract

The utility model discloses a metal powder preparation device. The metal powder preparation device comprises a crucible, a circulation component and a water cooling component, wherein a smelting cavity is formed in the crucible, and a matching hole communicated with the smelting cavity is formed in the bottom of the crucible; the circulation component is arranged at the bottom of the crucible, at least part of the circulation component is contained in the matching hole, a circulation channel communicated with the smelting cavity is formed in the circulation component, and the section of the circulation channel is gradually reduced in the direction away from the smelting cavity; the water cooling component is arranged in the matching hole and arranged on the periphery of the circulation component in a sleeving mode, and a cooling liquid flow channel is formed in the water cooling component. According to the metal powder preparation device, the water cooling part is sleeved on the periphery of the circulation part, so that the cooling effect of the water cooling part on the circulation part is improved, a layer of solidified film can be formed between the circulation part and a metal solution, and continuous and good preparation of metal monodisperse particles with high melting point, high reactivity and high wettability is realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of metal powder preparation, especially to a metal powder preparation device. BACKGROUND

[0002] Monodisperse metal powder is a kind of powder material with special purpose, and its machining range is between mechanical machining and nanometer machining, and is widely used in additive manufacturing, microelectronic packaging, aerospace, new energy, medical military, injection molding, semiconductor integrated circuit and various fields.

[0003] In the related art, the microporous part for preparing monodisperse metal powder is prone to react with metal with high reaction activity and high wettability, and thus continuous and good preparation of metal monodisperse particles cannot be realized. SUMMARY

[0004] The utility model aims at at least one of the technical problems existing in the prior art. To this end, one object of the utility model is to provide a metal powder preparation device. According to the metal powder preparation device of the utility model, a water cooling part is sleeved on the outer periphery of the flow part, the cooperation area of the water cooling part and the flow part is increased, the cooling effect of the water cooling part on the flow part is improved, a solidification film can be formed between the flow part and the metal solution, and continuous and good preparation of metal monodisperse particles with high melting point, high reaction activity and high wettability can be realized.

[0005] According to the metal powder preparation device of the utility model, the metal powder preparation device comprises a crucible, a flow part and a water cooling part, a smelting cavity is formed in the crucible, a cooperation hole is arranged at the bottom of the crucible and communicates with the smelting cavity; the flow part is arranged at the bottom of the crucible, at least part of the flow part is accommodated in the cooperation hole, the flow part forms a flow channel communicating with the smelting cavity, and the cross section of the flow channel gradually decreases in the direction away from the smelting cavity; the water cooling part is arranged in the cooperation hole and sleeved on the outer periphery of the flow part, and a cooling liquid flow channel is formed in the water cooling part.

[0006] The metal powder preparation device is provided with a smelting cavity in a crucible, which can smelt metal raw materials and temporarily store the generated metal solution, the bottom of the crucible is provided with a matching hole, the matching hole is provided with a flow-through component, the flow-through component is formed with a flow-through channel communicated with the smelting cavity, the smelted metal liquid can smoothly enter the flow-through channel and flow along the flow-through channel, the cross section of the flow-through channel gradually decreases in the direction away from the smelting cavity, which helps to generate a pressure difference when the metal liquid passes through, accelerates the flow of the liquid, and makes the metal solution refine the metal liquid in the form of spraying or dripping, thereby providing necessary conditions for the preparation of metal powder, and meanwhile, it helps to reduce the risk of blockage and improve the operation stability and reliability of the metal powder preparation device. The water cooling component is sleeved on the outer periphery of the flow-through component, and the water cooling component is formed with a cooling liquid flow channel, and the cooling liquid flow channel can flow through cooling liquid, which can quickly absorb and carry away the heat of the metal solution in the flow-through channel, so that the rapid cooling of the metal solution helps the formation of metal powder, and meanwhile, the arrangement of the water cooling component makes the flow-through component in a low-temperature state during the preparation of the metal powder, when the high-temperature metal solution flows into the flow-through channel, a solidified film is formed between the flow-through component and the metal solution, so that the high-temperature metal melt and the low-temperature flow-through component do not react and do not wet, thereby realizing continuous and good preparation of single-dispersed particles of high-melting-point, high-reactivity and high-wettability metals.

[0007] According to an embodiment of the present application, the water cooling component includes: a main body part and a connecting pipe, the main body part is annularly configured to be sleeved on the outer periphery of the flow-through component, the inner surface of the inner circumferential wall of the main body part is limitedly matched with the flow-through component, and the cooling liquid flow channel is formed around the main body part; the connecting pipe is connected with the outer circumferential wall of the main body part, the connecting pipe is formed with a connecting channel communicated with the cooling liquid flow channel, and the connecting channel is adapted to be connected with a water source.

[0008] According to an embodiment of the present application, the inner surface of the inner circumferential wall of the main body part is formed with a first limiting part, the outer circumferential wall of the flow-through component is formed with a second limiting part, the second limiting part is limitedly matched with the first limiting part to adapt the flow-through component to be detachably arranged in the main body part.

[0009] According to an embodiment of the present application, the flow-through component includes: a matching ring and a convex part, the matching ring is accommodated in the main body part, the outer periphery of the matching ring is formed with the second limiting part, and part of the flow-through channel is formed on the matching ring; the convex part is arranged on the side of the matching ring away from the crucible, the convex part is configured as a taper protruding from the bottom surface of the matching ring, another part of the flow-through channel is formed in the convex part, and the end of the convex part is formed with an outlet of the flow-through channel.

[0010] According to one embodiment of the present application, the first limiting part is configured as a first thread formed on the inner circumferential wall of the main body part, and the second limiting part is configured as a second thread formed on the outer periphery of the fitting ring.

[0011] According to one embodiment of the present application, the induction coil is configured as a hollow tube, and the inside of the induction coil is in communication with the cooling liquid flow channel.

[0012] According to one embodiment of the present application, the metal powder preparation device further comprises a power supply device, the power supply device is provided with a first interface and a second interface suitable for leading out cooling liquid and electric connection, one of the first interface and the second interface is connected with the communication pipe, and the other of the first interface and the second interface is suitable for being connected with the other end of the induction coil.

[0013] According to one embodiment of the present application, the crucible is formed with a avoiding hole for avoiding the communication pipe and the induction coil.

[0014] According to one embodiment of the present application, the metal powder preparation device further comprises an actuating rod, the actuating rod is movably arranged relative to the crucible, and the moving direction of the actuating rod is opposite to the fitting hole and can be selectively extended into the crucible.

[0015] The additional aspects and advantages of the present application will be partially given in the following description, partially will become obvious from the following description, or will be understood through the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0016] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings in which:

[0017] Figure 1 is a structural diagram of a metal powder preparation device according to one embodiment of the present application;

[0018] Figure 2 is a structural diagram of a water cooling part according to one embodiment of the present application;

[0019] Figure 3 is a structural diagram of a crucible according to one embodiment of the present application;

[0020] Figure 4 is a structural diagram of a flow-through part according to one embodiment of the present application;

[0021] Figure 5 is an assembly diagram of the flow-through part and the water cooling part according to one embodiment of the present application.

[0022] REFERENCE NUMERALS

[0023] The metal powder preparation device 1;

[0024] The crucible 11, the smelting cavity 111, the matching hole 112;

[0025] The flow-through component 12, the matching ring 121, the second limiting part 1211, the convex part 122, the flow-through passage 123, the outlet 124;

[0026] The water-cooling component 13, the main body part 131, the first limiting part 1311, the communication pipe 132, the cooling liquid flow channel 133;

[0027] The induction coil 14;

[0028] The power supply device 15, the first interface 151, the second interface 152;

[0029] The actuating rod 16. DETAILED DESCRIPTION

[0030] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.

[0031] In the related art, the micropore component for preparing monodisperse metal powder is prone to react with metals having high reactivity and high wettability, and thus continuous and good preparation of metal monodisperse particles cannot be achieved.

[0032] The metal powder preparation device according to the embodiments of the present application is described below with reference to Figures 1-5 The metal powder preparation device according to the embodiments of the present application is described below with reference to

[0033] The metal powder preparation device 1 according to the present application comprises a crucible 11, a flow-through component 12 and a water-cooling component 13. The crucible 11 is internally formed with a smelting cavity 111 and is provided at the bottom thereof with a matching hole 112 in communication with the smelting cavity 111. The flow-through component 12 is arranged at the bottom of the crucible 11, at least a part of the flow-through component 12 is accommodated in the matching hole 112, the flow-through component 12 is formed with a flow-through passage 123 in communication with the smelting cavity, the cross section of the flow-through passage 123 gradually decreases in the direction away from the smelting cavity. The water-cooling component 13 is arranged in the matching hole 112 and is sleeved on the outer periphery of the flow-through component 12, and the water-cooling component 13 is internally formed with a cooling liquid flow channel 133.

[0034] The metal powder preparation device 1 is provided with a smelting cavity 111 in the crucible 11, which can smelt metal raw materials and temporarily store the generated metal solution, the bottom of the crucible 11 is provided with a matching hole 112, the matching hole 112 is provided with a flow-through component 12, the flow-through component 12 is formed with a flow-through channel 123 communicated with the smelting cavity 111, the smelted metal liquid can smoothly enter the flow-through channel 123 and flow along the flow-through channel 123, the cross section of the flow-through channel 123 gradually decreases in the direction away from the smelting cavity, which helps to generate a pressure difference when the metal liquid passes through, accelerates the flow of the liquid, and makes the metal solution refine the metal liquid in the form of spraying or dripping, provides necessary conditions for the preparation of metal powder, at the same time, also helps to reduce the risk of blockage, improves the operation stability and reliability of the metal powder preparation device 1. The water cooling component 13 is sleeved on the outer periphery of the flow-through component 12, and the water cooling component 13 is formed with a cooling liquid flow channel 133, and the cooling liquid flow channel 133 can flow through cooling liquid, which can quickly absorb and take away the heat of the metal solution in the flow-through channel 123, so that the rapid cooling of the metal solution helps the formation of metal powder, at the same time, the setting of the water cooling component 13 makes the flow-through component 12 in a low temperature state during the preparation of the metal powder, when the high-temperature metal solution flows into the flow-through channel 123, a solidified film is formed between the flow-through component 12 and the metal solution, so that the high-temperature metal melt and the low-temperature flow-through component 12 do not react and do not wet, thereby realizing continuous and good preparation of single dispersed particles of high melting point, high reactivity and high wettability.

[0035] According to one embodiment of the present application, the water cooling component 13 comprises: a main body 131 and a connecting pipe 132, the main body 131 is annularly sleeved on the outer periphery of the flow-through component 12, the inner surface of the inner wall of the main body 131 is limitedly matched with the flow-through component 12, and the main body 131 is formed with a cooling liquid flow channel 133 arranged around; the connecting pipe 132 is connected with the outer wall of the main body 131, and the connecting pipe 132 is formed with a connecting channel communicated with the cooling liquid flow channel 133, and the connecting channel is suitable for being connected with a water source.

[0036] The main body part 131 of the water cooling part 13 is designed as an annular shape and tightly sleeved on the outer periphery of the flow passing part 12. The matching area of the water cooling part 13 and the flow passing part 12 is increased, so that the cooling liquid can take away the heat generated by the flow passing part 12 when the metal liquid passes through, and high-efficiency cooling is realized. The annular cooling liquid flow channel 133 formed in the main body part 131 enables the cooling liquid to be uniformly distributed and flowed, further improving the cooling efficiency, and also helping to reduce thermal stress, prolong the service life of the flow passing part 12, and ensure that the metal powder has good quality in the rapid cooling forming process. The connecting passage formed in the communicating pipe 132 is suitable for being connected with a water source, so that the water cooling part 13 can be conveniently connected with an existing cooling water system or an independent water source, and the process of adding the cooling liquid to the water cooling part 13 is simplified through the communicating pipe 132.

[0037] According to an embodiment of the present application, the inner surface of the inner peripheral wall of the main body part 131 is formed with a first limiting part 1311, and the outer peripheral wall of the flow passing part 12 is formed with a second limiting part 1211, and the second limiting part 1211 is limited and matched with the first limiting part 1311 to adapt the flow passing part 12 to be detachably arranged in the main body part 131.

[0038] The metal powder preparation device 1 realizes the assembly of the water cooling part 13 and the flow passing part 12 and improves the stability of the assembly of the water cooling part 13 and the flow passing part 12 by arranging the first limiting part 1311 on the inner surface of the inner peripheral wall of the main body part 131 and arranging the second limiting part 1211 on the outer peripheral wall of the flow passing part 12, and the flow passing part 12 can be detachably arranged in the main body part 131, which greatly facilitates the disassembly and maintenance work of the metal powder preparation device 1. For example, when the flow passing part 12 needs to be cleaned, replaced or repaired, the disassembly work of the flow passing part 12 can be easily completed by simply disconnecting the matching relationship between the first limiting part 1311 and the second limiting part 1211. The detachable flow passing part 12 enables the metal powder preparation device 1 to quickly replace the flow passing part 12 of different specifications or materials according to different preparation requirements or process requirements, which helps to improve the flexibility and applicability of the device, so that the metal powder preparation device 1 can cope with more diversified preparation tasks.

[0039] According to an embodiment of the present application, the flow passing part 12 comprises a matching ring 121 and a convex part 122, the matching ring 121 is accommodated in the main body part 131, the outer periphery of the matching ring 121 is formed with the second limiting part 1211, and part of the flow passing channel 123 is formed on the matching ring 121; the convex part 122 is arranged on the side of the matching ring 121 away from the crucible 11, the convex part 122 is configured as a taper protruding from the bottom surface of the matching ring 121, another part of the flow passing channel 123 is formed in the convex part 122, and the end of the convex part 122 is formed with the outlet 124 of the flow passing channel 123.

[0040] The outer periphery of the fitting ring 121 is provided with a second limiting part 1211 matched with the first limiting part 1311 on the inner periphery surface of the main body part 131, and the limiting matching between the fitting ring 121 and the main body part 131 ensures the stability of the assembly of the flow component 12 and the water cooling component 13, prevents the shaking of the cold metal solution during the flow, and can improve the quality of the metal powder prepared by the metal powder preparation device 1.

[0041] It should be noted that the inside of the main body part 131 in the cooling liquid flow channel 133 means that the inside of the structure of the main body part 131 is hollow, and the hollow area is the cooling liquid flow channel 133; and the inside of the fitting ring 121 received in the main body part 131 means the inner ring position of the main body part 131, that is, the main body part 131 is annular, and the inner ring or inner periphery forms a space for assembling the fitting ring 121. This space is not a structure of the main body part 131, but a fitting space formed by the shape of the main body part 131.

[0042] The convex part 122 is designed as a taper protruding from the bottom surface of the fitting ring 121, the fitting ring 121 forms part of the flow channel 123 inside, the convex part 122 has an inner taper surface and forms another part of the flow channel 123, and the bottom of the convex part 122 forms an outlet 124 of the flow channel 123, that is, the metal solution can drop at the outlet 124 and form metal powder. The fitting ring 121 cooperates with the convex part 122, which helps to guide the cooling liquid to flow more smoothly through the flow channel 123, and at the same time, the outer taper surface of the convex part 122 can further prevent the metal melt from wetting the flow component 12 under the action of surface tension.

[0043] According to an embodiment of the present application, the first limiting part 1311 is configured as a first thread formed on the inner periphery wall of the main body part 131, and the second limiting part 1211 is configured as a second thread formed on the outer periphery of the fitting ring 121. By designing the first limiting part 1311 and the second limiting part 1211 as threads, a more tight and firm connection can be achieved, which can effectively prevent the flow component 12 from shaking or deviating in the main body part 131, thereby improving the stability and reliability of the entire metal powder preparation device 1. At the same time, the threaded connection has the characteristics of easy adjustment and disassembly. When the flow component 12 needs to be replaced or repaired, it can be easily disassembled and installed by rotating the fitting ring 121, which simplifies the maintenance process and improves the work efficiency.

[0044] According to one embodiment of the utility model, the main body 131 is suitable for being connected with the power supply, the metal powder preparation device 1 further includes: an induction coil 14, one end of the induction coil 14 is connected with the main body 131, and at least part of the induction coil 14 is arranged around the outer periphery of the crucible 11 and is connected with the power supply. By connecting one end of the induction coil 14 with the main body 131 and arranging at least part of the induction coil 14 around the outer periphery of the crucible 11 and connecting it with the power supply, the function of electromagnetic induction heating is realized. Compared with traditional flame heating, the electromagnetic heating mode by arranging the induction coil 14 has the advantages of fast heating speed, high efficiency, accurate temperature control and the like, and the electromagnetic induction heating mode does not need direct contact of open fire or high-temperature elements with the metal liquid, thereby reducing the safety risks such as fire and explosion. In addition, since there is a certain distance between the induction coil 14 and the metal liquid, the risk of damage of the metal powder preparation device 1 caused by thermal expansion or thermal stress and the like is also reduced.

[0045] At least part of the induction coil 14 is arranged around the outer periphery of the crucible 11, which can ensure that the metal raw material is uniformly heated in the crucible 11, facilitate the preparation of the metal solution, and also facilitate the uniformity and consistency of the metal powder finally output by the metal powder preparation device 1.

[0046] According to one embodiment of the utility model, the induction coil 14 is configured as a hollow pipe body, and the inside of the induction coil 14 is in communication with the cooling liquid flow channel 133. The induction coil 14 is designed as a hollow pipe body and is in communication with the cooling liquid flow channel 133, so that the cooling liquid can enter the inside of the induction coil 14, the effective cooling of the induction coil 14 can be realized after the heating work of the induction coil 14 is completed, the induction coil 14 can be prevented from being in a high-temperature state for a long time, the material aging and performance decline caused by high temperature can be reduced, and thus the service life of the induction coil 14 is prolonged.

[0047] According to one embodiment of the utility model, the metal powder preparation device 1 further includes: a power supply device 15, the power supply device 15 is provided with a first interface 151 and a second interface 152 which are suitable for leading out the cooling liquid and electrically connected, one of the first interface 151 and the second interface 152 is connected with the communication pipe 132, and the other of the first interface 151 and the second interface 152 is suitable for being connected with the other end of the induction coil 14.

[0048] The setting of the power supply device 15 can control the on-off of the electric connection of the induction coil 14, at the same time, the power supply device 15 is provided with the first interface 151 suitable for leading out the cooling liquid and the second interface 152 suitable for recycling the cooling liquid, the circulation use of the cooling liquid can be realized: after the cooling liquid flows through the inside of the induction coil 14 for cooling, the cooling liquid can return to the power supply device 15 and flow back to the cooling liquid flow channel 133 through the communication pipe 132 for recooling and circulation use, the utilization rate of the cooling liquid is improved, and the operating cost is reduced.

[0049] According to one embodiment of the present application, the crucible 11 is formed with a clearance hole for avoiding the communication pipe 132 and the induction coil 14, and the clearance hole is arranged to facilitate the assembly of the communication pipe 132 and the induction coil 14.

[0050] According to one embodiment of the present application, the metal powder preparation device 1 further comprises an actuating rod 16, which is movably arranged relative to the crucible 11 and has a moving direction opposite to the matching hole 112 and selectively extending into the crucible 11. When preparing the metal powder, the actuating rod 16 can act up and down inside the crucible 11 to apply pressure to the metal solution and push the metal solution through the flow component 12. Under the pressure of the actuating rod 16, the metal solution passes through the outlet 124 at the bottom of the flow component 12 and finally forms tiny droplets, which are cooled into powder. The arrangement of the actuating rod 16 improves the efficiency of preparing the metal powder.

[0051] In some embodiments, the water cooling component 13 can also not be connected with the induction coil 14, that is, the cooling liquid can not flow into the induction coil 14, but is connected with a water cooling system alone, and the continuous and good preparation of the metal monodisperse particles with high melting point, high reactivity and high wettability can also be achieved.

[0052] In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0053] In the description of the present application, "a first feature" and "a second feature" can include one or more features.

[0054] In the description of the present application, "a plurality of" means two or more.

[0055] In the description of the present application, "above" or "below" of a first feature to a second feature can include that the first and second features are in direct contact, or can include that the first and second features are not in direct contact but are in contact through another feature therebetween.

[0056] In the description of the utility model, first feature is in second feature "on", "above" and "on" include first feature is in second feature directly above and oblique, or just indicate first feature horizontal height is higher than second feature.

[0057] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the utility model. In the specification, the illustrative description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0058] Although the embodiments of the utility model have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the utility model, and the scope of the utility model is defined by the claims and its equivalents.

Claims

1. A metal powder production apparatus, characterized by, Comprise: a crucible (11) in which a smelting cavity (111) is formed and a matching hole (112) communicating with the smelting cavity (111) is arranged at the bottom of the crucible (11); a flow component (12) arranged at the bottom of the crucible (11), at least part of the flow component (12) is accommodated in the matching hole (112), the flow component (12) forms a flow passage (123) communicating with the smelting cavity, the cross section of the flow passage (123) gradually decreases in the direction away from the smelting cavity; a water cooling component (13) arranged in the matching hole (112) and sleeved on the outer periphery of the flow component (12), the water cooling component (13) forms a cooling liquid flow channel (133) therein.

2. The metal powder production apparatus according to claim 1, characterized in that The water cooling component (13) comprises: a main body part (131) configured in a ring shape to be sleeved on the outer periphery of the flow component (12), the inner surface of the inner wall of the main body part (131) is limitedly matched with the flow component (12), and the cooling liquid flow channel (133) is formed in the main body part (131) and arranged around; a communication pipe (132) connected with the outer peripheral wall of the main body part (131), the communication pipe (132) forms a connecting passage communicating with the cooling liquid flow channel (133) inside, and the connecting passage is adapted to be connected with a water source.

3. The metal powder production apparatus according to claim 2, characterized in that The inner surface of the inner wall of the main body part (131) forms a first limiting part (1311), the outer peripheral wall of the flow component (12) forms a second limiting part (1211), and the second limiting part (1211) is limitedly matched with the first limiting part (1311) to adapt that the flow component (12) is detachably arranged in the main body part (131).

4. The metal powder production apparatus according to claim 3, characterized in that The flow component (12) comprises: a matching ring (121) accommodated in the main body part (131), and the outer periphery of the matching ring (121) forms the second limiting part (1211), and part of the flow passage (123) is formed on the matching ring (121); a convex part (122) arranged on the side of the matching ring (121) away from the crucible (11), the convex part (122) is configured in a taper shape protruding from the bottom surface of the matching ring (121), another part of the flow passage (123) is formed in the convex part (122), and the end of the convex part (122) forms an outlet (124) of the flow passage (123).

5. The metal powder production apparatus according to claim 4, characterized in that The first limiting part (1311) is configured as a first thread formed on the inner wall of the main body part (131), and the second limiting part (1211) is configured as a second thread formed on the outer periphery of the matching ring (121).

6. The metal powder production apparatus according to claim 3, characterized in that The main body part (131) is adapted to be connected with a power source; The metal powder preparation device further comprises: An induction coil (14) is connected to the main body (131) at one end, and at least a part of the induction coil (14) is wound around the outer periphery of the crucible (11) and connected to the power source.

7. The metal powder production apparatus according to claim 6, characterized in that The induction coil (14) is configured as a hollow tube, and the inside of the induction coil (14) is in communication with the cooling liquid flow channel (133).

8. The metal powder production apparatus according to claim 7, characterized in that Further comprising: A power supply device (15) is provided with a first interface (151) and a second interface (152) adapted to export and recycle cooling liquid and electric connection, one of the first interface (151) and the second interface (152) is connected to the communication pipe (132), and the other of the first interface (151) and the second interface (152) is adapted to be connected to the other end of the induction coil (14).

9. The metal powder production apparatus according to claim 6, characterized in that The crucible (11) is formed with a avoiding hole for avoiding the communication pipe (132) and the induction coil (14).

10. The metal powder production apparatus according to claim 1, characterized in that Further comprising: An actuating rod (16) is movably arranged relative to the crucible (11), and the moving direction of the actuating rod (16) is opposite to the matching hole (112) and can be selectively extended into the crucible (11).

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