Alloy plasma spraying equipment and spraying method

Abstract

The invention relates to the field of alloy spraying processing, in particular to alloy plasma spraying equipment and a spraying method. The alloy plasma spraying equipment comprises a plasma spraying main machine, a spraying gun is arranged below the plasma spraying main machine, two supporting rods are arranged on the spraying gun, a wire feeding mechanism is arranged on each supporting rod, a metal thin wire is arranged in each wire feeding mechanism, a cooling sleeve is arranged outside each metal thin wire, and the cooling sleeves are arranged in the plasma spraying main machine. Each cooling sleeve is fixedly connected with two liquid pipes, a cold row is arranged between every two corresponding liquid pipes, and each cold row is fixedly connected with the corresponding cooling sleeve through a connecting plate. The spraying method comprises the following steps that S1, an object needing to be sprayed is placed on the support; s2, the filament-shaped alloy material is wound on a reel; s3, adjusting the length of a second telescopic rod; and S4, the plasma spraying main machine is driven to move through the electric control platform. According to the device, molten materials can be cooled, and the situation that the spraying effect is affected due to uneven wire feeding caused by filament softening is avoided.

Description

Technical Field

[0001] This invention relates to the field of alloy spraying, and more specifically to an alloy plasma spraying equipment and spraying method. Background Technology

[0002] In the field of alloy plasma spraying, when spraying alloys containing metallic or non-metallic guides or filaments, a high-temperature plasma arc melts the metallic or non-metallic alloy to form droplets, which are then sprayed out through a spray gun to adhere to the workpiece surface. However, due to the different melting points of metallic and non-metallic filament alloys, during the melting process of the filament at the beginning, the filament at the end is prone to softening due to the high temperature, affecting further processing and use.

[0003] Therefore, there is an urgent need to design a spraying device that can cool the filaments in order to solve the above-mentioned technical pain points. Summary of the Invention

[0004] This invention provides an alloy plasma spraying equipment and spraying method, the purpose of which is to cool the molten material and avoid the softening of the filaments, which would lead to uneven filament feeding and affect the spraying effect.

[0005] The above objectives are achieved through the following technical solutions:

[0006] An alloy plasma spraying device includes a plasma spraying host, a spray gun located below the plasma spraying host, two support rods on the spray gun, a wire feeding mechanism on each support rod, a metal wire inside each wire feeding mechanism, a cooling sleeve outside each metal wire, two liquid pipes fixedly connected to each cooling sleeve, a cooling radiator between the two corresponding liquid pipes, and each cooling radiator fixedly connected to the corresponding cooling sleeve via a connecting plate.

[0007] The plasma spraying host and the spray gun are slidably connected. A second telescopic rod is fixedly connected to the plasma spraying host, and the moving end of the second telescopic rod is fixedly connected to the spray gun.

[0008] The spraying method used in alloy plasma spraying equipment includes the following steps:

[0009] S1: Place the item to be painted on the stand;

[0010] S2: Wind the thin alloy material into a spool;

[0011] S3: Adjust the length of the second telescopic rod;

[0012] S4: The plasma spraying host is moved by the electronic control platform.

[0013] The beneficial effects of the alloy plasma spraying equipment and spraying method of the present invention are as follows:

[0014] The cooling sleeve cools the filament outside the spray gun, preventing heat from being conducted to the later stages during the filament melting process inside the gun, which could cause the filament to soften and deform, affecting the uniformity of the spray and resulting in uneven spraying. The spray gun moves up and down, adjusting the distance between the filament and the plasma arc to achieve the desired melting effect for filaments with different melting points. The cooling sleeve moves up and down with the gun, ensuring that the cooling position for the filament remains fixed during longitudinal spraying, preventing any impact on the spraying effect. Attached Figure Description

[0015] Figure 1 A flowchart of an alloy plasma spraying method;

[0016] Figure 2 This is a schematic diagram of the overall structure of an alloy plasma spraying equipment.

[0017] Figure 3 This is a structural diagram of the movable support section;

[0018] Figure 4 This is a schematic diagram of the plasma spraying main unit.

[0019] Figure 5 This is a schematic diagram of the structure of the scroll seat part;

[0020] Figure 6 This is a structural diagram of the spray gun section;

[0021] Figure 7 This is a schematic diagram of the first telescopic rod section;

[0022] Figure 8 This is a schematic diagram of the cooling sleeve section;

[0023] Figure 9 This is a schematic diagram of the wheel groove and wire feeding wheel.

[0024] In the diagram: bracket 11; horizontal rail 101; vertical rail 102; movable bracket 103; first telescopic rod 104; fixed plate 105;

[0025] Plasma spraying host 12; spray gun 201; second telescopic rod 202; support rod 203; guide wheel 204;

[0026] Wheel groove 13; wire feeding wheel 301; clamping plate 302; tension spring 303;

[0027] 14 reel seat; 401 reel bracket; 402 reel; 403 wire stop plate; 404 positioning clamp;

[0028] Cooling sleeve 15; liquid pipe 501; radiator 502; connecting plate 503. Detailed Implementation

[0029] In the description of this invention, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0030] The invention will now be further described with reference to the accompanying drawings.

[0031] like Figures 2 to 6 To address the problem of metal wires softening due to high temperatures during transport.

[0032] Below the plasma spraying host 12 is a spray gun 201. The spray gun 201 is equipped with two support rods 203. Each support rod 203 is equipped with a wire feeding mechanism. Each wire feeding mechanism contains a metal wire. Each metal wire is equipped with a cooling sleeve 15. Each cooling sleeve 15 is fixedly connected to two liquid pipes 501. A cold radiator 502 is arranged between the two corresponding liquid pipes 501. Each cold radiator 502 is fixedly connected to the corresponding cooling sleeve 15 through a connecting plate 503.

[0033] When the equipment is working, a high-temperature plasma arc is generated inside the plasma spraying host 12. The alloy to be sprayed is composed of metal or non-metal filaments. The filaments are fed into the spray gun 201 by the filament feeding mechanism. At this time, the arc melts the filaments, thereby achieving the purpose of spraying the workpiece. When the high-temperature plasma arc melts the filaments, the material of the filaments is different due to different spraying requirements. At this time, when the high-temperature plasma arc melts the filaments, the filaments outside the spray gun 201 will soften due to the high temperature. When the filaments are fed into the spray gun 201, it will cause uneven feeding of the filaments, thus affecting the uniformity of the spraying of the melted alloy. In this invention, the cooling sleeve 15 is located outside the filament, and a liquid pump is installed inside the radiator 502. Coolant is installed in both the radiator 502 and the liquid pipe 501. The liquid pump delivers the coolant from one liquid pipe 501 to the cooling sleeve 15, and then it flows back from the other liquid pipe 501. A fan is installed at the radiator 502 to cool the coolant. The low-temperature coolant then flows into the cooling sleeve 15, which cools the filament inside the cooling sleeve 15 to prevent it from softening due to excessive temperature. The connecting plate 503 ensures that the cooling sleeve 15 and the radiator 502 move synchronously, thereby meeting the cooling requirements of metal or non-metal filaments of different materials.

[0034] like Figure 4 and Figure 6 To solve the problem of melting filaments made of different materials.

[0035] The plasma spraying host 12 and the spray gun 201 are slidably connected. A second telescopic rod 202 is fixedly connected to the plasma spraying host 12, and the moving end of the second telescopic rod 202 is fixedly connected to the spray gun 201.

[0036] The lower end of the plasma spraying host 12 generates a high-temperature plasma arc. Fine wires are inserted into the spray gun 201 from both sides. The relative distance between the plasma spraying host 12 and the spray gun 201 is adjusted by the second telescopic rod 202, thereby controlling the distance between the plasma arc and the fine wires to meet the requirements of melting and spraying different fine wires.

[0037] like Figure 6 and Figure 9 To solve the problem of silk thread transportation.

[0038] A guide wheel 204 is rotatably connected to the support rod 203. The guide wheel 204 is in contact with the metal wire. Each wire feeding mechanism includes a wheel groove 13. Each wheel groove 13 is provided with two wire feeding wheels 301. The metal wire is located between the two corresponding wire feeding wheels 301. Each wire feeding wheel 301 is provided with an electric control motor.

[0039] The drive motor operates, thereby rotating the corresponding wire feeding wheel 301. The two corresponding wire feeding wheels 301 rotate relative to each other, thereby driving the filament between the two wire feeding wheels 301 to be fed into the spray gun 201. The guide wheel 204 can support and guide the filament, reduce friction with the support rod 203, and ensure the stability of the filament being fed into the spray gun 201. The wire feeding wheel 301 can slide in the wheel groove 13, thereby meeting the feeding requirements of metal or non-metal filaments of different diameters.

[0040] like Figure 9 To address the stability issue in the wire feeding process.

[0041] Each clamping plate 301 is rotatably connected to the corresponding wire feeding wheel 301, and the tension spring 303 is fixed between the two corresponding clamping plates 302.

[0042] The tension spring 303 pulls the two clamping plates 302 closer together, thereby driving the corresponding wire feeding wheel 301 to clamp the wire between them, increasing the friction between the wire feeding wheel 301 and the wire, ensuring that the metal or non-metal wire can be fed into the spray gun 201 at a uniform speed, so that the plasma arc can stably melt the wire, making the alloy spraying more uniform, thus ensuring the spraying effect.

[0043] like Figure 3 and Figure 7 To solve the problem of adjusting the distance between the spray gun 201 and the workpiece.

[0044] A movable bracket 103 is slidably connected to the plasma spraying host 12. A first telescopic rod 104 is fixedly connected to the movable bracket 103. The moving end of the first telescopic rod 104 is fixedly connected to the plasma spraying host 12. A fixing plate 105 is fixedly connected to the moving end of the first telescopic rod 104. The fixing plate 105 is fixedly connected to two cold radiators 502.

[0045] First, adjust the second telescopic rod 202 according to the filament material. Then, control the extension and retraction of the first telescopic rod 104, which drives the plasma spraying host 12 and the spray gun 201 to move relative to the movable support 103, thereby adjusting the relative distance between the lower end of the spray gun 201 and the workpiece. This allows for adjustment of the spraying distance based on the workpiece and the filament material, ensuring the spraying effect. When the first telescopic rod 104 moves, it drives the fixed plate 105 to move. At this time, the two radiators 502 and the cooling sleeve 15 move synchronously, thereby ensuring that the distance between the cooling sleeve 15 and the support rod 203 remains constant, ensuring the cooling effect on the filament.

[0046] like Figure 4 and Figure 5 To solve the problem of filament entanglement.

[0047] Two roller seats 14 are rotatably connected to the movable bracket 103. Each roller seat 14 is provided with a roller bracket 401. Each roller bracket 401 is rotatably connected to a roller 402. The metal wire is wound on the corresponding roller 402.

[0048] Depending on the different alloy spraying requirements, metal or non-metal filaments are wound onto the spool 402. The spool 402 and the spool support 401 are interference-fitted to prevent the spool 402 from rotating too fast and causing the filaments to become entangled. The filaments pass through the spool seat 14 downwards. The diameter of the portion of the spool seat 14 through which the filaments pass is relatively wide to ensure the insertion of the cooling sleeve 15. This allows the cooling sleeve 15 to be inserted to cool the filaments when spraying is performed at a higher horizontal position.

[0049] like Figure 5 To prevent the filaments from falling off the reel 402 during processing.

[0050] Each wire baffle 403 can be detachably connected to both sides of the reel 402, and each reel bracket 401 is fixedly connected to a positioning clamp 404, with the metal wire located in the corresponding positioning clamp 404.

[0051] During the spraying process, the filaments wound on the spool 402 are prone to fall off from both ends of the spool 402. The wire baffles 403 on both sides can prevent them from winding around the shaft of the spool 402 from both sides. The positioning clamp 404 is located directly above the through hole on the spool seat 14, so that the filaments that have fallen off the spool 402 pass vertically downward through the spool seat 14, avoiding friction between them and the spool seat 14, which would cause damage to the filaments.

[0052] like Figure 2 To solve the problem of continuous processing.

[0053] A horizontal rail 101 is provided on the bracket 11, and a vertical rail 102 is slidably connected to the horizontal rail 101. The movable bracket 103 is slidably connected to the vertical rail 102.

[0054] By sliding the longitudinal rail 102 on the transverse rail 101 and the movable bracket 103 on the longitudinal rail 102, the spraying work in the front-back and left-right directions is controlled during spraying. At the same time, in conjunction with the retraction of the first telescopic rod 104, the spraying work in the vertical direction is realized, thereby achieving the purpose of continuous processing of irregular planes.

[0055] like Figure 2 To solve the problem of controlling the movement of the spray gun 201.

[0056] An electric control platform is installed on the bracket 11. The horizontal rail 101 and the vertical rail 102 are driven by a first lead screw, and the movable bracket 103 and the vertical rail 102 are driven by a second lead screw. Both the first lead screw and the second lead screw are controlled by the electric control platform.

[0057] The horizontal rail 101, movable support 103, and plasma spraying host 12 are moved in coordination by the electronic control platform. The horizontal rail 101 and vertical rail 102 are provided with sliding grooves, and locking knobs are provided in the sliding grooves to limit the sliding position. A workpiece fixing device is provided below the support 11. After the workpiece is fixed, the plasma spraying host 12 is driven to move by the electronic control platform. The movement path is recorded by the locking knobs used for limiting, thereby programming the electronic control platform.

[0058] like Figure 1 A plasma spraying method used in an alloy plasma spraying equipment includes the following steps:

[0059] S1: Place the item to be sprayed on the bracket 11, and then adjust the locking knob according to the size of the item;

[0060] S2: According to the spraying requirements, the required filamentous alloy material is wound onto the reel 402;

[0061] S3: Adjust the length of the second telescopic rod 202 according to the filament material to make the distance between the filament and the plasma arc appropriate;

[0062] S4: After programming the electronic control platform, the plasma spraying host 12 is moved through the electronic control platform.

Claims

1. An alloy plasma spraying equipment, characterized in that: The system includes a plasma spraying host (12), a spray gun (201) is provided below the plasma spraying host (12), two support rods (203) are provided on the spray gun (201), each support rod (203) is provided with a wire feeding mechanism, each wire feeding mechanism is provided with a metal wire, each metal wire is provided with a cooling sleeve (15), each cooling sleeve (15) is fixedly connected with two liquid pipes (501), a cold plate (502) is provided between the two corresponding liquid pipes (501), and each cold plate (502) is fixedly connected to the corresponding cooling sleeve (15) through a connecting plate (503).

2. The alloy plasma spraying equipment according to claim 1, characterized in that: The plasma spraying host (12) and the spray gun (201) are slidably connected. A second telescopic rod (202) is fixedly connected to the plasma spraying host (12), and the moving end of the second telescopic rod (202) is fixedly connected to the spray gun (201).

3. The alloy plasma spraying equipment according to claim 1, characterized in that: A guide wheel (204) is rotatably connected to the support rod (203). The guide wheel (204) is in contact with the metal wire. Each wire feeding mechanism includes a wheel groove (13). Each wheel groove (13) is provided with two wire feeding wheels (301). The metal wire is located between the two corresponding wire feeding wheels (301). Each wire feeding wheel (301) is provided with an electric motor.

4. The alloy plasma spraying equipment according to claim 3, characterized in that: Each wire feeding wheel (301) is provided with a clamping plate (302), and a tension spring (303) is fixed between two corresponding clamping plates (302).

5. The alloy plasma spraying equipment according to claim 1, characterized in that: A movable bracket (103) is slidably connected to the plasma spraying host (12). A first telescopic rod (104) is fixedly connected to the movable bracket (103). The moving end of the first telescopic rod (104) is fixedly connected to the plasma spraying host (12). A fixed plate (105) is fixedly connected to the moving end of the first telescopic rod (104). The fixed plate (105) is fixedly connected to two cold radiators (502).

6. The alloy plasma spraying equipment according to claim 5, characterized in that: Two spool seats (14) are rotatably connected to the movable bracket (103). Each spool seat (14) is provided with a spool bracket (401). Each spool bracket (401) is rotatably connected with a spool (402). The metal wire is wound on the corresponding spool (402).

7. The alloy plasma spraying equipment according to claim 6, characterized in that: Each spool (402) has a wire baffle (403) on both sides, and each spool bracket (401) has a positioning clamp (404) fixedly connected to it, with the metal wire located in the corresponding positioning clamp (404).

8. The alloy plasma spraying equipment according to claim 5, characterized in that: Includes a bracket (11), on which a horizontal rail (101) is provided, and a vertical rail (102) is slidably connected to the horizontal rail (101), and a movable bracket (103) is slidably connected to the vertical rail (102).

9. The alloy plasma spraying equipment according to claim 8, characterized in that: An electric control platform is provided on the bracket (11). The horizontal rail (101) and the vertical rail (102) are driven by a first lead screw, and the movable bracket (103) and the vertical rail (102) are driven by a second lead screw. Both the first lead screw and the second lead screw are controlled by the electric control platform.

10. The spraying method used in the alloy plasma spraying equipment according to claim 9, characterized in that, The method includes the following steps: S1: Place the item to be painted on the bracket (11); S2: Wind the thin alloy material into a spool (402); S3: Adjust the length of the second telescopic rod (202); S4: Drive the plasma spraying host (12) to move via the electronic control platform.

Images