Wire feeding device and plasma atomization pulverizing device

Abstract

The utility model relates to the technical field of atomization pulverization, in particular to a wire feeding device and a plasma atomization pulverization device.The wire feeding device comprises a shell located on one side of an atomization chamber, a wire storage cavity and a wire feeding cavity are formed in the shell, the wire storage cavity and the wire feeding cavity are communicated through a wire feeding channel, and the interior of the wire storage cavity is used for containing wires; and the first chuck component is arranged in the wire feeding cavity. According to the wire feeding device for plasma atomization pulverization, the pneumatic chucks with high positioning precision are adopted to clamp and feed wires, the two chucks are used for clamping the wires alternately, one chuck is fixed, and the other chuck reciprocates along the feeding center line to complete feeding of the wires. By means of the feeding mode, the non-slip and non-clamping feeding task of wires of various specifications can be completed, the operation stability of plasma atomization powder manufacturing equipment and the quality stability of powder products are improved, and meanwhile the plasma atomization powder manufacturing efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of atomization powder making, in particular to a wire feeding device and a plasma atomization powder making device. Background Art

[0002] The booming development of hot isostatic pressing, injection molding and other technologies has led to an increasing demand for metal powders, especially ultrafine powders. Plasma atomization powder making uses plasma arc to heat wire for atomization powder making. The power used to melt the unit raw material is much higher than that of rotary electrode atomization powder making, which makes it have a greater advantage in the recovery rate of fine powder.

[0003] As shown in Patent Documents 1 and 2, in the powder making scheme using wire, the current wire feeding mechanism uses two rollers to extrude and feed the wire. There is line contact between the rollers and the wire, and the friction is small, which is easy to slip, resulting in unstable wire feeding speed and easy jamming. It is even more impossible to complete the feeding of large diameter wire, which greatly limits the efficiency improvement of plasma atomization powder making equipment.

[0004] Prior art literature

[0005] Patent document 1CN104475744A Apparatus and method for preparing spherical titanium powder and titanium alloy powder by gas atomization

[0006] Patent document 2CN113145855A A device and method for preparing high melting point alloy powder by electric arc Utility Model Content

[0007] The first aspect of the utility model proposes a technical solution, a wire feeding device, comprising:

[0008] A shell body located at one side of the atomization chamber, wherein a wire storage chamber and a wire feeding chamber are provided in the shell body, wherein the wire storage chamber and the wire feeding chamber are connected via a wire feeding channel, and wherein the wire storage chamber is used for placing wire material;

[0009] A first chuck component is disposed in the wire feeding cavity;

[0010] A second chuck component is disposed in the wire feeding cavity;

[0011] Wherein, the first chuck component and the second chuck component can both clamp or release the wire, the first chuck component includes a portion exposed in the atomization chamber, and the second chuck component is configured to be able to reciprocate along the extension line direction of the wire feeding channel to clamp the wire and pass through the first chuck component to feed the wire toward the atomization chamber.

[0012] Preferably, the first chuck component and the second chuck component each have a pair of jaws, a jaw gap is formed between the pair of jaws, and the wire feeding chamber is connected with the atomization chamber through the jaw gap for the wire to pass through.

[0013] Preferably, a pair of the clamping jaws comprises a clamping position and a releasing position. In the clamping position, the jaw gap is located on both sides of the wire material, and in the releasing position, the jaw gap is located on the periphery of the wire material.

[0014] Preferably, an extension line of the wire feeding channel passes through the jaw gap.

[0015] Preferably, a guide plate is further provided in the wire feeding cavity, a guide rod is provided between the guide plate and the first chuck component, the second chuck component moves along the length direction of the guide rod, and a wire guide cone is provided on the inner side of the first chuck component, the second chuck component and the guide plate, the wire guide cone is provided with a guide cone surface, and the diameter of the guide cone surface gradually decreases along the wire feeding direction to a diameter close to the diameter of the wire.

[0016] Preferably, the spacing between the first chuck component and the guide plate is fixed, and a screw rod is also provided between the first chuck component and the guide plate, the screw rod is rotatably connected relative to the first chuck component and the guide plate, the second chuck component is transmission-connected to the screw rod, and a drive motor is also provided outside the atomization chamber, and the output end of the drive motor is connected to the screw rod for driving the screw rod to rotate, so that the second chuck component moves between the first chuck component and the guide plate.

[0017] Preferably, a direction corrector is provided on one side of the guide plate facing the wire feeding channel, and the direction corrector is used to guide the wire passing through the wire feeding channel to enter the wire guide cone on the inner side of the guide plate.

[0018] Preferably, the direction corrector includes a correction seat and a correction plate, the correction plate is fixed to the guide plate, the correction seat is fixed to the side of the correction plate away from the guide plate, a conical hole is provided on the correction plate, and a pair of wire pressing wheels is provided on the correction seat, and a wire passing hole coaxial with the conical hole is formed between the wire pressing wheels.

[0019] Preferably, the air pressure in the wire storage chamber and the wire feeding chamber is greater than the air pressure in the powder making chamber.

[0020] The second aspect of the utility model proposes a technical solution, a plasma atomization powder making device, comprising:

[0021] An atomizing chamber, which is provided with a powder making chamber for powder making;

[0022] A plasma gun connected to a first side wall of the atomization chamber;

[0023] The wire feeding device described above.

[0024] Compared with the prior art, the advantages of the utility model are:

[0025] The wire feeding device for plasma atomization powder making proposed by the utility model adopts a pneumatic chuck with high positioning accuracy to clamp and feed the wire, and uses two chucks to clamp the wire alternately, one of which is fixed, and the other reciprocates along the feed center line to complete the feeding of the wire. Through this feeding method, the task of feeding wires of various specifications without slipping or jamming can be completed, while improving the operating stability of the plasma atomization powder making equipment and the quality stability of the powder product, the efficiency of the plasma atomization powder making is also improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings are not intended to be drawn to scale. In the accompanying drawings, each identical or nearly identical component shown in various figures may be represented by the same reference numeral. For the sake of clarity, not every component is labeled in each figure. Now, embodiments of various aspects of the utility model will be described by way of example and with reference to the accompanying drawings, in which:

[0027] Figure 1 It is a structural schematic diagram of a plasma atomization powder making device shown in the utility model;

[0028] Figure 2 It is a structural schematic diagram of the wire feeding component shown in the utility model;

[0029] Figure 3 yes Figure 2 The structural diagram at A in the middle;

[0030] Figure 4 It is a structural schematic diagram of the clamping jaws shown in the utility model;

[0031] Figure 5 yes Figure 4 Schematic diagram of the clamping state of the clamping jaws at B in the middle;

[0032] Figure 6 yes Figure 4 Schematic diagram of the gripper release state at B in the middle;

[0033] Figure 7 It is a structural schematic diagram of the direction corrector shown in the utility model. DETAILED DESCRIPTION

[0034] In order to better understand the technical content of the present invention, specific embodiments are described below with reference to the accompanying drawings.

[0035] In traditional atomization powder making equipment, two rollers are used to extrude and feed the wire. There is line contact between the roller and the wire, which results in low friction and easy slippage, causing unstable wire feeding speed and easy jamming. It is even more impossible to feed large diameter wire, which greatly limits the efficiency improvement of plasma atomization powder making equipment.

[0036] Therefore, the wire feeding device for plasma atomization powder making proposed in the utility model adopts a pneumatic chuck with high positioning accuracy to clamp and feed the wire, and uses two chucks to clamp the wire alternately, one of which is fixed and the other reciprocates along the feed center line to complete the feeding of the wire.

[0037] This feeding method can complete the task of feeding wires of various specifications without slipping or jamming. While improving the operating stability of the plasma atomization powder making equipment and the quality stability of the powder products, it also improves the efficiency of the plasma atomization powder making.

[0038] At the same time, the wire feeding space is filled with cooling gas, such as the same inert gas as the working gas of the plasma gun, so that the air pressure in the independent space is slightly greater than the air pressure in the atomization chamber. While the cooling gas cools down the parts of the wire feeding device, it is sprayed into the atomization chamber at high speed along the gap between the clamping jaws, preventing metal powder from entering the wire feeding device and extending the service life of the wire feeding device. The cooling gas sprayed into the atomization chamber at high speed will also cool down the metal powder, causing it to cool down quickly.

[0039]

Plasma atomization powder making device

[0040] Combination Figure 1 As shown, the present invention proposes a technical solution, a plasma atomization powder making device, including an atomization chamber, a plasma gun 50 and a wire feeding component, a powder making chamber for powder making is provided inside the atomization chamber, the plasma gun 50 is connected to the first side cavity wall 101 of the atomization chamber, and the wire feeding component is connected to the second side cavity wall 102 of the atomization chamber.

[0041] It should be understood that in the atomization powder making process, the powder making chamber needs to be vacuumed first and then filled with inert gas. The atomization powder making conditions are met only when the pressure of the inert gas reaches the set value. The wire is fed into the atomization chamber from the second side cavity wall 102 of the atomization chamber through the wire feeding component. The plasma gun 50 is located at the first side cavity wall 101 of the atomization chamber. When it is close to the predetermined distance from the plasma gun 50, a plasma arc is formed between the plasma gun 50, causing the wire to melt to form ultrafine powder.

[0042] In this process, the feeding speed and stability of the wire have a great influence on the quality of the formed powder. Therefore, how to better control the movement of the wire at a predetermined speed is an important condition for forming high-quality powder.

[0043] Combination Figure 1-2As shown, the wire feeding component includes a wire storage chamber and a wire feeding chamber, and the wire storage chamber and the wire feeding chamber are connected through the wire feeding channel 13; a first chuck component 31 and a second chuck component 32 are provided in the wire feeding chamber, and a pair of jaws 311 of the first chuck component 31 and the second chuck component 32 can clamp or release the wire 1a; a jaw gap 3111 is formed between the pair of jaws 311, and the wire feeding chamber and the powder making chamber are connected through the jaw gap 3111 of the first chuck component 31, and the extension line of the wire feeding channel 13 passes through the jaw gap 3111; the second chuck component 32 is configured to be able to move back and forth along the extension line direction of the wire feeding channel 13, so that the wire 1a passes through the jaw gap 3111 of the first chuck component 31 and enters the atomization chamber.

[0044] Among them, the purpose of the wire storage chamber is to accommodate and hold the rolled wire material, and a first chuck component 31 and a second chuck component 32 are provided in the wire feeding chamber. The jaws 311 of the first chuck component 31 and the second chuck component 32 can clamp or release the wire material 1a, and the second chuck component 32 can reciprocate along the extension line direction of the wire feeding channel 13.

[0045] In this way, the clamping jaws 311 form a connection (surface contact connection) or a non-connected state with the wire in a clamping manner. By controlling the movement state of the first chuck component 31 and the second chuck component 32, the wire can be controlled to be stably fed into the powder making chamber in a reliable and non-slip feeding manner.

[0046] Combination Figure 1 As shown, the pump air pipe 40 is divided into two groups, the first ends of the two groups of pump air pipes 40 are connected to the air source, and the second ends are respectively connected to the first chuck component 31 and the second chuck component 32, and are used to control the clamping state of a pair of jaws 311. Specifically, the jaws 311 are provided with a first joint and a second joint. One group of pump air pipes 40 includes two air supply pipes, which are respectively connected to the first joint and the second joint. When compressed gas is introduced from the first joint and the second joint respectively (the type of compressed gas is the same as the working gas of the plasma gun during atomization powder making), the jaws 311 will realize the clamping and releasing actions.

[0047] Combination Figure 2 As shown, a guide plate 33 is also provided in the wire feeding chamber, a guide rod 34 is provided between the guide plate 33 and the first chuck component 31, and the second chuck component 32 moves along the length direction of the guide rod 34, wherein the spacing between the first chuck component 31 and the guide plate 33 is fixed, and a screw rod 35 is also provided between the first chuck component 31 and the guide plate 33, the screw rod 35 is rotatably connected relative to the first chuck component 31 and the guide plate 33, the second chuck component 32 is transmission-connected to the screw rod 35, and a driving motor 36 is also provided outside the atomization chamber, and the output end of the driving motor 36 is connected to the screw rod 35, for driving the screw rod 35 to rotate, so that the second chuck component 32 moves between the first chuck component 31 and the guide plate 33.

[0048] Specifically, the wire feeding cavity is surrounded by the shell 20, and the shell 20 has a first end cover, an outer shell, and a second end cover, and the first end cover and the second end cover are respectively installed on the two ends of the outer shell; the first chuck component 31 is installed on the first end cover, the first guide rod 341 and the second guide rod 342 are fixed to the first chuck component 31, and the second ends of the first guide rod 341 and the second guide rod 342 are connected to the guide plate 33, and the screw rod 35 and the first guide rod 341 and the second guide rod 342 are distributed in a triangle, so that the second chuck component 32 can obtain a stable motion state.

[0049] In a specific embodiment, the structures of the first chuck component 31 and the second chuck component 32 are roughly the same, both including a pair of jaws 311, a wire guide cone 313 and a mounting plate 312. The mounting plate 312 of the first chuck component 31 is provided with screw holes so that it can be assembled to the first end cover by bolts, and the mounting plate 312 of the second chuck component 32 is installed to the first guide rod 341, the second guide rod 342 and the screw rod 35.

[0050] In this way, the movement of the second chuck component 32 relies on the screw transmission method, which has the advantages of reliable transmission and high precision. At the same time, the clamping of the wire 1a by the clamping jaw 311 is surface contact, which can keep it from slipping during movement. The actual feeding distance has a small error with the computer input distance, which is conducive to automatic control.

[0051] In a specific embodiment, the second chuck component 32 clamps the wire and moves it in the direction of the plasma arc. At this time, the first chuck component 31 is released, and the front end of the wire is continuously heated by the plasma arc to be vaporized into powder. The second chuck component 32 reaches the front limit position (the left limit position in the figure), the first chuck component 31 clamps the wire, the second chuck component 32 releases the wire, and the second chuck component 32 retreats a distance α and reaches the rear limit position (the right limit position in the figure, the second chuck component 32 clamps the wire, the first chuck component 31 releases the wire, and the second chuck component 32 drives the wire 1a to be fed in the direction of the plasma arc; this reciprocating process can complete the feeding and powdering of the wire.

[0052] Combination Figure 1-2 As shown, a wire storage box 103 is installed on the outer side of the second end cover, and a sealing cover is detachably connected to the wire storage box 103. When the sealing cover is installed to the wire storage box 103, a wire storage cavity is formed inside, and a roller shaft 11 and a wire passing roller 12 are provided in the wire storage cavity. The wire 1a is wound on the outer wall of the roller shaft 11, and bypasses the wire passing roller 12 and passes through the wire feeding channel 13.

[0053] In this way, after a roll of wire is used up, when the wire is replaced, the sealing cover is opened, and a new wire is put in, and then the sealing cover is closed, so that the wire storage chamber, the wire feeding chamber, and the powder making chamber are in the same closed space.

[0054] Preferably, a direction corrector 14 is provided on one side of the guide plate 33 facing the wire feeding channel 13 , and the direction corrector 14 is used to guide the wire 1 a passing through the wire feeding channel 13 to enter the wire guide cone 313 inside the guide plate 33 .

[0055] Combination Figure 7 As shown, the direction corrector 14 includes a correction seat 141 and a correction plate 142. The correction plate 142 is fixed to the guide plate 33. The correction seat 141 is fixed to the side of the correction plate 142 away from the guide plate 33. A conical hole 143 is provided on the correction plate 142. A pair of wire pressing wheels 144 are provided on the correction seat 141. A wire passing hole coaxial with the conical hole 143 is formed between the wire pressing wheels 144.

[0056] Specifically, annular grooves are provided on the outer cylindrical surface of the wire pressing wheel 144. The shape enclosed by the two annular grooves on the axial cross-section of the wire pressing wheel 144 is a circle, and its diameter is slightly larger than the diameter of the wire 1a. When the wire enters the direction corrector from a direction deviating from the feed center line, one of the wire pressing wheels 144 will rotate, and the axis 1a of the corrected wire will coincide with the feed center line.

[0057] Preferably, the first chuck component 31, the second chuck component 32 and the inner side of the guide plate 33 are all provided with a wire guide cone 313, and the wire guide cone 313 is provided with a guide cone surface, and the diameter of the guide cone surface gradually decreases to a diameter close to the wire diameter along the wire feeding direction.

[0058] It can be understood that the second chuck component 32 needs to reciprocate, wherein when it moves to the left side as shown in the figure, the jaw 311 clamps, and when it moves to the right side as shown in the figure, the jaw 311 releases the wire 1a. When the jaw 311 of the second chuck component 32 is loosened, the wire 1a is positioned by the wire guide cone 313, so that the wire will not deviate too much from the axis of the jaw 311, thereby achieving re-clamping of the wire 1a after the second chuck component 32 moves to the limit position on the right.

[0059] Combination Figure 3-4 As shown, the first chuck component 31 and the second chuck component 32 each include a pair of clamping jaws 311, a clamping jaw gap 3111 is formed between the pair of clamping jaws 311, and the pair of clamping jaws 311 include a clamping position and a release position. Figure 5 As shown, in the clamping position, the jaw gap 3111 is located on both sides of the wire 1a, combined with Figure 6 As shown, in the release position, the jaw gap 3111 is located at the outer periphery of the wire 1 a.

[0060] Specifically, during the atomization powder making process, the working gas will be cooled by the vortex tube and then enter the interior of the shell 20 through the valve arranged in the shell 20, filling the wire feeding chamber and the wire storage chamber, and sprayed into the interior of the atomization chamber from the claw gap 3111. On the one hand, the cooling gas can cool the components of the wire feeding device to extend their life. On the other hand, the airflow sprayed into the interior of the atomization chamber through the air gap can cool the metal powder generated by atomization, so that it can be cooled quickly.

[0061] Preferably, the gas pumped into the wire feeding chamber and the wire storage chamber is an inert gas at low temperature or normal temperature. Further, the air pressure in the wire storage chamber and the wire feeding chamber is greater than the air pressure in the powder making chamber.

[0062] In this way, the cooling gas cools down the parts of the wire feeding device while being sprayed into the atomization chamber at high speed along the jaw gap 3111, preventing metal powder from entering the wire feeding device, thereby extending the service life of the wire feeding device, especially the transmission accuracy and transmission reliability of the screw rod. The cooling gas sprayed into the atomization chamber at high speed will also cool down the metal powder, causing it to cool down quickly.

[0063]

Wire feeding method for plasma atomization powder making

[0064] A wire feeding method for plasma atomization powder making, using the above-mentioned plasma atomization powder making device, defining the extreme position of the second chuck component 32 close to the atomization chamber as the first position, and the extreme position of the second chuck component 32 close to the wire storage chamber as the second position, comprising the following steps:

[0065] Step 1, control the second chuck component 32 to be in the second position, the clamping jaws 311 of the first chuck component 31 and the second chuck component 32 are both in the release position, and pass the wire through the clamping jaw gap 3111 inside the first chuck component 31 and the second chuck component 32;

[0066] Step 2: The second chuck component 32 clamps the wire and moves from the second position to the first position;

[0067] Step 3, the first chuck component 31 clamps the wire, and the second chuck component 32 releases the wire and moves from the first position to the second position;

[0068] Step 4: the first chuck component 31 releases the wire;

[0069] Repeat steps 2-4 to feed the wire into the atomizing chamber.

[0070] Combination Figure 2As shown, the second chuck component 32 clamps the wire from the second position and moves in the direction of the plasma arc. At this time, the first chuck component 31 is released, and the front end of the wire 1a is continuously heated and vaporized into powder by the plasma arc. After the second chuck component 32 reaches the first position (the left extreme position in the figure, the first chuck component 31 clamps the wire, and the second chuck component 32 releases the wire. The second chuck component 32 retreats a distance α and reaches the second position (the right extreme position in the figure, the second chuck component 32 clamps the wire, the first chuck component 31 releases the wire, and the second chuck component 32 drives the wire 1a to be fed in the direction of the plasma arc; this reciprocating process can complete the feeding and powdering of the wire.

[0071] Preferably, in step 2-3, cooling gas is fed into the wire feeding cavity and sprayed into the atomization chamber through the jaw gap 3111 between the jaws 311.

[0072] While the cooling gas cools down the parts of the wire feeding device, it is sprayed into the atomizing chamber at high speed along the jaw gap 3111, preventing metal powder from entering the wire feeding device, thereby extending the service life of the wire feeding device, especially the transmission accuracy and transmission reliability of the screw rod. The cooling gas sprayed into the atomizing chamber at high speed will also cool down the metal powder, causing it to cool down quickly.

[0073] In combination with the above embodiments, the wire feeding device for plasma atomization powder making proposed in the present invention adopts a pneumatic chuck with high positioning accuracy to clamp and feed the wire, and uses two chucks to clamp the wire alternately, one of which is fixed, and the other reciprocates along the feed center line to complete the feeding of the wire. This feeding method can complete the task of slip-free and jam-free feeding of wires of various specifications, while improving the operating stability of the plasma atomization powder making equipment and the quality stability of the powder product, and also improves the efficiency of plasma atomization powder making.

[0074] Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. A person with ordinary knowledge in the technical field to which the present invention belongs may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be determined by the definition of the claims.

Claims

1. A wire feeding device, characterized in that: include: A shell body located on one side of the atomization chamber, wherein a wire storage chamber and a wire feeding chamber are provided in the shell body, wherein the wire storage chamber and the wire feeding chamber are connected via a wire feeding channel (13), and wherein the wire storage chamber is used for placing wire material (1a); A first chuck component (31) is arranged in the wire feeding cavity; A second chuck component (32) is arranged in the wire feeding cavity; The first chuck component (31) and the second chuck component (32) are both capable of clamping or releasing the wire (1a); the first chuck component (31) includes a portion exposed in the atomization chamber; and the second chuck component (32) is configured to be able to reciprocate along the extension line direction of the wire feeding channel (13) to clamp the wire (1a) through the first chuck component (31) and feed the wire toward the atomization chamber.

2. The wire feeding device according to claim 1, characterized in that: The first chuck component (31) and the second chuck component (32) both have a pair of clamping jaws (311), a clamping jaw gap (3111) is formed between the pair of clamping jaws (311), and the wire feeding chamber and the atomization chamber are connected through the clamping jaw gap (3111) for the wire material (1a) to pass through.

3. The wire feeding device according to claim 2, characterized in that: The pair of clamping jaws (311) includes a clamping position and a releasing position. In the clamping position, the clamping jaw gap (3111) is located on both sides of the wire (1a). In the releasing position, the clamping jaw gap (3111) is located on the periphery of the wire (1a).

4. The wire feeding device according to claim 2 or 3, characterized in that: An extension line of the wire feeding channel (13) passes through the jaw gap (3111).

5. The wire feeding device according to claim 1, characterized in that: A guide plate (33) is also provided in the wire feeding cavity, a guide rod (34) is provided between the guide plate (33) and the first chuck component (31), the second chuck component (32) moves along the length direction of the guide rod (34), and a wire guide cone (313) is provided on the inner side of the first chuck component (31), the second chuck component (32) and the guide plate (33), the wire guide cone (313) is provided with a guide cone surface, and the diameter of the guide cone surface gradually decreases along the wire feeding direction to a diameter close to that of the wire.

6. The wire feeding device according to claim 5, characterized in that: The distance between the first chuck component (31) and the guide plate (33) is fixed, and a screw rod (35) is also provided between the first chuck component (31) and the guide plate (33), and the screw rod (35) is rotatably connected relative to the first chuck component (31) and the guide plate (33), and the second chuck component (32) is transmission-connected to the screw rod (35). A driving motor (36) is also provided outside the atomization chamber, and the output end of the driving motor (36) is connected to the screw rod (35) for driving the screw rod (35) to rotate, so that the second chuck component (32) moves between the first chuck component (31) and the guide plate (33).

7. The wire feeding device according to claim 5, characterized in that: The guide plate (33) is provided with a direction corrector (14) on one side facing the wire feeding channel (13), and the direction corrector (14) is used to guide the wire (1a) passing through the wire feeding channel (13) to enter the wire guide cone (313) inside the guide plate (33).

8. The wire feeding device according to claim 7, characterized in that: The direction corrector (14) comprises a correction seat (141) and a correction plate (142), wherein the correction plate (142) is fixed to the guide plate (33), and the correction seat (141) is fixed to a side of the correction plate (142) away from the guide plate (33), wherein a conical hole (143) is provided on the correction plate (142), and a pair of wire pressing wheels (144) are provided on the correction seat (141), wherein a wire passing hole coaxial with the conical hole (143) is formed between the wire pressing wheels (144).

9. The wire feeding device according to claim 4, characterized in that: The air pressure in the wire storage chamber and the wire feeding chamber is greater than the air pressure in the powder making chamber.

10. A plasma atomization powder making device, characterized in that: include: An atomizing chamber, which is provided with a powder making chamber for powder making; A plasma gun (50) connected to a first side cavity wall (101) of the atomization chamber; A wire feeding device as claimed in any one of claims 1 to 9.

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