Metal powder forming system and assembling and debugging method thereof

Abstract

The invention discloses a metal powder forming system and an assembling and debugging method thereof. The metal powder forming system comprises an atomizing chamber; the centrifugal forming device comprises a centrifugal rotating unit and a mounting unit, the centrifugal rotating unit comprises a main shaft and a centrifugal rotating assembly arranged on the main shaft, the centrifugal rotating assembly comprises a rotating disc, and the main shaft is used for driving the rotating disc to rotate, so that molten metal dripping on the rotating disc is thrown out under the action of centrifugal force; the mounting unit comprises a base, an adjusting assembly and a mounting assembly, and the adjusting assembly is used for fixedly connecting the mounting assembly to the base and adjusting the levelness of a rotating disc arranged on the main shaft and the position of the central axis of the rotating disc; a smelting system. The problems of high assembly precision and difficult assembly caused by high assembly precision of the centrifugal forming system are well solved, and the method plays an important role in realizing industrial and continuous processing of copper powder.

Description

Technical Field

[0001] The present invention belongs to the technical field of metal powder processing, and specifically relates to a metal powder forming system and an assembly and debugging method thereof, which are used for processing and forming metal powders such as copper powder required for additive manufacturing. Background Art

[0002] With the development of laser printing technology and electron beam 3D printing technology, the 3D printing of copper and its alloys is becoming more and more widely used in industry. Foreign companies such as NASA have entered the experimental stage of 3D printing of copper alloy thrust chamber components. Domestic companies have also carried out research on 3D printing technology of copper alloy tail nozzles. At the same time, the application of copper and its alloys in electric vehicle parts has promoted the rapid development of 3D printing technology of copper and its alloys.

[0003] Copper and copper alloy powders, as important raw materials for 3D printing, are showing a rapid growth trend. However, the traditional aerosol preparation process is difficult to prepare copper and copper alloy powders that meet SLM application indicators, and the product stability is poor, making the preparation of copper and copper alloy powders an important link restricting the industrial application of copper and copper alloy 3D printing technology. Summary of the invention

[0004] The purpose of the present invention is to provide a metal powder forming system and an assembly and debugging method thereof to solve the problem that the existing gas atomization metal powder preparation device cannot meet the industrial production and application needs of copper powder, and is particularly suitable for the industrial preparation and forming of metal powder for additive manufacturing.

[0005] The present invention is achieved through the following technical solutions: Metal powder forming system, including: An atomization chamber, wherein a closed chamber is formed in the atomization chamber; A centrifugal forming device, the centrifugal forming device comprises a centrifugal rotating unit and a mounting unit, the centrifugal rotating unit comprises a main shaft and a centrifugal rotating assembly arranged on the main shaft, the centrifugal rotating assembly comprises a rotating disk, the main shaft is used to drive the rotating disk to rotate, so that the molten metal dripping on the rotating disk is thrown outward under the action of centrifugal force; the mounting unit comprises a base, an adjustment assembly and a mounting assembly, the mounting assembly is used to install the main shaft of the centrifugal rotating unit, the adjustment assembly is arranged between the base and the mounting assembly, and is used to fix the mounting assembly on the base and adjust the horizontality of the rotating disk arranged on the main shaft and the position of the central axis of the rotating disk; the base is connected to the atomization chamber, so that the centrifugal forming device is suspended in the atomization chamber; The smelting system comprises a closed smelting chamber and a smelting device arranged in the smelting chamber, wherein the smelting device is used to melt the metal, and the smelting chamber is arranged on the top of the atomizing chamber so that the molten liquid discharge port of the smelting device is located in the atomizing chamber and above the rotating disk.

[0006] In some embodiments, the adjustment component includes: Base; A slide plate adjustment assembly is arranged on the base, and the slide plate adjustment assembly includes a lower slide plate arranged on the base and an upper slide plate arranged on the lower slide plate; The lower slide plate is slidably connected to the base, so that the lower slide plate can slide on the base along the X-axis direction, and an X-direction positioning adjustment mechanism is provided between the lower slide plate and the base, for adjusting the position of the lower slide plate on the base along the X-direction and fixing the lower slide plate on the base; The upper slide plate is slidably connected with the lower slide plate so that the upper slide plate can slide on the lower slide plate along the Y-axis direction. A Y-direction positioning adjustment mechanism is provided between the upper slide plate and the lower slide plate for adjusting the position of the upper slide plate on the lower slide plate along the Y-direction and fixing the upper slide plate on the lower slide plate; And a level adjustment component arranged between the base and the pedestal, the level adjustment component includes at least three groups of adjustment screw assemblies, and the adjustment screw assembly includes an adjustment screw and an adjustment nut which fixes the adjustment screw to the base and the pedestal at both ends respectively.

[0007] In some embodiments, the mounting assembly includes: A hollow support cylinder, wherein the support cylinder is arranged on the adjustment assembly; The mounting seat is arranged on the supporting tube, the mounting seat includes a water cooling jacket arranged in an annular shape, the supporting tube is provided with a water cooling channel, the water cooling channel is connected with the water cooling jacket at the bottom of the water cooling jacket, so that the cooling medium can circulate in the water cooling jacket through the water cooling channel.

[0008] In some embodiments, the water-cooling channel is an annular water-cooling cavity formed along the circumferential direction of the support tube, and a plurality of connecting channels are arranged between the water-cooling cavity and the water-cooling jacket, so that the cooling medium can circulate between the water-cooling cavity and the water-cooling jacket, and a water inlet and a water outlet are arranged on the water-cooling cavity, and both the water inlet and the water outlet are arranged toward the inside of the support tube.

[0009] In some embodiments, the base is connected to the atomization chamber via a mounting tube that is horizontally arranged to penetrate the atomization chamber, and the mounting tube is fixedly connected to the atomization chamber at both ends; The base, the seat and the adjusting assembly are provided with pipeline channels for water inlet and water outlet pipelines extending from the mounting pipe into the supporting cylinder, the water inlet pipeline is connected to the water inlet, and the water outlet pipeline is connected to the water outlet.

[0010] In some embodiments, the centrifugal rotating assembly includes a rotating support, the rotating support includes a mounting portion and a rotating handle, the rotating handle is connected to the main shaft, and the mounting portion is provided with a mounting groove; The bottom of the rotating disk is provided with a mounting boss matched with the mounting groove, and the mounting boss is matched and arranged in the mounting groove; A mounting hole is provided on the rotating handle along its axial direction, a threaded hole connected to the mounting hole is provided on the mounting boss, a connecting screw is provided in the mounting hole, the connecting screw is connected to the rotating disk through the threaded hole, and the connecting screw applies a force along the central axis direction of the rotating disk to the rotating disk, thereby fixing the rotating disk on the rotating support.

[0011] In some embodiments, the smelting device comprises: A crucible, wherein a flow guide tube is arranged at the bottom of the crucible, wherein a flow guide channel communicating with the interior of the crucible is arranged in the flow guide tube, wherein a nozzle is arranged at the outlet of the flow guide channel, wherein a flow channel is arranged in the nozzle, wherein the flow channel comprises a transition section and a flow guide section arranged in sequence, wherein the transition section is a conical structure whose diameter gradually decreases from the inlet to the outlet, and the flow guide section is a through hole having the same diameter as the outlet of the transition section; A heating unit, the heating unit comprising a first induction coil for heating the crucible and a second induction coil for heating the flow guide tube; A switch control unit, the switch control unit includes a stopper rod passing through the crucible and inserted into the guide channel, a switch valve assembly is arranged at the end of the stopper rod, the switch valve assembly includes a stopper valve matched with the transition section and a needle valve matched with the drainage section, and when the switch valve assembly is in a closed state, the needle valve is inserted through the drainage section.

[0012] In some embodiments, the nozzle end is located at the flow channel outlet, and a boss is protruding outward. The diversion section passes through the boss along the axis of the boss, and the circumferential dimension of the boss at one end of the diversion section outlet is set to be equivalent to the diameter of the diversion section.

[0013] In some embodiments, the smelting chamber includes a first smelting chamber and a second smelting chamber; The crucible is arranged in the first smelting chamber, the guide tube is extended into the second smelting chamber, a sealing member is arranged between the first smelting chamber and the crucible and the guide tube, and the first smelting chamber and the second smelting chamber are separated into two independent chambers, and the flow channel outlet of the nozzle in the smelting device is arranged in the atomizing chamber and close to the rotating disk.

[0014] On the other hand, the present invention also provides a method for assembling and debugging a metal powder forming system, comprising the following steps: Extend the water inlet pipe and the water outlet pipe into the support cylinder of the installation unit through the support installation pipe, and connect them to the water cooling cavity respectively; The centrifugal forming device is fixedly assembled on the base, and the horizontality of the rotating disk, the distance between the rotating disk and the melt outlet of the smelting system, and the centering position are adjusted by adjusting the components, so that the rotating disk is horizontally arranged and the center of the rotating disk and the center of the outlet of the smelting device are located on the same vertical line.

[0015] Compared with the prior art, the present invention has the following advantages and beneficial effects: The present invention reasonably configures the installation structure and installation method of the centrifugal molding system and the smelting system on the atomizing chamber, and cooperates with the structural characteristics of the centrifugal molding device. After the centrifugal molding device is stably installed on the atomizing chamber, the horizontality of the rotating disk and the centering position of the rotating disk can be adjusted by adjusting the component, thereby ensuring the centering accuracy of the rotating disk and the molten liquid discharge port of the smelting system, which well solves the problems of high assembly accuracy and assembly difficulty caused by high assembly accuracy of the centrifugal molding system, and reduces the requirements for assembly accuracy and assembly process of the two when assembling the centrifugal molding system into the atomizing chamber.

[0016] By realizing the centering adjustment of the rotating disk and the molten liquid discharge port of the smelting system, the copper liquid droplets dripping from the molten liquid discharge port of the smelting system can be exactly dripped on the center of the rotating disk, so as to avoid the eccentric force in other directions on the rotating disk when the copper liquid drops on the high-speed rotating disk, thereby affecting the rotation stability of the rotating disk, ensuring the consistency of the force applied to the copper liquid when it is thrown out, improving the uniformity of the particle size of the prepared copper powder, ensuring that the copper powder has good sphericity, and at the same time avoiding the damage to the rotating disk caused by the unstable rotation of the rotating disk, thereby improving the service life of the rotating disk, and playing an important role in realizing the industrialized and continuous processing of copper powder.

[0017] The base of the centrifugal forming device is connected by a mounting pipe that runs through the atomizing chamber. The hollow structure of the mounting pipe is used to support the installation pipe. Under the condition of ensuring the sealing performance of the atomizing chamber, a channel for installing the water inlet and outlet pipes of the centrifugal forming device is provided, so that the water cooling jacket located in the atomizing chamber can be connected to the external circulating water system through the water inlet and outlet pipes, so as to form circulating cooling for the main shaft in the atomizing chamber. In addition, through the cooperation of the support unit and the supporting cylinder structure on the mounting assembly, the pipeline and the cable for powering the main shaft rotation drive can be hidden in the mounting pipe and the supporting cylinder, so as to avoid the pipeline and the cable being directly exposed to the high temperature environment of the atomizing chamber, effectively protect the pipeline and the cable, and will not affect the forming and discharging of the metal powder in the atomizing chamber, which well solves the actual problems existing in the industrial production of metal powder.

[0018] The rotating disk made of silicon carbide in the centrifugal forming device is connected to the main shaft through a rotating support, which solves the problem that the connection strength cannot be guaranteed when the silicon carbide rotating disk is directly connected to the main shaft, and the rotating disk is easily damaged, which is difficult to meet the requirements of industrial production; an embedded connection method is adopted between the rotating disk and the rotating support, and the rotating support forms a covering on the rotating disk in the circumferential direction. Combined with the movement characteristics of the rotating disk, the rotating disk and the rotating support are firmly connected, and will not fall off from the rotating support during high-speed rotation. The force applied by the rotating support to the rotating disk is small, and the applied force is distributed along the radial direction of the rotating disk, which further reduces the force that may be generated on the rotating disk, avoids possible damage to the rotating disk, and increases the service life of the rotating disk; at the same time, a tightening force is applied to the rotating disk by setting a connecting screw along the central axis direction of the rotating disk, which further ensures that the rotating disk rotating at high speed will not fall off the rotating support, and because the force applied to the rotating disk in its axial direction is small, this connection method can avoid damage to the connecting screw and the rotating disk at the connection position.

[0019] The smelting device adopts a flow guide tube arranged at the bottom of the crucible, and an induction coil for heating the flow guide tube is arranged. At the same time, the structure of the nozzle is arranged, and the flow channel of the nozzle is arranged to be a transition section and a drainage section with a gradual structure, so that when the copper liquid in the crucible passes through the drainage channel, the transition section, the drainage section in sequence and flows out from the outlet of the drainage section, the stability and consistency of the dripping of the copper liquid droplets, the uniformity of the droplet size, the constancy of the droplet temperature and the consistency of the temperature can be well guaranteed, thereby ensuring the quality of the metal powder prepared by centrifugal atomization.

[0020] Combined with the structure adopted by the switch valve assembly, when the switch valve assembly is opened, the plug valve with a conical surface seal can be opened first. At this time, the flow channel of the nozzle is shut off by the needle valve, so that the copper liquid can gradually fill the transition section and slowly fill the space inside the transition section until the needle valve is completely drawn out of the drainage section. The switch valve assembly is fully opened, allowing droplets to drip from the drainage section outlet onto the rotating disk; in this process, the flow of the copper liquid is more stable, which can well avoid the traditional switch method when it is turned on instantly, and the molten liquid forms an impact at the flow channel outlet, causing the molten liquid flow at the flow channel outlet to be turbulent, resulting in uneven droplet size, unstable dripping and other problems, thereby ensuring the molding quality of the metal powder, reducing the erosion of the flow channel by the copper liquid, and ensuring the service life of the device.

[0021] A boss is provided at the end of the nozzle, and the size of the boss end is set to be equivalent to the diameter of the drainage section, that is, close to or equal to the diameter of the drainage section, so that when the liquid flows out of the drainage section, the liquid flow can always drip vertically onto the rotating disk in a direction consistent with the drainage section, thereby ensuring the consistency of the dripping position when the liquid droplets drip onto the rotating disk, thereby ensuring the molding quality of the copper powder. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 Schematic diagram of the structure of a metal powder forming system in an embodiment of the present invention.

[0024] Figure 2 It is a top view of the structure of the metal powder forming system in an embodiment of the present invention.

[0025] Figure 3 Schematic diagram of the structure of the centrifugal forming device in an embodiment of the present invention.

[0026] Figure 4 It is a schematic diagram of the three-dimensional structure of a centrifugal rotating unit in a centrifugal forming device in an embodiment of the present invention being arranged on a mounting unit.

[0027] Figure 5 for Figure 4 Structural cross-sectional view of the centrifugal forming device.

[0028] Figure 6 Schematic diagram of the structure of the centrifugal rotating assembly in an embodiment of the present invention.

[0029] Figure 7 Schematic diagram of the structure of the smelting system in an embodiment of the present invention.

[0030] Figure 8 It is a schematic diagram of the structure of a smelting device in an embodiment of the present invention.

[0031] Fig. 9 for Figure 8 Partial schematic diagram at point A in the middle.

[0032] Fig.10 It is a schematic diagram of the nozzle structure in the smelting device in an embodiment of the present invention.

[0033] Fig.11 Schematic diagram of CFD simulation analysis of copper solution flowing out of the nozzle in an embodiment of the present invention.

[0034] in: 10. Mounting unit, 11. Base, 12. Adjustment assembly, 121. Lower slide plate, 122. Upper slide plate, 123. X-axis strip hole, 124. Y-axis strip hole, 125. X-axis locking screw, 126. Y-axis locking screw, 127. Fixing piece, 128. Adjustment screw, 129. Adjustment screw, 1210. Adjustment nut, 13. Mounting seat, 131. Water cooling jacket, 132. Mounting plate, 133. Connecting plate, 14. Support cylinder, 141. Water cooling chamber, 142. Water inlet, 143. Water outlet, 15. Communication channel, 16. Pipe channel, 17. Mounting hole, 18. Base, 19. Mounting pipe; 20. Centrifugal rotating unit, 21. Main shaft, 211. Clamp, 22. Rotating support, 221. Rotating handle, 222. Mounting part, 23. Rotating disk, 231. Mounting boss, 24. Connecting screw; 30. Atomizing chamber, 31. Water cooling jacket, 32. Discharge valve, 33. Vacuum main pipe, 34. Vacuum branch pipe; 40. Smelting device, 401. Crucible, 402. Guide tube, 403. Guide channel, 404. Nozzle, 441. Transition section, 442. Guide section, 443. Boss, 405. First induction coil, 406. Second induction coil, 407. Stopper rod, 408. Plug valve, 409. Needle valve, 410. Matching cone surface; 41. Smelting chamber, 411. First smelting chamber, 412. Second smelting chamber, 413. Sealing member. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments.

[0036] When copper powder is processed and formed by centrifugal atomization, the copper liquid dripping on the rotating disk is decomposed into smaller droplets under the centrifugal force generated by the high-speed rotating disk and thrown into the atomization chamber. The high-speed droplets are solidified into spherical metal powders with tiny particle sizes under the action of their surface tension during the flight in the atomization chamber. Usually, the particle size of metal powders required by different 3D printing processes is also different, including 0-25μm, 15-53μm, and 20-45μm.

[0037] In this molding method, the position of the rotating disk has an important influence on the molding quality of the copper powder. When the rotation center of the rotating disk and the position where the copper liquid drops are not on the same axis, the copper liquid drops will drop at a position deviated from the rotation center of the rotating disk. At this time, the copper liquid dripping on the rotating disk will produce a large eccentric force on the rotating disk. This force will have a very large impact on the stability of the rotating disk, especially when the rotating disk rotates at high speed (the rotating disk speed can reach 100,000 rpm), and the stability of the rotating disk at high speed will have a direct impact on the molding quality of the copper powder. The position where the copper liquid drops deviate from the rotation center of the rotating disk will not only cause uneven force on the rotating disk, but also cause uneven heating at various positions of the rotating disk. Under long-term working conditions, it will cause the rotating disk to burst, affecting the service life of the rotating disk.

[0038] Similarly, the higher the levelness of the rotating disk, the easier it is to ensure the particle size and uniformity of the metal powder obtained by centrifugal forming; therefore, the levelness of the rotating disk and the centering accuracy of the rotating disk have an important influence on the forming quality of the metal powder forming system.

[0039] The requirement for the position accuracy of the rotating disk has caused great difficulties in the setting and assembly of the rotating disk in the atomization chamber. When the centrifugal forming device is installed in the atomization chamber, it is often difficult to ensure the centering accuracy between the rotating disk and the smelting device and the horizontality of the rotating disk.

[0040] Reference Figure 1 In some embodiments of the present invention, the metal powder forming system includes: Atomizing chamber, a closed chamber is formed in the atomizing chamber, and a discharge port is arranged at the bottom of the atomizing chamber. The atomizing chamber as a whole is a gyro-like structure with a large upper end and a small lower end. There is a large space from the center to the side wall at its upper end, which can provide sufficient flight space for the tiny metal droplets atomized by centrifugation, so that they can be fully cooled during the flight, thereby using their surface tension to form spherical particles with good sphericity; its lower end is set to a cone, which can make the formed metal powder gather at the bottom of the atomizing chamber and be conveniently discharged from the discharge port. A discharge valve is set on the discharge port of the atomizing chamber to facilitate the control of the discharge operation.

[0041] During the production process, the atomizing chamber is first vacuumed and then replaced with inert gas to create a slightly positive pressure in the atomizing chamber, which can prevent the prepared metal powder (such as copper powder) from oxidation and ensure that the metal droplets can be fully cooled during the molding process.

[0042] A centrifugal forming device is arranged in the atomizing chamber and is used for centrifugal atomization of the molten metal; Figure 3 , Figure 4 and Figure 5,include: The centrifugal rotating unit 20 includes a main shaft 21 and a centrifugal rotating assembly disposed on the main shaft, wherein the centrifugal rotating assembly includes a rotating disk 23, and the main shaft 21 is used to drive the rotating disk 23 to rotate, so that the molten metal dripping on the rotating disk is thrown outward under the action of centrifugal force; The mounting unit 10 includes a base 18, an adjustment component 12 and a mounting component. The mounting component is used to install the main shaft of the centrifugal rotating unit. The adjustment component is arranged between the base and the mounting component, and is used to fix the mounting component to the base and adjust the horizontality of the rotating disk set on the main shaft and the position of the central axis of the rotating disk.

[0043] The smelting system includes a closed smelting chamber and a smelting device arranged in the smelting chamber. The smelting device is used to melt the metal. The smelting chamber is arranged on the top of the atomizing chamber so that the molten liquid discharge port of the smelting device is located in the atomizing chamber and above the rotating disk. The smelting device is arranged in the closed smelting chamber. The smelting chamber can provide the required vacuum environment for smelting, avoid oxidation of the molten metal during the smelting process, and thus ensure the purity of the prepared copper powder.

[0044] In the centrifugal forming device of this embodiment, an adjustment component is provided on the mounting unit. After the centrifugal forming device is assembled to the atomizing chamber, the horizontality of the rotating disk is adjusted by the adjustment component to meet the preparation requirements. When the central axis of the rotating disk and the position where the copper liquid of the smelting device drops are not located on the same straight line, the position of the main shaft and the rotating disk installed on the mounting seat can be adjusted by the adjustment component, so that the copper liquid droplets dripping from the smelting device can just drip on the center of the rotating disk, and avoid the copper liquid dripping on the high-speed rotating disk, which generates eccentric forces in other directions on the rotating disk and affects the stability of the rotation of the rotating disk; at this time, the stability of the rotation of the rotating disk and the consistency of the landing point of the copper liquid on the rotating disk can well ensure the consistency of the force of the copper liquid when it is thrown out, thereby improving the uniformity of the particle size of the prepared copper powder and the sphericity of the copper powder; at the same time, the damage to the rotating disk caused by the unstable rotation of the rotating disk can be avoided, the service life of the rotating disk is improved, and the industrialization and continuous processing of the copper powder are realized. Play an important role.

[0045] The centrifugal forming device of the above-mentioned embodiment, during assembly, can adjust the horizontality and centering position of the rotating disk by adjusting the assembly after the centrifugal forming device is assembled into the atomization chamber, thereby reducing the requirements for assembly accuracy between the centrifugal forming device and the atomization chamber; by optimizing the assembly process, when the centrifugal forming device is assembled into the atomization chamber, there is no need to perform centering operation at the connection position between the atomization chamber and the centrifugal forming device, and the assembly and adjustment of the centrifugal forming device in the atomization chamber is more convenient.

[0046] In some embodiments, the adjustment component 12 includes: Base 11; A lower slide plate 121 disposed on the base 11 and an upper slide plate 122 disposed on the lower slide plate; The lower slide plate 121 is slidably connected to the base 11, so that the lower slide plate can slide on the base along the X-axis direction. An X-direction positioning adjustment mechanism is provided between the lower slide plate 121 and the base 11, which is used to adjust the position of the lower slide plate on the base along the X-direction and fix the lower slide plate on the base; The upper slide plate 122 is slidably connected with the lower slide plate 121, so that the upper slide plate can slide on the lower slide plate along the Y-axis direction. A Y-direction positioning adjustment mechanism is provided between the upper slide plate and the lower slide plate, which is used to adjust the position of the upper slide plate on the lower slide plate along the Y-direction and fix the upper slide plate on the lower slide plate; And a level adjustment assembly is arranged between the base 11 and the pedestal 18, the level adjustment assembly includes at least three sets of adjustment screw assemblies, the adjustment screw assembly includes an adjustment screw 129 and an adjustment nut 1210 that fixes the adjustment screw to the base 11 and the pedestal 18 at both ends respectively.

[0047] The adjustment component adopts a structure in which an upper slide plate, a lower slide plate, an X-direction positioning adjustment mechanism and a Y-direction positioning adjustment mechanism cooperate with each other. The structure is simple and can ensure the stability of the installation component setting on the device and the stability of the main shaft operation.

[0048] When the horizontality is adjusted by the horizontality adjustment assembly, the adjustment nuts on the adjustment screws are adjusted to adjust the horizontality of the base and the rotating disk arranged on the base. At the same time, the height position of the rotating disk in the atomization chamber can also be adjusted by multiple adjustment screw assemblies.

[0049] In some embodiments, the lower plate 121 is provided with X-direction strip holes 123 along the X-axis direction on both sides thereof, and an X-direction locking screw 125 is provided in the X-direction strip hole 123, and the X-direction locking screw 125 is threadedly connected to the base 11; The upper slide plate 122 is provided with Y-direction strip holes 124 along the Y-axis direction on both sides thereof, and a Y-direction locking screw 126 is provided in the Y-direction strip hole 124 . The Y-direction locking screw 126 is threadedly connected to the lower slide plate 121 .

[0050] This sliding fit structure has a simple structure and can easily ensure the adjustment and fit accuracy between the lower slide plate and the base, and between the upper slide plate and the lower slide plate. At the same time, after adjustment is in place, the lower slide plate and the upper slide plate can be fixed by X-axis locking screws and Y-axis locking screws to achieve stable installation of the installation components in the device.

[0051] Reference Figure 4 and Figure 5The X-direction positioning adjustment mechanism can adopt fixing members 127 arranged oppositely on both sides of the base and adjusting screws 128 arranged on the fixing members, and the adjusting screws are threadedly connected to the fixing members. By adjusting the two adjusting screws arranged oppositely, the position of the lower slide plate along the X-axis direction can be adjusted, and the lower slide plate can be fixed on the base at the same time. The Y-direction positioning adjustment mechanism can adopt the same structure as the X-direction positioning adjustment mechanism to adjust the position of the upper slide plate on the lower slide plate along the Y-axis direction, and its structure is not described in detail here.

[0052] In some embodiments, reference Figure 6 The centrifugal rotating assembly includes a rotating support 22, the rotating support 22 includes a mounting portion 222 and a rotating handle 221, the rotating handle 221 is connected to the main shaft 21, and a mounting groove is provided on the mounting portion 222; The bottom of the rotating disk 23 is provided with a mounting boss 231 that matches the mounting groove, and the mounting boss 231 is matched and arranged in the mounting groove; A mounting hole is provided on the rotating handle 221 along its axial direction, and a threaded hole connected to the mounting hole is provided on the mounting boss 231. A connecting screw 24 is provided in the mounting hole. The connecting screw 24 is connected to the rotating disk through the threaded hole. The connecting screw 24 applies a force along the central axis direction of the rotating disk to the rotating disk, thereby fixing the rotating disk on the rotating support.

[0053] In combination with the performance requirements of the centrifugal rotating assembly, the rotating handle of the centrifugal rotating assembly and the main shaft needs to meet the requirements of small size and high strength, while the rotating disk is usually made of high-temperature resistant non-metallic materials such as SiC. Under high-speed rotation, the rotating handle is prone to breakage, thereby affecting the continuous and industrial processing of copper powder particles. In this embodiment, the centrifugal rotating assembly is designed as a split structure, and a rotating support is provided as a transition connection between the rotating disk and the main shaft to ensure the structural strength of the rotating handle. At the same time, in combination with the force and movement characteristics of the rotating disk, the rotating disk is wrapped and fixed in the radial direction and the circumferential direction, and the rotating disk is tightened and fixed in the axial direction, so that the rotating disk can be stably connected to the rotating support, and at the same time, the force of the rotating support and the connecting screws on the rotating disk can be reduced to avoid damage to the rotating disk.

[0054] A through hole structure is provided on the rotating handle 221, and a threaded hole with a left-handed thread is provided on the mounting boss of the rotating disk. The connecting screw adopts a left-handed thread, and the rotating disk is stably connected to the rotating support through the connecting screw.

[0055] In some embodiments, the rotating disk 23 is made of SiC, which is resistant to high temperatures, can reduce corrosion caused by copper liquid, and will not pollute the copper liquid, thereby ensuring the service life of the rotating disk. A continuous mounting boss structure is provided on the rotating disk, and the mounting boss and the rotating disk are in a continuous stepped structure, which facilitates the connection and assembly of the rotating disk and the rotating support, and facilitates the overall processing and molding of the rotating disk.

[0056] The rotating support 22 is made of metal material, such as TC4, etc., which has good structural strength. When the size of the rotating handle is small, its structural strength can be well guaranteed and the performance requirements of high-speed rotation of the centrifugal rotating component can be well met.

[0057] The surface of the rotating disk 23 is flat. The molten metal droplets drip onto the center of the rotating disk and are thrown out by the high-speed rotating disk. The molten metal droplets are broken into tiny droplets by the rotating disk during the throwing process.

[0058] With this split structure, the centrifugal rotating component can have a relatively small volume while having a relatively high structural strength, so as to meet the requirement of high-speed rotation of the centrifugal rotating component.

[0059] The centrifugal rotating assembly adopting the above structure can operate stably and reliably under high-speed working conditions, and its service life can reach more than 200 hours under continuous production, which greatly improves the industrial processing level of the centrifugal forming system.

[0060] In some embodiments, the mounting assembly includes: A hollow support cylinder 14, one end of which is disposed on the adjustment assembly 12; and a mounting seat 13, the mounting seat 13 being arranged at the other end of the supporting cylinder 14; The mounting seat 13 includes a water cooling jacket 131 arranged in an annular shape. A water cooling channel is arranged on the support tube. The water cooling channel is connected with the water cooling jacket at the bottom of the water cooling jacket so that the cooling medium can circulate in the water cooling jacket through the water cooling channel.

[0061] The high temperature environment in the atomization chamber will affect the stable operation of the spindle in a long-term working state. In this embodiment, a water cooling jacket is provided on the mounting seat to cool the working environment of the spindle, so as to improve the working environment of the spindle and ensure the continuous and stable operation of the spindle for a long time.

[0062] At the same time, in the structural design of the installation unit, a hollow support cylinder 14 is set to provide installation space for the main shaft, etc., and at the same time provide space for pipeline installation to ensure the cooling cycle of the water cooling jacket, so as to form a circulating cooling environment in the water cooling jacket.

[0063] In some embodiments, the water cooling channel is an annular water cooling cavity 141 formed along the circumferential direction of the support tube, and a plurality of connecting channels 15 are provided between the water cooling cavity 141 and the water cooling jacket 131, so that the cooling medium can circulate between the water cooling cavity and the water cooling jacket, and a water inlet 142 and a water outlet 143 are provided on the water cooling cavity 141, and both the water inlet 142 and the water outlet 143 are arranged toward the inside of the support tube 14; The base 11 and the adjusting assembly 12 are provided with a pipeline channel 16 for the water inlet pipeline and the water outlet pipeline to extend into the supporting cylinder. The water inlet pipeline is connected to the water inlet 142, and the water outlet pipeline is connected to the water outlet 143.

[0064] A water cooling cavity 141 is directly formed on the support tube 14 , and the water cooling cavity is used as a water cooling channel between the cooling medium and the water cooling jacket, and a water cooling environment can be formed inside the support tube, thereby providing a better cooling environment for the main shaft.

[0065] Reference Figure 5 The water cooling chamber 141 is divided into a water inlet chamber and a water outlet chamber. The water inlet chamber and the water outlet chamber are connected to the water cooling jacket through different connecting channels 15. The water inlet pipe is connected to the water inlet chamber, and the water outlet pipe is connected to the water storage chamber. The cooling medium enters the water inlet chamber through the water inlet pipe, and enters the water cooling jacket through the water inlet chamber; the cooling medium in the water cooling jacket flows out through the water outlet chamber and the water outlet pipe in turn, so that the cooling medium circulates in the water cooling jacket and the water cooling chamber.

[0066] The design of arranging the water inlet and outlet pipes inside the support tube can reduce the impact of the high temperature environment in the atomization chamber on the pipes, ensure the cooling effect, and avoid affecting the recovery of copper powder when the pipes are directly exposed in the atomization chamber.

[0067] In some embodiments, the water cooling jacket 131 is an annular frustum structure, the mounting seat 13 includes a mounting plate 132 arranged on the top of the water cooling jacket and a connecting plate 133 arranged on the bottom of the water cooling jacket, and the main shaft 21 is fixedly arranged on the mounting plate and extends into the cavity formed by the water cooling jacket and the support tube.

[0068] The water-cooling jacket 131 provides a circulating cooling environment for the spindle and serves as a mounting platform for the spindle. The water-cooling jacket 131 is used to install the spindle so that the spindle is located in a closed cavity formed by the water-cooling jacket and the supporting tube, thereby achieving stable installation of the spindle and effectively isolating the spindle from the external high-temperature environment, thereby ensuring stable operation of the spindle under long-term working conditions and facilitating the installation of the water-cooling jacket.

[0069] In some embodiments, the base 18 is connected to the atomization chamber through a mounting tube 19 that is horizontally arranged to penetrate the atomization chamber. The mounting tube is fixedly connected to the atomization chamber at both ends. The base is provided with a pipeline channel through which the water inlet and outlet pipelines can pass and extend into the mounting tube.

[0070] Through the coordination of the mounting tube, the base and the supporting cylinder structure on the mounting assembly, the pipelines and the cables for powering the main shaft rotation drive can be hidden in the mounting tube and the supporting cylinder, avoiding direct exposure of the pipelines and cables to the high-temperature environment of the atomization chamber. The pipelines and cables are effectively protected and will not affect the forming and discharging of the metal powder in the atomization chamber, thus effectively solving the actual problems existing in the industrial production of metal powder.

[0071] In some embodiments, a mounting hole 17 is provided on the support cylinder 14 , and a clamp 211 is fixedly provided on the main shaft 21 . The clamp 211 is provided in the cavity of the water cooling jacket and is fixedly connected to the mounting seat through bolts.

[0072] In the installation of the main shaft, a clamp is arranged on the main shaft, and connected with the mounting plate of the mounting seat through the clamp, so that the main shaft is fixedly mounted on the mounting seat, and the clamp is arranged in the cavity of the water cooling jacket, so as to reduce the surface area of ​​the main shaft exposed in the atomizing chamber. At this time, in order to facilitate the fixed installation of the main shaft on the mounting seat, a mounting hole that can be connected to the inside of the supporting cylinder is arranged on the supporting cylinder, and a blind plate can be arranged on the mounting hole to close the orifice of the mounting hole, so as to isolate the inside of the supporting cylinder from the high temperature environment in the atomizing chamber.

[0073] In this forming method, the smelting device needs to melt the copper into liquid state, and then drip the molten copper flow onto the rotating disk in sequence. The temperature of the molten copper flow when it drips onto the rotating disk, the position of the molten copper flow on the rotating disk, the stability of the dripping, etc., have an important influence on the centrifugal separation forming quality of the rotating disk for the molten copper droplets, such as sphericity, particle size, etc., and even the service life of the rotating disk.

[0074] In some embodiments, reference Figure 7 , Figure 8 and Fig. 9 , a smelting device, comprising: Crucible 401, a flow guide tube 402 is arranged at the bottom of crucible 401, a flow guide channel 403 connected to the inside of the crucible is arranged in the flow guide tube 402, a nozzle 404 is arranged at the outlet of the flow guide channel, a flow channel is arranged in the nozzle 404, and the flow channel includes a transition section 441 and a flow guide section 442 arranged in sequence, the transition section 441 is a conical structure with a diameter gradually decreasing from the inlet to the outlet, and the flow guide section 442 is a through hole with the same diameter as the transition section outlet. The molten metal in the crucible flows out through the flow guide channel, the transition section and the flow guide section in sequence, which well ensures the stability of the copper liquid flow, the consistency of the flow direction and the specifications and dimensions of the liquid flow beam, and the uniformity of the liquid flow.

[0075] The heating unit includes a first induction coil 405 for heating the crucible and a second induction coil 406 for heating the flow guide tube. Figure 1As shown, the first induction coil 405 is completely wrapped around the outer circumference of the crucible to heat the metal in the crucible, which can well ensure the consistency of the heating temperature in the crucible; similarly, the second induction coil 406 is completely wrapped around the outer circumference of the guide tube to heat the guide channel inside the guide tube to ensure the consistency of the heating temperature at various locations inside the guide channel, thereby well ensuring the constant temperature of the molten metal droplets.

[0076] The switch control unit is used to control the flow and shutoff of the molten metal in the smelting device. The switch control unit includes a stopper rod 407 that passes through the crucible and is inserted into the diversion channel. The diameter of the stopper rod 407 is smaller than the diameter of the diversion channel. A switch valve assembly is provided at the end of the stopper rod 407. The switch valve assembly includes a plug valve 408 that matches the transition section and a needle valve 409 that matches the diversion section. When the switch valve assembly is in the closed state, the needle valve 409 is inserted through the diversion section 442.

[0077] The plug valve adopts a truncated cone structure with the same taper and matching size as the transition section. The nozzle can be shut off through the cooperation between the plug valve and the transition section. The needle valve adopts a cylindrical structure with the same diameter as the drainage section. When the needle valve is inserted into the drainage section, the nozzle can be shut off.

[0078] When the switch valve assembly is opened, as the stopper moves, the stopper valve is separated from the transition section and the stopper valve is opened. Since the needle valve is inserted through the drainage section, the movement distance of the stopper rod is not enough to completely pull the needle valve out of the drainage section, and part of the needle valve remains in the drainage section. The needle valve still shuts off the flow channel of the nozzle at this time. In this process, as the stopper valve moves, the copper liquid can be gradually filled into the transition section and fill the space inside the transition section until the needle valve is completely pulled out of the drainage section. The flow channel of the nozzle is opened, allowing the molten metal to drip from the flow channel outlet onto the rotating disk. The opening method based on this structure solves the problem that when the traditional method is opened instantly, the molten metal will form an impact at the flow channel outlet, causing the molten metal flow at the flow channel outlet to be turbulent, resulting in unstable liquid flow, thereby ensuring the molding quality of the metal powder. In the case of solving the impact of the molten metal at the flow channel outlet, the erosion of the flow channel caused by the copper liquid can be reduced, effectively ensuring the service life of the device.

[0079] When the switch valve assembly is turned off, based on the structural characteristics of the switch valve, the needle valve can shut off the flow channel at the moment of inserting the drainage section, which can quickly shut off the flow of the molten metal. Similarly, due to the small aperture of the drainage section, the disturbance to the flow of the molten metal during the shut-off process and at the moment of shut-off is small, which can also well ensure the molding quality of the metal powder in the process.

[0080] In some embodiments, reference Fig.10The inlet end face 444 of the transition section is set as a continuously transitioned arc surface to improve the stability of the high-temperature beam when the molten liquid flows out of the nozzle.

[0081] In some embodiments, the ratio of the diameter of the inlet end of the transition section to the diameter of the outlet end thereof is not less than 10, and the diameter of the drainage section is not greater than 3 mm; so that the fine liquid flow formed by the molten liquid in the crucible flowing out of the nozzle can always maintain a stable beam shape.

[0082] In some embodiments, Fig.10 The end of the nozzle 404 is located at the location of the flow channel outlet, and a boss 443 is protruding outward. The drainage section is arranged along the axis of the boss and penetrates the boss, and the circumferential dimension of the boss at the outlet of the drainage section is set to be equivalent to the diameter of the drainage section. Here, the circumferential dimension is equivalent to the diameter of the drainage section, which means that the circumferential dimension (such as the diameter of the outer contour) is close to the diameter of the drainage section, for example, the circumferential dimension is slightly larger than the diameter of the drainage section, such as 0.1mm-1mm larger than the diameter of the drainage section.

[0083] At this time, the outlet end of the flow channel of the nozzle 404 is set to be equivalent to the diameter of the drainage section. When the fluid flows out from the outlet of the flow channel, due to the small end surface area of ​​the flow channel outlet end, the molten metal flow can always be maintained in the direction consistent with the drainage section and drip vertically onto the rotating disk, thereby ensuring the consistency of the dripping position when the liquid flow falls on the rotating disk and ensuring the molding quality of the copper powder.

[0084] In some embodiments, the circumferential dimension of the boss 443 gradually decreases in the direction away from the nozzle, and the circumferential dimension of the boss at the outlet end of the drainage section is the same as the diameter of the drainage section. This can reduce the influence of the nozzle outlet end on the flow stability of the melt and facilitate the processing and forming of the boss on the nozzle.

[0085] In some embodiments, the boss 443 may have a truncated cone structure.

[0086] A CFD simulation test was performed on the liquid flow performance of the nozzle in the above embodiment to simulate the liquid flow performance when the copper melt flows out of the nozzle of the smelting device in the above embodiment and flows into an argon inert atmosphere.

[0087] The simulation results are shown in the figure below. Fig.11 As shown in the figure, it can be seen that when the nozzle with the above structural design is turned on, the liquid flow forms droplets at the nozzle outlet, and after flowing for 0.14s, the copper solution flows out stably in the form of a columnar beam. (The red in the figure represents the molten liquid, and the red in the blue rectangular box represents the liquid flow formed by the molten liquid flowing out of the nozzle.) In some embodiments, the nozzle 404 and the guide tube 402 adopt a split structure, and the nozzle 404 is arranged at the outlet end of the guide channel 403 and is connected to the guide tube 402 through a matching cone surface 410. This makes it convenient to replace the nozzle and to process and form a complex flow channel structure that meets the requirements on the nozzle. The taper of the matching cone surface between the nozzle and the guide tube is set to 1:5-15. While achieving the connection between the nozzle and the guide tube, a good seal can be formed between the nozzle and the guide tube to ensure the sealing performance of the two at the connection position. At the same time, this connection method does not require a complex connection structure to be set on the nozzle and the guide tube, thereby facilitating the processing of the guide tube and the nozzle.

[0088] The nozzle can be made of SiC material.

[0089] In some embodiments, the flow guide tube 402 and the crucible 401 are of an integrated structure. The crucible and the flow guide tube may be made of Al2O3. The integrated structural design can avoid the problem of molten metal leakage in the smelting device, and can well ensure the uniformity of heating of the molten metal.

[0090] In some embodiments, the stopper rod 407 is made of ceramic material and can be a segmented combined structure. The needle valve 409 and the plug valve 408 are split structures. Figure 2 The plug valve 408 is connected between one end and the plug rod 407, and the needle valve 409 is set to pass through the through hole on the plug valve 408, so that one end is set between the plug valve and the end of the plug rod, and the needle valve is fixedly connected to the plug rod through the cooperation between the needle valve and the plug valve. The needle valve and the plug valve adopt a split structure, which can facilitate the processing and molding of the needle valve and the plug valve, and can well ensure the processing accuracy of the needle valve and the plug valve, so as to well meet the needs of the industrial production of metal powder.

[0091] Of course, in some embodiments, a sensor for detecting the temperature of the molten metal inside the crucible and the guide channel can be arranged. By obtaining the temperature of the molten metal, the heating of the first induction coil and the second induction coil can be controlled to ensure the consistency of the temperature of the molten metal and the stability of the temperature of the molten metal flowing out of the flow channel; for example, the temperature of the flowing copper liquid can be controlled at 1250°C.

[0092] In some embodiments, the smelting chamber 41 includes a first smelting chamber 411 and a second smelting chamber 412; the crucible 401 is disposed in the first smelting chamber 411, the flow guide tube 403 extends into the second smelting chamber 412, and a seal 413 is disposed between the first smelting chamber and the crucible and / or between the first smelting chamber and the flow guide tube, and the first smelting chamber and the second smelting chamber are isolated into two independent chambers by the setting of the seal. In this case, the crucible can be stably disposed in the smelting chamber, and a good closed space can be formed in the first smelting chamber.

[0093] Correspondingly, at this time, the first induction coil 405 is arranged in the first smelting chamber, and the second induction coil 406 is arranged in the second smelting chamber.

[0094] One end of the stopper rod 407 extends out of the smelting chamber to facilitate the operation of the switch control unit to control the opening and closing of the smelting device; the stopper rod adopts a split structure, so that the stopper rod can be extended out of the smelting chamber, and the liquid flow state can be controlled without repeatedly opening the smelting chamber during the molding process, thereby improving the molding efficiency and emergency handling capabilities. A sealing structure is provided between the stopper rod and the smelting chamber to seal the connection position between the stopper rod and the smelting chamber.

[0095] A cooling jacket may be provided on the smelting chamber 41 for cooling the interior of the smelting chamber during the production process. The cooling jacket may be provided on the top cover of the smelting chamber, and circulating cooling water is introduced into the cooling jacket to cool the smelting chamber.

[0096] Reference Figure 2 The atomizing chamber is provided with a water cooling jacket for water cooling the atomizing chamber. A vacuum main pipe can be provided on the atomizing chamber for vacuuming the atomizing chamber, and a vacuum branch pipe is provided on the smelting chamber, and the vacuum branch pipe is connected to the vacuum main pipe for vacuuming the smelting chamber.

[0097] Of course, various sensors and test instruments for pressure and temperature detection may also be provided in the atomization chamber and the smelting chamber to detect the pressure and temperature.

[0098] A manhole can be provided on the atomizing chamber to facilitate entry into the atomizing chamber for installation, commissioning and maintenance operations of the centrifugal forming device and smelting device inside.

[0099] On the other hand, the present invention also provides a method for assembling and debugging a metal powder forming system, comprising the following steps: Insert the main shaft with the clamp installed into the installation position on the installation seat from the installation hole of the support cylinder, fix the clamp to the installation seat, and fix the centrifugal rotating unit to the installation unit; Extend the water inlet pipe and the water outlet pipe into the support cylinder of the installation unit through the support installation pipe, and connect them to the water cooling cavity respectively; The centrifugal forming device is fixedly assembled on the base, and the horizontality of the rotating disk, the distance between the rotating disk and the melt outlet of the smelting system, and the centering position are adjusted by adjusting the components, so that the rotating disk is horizontally arranged and the center of the rotating disk and the center of the outlet of the smelting device are located on the same vertical line.

[0100] After completing the assembly and commissioning of the system, the atomization chamber and the smelting chamber are evacuated by a vacuum pump; Then, inert gas is injected into the atomizing chamber and the smelting chamber respectively, and the internal gas is replaced repeatedly to make the oxygen content in the atomizing chamber and the smelting chamber less than 100 ppm; Open the balance valve on the vacuum branch pipe to balance the air pressure in the atomizing chamber and the smelting chamber; The crucible and the flow guide tube are continuously heated by the first induction unit and the second induction unit, so that the temperature of the copper melt inside reaches 1250° C.; Operate the stopper rod to open the nozzle, so that the copper melt flows from the nozzle in a stable column to the center of the rotating disk; The copper melt falling on the rotating disk is thrown out in the radial direction of the rotating disk under the centrifugal effect of the high-speed rotating disk and is broken into tiny droplets in the process. After being thrown out, the droplets are quickly cooled and solidified into spherical powder in the inert atmosphere in the atomization chamber.

[0101] Based on the metal powder forming system in the above embodiment of the present invention, the copper powder prepared is of high quality, good sphericity, oxygen content less than 200ppm, and bulk density greater than 4.9g / cm 3 , fluidity is less than 60s / 50g, and the satellite hollow powder rate is less than 5‰; the system has a high degree of industrialization in preparing copper powder, with a production capacity of 100 tons / year, and a recovery rate of 15-53μm powder products of more than 90%. The copper powder prepared by the preparation can well meet the performance requirements of additive manufacturing.

[0102] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. used to indicate the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, or are the orientation or position relationship where the product of the invention is usually placed when used. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0103] In addition, if the terms "horizontal" or "vertical" appear in the description of the present invention, it does not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0104] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood in combination with specific circumstances.

[0105] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any simple modification or equivalent change made to the above embodiment based on the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. Metal powder forming system, characterized in that: include: An atomization chamber, wherein a closed chamber is formed in the atomization chamber; A centrifugal forming device, the centrifugal forming device comprises a centrifugal rotating unit and a mounting unit, the centrifugal rotating unit comprises a main shaft and a centrifugal rotating assembly arranged on the main shaft, the centrifugal rotating assembly comprises a rotating disk, the main shaft is used to drive the rotating disk to rotate, so that the molten metal dripping on the rotating disk is thrown outward under the action of centrifugal force; the mounting unit comprises a base, an adjustment assembly and a mounting assembly, the mounting assembly is used to install the main shaft of the centrifugal rotating unit, the adjustment assembly is arranged between the base and the mounting assembly, and is used to fix the mounting assembly on the base and adjust the horizontality of the rotating disk arranged on the main shaft and the position of the central axis of the rotating disk; the base is connected to the atomization chamber, so that the centrifugal forming device is suspended in the atomization chamber; The smelting system comprises a closed smelting chamber and a smelting device arranged in the smelting chamber, wherein the smelting device is used to melt the metal, and the smelting chamber is arranged on the top of the atomizing chamber so that the molten liquid discharge port of the smelting device is located in the atomizing chamber and above the rotating disk.

2. The metal powder forming system according to claim 1, characterized in that: The adjustment component comprises: Base; A slide plate adjustment assembly is arranged on the base, and the slide plate adjustment assembly includes a lower slide plate arranged on the base and an upper slide plate arranged on the lower slide plate; The lower slide plate is slidably connected to the base, so that the lower slide plate can slide on the base along the X-axis direction, and an X-direction positioning adjustment mechanism is provided between the lower slide plate and the base, for adjusting the position of the lower slide plate on the base along the X-direction and fixing the lower slide plate on the base; The upper slide plate is slidably connected with the lower slide plate so that the upper slide plate can slide on the lower slide plate along the Y-axis direction. A Y-direction positioning adjustment mechanism is provided between the upper slide plate and the lower slide plate for adjusting the position of the upper slide plate on the lower slide plate along the Y-direction and fixing the upper slide plate on the lower slide plate; And a level adjustment component arranged between the base and the pedestal, the level adjustment component includes at least three groups of adjustment screw assemblies, and the adjustment screw assembly includes an adjustment screw and an adjustment nut which fixes the adjustment screw to the base and the pedestal at both ends respectively.

3. The metal powder forming system according to claim 1, characterized in that: The installation assembly includes: A hollow support cylinder, wherein the support cylinder is arranged on the adjustment assembly; The mounting seat is arranged on the supporting tube, the mounting seat includes a water cooling jacket arranged in an annular shape, the supporting tube is provided with a water cooling channel, the water cooling channel is connected with the water cooling jacket at the bottom of the water cooling jacket, so that the cooling medium can circulate in the water cooling jacket through the water cooling channel.

4. The metal powder forming system according to claim 3, characterized in that: The water-cooling channel is an annular water-cooling cavity formed along the circumferential direction of the support tube. A plurality of connecting channels are arranged between the water-cooling cavity and the water-cooling jacket, so that the cooling medium can circulate between the water-cooling cavity and the water-cooling jacket. A water inlet and a water outlet are arranged on the water-cooling cavity, and both the water inlet and the water outlet are arranged toward the inside of the support tube.

5. The metal powder forming system according to claim 4, characterized in that: The base is connected to the atomization chamber via a mounting tube that is horizontally arranged to penetrate the atomization chamber, and the mounting tube is fixedly connected to the atomization chamber at both ends; The base, the seat and the adjusting assembly are provided with pipeline channels for water inlet and water outlet pipelines extending from the mounting pipe into the supporting cylinder, the water inlet pipeline is connected to the water inlet, and the water outlet pipeline is connected to the water outlet.

6. The metal powder forming system according to claim 1, characterized in that: The centrifugal rotating assembly comprises a rotating support, the rotating support comprises a mounting portion and a rotating handle, the rotating handle is connected to the main shaft, and the mounting portion is provided with a mounting groove; The bottom of the rotating disk is provided with a mounting boss matched with the mounting groove, and the mounting boss is matched and arranged in the mounting groove; A mounting hole is provided on the rotating handle along its axial direction, a threaded hole connected to the mounting hole is provided on the mounting boss, a connecting screw is provided in the mounting hole, the connecting screw is connected to the rotating disk through the threaded hole, and the connecting screw applies a force along the central axis direction of the rotating disk to the rotating disk, thereby fixing the rotating disk on the rotating support.

7. The metal powder forming system according to claim 1, characterized in that: The smelting device comprises: A crucible, wherein a flow guide tube is arranged at the bottom of the crucible, wherein a flow guide channel communicating with the interior of the crucible is arranged in the flow guide tube, wherein a nozzle is arranged at the outlet of the flow guide channel, wherein a flow channel is arranged in the nozzle, wherein the flow channel comprises a transition section and a flow guide section arranged in sequence, wherein the transition section is a conical structure whose diameter gradually decreases from the inlet to the outlet, and the flow guide section is a through hole having the same diameter as the outlet of the transition section; A heating unit, the heating unit comprising a first induction coil for heating the crucible and a second induction coil for heating the flow guide tube; A switch control unit, the switch control unit includes a stopper rod passing through the crucible and inserted into the guide channel, a switch valve assembly is arranged at the end of the stopper rod, the switch valve assembly includes a stopper valve matched with the transition section and a needle valve matched with the drainage section, and when the switch valve assembly is in a closed state, the needle valve is inserted through the drainage section.

8. The metal powder forming system according to claim 7, characterized in that: The nozzle end is located at the flow channel outlet, and a boss is protruding outward. The drainage section passes through the boss along the axis of the boss, and the circumferential dimension of the boss at one end of the drainage section outlet is set to be equivalent to the diameter of the drainage section.

9. The metal powder forming system according to claim 7 or 8, characterized in that: The smelting chamber includes a first smelting chamber and a second smelting chamber; The crucible is arranged in the first smelting chamber, the guide tube is extended into the second smelting chamber, a sealing member is arranged between the first smelting chamber and the crucible and the guide tube, and the first smelting chamber and the second smelting chamber are separated into two independent chambers, and the flow channel outlet of the nozzle in the smelting device is arranged in the atomizing chamber and close to the rotating disk.

10. A method for assembling and debugging a metal powder forming system, characterized in that: The following steps are involved: Extend the water inlet pipe and the water outlet pipe into the support cylinder of the installation unit through the support installation pipe, and connect them to the water cooling cavity respectively; The centrifugal forming device is fixedly assembled on the base, and the horizontality of the rotating disk, the distance between the rotating disk and the molten liquid discharge port of the smelting system, and the centering position are adjusted by adjusting the components, so that the rotating disk is horizontally arranged and the center of the rotating disk and the center of the discharge port of the smelting device are located on the same vertical line.

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