A powdering device

Abstract

The application provides a powder making device, and relates to the technical field of powder making.The powder making device comprises an atomization platform, a powder making torch and two auxiliary torches, the powder making torch and the two auxiliary torches are located above the atomization platform, a plane passing through the atomization platform and the axis of the powder making torch is a first separation plane, a plane passing through the axis of the atomization platform and being perpendicular to the first separation plane is a second separation plane, the powder making torch and the two auxiliary torches are located on different sides of the second separation plane, and the two auxiliary torches are located on the two sides of the first separation plane.The side where the two auxiliary torches are located is a first side, the side where the powder making torch is located is a second side, the direction of a first component force of the force exerted on the liquid drops by the powder making torch and pointing from the second side to the first side is opposite to the direction of a third component force of the resultant force of the forces exerted on the liquid drops by the two auxiliary torches and pointing from the first side to the second side, so that the moving speed of the liquid drops in the horizontal direction is reduced, and the liquid drops are prevented from being blown out of the atomization platform.

Description

Technical Field

[0001] This application relates to the field of powder making technology, and in particular to a powder making apparatus. Background Technology

[0002] Metal powders have small dimensions and large specific surface areas, resulting in metal parts with excellent properties such as superior mechanical properties, unique magnetic properties, high electrical conductivity and diffusivity, and high reactivity and catalytic activity. These properties have led to the increasingly widespread application of metal powder-based parts in aerospace, shipbuilding, automotive, metallurgy, and chemical industries. The composition, particle size, sphericity, and hollow powder ratio of metal powders are key factors affecting the performance of the final metal parts.

[0003] Metal powder preparation methods include ball milling, VIGA (Vacuum induction melting gas atomization), EIGA (Electrode induction melting gas atomization), PREP (Plasma rotating electrode atomization), and ultrasonic atomization. When using ball milling, controlling the oxygen content is difficult. VIGA and EIGA technologies consume large amounts of protective gas, and the nozzle structure, atomizing medium, and the physical properties of the molten metal itself affect the powder yield and quality. Furthermore, small-scale VIGA and EIGA equipment, due to the characteristics of the furnace itself, produces metal powders with low fine powder yield and poor sphericity. While PREP consumes less protective gas and is suitable for preparing high-temperature, low-density materials, it also results in a low fine powder yield. Powders produced using ultrasonic atomization technology have a D50 of 30-50 μm and a fine powder yield exceeding 80%. Furthermore, its actual production performance surpasses that of ball milling, VIGA, EIGA, and PREP. Therefore, ultrasonic atomization is widely used in metal powder preparation.

[0004] Ultrasonic atomization powder preparation typically uses an electric arc as a heating source. The arc melts the bar stock, causing molten metal droplets to fall onto an atomization platform. Driven by the mechanical vibrations converted from ultrasonic waves, the atomization platform vibrates at high frequency. Under this high-frequency vibration, the molten metal droplets detach from the platform as tiny droplets and then solidify into spherical powder. After solidification, the powder is transported by a plasma torch to a cyclone dust collector. However, when using ultrasonic atomization to prepare metals or alloys with low density, the blown force on the droplets is relatively large, resulting in a high horizontal velocity. This causes the droplets to be blown outside the atomization platform, preventing proper atomization. Summary of the Invention

[0005] In view of this, this application provides a powder-making apparatus to solve the problem that when preparing metals or alloys with low density, the droplets are subjected to a large blowing force, which results in a large horizontal velocity of the droplets, causing the droplets to be blown outside the atomization platform and unable to be atomized into powder.

[0006] According to one aspect of this application, a powder-making apparatus is provided, the powder-making apparatus including an atomizing platform, a powder-making torch and two auxiliary torches, wherein the powder-making torch and the two auxiliary torches are all located above the atomizing platform in the direction of gravity, and a plane passing through the axis of the atomizing platform and the axis of the powder-making torch is defined as a first dividing plane, and a plane passing through the axis of the atomizing platform and perpendicular to the first dividing plane is defined as a second dividing plane. The pulverizing torch is located on one side of the second dividing plane, the two auxiliary torches are located on the other side of the second dividing plane, and the two auxiliary torches are respectively located on both sides of the first dividing plane.

[0007] Preferably, the distance between the auxiliary torch and the atomizing platform in the direction of gravity is greater than the distance between the pulverizing torch and the atomizing platform in the direction of gravity.

[0008] Preferably, the distance between the auxiliary torch and the atomizing platform in the direction of gravity is greater than or equal to 28 mm and less than or equal to 32 mm.

[0009] Preferably, the two auxiliary torches are symmetrical about the second dividing plane, and the distance between the auxiliary torches and the axis of the atomizing platform is greater than or equal to 8 mm and less than or equal to 12 mm.

[0010] Preferably, a plane perpendicular to the direction of gravity is defined as a reference plane, and the angle between the axis of the auxiliary torch and the reference plane is greater than or equal to 15 degrees and less than 90 degrees.

[0011] Preferably, the angle between the axis of the auxiliary torch and the first dividing plane is greater than or equal to 60 degrees and less than 90 degrees.

[0012] Preferably, the extensions of the axes of the two auxiliary torches intersect at an intersection point, and the distance between the intersection point and the axis of the atomizing platform is equal to 1 / 2 of the radius of the atomizing platform.

[0013] According to another aspect of this application, a powder-making apparatus is provided, the powder-making apparatus including a drive component, an atomizing platform and a powder-making torch, the powder-making torch being disposed above the atomizing platform in the direction of gravity, and a plane perpendicular to the direction of gravity being defined as a reference plane. The drive assembly is connected to the pulverizing torch and can drive the pulverizing torch to rotate, thereby adjusting the angle between the axis of the pulverizing torch and the reference plane.

[0014] Preferably, the pulverizing device further includes a connecting rod, which is connected to the pulverizing torch; The drive assembly includes a drive component and a mounting component. The mounting component is sleeved on the connecting rod, and the drive component is connected to the mounting component to drive the mounting component to rotate.

[0015] Preferably, the pulverizing device further includes an argon gas pipeline, an electrical wire, and a water channel. The argon gas pipeline, the electrical wire, and the water channel pass through the interior of the connecting rod and are connected to the pulverizing torch. The portions of the argon gas pipeline, the electrical wire, and the water channel exposed on the outside of the connecting rod are covered with a flexible material.

[0016] The powder-making apparatus of this application includes an atomizing platform, a powder-making torch, and two auxiliary torches. The powder-making torch and the two auxiliary torches are all located above the atomizing platform in the direction of gravity. A plane passing through the axis of the atomizing platform and the axis of the powder-making torch is defined as a first dividing plane, and a plane passing through the axis of the atomizing platform and perpendicular to the first dividing plane is defined as a second dividing plane. The powder-making torch is located on one side of the second dividing plane, and the two auxiliary torches are located on the other side of the second dividing plane. The two auxiliary torches are respectively located on both sides of the first dividing plane. The side containing the two auxiliary torches on either side of the second dividing plane is defined as the first side, and the side containing the pulverizing torch on either side of the second dividing plane is defined as the second side. The force exerted by the pulverizing torch on the droplet can be decomposed into a first component force and a second component force that are perpendicular to each other. The first component force is parallel to the reference plane perpendicular to the direction of gravity, and its direction is from the second side to the first side. The second component force is parallel to the direction of gravity. The resultant force exerted by the two auxiliary torches on the droplet can be decomposed into a third force and a fourth force that are perpendicular to each other. The third force is parallel to the reference plane, and its direction is from the first side to the second side. The fourth force is parallel to the direction of gravity. Because the direction of the third force is opposite to the direction of the first component force, this reduces the speed of the droplet in the horizontal direction, preventing the droplet from being blown out of the atomization platform and ensuring the smooth operation of atomization pulverization. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1A three-dimensional structural schematic diagram of the powder-making apparatus of Embodiment 1 is shown from one perspective. Figure 2 A three-dimensional structural schematic diagram of the powder-making apparatus of Embodiment 1 is shown from another perspective; Figure 3 A three-dimensional structural schematic diagram of the powder-making apparatus of Embodiment 1 is shown from another perspective; Figure 4 A schematic diagram of the planar structure of the powder-making apparatus of Embodiment 2 is shown; Figure 5 A three-dimensional structural schematic diagram of the powder-making apparatus of Embodiment 2 is shown; Figure 6 This diagram illustrates the force analysis of a droplet when using an existing powder-making apparatus.

[0019] Icons: 1-Powder-making torch; 2-Auxiliary torch; 3-Connecting rod; 4-Atomization platform; 5-Bar stock; 6-Gear; 7-Rack; 8-Droplet; 91-Mounting plate; 92-Support plate; 93-Rib; S1-First dividing plane; S2-Second dividing plane; S3-Reference plane. Detailed Implementation

[0020] The following detailed embodiments are provided to help the reader gain a comprehensive understanding of the methods, apparatus, and / or systems described herein. However, various changes, modifications, and equivalents of the methods, apparatus, and / or systems described herein will be apparent after understanding the disclosure of this application. For example, the order of operations described herein is merely illustrative and is not limited to the order set forth herein; changes that will be apparent after understanding the disclosure of this application are possible, except for operations that must occur in a specific order. Furthermore, for clarity and brevity, descriptions of features known in the art may be omitted.

[0021] The features described herein may be implemented in different forms and should not be construed as being limited to the examples described herein. Rather, the examples described herein have been provided merely to illustrate some of the many feasible ways of implementing the methods, apparatus, and / or systems described herein that will be apparent upon understanding the disclosure of this application.

[0022] Throughout the specification, when an element (such as a layer, region, or substrate) is described as being "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, it may be directly "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, or there may be one or more other elements in between. In contrast, when an element is described as being "directly on" another element, "directly connected to" another element, "directly bonded to" another element, "directly on" another element, or "directly covering" another element, there may be no other elements in between.

[0023] As used herein, the term “and / or” includes any one of the relevant items listed and any combination of any two or more items.

[0024] Although terms such as “first,” “second,” and “third” may be used herein to describe individual components, assemblies, regions, layers, or parts, these components, assemblies, regions, layers, or parts are not limited by these terms. Rather, these terms are used only to distinguish one component, assembly, region, layer, or part from another. Therefore, without departing from the teachings of the examples described herein, the first component, assembly, region, layer, or part referred to as the second component, assembly, region, layer, or part may also be referred to as the second component, assembly, region, layer, or part.

[0025] For ease of description, spatial relation terms such as “above,” “upper,” “below,” and “lower” are used herein to describe the relationship between one element and another, as shown in the accompanying drawings. Such spatial relation terms are intended to include not only the orientation depicted in the drawings but also different orientations of the device during use or operation. For example, if the device in the drawings is flipped, an element described as being “above” or “upper” relative to another element will subsequently be “below” or “lower” relative to that other element. Therefore, the term “above” includes both “above” and “below” orientations depending on the spatial orientation of the device. The device may also be positioned in other ways (e.g., rotated 90 degrees or in other orientations), and the spatial relation terms used herein will be interpreted accordingly.

[0026] The terminology used herein is for the purpose of describing various examples only and is not intended to limit this disclosure. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms “comprising,” “including,” and “having” enumerate the stated features, quantities, operations, components, elements, and / or combinations thereof, but do not exclude the presence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof.

[0027] Variations in the shapes shown in the accompanying drawings may occur due to manufacturing techniques and / or tolerances. Therefore, the examples described herein are not limited to the specific shapes shown in the accompanying drawings, but include changes in shape that may occur during manufacturing.

[0028] The features of the examples described herein can be combined in various ways that will be apparent upon understanding the disclosure of this application. Furthermore, although the examples described herein have a wide variety of constructions, other constructions are possible, as will be apparent upon understanding the disclosure of this application.

[0029] When preparing low-density metals or alloys using ultrasonic atomization powder preparation, the bar stock 5 melts to form droplets 8. As droplets 8 fall, they experience a significant blowing force, resulting in a high horizontal velocity. Consequently, droplets 8 are blown off the atomization platform 4, preventing further atomization. The following theoretical calculations, using titanium-silicon alloy as an example, will illustrate this phenomenon of droplets 8 being blown onto the atomization platform 4.

[0030] When metals melt, volume changes are ignored, and density is calculated based on the mass ratio of their respective elements. Taking a titanium-silicon alloy where titanium accounts for 21.7% of the mass and silicon for 78.3% as an example, the density of the titanium-silicon alloy is... .

[0031] radius of titanium-silicon alloy drop ,in Let g be the surface tension, g be the gravitational acceleration, and f be the trimming factor, which can be 0.1 here.

[0032] Surface tension ,in The surface tension of a pure metal; = , Generally, it's between 1.1 and 1.3. 1.3 can be taken. Since tungsten electrodes are used for heating during powder preparation, and the titanium content in the titanium-silicon alloy is low, the effect of titanium on surface tension is ignored here. The melting point of silicon can be chosen. The melting point of the titanium-silicon alloy; The surface tension of silicon can be selected as the metric, i.e. .

[0033] The surface tension of liquid titanium-silicon alloys can be calculated based on the titanium-silicon binary phase diagram. .

[0034] radius of titanium-silicon alloy drop .

[0035] Quality of titanium-silicon alloy .

[0036] During pulverization, the pulverizing torch 1 can blow out argon gas, and the flow rate of the argon gas is... ,in Argon density ( A is the cross-sectional area of ​​argon density flow ( ), The flow rate of argon gas ( (When the argon flow rate Q is 15) (Right now (At time), argon density flow cross-sectional area The gas flow rate at that time satisfies the following equation:

[0037] Therefore, .

[0038] Argon blowing force ,in The surface area of ​​droplet 8 is... Based on this, the blowing force of argon gas can be obtained. .

[0039] During powder production, the force experienced by droplet 8 is as follows: Figure 6 As shown. The plane perpendicular to the direction of gravity is defined as the reference plane S3, and the blowing force applied by the pulverizing torch 1... The angle between the direction of the droplet 8 and the reference plane S3 is 45 degrees. At this time, the entire droplet 8 is subjected to a force in the horizontal direction. Equal to the blowing force of argon gas The component of force in the horizontal direction, i.e. Droplet 8 is subjected to a force in the vertical direction. Equal to the blowing force of argon gas The sum of the vertical component of the force and gravity, i.e. The acceleration of droplet 8 in the horizontal direction =201.1 The acceleration of droplet 8 in the horizontal direction .

[0040] The distance of droplet 8 from atomizing platform 4 at its initial position The distance from the droplet 8 to the edge of the atomizing platform 4 is 0.025m, located horizontally at the center of the atomizing platform. Taking 0.02m as an example, the calculation shows the time it takes for 8 droplets to fall onto the atomizing platform 4. When droplet 8 moves a distance of 0.02 in the horizontal direction, the travel time of droplet 8 is... Obviously, the time it takes for droplet 8 to move horizontally to atomization platform 4 is less than the time it takes for droplet 8 to fall onto atomization platform 4. In other words, droplet 8 will fall outside of atomization platform 4.

[0041] Based on the above analysis, it can be seen that when preparing metals or alloys with low density, the droplet 8 is subjected to a large blowing force, and the droplet 8 will be blown outside the atomization platform 4 and cannot be atomized into powder. Based on this, the powder making device in Embodiment 1 and Embodiment 2 of this application is proposed.

[0042] Example 1 In this embodiment, as Figures 1 to 3 As shown, the powder-making device includes an atomizing platform 4, a powder-making torch 1, and two auxiliary torches 2. The powder-making torch 1 and the two auxiliary torches 2 are all located above the atomizing platform 4 in the direction of gravity. The plane passing through the axis of the atomizing platform 4 and the axis of the powder-making torch 1 is defined as the first dividing plane S1, and the plane passing through the axis of the atomizing platform 4 and perpendicular to the first dividing plane S1 is defined as the second dividing plane S2. The powder-making torch 1 is located on one side of the second dividing plane S2, and the two auxiliary torches 2 are located on the other side of the second dividing plane S2. The two auxiliary torches 2 are located on both sides of the first dividing plane S1. The side containing the two auxiliary torches 2 on either side of the second dividing plane S2 is defined as the first side, and the side containing the powder-making torch 1 on either side of the second dividing plane S2 is defined as the second side. The force exerted by the powder-making torch 1 on the droplet can be decomposed into a first component force and a second component force that are perpendicular to each other. The first component force is parallel to the reference plane S3, which is perpendicular to the direction of gravity, and its direction is from the second side to the first side. The second component force is parallel to the direction of gravity. The resultant force exerted by the two auxiliary torches 2 on the droplet can be decomposed into a third force and a fourth force that are perpendicular to each other. The third force is parallel to the reference plane S3, and its direction is from the first side to the second side. The fourth force is parallel to the direction of gravity. Since the direction of the third force is opposite to the direction of the first component force, this reduces the speed of the droplet in the horizontal direction, thus preventing the droplet from being blown out of the atomizing platform 4 and ensuring the smooth operation of atomization powder making.

[0043] It should be noted that the first dividing plane S1, the second dividing plane S2, and the reference plane S3 perpendicular to the direction of gravity described above are only for the purpose of illustrating the relative positions of the pulverizing torch 1 and the auxiliary torch 2. In the actual pulverizing device, the first dividing plane S1, the second dividing plane S2, and the reference plane S3 do not exist.

[0044] When one auxiliary torch 2 is set up, the pulverizing torch 1 and the auxiliary torch 2 can only be set opposite each other radially on the atomizing platform 4, that is, the axes of the pulverizing torch 1 and the auxiliary torch 2 are both located on the first dividing plane S1. However, the droplets move within a certain range. When the droplets deviate significantly from the first dividing plane S1, setting the auxiliary torch 2 only on the radially opposite side of the pulverizing torch 1 on the atomizing platform 4 may result in the auxiliary torch 2 being unable to apply force to the droplets. Setting three auxiliary torches 2 occupies a lot of space and is inconvenient to install. Setting two auxiliary torches 2 ensures that the auxiliary torches 2 can apply force to the droplets, occupies less space, and can meet the pulverizing requirements.

[0045] Preferably, the distance between the auxiliary torch 2 and the atomizing platform 4 in the direction of gravity is greater than the distance between the pulverizing torch 1 and the atomizing platform 4 in the direction of gravity.

[0046] Furthermore, after the droplets fall onto the atomizing platform 4, they vibrate at a high frequency under the drive of the atomizing platform 4. Under the high-frequency vibration, the droplets detach from the platform as tiny droplets, forming powder. The distance between the auxiliary torch 2 and the atomizing platform 4 in the direction of gravity is greater than or equal to 28 mm and less than or equal to 32 mm. This can prevent the blowing force applied by the auxiliary torch 2 from affecting powder collection.

[0047] Optionally, the distance between the auxiliary torch 2 and the atomizing platform 4 in the direction of gravity can be 28mm, 29mm, 30mm, 31mm, or 32mm, etc. Preferably, the distance between the auxiliary torch 2 and the atomizing platform 4 in the direction of gravity is 30mm.

[0048] In this embodiment, the two auxiliary torches 2 are symmetrical about the second dividing plane S2, and the distance between the axis of the auxiliary torches 2 and the axis of the atomizing platform 4 is greater than or equal to 8 mm and less than or equal to 32 mm.

[0049] Optionally, the distance between the axes of the auxiliary torch 2 and the atomizing platform 4 can be 8mm, 9mm, 10mm, 11mm, or 12mm, etc. Preferably, the distance between the axes of the auxiliary torch 2 and the atomizing platform 4 is 10mm.

[0050] Furthermore, the trajectory of the powder formed after the droplets detach from the platform is simulated. The powder moves between the edge plane and the upper plane of the atomizing platform 4. The edge plane makes a 15-degree angle with the reference plane S3, and the upper plane of the atomizing platform 4 is parallel to the reference plane S3. Therefore, the angle between the axis of the auxiliary torch 2 and the reference plane S3 is greater than or equal to 15 degrees and less than 90 degrees to avoid the auxiliary torch 2 affecting the collection of powder.

[0051] Furthermore, the forces exerted on the droplets by the pulverizing torch 1 and the auxiliary torch 2 are equal. When the resultant force exerted by the two auxiliary torches 2 in the horizontal direction is equal to the component force exerted by the auxiliary torch 2 in the horizontal direction, the forces exerted by the two auxiliary torches 2 and the pulverizing torch 1 in the horizontal direction are canceled out, and the droplets fall vertically. In other words, the resultant force exerted by the two auxiliary torches 2 in the horizontal direction should be less than the component force exerted by the auxiliary torch 2 in the horizontal direction. ,Right now That is to say, the angle α between the axis of the auxiliary torch 2 and the first dividing plane S1 is greater than or equal to 60 degrees and less than 90 degrees.

[0052] Optionally, the extensions of the axes of the two auxiliary torches 2 intersect at an intersection point, and the distance between the intersection point and the axis of the atomizing platform 4 is equal to 1 / 2 of the radius of the atomizing platform 4, so as to ensure that the two auxiliary torches 2 can apply force to the droplets.

[0053] Optionally, the powder-making torch 1 can be mounted on the connecting rod 3. The connecting rod 3 can be mounted on different structures, such as a frame, depending on the installation requirements of the powder-making torch 1. The frame can be fixed to the outer wall of the powder-making chamber, and part of the connecting rod 3 extends out of the powder-making chamber and is fixed to the frame. The auxiliary torch 2 can also be equipped with a corresponding connecting rod. Part of the connecting rod connected to the auxiliary torch 2 extends out of the powder-making chamber. A rack can be provided on the frame, and a gear is provided on the outside of the connecting rod connected to the auxiliary torch 2. The gear is mounted on the rack. By pushing the rack to move, the gear can be rotated, thereby adjusting the angle of the auxiliary torch 2 to ensure that the combined force of the forces applied by the two auxiliary torches 2 and the powder-making torch 1 can cause the droplets to fall onto the atomizing platform 4.

[0054] In addition, the auxiliary torch 2 is connected to argon gas pipelines, electrical wires, and water lines. The exterior of the argon gas pipelines, electrical wires, and water lines can be wrapped with heat-resistant canvas so that the installation angle of the auxiliary torch 2 can be adjusted.

[0055] Example 2 In this embodiment, as Figure 4 As shown, the powder-making device includes a drive assembly, an atomizing platform 4, and a powder-making torch 1. The powder-making torch 1 is positioned above the atomizing platform 4 in the direction of gravity, and a plane perpendicular to the direction of gravity is defined as the reference plane S3. The drive assembly is connected to the powder-making torch 1 and can drive the powder-making torch 1 to rotate, thereby adjusting the angle between the axis of the powder-making torch 1 and the reference plane S3. In this way, when preparing metals or alloys with low density, the direction of the force applied by the powder-making torch 1 can be adjusted to prevent droplets from being blown outside the atomizing platform 4.

[0056] Furthermore, the pulverizing device also includes a connecting rod 3, which is connected to the pulverizing torch 1; the driving assembly includes a driving component and a mounting component, the mounting component is sleeved on the connecting rod 3, and the driving component is connected to the mounting component to drive the mounting component to rotate. Thus, by driving the mounting component to rotate through the driving component, the pulverizing torch 1 can be rotated.

[0057] Optionally, the pulverizing device also includes argon gas pipelines, electrical wires, and water lines. The argon gas pipelines, electrical wires, and water lines pass through the interior of the connecting rod 3 and are connected to the pulverizing torch 1. The portions of the argon gas pipelines, electrical wires, and water lines exposed outside the connecting rod 3 are covered with flexible material to prevent the structure used to cover the argon gas pipelines, electrical wires, and water lines from affecting the rotation of the pulverizing torch 1.

[0058] Alternatively, the flexible material can be heat-resistant canvas.

[0059] Furthermore, the pulverizing torch 1 is located inside the pulverizing chamber. A portion of the connecting rod 3 extends from the mounting plate 91 (i.e., the mounting plate 91 is part of the pulverizing chamber). A support plate 92 is welded onto the mounting plate 91. A rib 93 is provided on the lower side of the support plate 92. One side of the rib 93 is connected to the support plate 92, and the other side is connected to the mounting plate 91. The rib 93 strengthens the connection between the support plate 92 and the mounting plate 91. In this embodiment, the form of the mounting component can be selected according to requirements, for example, such as... Figure 4 and Figure 5 As shown, the mounting component can be a gear 6. In this case, the drive mechanism also includes a rack 7, which is mounted on the support plate 92. The rack 7 is connected to the drive component (such as a linear motor, a slide cylinder, or other device capable of driving the rack 7 to perform linear motion), allowing the drive component to drive the rack 7 to move. The gear 6 meshes with the rack 7, and when the drive component drives the rack 7 to move, the gear 6 rotates, thereby driving the pulverizing torch 1 to rotate. Alternatively, the mounting component can be a turbine, in which case the drive mechanism also includes a worm gear. The worm gear is connected to the drive component, allowing the drive component to drive the worm gear to rotate. The worm gear meshes with the turbine, and when the drive component drives the worm gear to rotate, the turbine gear rotates, thereby driving the pulverizing torch 1 to rotate. Yet another example is a pulley, in which case the drive mechanism also includes a belt and a pulley mounted on the output shaft of the drive component. The pulley and pulley are connected by a belt, allowing the drive mechanism to drive the pulley to rotate, thereby driving the pulley to rotate via the belt, and thus driving the pulverizing torch 1 to rotate. Optionally, the drive structure in all of the above drive forms can be mounted on the support plate 92.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A powder-making apparatus, characterized in that, The powder-making device includes an atomizing platform, a powder-making torch, and two auxiliary torches. The powder-making torch and the two auxiliary torches are all located above the atomizing platform in the direction of gravity. The plane passing through the axis of the atomizing platform and the axis of the powder-making torch is defined as the first dividing plane, and the plane passing through the axis of the atomizing platform and perpendicular to the first dividing plane is defined as the second dividing plane. The pulverizing torch is located on one side of the second dividing plane, the two auxiliary torches are located on the other side of the second dividing plane, and the two auxiliary torches are respectively located on both sides of the first dividing plane; The distance between the auxiliary torch and the atomizing platform in the direction of gravity is greater than the distance between the pulverizing torch and the atomizing platform in the direction of gravity. The extensions of the axes of the two auxiliary torches intersect at an intersection point, and the distance between the intersection point and the axis of the atomizing platform is equal to 1 / 2 of the radius of the atomizing platform.

2. The powder-making apparatus according to claim 1, characterized in that, The distance between the auxiliary torch and the atomizing platform in the direction of gravity is greater than or equal to 28 mm and less than or equal to 32 mm.

3. The powder-making apparatus according to claim 1, characterized in that, The distance between the auxiliary torch and the axis of the atomizing platform is greater than or equal to 8 mm and less than or equal to 12 mm.

4. The powder-making apparatus according to claim 1, characterized in that, A plane perpendicular to the direction of gravity is defined as a reference plane, and the angle between the axis of the auxiliary torch and the reference plane is greater than or equal to 15 degrees and less than 90 degrees.

5. The powder-making apparatus according to claim 4, characterized in that, The angle between the axis of the auxiliary torch and the first dividing plane is greater than or equal to 60 degrees and less than 90 degrees.

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