A hafnium alloy high-temperature oxidation-resistant coating spraying device

Abstract

The utility model relates to the field of hafnium alloy processing technology especially relates to a hafnium alloy high temperature oxidation resistant coating spraying device, including support, bottom platform and spraying bin, the support top fixed mounting has the bottom platform, the bottom platform is fixedly assembled with spraying bin, the top of spraying bin is fixedly connected with the top plate, still including the door that opens and shuts, motor no.

Description

Technical Field

[0001] This utility model relates to the field of hafnium alloy processing technology, and in particular to a coating spraying device for hafnium alloy to resist high-temperature oxidation. Background Technology

[0002] Hafnium alloys, due to their excellent chemical stability, superior thermophysical properties, and outstanding neutron absorption capacity, are ideal substrates for manufacturing high-temperature oxidation-resistant coatings. This material has broad application prospects in aerospace, nuclear industry, and other fields. To enhance the oxidation resistance of hafnium alloy surfaces, a layer of silicide powder is typically deposited on the alloy surface using spraying or dip coating methods, followed by vacuum melting technology to form a dense and robust protective layer. This coating not only effectively resists oxidation corrosion under high-temperature environments but also improves the overall durability and service life of the alloy. Therefore, developing an efficient and safe high-temperature oxidation-resistant coating spraying device for hafnium alloys is of significant practical importance.

[0003] However, the commonly used manual spraying method using handheld spray guns has many shortcomings: First, employees need to be in close contact with the spraying area to operate, which not only poses a potential threat to their health but may also cause occupational diseases during long-term operation; second, manual spraying makes it difficult to ensure the consistency of coating thickness, resulting in inconsistent spraying effects on the workpiece surface and affecting the quality of the final product; in addition, a large amount of paint powder residue is generated during the spraying process. This powder will adhere to the workpiece surface and float throughout the work area, increasing the difficulty of cleaning and the risk of environmental pollution. Therefore, we propose a hafnium alloy high-temperature oxidation resistant coating spraying device to solve the above problems. Utility Model Content

[0004] To overcome the shortcomings of the prior art, a coating spraying device for hafnium alloys resistant to high-temperature oxidation is provided.

[0005] The technical solution of this utility model is as follows: a hafnium alloy high-temperature oxidation resistant coating spraying device, including a support, a base platform, and a spraying chamber. The support is the load-bearing carrier of the spraying device. The base platform is fixedly installed on the top of the support, and the spraying chamber is fixedly assembled on the base platform. A top plate is fixedly connected to the top of the spraying chamber. The side walls of the spraying chamber are made of transparent material and serve as a closed chamber for coating spraying. It also includes opening and closing doors, a motor, a placement platform, a guide frame, a moving block, a spray gun, and a connecting pipe. The spraying chamber is a cylindrical chamber with a workpiece loading and unloading port on one side. Two opening and closing doors are symmetrically hinged at the loading and unloading port of the spraying chamber. A spraying chamber is fixedly installed at the bottom of the base platform. Motor 1 has a placement platform rotatably mounted at the center of the bottom of the spraying chamber. The placement platform is used to place the workpiece to be sprayed. The output shaft of Motor 1 passes through the bottom platform and is connected to the rotation shaft of the placement platform. A guide frame is vertically fixed between the bottom platform and the top plate near the inner wall of the spraying chamber. A moving block is slidably connected to the guide frame. At least two spray guns are fixedly mounted on the moving block. The spray guns face the inside of the spraying chamber. The feed port of the spray gun is connected to a connecting pipe. The connecting pipe extends upward to the top plate. The connecting pipe is used to add hafnium alloy spraying material into the spray gun. The guide frame is equipped with a drive component for driving the moving block to rise and fall.

[0006] As a preferred technical solution of this utility model, the driving component includes a rack, a gear and a second motor. A rack is fixedly connected to the vertical frame of the guide frame, and a gear is rotatably connected to the moving block. The rack and the gear mesh with each other. A second motor is fixedly installed on the guide frame, and the output shaft of the second motor is connected to the rotating shaft of the gear.

[0007] As a preferred embodiment of this utility model, an annular water outlet pipe is fixedly installed at the bottom of the top plate. The water outlet pipe is located at the top of the spraying chamber. A water pump is fixedly installed on the outer wall of the spraying chamber. The water outlet of the water pump is connected to the water outlet pipe. Spray nozzles are evenly opened on the annular pipe body of the water outlet pipe. An annular guide frame is fixedly installed at the bottom of the top plate. The guide frame is inclined towards the inner wall of the spraying chamber and is used to guide the water flow sprayed from the water outlet pipe.

[0008] As a preferred technical solution of this utility model, an annular extension frame is fixedly provided on the top of the base platform. The extension frame is located at the bottom of the spraying chamber. A collection trough is provided on the platform between the spraying chamber and the extension frame. The collection trough is used to guide and collect the water curtain flowing down from the water pipe. A drain pipe is connected to the bottom of the base platform. The drain pipe is connected to the collection trough and is used to drain the water in the collection trough.

[0009] As a preferred embodiment of this utility model, a sealing strip is installed on the inner edge of the door frame of the opening and closing door, and the sealing strip is used to improve the sealing performance of the opening and closing door in the spraying chamber.

[0010] As a preferred embodiment of this utility model, a hanging plate is rotatably connected to the bottom of the top plate. The hanging plate is used to suspend workpieces that are inconvenient to place for spraying. A motor is fixedly installed at the bottom of the top plate, and the output shaft of the motor is connected to the rotating shaft of the hanging plate. Beneficial effects

[0011] 1. This utility model uses a motor to drive the workpiece on the placement table to rotate at a constant speed, while a second motor drives the spray gun to move up and down at a constant speed along the guide frame, ensuring that the hafnium alloy coating can be evenly sprayed onto the surface of the workpiece. With the help of multiple spray guns and the ability to move flexibly along the guide frame, workpieces of different sizes and shapes can obtain high-quality coatings.

[0012] 2. This utility model utilizes a water curtain formed by an annular water outlet pipe and a guide frame to effectively reduce oxygen contact, prevent oxidation of the workpiece surface, and avoid the scattering of hafnium alloy coating, thus protecting the safety of the operating environment.

[0013] 3. This utility model can also suspend workpieces that are inconvenient to place by using the hanging plate on the top plate, and achieve rotation operation in conjunction with the motor, which greatly enhances the adaptability of the spraying device to different types of workpieces. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0015] Figure 2 This is a schematic diagram of the bracket, base, and spraying chamber of this utility model.

[0016] Figure 3 This diagram shows the connection relationships of the guide frame, moving block, and spray gun components of this utility model.

[0017] Figure 4 This is a three-dimensional structural diagram of the rack, gear, and motor components of this utility model.

[0018] Figure 5 This is a cross-sectional view of the water outlet pipe, water pump, and flow guide frame of this utility model.

[0019] The components are as follows: 1-Bracket, 2-Base platform, 3-Spraying chamber, 4-Top plate, 5-Opening door, 6-Motor 1, 7-Placement platform, 8-Guide frame, 9-Moving block, 10-Spray gun, 11-Connecting pipe, 12-Rack, 13-Gear, 14-Motor 2, 15-Water outlet pipe, 16-Water pump, 17-Guide frame, 18-Extension frame, 19-Collection tank, 20-Drainage pipe, 21-Sealing strip, 22-Hanging plate, 23-Motor 3. Detailed Implementation

[0020] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention.

[0021] A hafnium alloy high-temperature oxidation resistant coating spraying device, such as Figures 1-5 As shown, the device includes a support frame 1, a base platform 2, and a spray chamber 3. The support frame 1 serves as the load-bearing carrier for the spraying device. The base platform 2 is fixedly installed on the top of the support frame 1, and the spray chamber 3 is fixedly mounted on the base platform 2. A top plate 4 is fixedly connected to the top of the spray chamber 3. The side walls of the spray chamber 3 are made of transparent material and serve as a closed chamber for coating spraying. The device also includes a door 5, a motor 6, a placement platform 7, a guide frame 8, a moving block 9, a spray gun 10, and a connecting pipe 11. The spray chamber 3 is a cylindrical chamber with a workpiece loading / unloading port on one side. Two doors 5 are symmetrically hinged at the loading / unloading port of the spray chamber 3. The motor 6 is fixedly installed at the bottom of the base platform 2. The placement platform 7 is rotatably installed at the center of the inner bottom of the spray chamber 3. The placement platform 7 is used to place the workpiece to be sprayed. The output shaft of the motor 6 passes through the base platform 2 and is connected to the rotation shaft of the placement platform 7. A guide frame 8 is vertically fixedly connected between the base platform 2 and the top plate 4 near the inner wall of the spray chamber 3. A sliding connection is made to the guide frame 8. The movable block 9 has at least two spray guns 10 fixedly mounted on it, with the spray guns 10 facing the inside of the spraying chamber 3. The inlet of the spray gun 10 is connected to a connecting pipe 11, which extends upward to the top plate 4. The connecting pipe 11 is used to add hafnium alloy coating material into the spray gun 10. The guide frame 8 is equipped with a drive component for driving the movable block 9 to rise and fall. The workpiece to be sprayed is stably placed on the placement platform 7, and the opening and closing door 5 on the spraying chamber 3 is closed. The workpiece on the placement platform 7 is driven to rotate at a constant speed by the motor 6. The drive component drives the spray guns 10 on the movable block 9 to move up and down at a constant speed along the guide frame 8. The spray guns 10 uniformly spray hafnium alloy coating onto the outer wall of the workpiece, thereby improving the spraying efficiency and quality of the workpiece. The entire spraying process is carried out inside the spraying chamber 3. The user can observe the spraying of the workpiece inside through the transparent spraying chamber 3, avoiding the hafnium alloy coating from drifting outside the spraying chamber 3 and improving the safety of the spraying process.

[0022] like Figure 3 and Figure 4 As shown, the driving components include a rack 12, a gear 13, and a second motor 14. The rack 12 is fixedly connected to the vertical frame of the guide frame 8, and the gear 13 is rotatably connected to the moving block 9. The rack 12 and the gear 13 mesh with each other. The second motor 14 is fixedly installed on the guide frame 8. The output shaft of the second motor 14 is connected to the rotating shaft of the gear 13. The second motor 14 drives the gear 13 to rotate and mesh with the rack 12, so that the spray gun 10 on the moving block 9 can move up and down flexibly along the guide frame 8.

[0023] like Figure 5As shown, a ring-shaped water outlet pipe 15 is fixedly installed at the bottom of the top plate 4. The water outlet pipe 15 is located at the top of the spraying chamber 3. A water pump 16 is fixedly installed on the outer wall of the spraying chamber 3. The outlet of the water pump 16 is connected to the water outlet pipe 15. Spray nozzles are evenly opened on the ring-shaped pipe body of the water outlet pipe 15. A ring-shaped guide frame 17 is fixedly installed at the bottom of the top plate 4. The guide frame 17 is inclined towards the inner wall of the spraying chamber 3. The guide frame 17 is used to guide the water flow sprayed from the water outlet pipe 15, so that the water flow is in the form of a water curtain and flows downward along the inner wall of the spraying chamber 3, forming a relatively closed space in the spraying chamber 3, reducing oxygen contact, thereby effectively preventing oxidation of the surface of the workpiece to be sprayed or just sprayed.

[0024] like Figure 1 and Figure 5 As shown, an annular extension frame 18 is fixedly installed on the top of the base platform 2. The extension frame 18 is located at the bottom of the spraying chamber 3. A collection trough 19 is opened on the base platform 2 between the spraying chamber 3 and the extension frame 18. The collection trough 19 is used to guide and collect the water curtain flowing down from the water outlet pipe 15. A drainage pipe 20 is connected to the bottom of the base platform 2. The drainage pipe 20 is connected to the collection trough 19. The drainage pipe 20 is used to drain the water in the collection trough 19.

[0025] like Figure 1 As shown, a sealing strip 21 is installed on the inner edge of the door frame of the opening and closing door 5. The sealing strip 21 is used to improve the sealing performance of the opening and closing door 5 in the spraying chamber 3.

[0026] like Figure 1 and Figure 2 As shown, a hanging plate 22 is rotatably connected to the bottom of the top plate 4. The hanging plate 22 is used to suspend workpieces that are inconvenient to place for spraying. A motor 23 is fixedly installed at the bottom of the top plate 4. The output shaft of the motor 23 is connected to the rotating shaft of the hanging plate 22, so that the spraying device can adapt to the spraying needs of more types of workpieces.

[0027] During operation, first, place the workpiece to be sprayed securely on the rotatable placement platform 7 inside the spraying chamber 3, or suspend it on the rotatable hanging plate 22 below the top plate 4. Then, close the two opening and closing doors 5 at the pick-up and drop-off ports. The door frame sealing strip 21 of the opening and closing doors 5 can ensure the sealing of the spraying chamber 3. Before starting the spraying, turn on the water pump 16 to inject water into the annular water outlet pipe 15 at the bottom of the top plate 4. The water flows out through the spray nozzle and is guided by the inclined annular guide frame 17 to form a water curtain that flows evenly down the inner wall of the transparent spraying chamber 3, effectively isolating oxygen, creating a low-oxygen environment, and preventing oxidation of the hafnium alloy coating or the workpiece surface. Then, start the motor 6 to drive the placement platform 7 (or start the motor 23 to drive the hanging plate 22). The workpiece rotates at a constant speed. At the same time, the motor 14 is started, and the rack 12 fixed on the guide frame 8 is engaged by the gear 13, which drives the moving block 9 and the multiple spray guns 10 installed on it to move up and down at a constant speed along the guide frame 8. Under the combined motion of the workpiece rotation and the spray gun 10 movement, the hafnium alloy coating supplied by the connecting pipe 11 is atomized by the spray gun 10 and evenly sprayed onto the surface of the workpiece. The user can observe the spraying process through the transparent chamber wall. The water curtain flowing down from the water outlet pipe 15 is collected in the area of ​​the annular extension frame 18 at the top of the base platform 2 and flows into the collection tank 19, and is finally discharged by the drain pipe 20. After the spraying is completed, the feeding, the movement mechanism and the water curtain system are stopped in sequence, and the opening and closing door 5 is opened to take out the workpiece.

[0028] Although this disclosure has been described with respect to only a limited number of embodiments, those skilled in the art who benefit from this disclosure will understand that various other embodiments can be devised without departing from the scope of this invention. Therefore, the scope of this invention should be limited only by the appended claims.

Claims

1. A coating spraying device for hafnium alloy to resist high temperature oxidation, comprising a support (1), a base (2) and a spraying chamber (3), wherein the base (2) is fixedly installed on the top of the support (1), the spraying chamber (3) is fixedly assembled on the base (2), and a top plate (4) is fixedly connected to the top of the spraying chamber (3). Its characteristics are, It also includes a hinged door (5), a motor (6), a placement platform (7), a guide frame (8), a moving block (9), a spray gun (10), and a connecting pipe (11). A workpiece loading and unloading port is provided on one side of the spraying chamber (3). Two hinged doors (5) are symmetrically hinged at the loading and unloading port of the spraying chamber (3). The motor (6) is fixedly installed at the bottom of the base platform (2). The placement platform (7) is rotatably installed at the center of the inner bottom of the spraying chamber (3). The output shaft of the motor (6) passes through the base platform (2) and the placement platform (7). The rotating shaft is connected to the bottom platform (2) and top plate (4) near the inner wall of the spraying chamber (3). A guide frame (8) is vertically fixed between them. A moving block (9) is slidably connected to the guide frame (8). At least two spray guns (10) are fixedly mounted on the moving block (9). The feed port of the spray gun (10) is connected to a connecting pipe (11). The connecting pipe (11) is used to add hafnium alloy spraying material into the spray gun (10). The guide frame (8) is provided with a drive component for driving the moving block (9) to rise and fall.

2. The hafnium alloy high-temperature oxidation resistant coating spraying device as described in claim 1, characterized in that, The driving component includes a rack (12), a gear (13) and a second motor (14). The rack (12) is fixedly connected to the vertical frame of the guide frame (8), and the gear (13) is rotatably connected to the moving block (9). The rack (12) and the gear (13) mesh with each other. The second motor (14) is fixedly installed on the guide frame (8), and the output shaft of the second motor (14) is connected to the rotating shaft of the gear (13).

3. The hafnium alloy high-temperature oxidation resistant coating spraying device as described in claim 1, characterized in that, A ring-shaped water outlet pipe (15) is fixedly installed at the bottom of the top plate (4). The water outlet pipe (15) is located at the top of the spraying chamber (3). A water pump (16) is fixedly installed on the outer wall of the spraying chamber (3). The outlet of the water pump (16) is connected to the water outlet pipe (15). Water spray nozzles are evenly opened on the ring-shaped pipe body of the water outlet pipe (15). A ring-shaped flow guide frame (17) is fixedly installed at the bottom of the top plate (4). The flow guide frame (17) is inclined towards the inner wall of the spraying chamber (3). The flow guide frame (17) is used to guide the water flow sprayed from the water outlet pipe (15).

4. The hafnium alloy high-temperature oxidation resistant coating spraying device as described in claim 1, characterized in that, The base (2) is fixedly provided with an annular extension frame (18) at the top. The extension frame (18) is located at the bottom of the spraying chamber (3). The base (2) is provided with a collection trough (19) on the platform between the spraying chamber (3) and the extension frame (18). The collection trough (19) is used to guide and collect the water curtain flowing down from the water outlet pipe (15). The bottom of the base (2) is connected to a drain pipe (20). The drain pipe (20) is connected to the collection trough (19). The drain pipe (20) is used to discharge the water in the collection trough (19).

5. The hafnium alloy high-temperature oxidation resistant coating spraying device as described in claim 1, characterized in that, A sealing strip (21) is installed on the inner edge of the door frame of the opening and closing door (5).

6. The hafnium alloy high-temperature oxidation resistant coating spraying device as described in claim 1, characterized in that, The bottom of the top plate (4) is rotatably connected to a hanging plate (22), which is used to suspend workpieces that are inconvenient to place for spraying. The bottom of the top plate (4) is fixedly installed with a motor three (23), and the output shaft of the motor three (23) is connected to the rotating shaft of the hanging plate (22).

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