Surface laser cladding preheating and slow cooling device

Abstract

The utility model discloses a surface laser cladding preheating and slow cooling device which comprises a constant-temperature box, an operation room is arranged on the constant-temperature box, four fans are arranged in the operation room, the fans are fixedly connected with the constant-temperature box, a dust screen is arranged at the tops of the four fans, the dust screen is fixedly connected with the constant-temperature box, and a heating unit is arranged at the top of the dust screen. The heating unit is fixedly connected with the constant temperature box, air deflectors are arranged at the tops of the two ends of the heating unit, the air deflectors are fixedly connected with the constant temperature box, two air guide grooves are formed in the constant temperature box, the air deflectors are arranged at the input ends of the air guide grooves, and two air collecting pipes are arranged in the operation chamber and fixedly connected with the constant temperature box. An air inlet and a plurality of air outlets are formed in the top end of the air collecting pipe. According to the utility model, thermal stress is effectively reduced, and material deformation and stress concentration caused by temperature difference are reduced, so that the risk of crack generation is reduced, and hot cracks caused by rapid cooling are avoided.

Description

Technical Field

[0001] This utility model relates to the technical field of preheating and slow cooling devices, and in particular to a surface laser cladding preheating and slow cooling device. Background Technology

[0002] Laser cladding is an advanced surface treatment technology that uses a laser beam to melt materials and bond them to the surface of a workpiece, thereby forming a coating with excellent properties. This technology can significantly improve the wear resistance, corrosion resistance, and oxidation resistance of the substrate, while also improving hardness and extending service life.

[0003] Currently, laser cladding typically involves placing the material on the substrate surface and focusing the laser beam onto the substrate surface, causing the substrate and cladding material to partially melt and bond with the substrate surface. However, due to the temperature difference between the material and the substrate, thermal stress can easily occur, posing a risk of cracking. Furthermore, after the cladding process is completed, water cooling or oil cooling is generally used for cooling, which can easily lead to thermal cracking and affect product quality. Therefore, it is necessary to design a surface laser cladding preheating and slow cooling device to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a surface laser cladding preheating and slow cooling device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A surface laser cladding preheating and slow cooling device includes a constant temperature chamber with an operating room. Four fans are fixedly connected to the constant temperature chamber. A common dustproof net is mounted on top of each of the four fans and is also fixedly connected to the constant temperature chamber. A heating unit is mounted on top of the dustproof net and is fixedly connected to the constant temperature chamber. Air guide plates are mounted on the top of both ends of the heating unit and are fixedly connected to the constant temperature chamber. Two air guide slots are formed on the constant temperature chamber. The air guide plates are positioned at the input ends of the air guide slots. Two air collection pipes are installed in the operating room and are fixedly connected to the constant temperature chamber. Each air collection pipe has an air inlet and several air outlets at its top. The air inlet is positioned at the output end of the air guide slot, and the air collection pipes are positioned at the air outlets. An air outlet duct is fixedly connected at the location, and the air outlet duct is inclined upward. By using a heating unit to raise the temperature in the operating chamber to preheat the workpiece and reduce the temperature difference between the workpiece and the material, and by blowing hot air onto the workpiece and gradually lowering the temperature of the hot air to slowly cool the workpiece, the technical means effectively solve the problems mentioned in the background technology, such as direct cladding, which has a certain temperature difference between the material and the substrate, easily generates thermal stress, and has the risk of cracking. Moreover, currently, after the cladding work is completed, water cooling or oil cooling is generally used for cooling, which is prone to thermal cracking and affects product quality. Thus, it effectively reduces thermal stress, reduces material deformation and stress concentration caused by temperature difference, thereby reducing the risk of cracking, avoiding thermal cracking caused by rapid cooling, and helping to maintain the integrity and structural stability of the coating.

[0007] Preferably, the constant temperature chamber has a square groove, and an insulation blanket is placed in the square groove.

[0008] Preferably, the inner wall of the constant temperature chamber is fixedly connected to two trays, the trays are set in the operating chamber, and the top of the trays is fixedly connected to several fixed seats, with rollers rotatably connected to the fixed seats.

[0009] Preferably, the top of several rollers at both ends is provided with the same support grid, and the top of both ends of the support grid is provided with a limiting plate, which is fixedly connected to the constant temperature chamber.

[0010] Preferably, the constant temperature chamber is equipped with a controller, which is electrically connected to the fan and the heating unit via wires.

[0011] Preferably, the constant temperature chamber is equipped with a door, and a round tube is fixedly connected to the top of the constant temperature chamber. The round tube communicates with the operating chamber, and a sealing cover is provided on the round tube.

[0012] Preferably, temperature sensors are installed on both the constant temperature chamber and the chamber door, and the temperature sensors are electrically connected to the controller via wires.

[0013] The beneficial effects of this utility model are as follows:

[0014] By employing a heating unit to preheat the workpiece by raising the temperature inside the operating chamber, thereby reducing the temperature difference between the workpiece and the material, and by blowing hot air onto the workpiece and gradually lowering the temperature of the hot air to slowly cool it down, the technical methods proposed in the background technology effectively solve the problems of direct cladding, where a certain temperature difference exists between the material and the substrate, easily generating thermal stress and posing a risk of cracking. Furthermore, currently, after the cladding work is completed, water cooling or oil cooling is generally used for cooling, which easily leads to thermal cracking and affects product quality. This effectively reduces thermal stress, reduces material deformation and stress concentration caused by temperature differences, thereby reducing the risk of cracking and avoiding thermal cracking caused by rapid cooling, which helps maintain the integrity and structural stability of the coating. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of a surface laser cladding preheating and slow cooling device proposed in this utility model;

[0016] Figure 2 This is a partial structural schematic diagram of a surface laser cladding preheating and slow cooling device proposed in this utility model;

[0017] Figure 3 This is a partial cross-sectional structural diagram of a surface laser cladding preheating and slow cooling device proposed in this utility model;

[0018] Figure 4 This is a partial unfolded structural diagram of a surface laser cladding preheating and slow cooling device proposed in this utility model;

[0019] Figure 5 This is a schematic diagram of the unfolded structure of the fixed seat of the surface laser cladding preheating and slow cooling device proposed in this utility model.

[0020] In the diagram: 1. Constant temperature chamber; 101. Square slot; 2. Control room; 3. Fan; 4. Dustproof net; 5. Heating unit; 6. Air guide plate; 7. Air collection duct; 701. Air inlet; 702. Air outlet; 8. Air outlet duct; 9. Air guide duct; 10. Insulation blanket; 11. Tray; 12. Fixing base; 13. Roller; 14. Material support grid; 15. Limiting plate; 16. Controller; 17. Chamber door; 18. Temperature sensor; 19. Round tube; 20. Sealing cover. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Reference Figure 1-5 A surface laser cladding preheating and slow cooling device includes a constant temperature chamber 1, an operating chamber 2 on the constant temperature chamber 1, four fans 3 inside the operating chamber 2, the fans 3 being fixedly connected to the constant temperature chamber 1, a common dustproof net 4 on the top of the four fans 3, the dustproof net 4 being fixedly connected to the constant temperature chamber 1, a heating unit 5 on the top of the dustproof net 4, the heating unit 5 being fixedly connected to the constant temperature chamber 1, air guide plates 6 on the top of both ends of the heating unit 5, the air guide plates 6 being fixedly connected to the constant temperature chamber 1, two air guide slots 9 on the constant temperature chamber 1, the air guide plates 6 being located at the input end of the air guide slots 9, two air collection pipes 7 inside the operating chamber 2, the air collection pipes 7 being fixedly connected to the constant temperature chamber 1, the top of the air collection pipes 7 being respectively provided with an air inlet 701 and several air outlets 702, the air inlet 701 being located at the output end of the air guide slots 9, and the air collection pipes 7 being located at the air outlets 702. An air outlet pipe 8 is fixedly connected at position 02. The air outlet pipe 8 is inclined upward. By using a heating unit to raise the temperature in the operating chamber to preheat the workpiece and reduce the temperature difference between the workpiece and the material, and by blowing hot air onto the workpiece and gradually lowering the temperature of the hot air to slowly cool the workpiece, the technical means of directly performing cladding, where there is a certain temperature difference between the material and the substrate, are prone to generating thermal stress and have the risk of cracking are effectively solved. In addition, currently, after the cladding work is completed, water cooling or oil cooling is generally used for cooling, which is prone to thermal cracking and affects product quality. Thus, it effectively reduces thermal stress, reduces material deformation and stress concentration caused by temperature difference, thereby reducing the risk of cracking and avoiding thermal cracking caused by rapid cooling. This helps to maintain the integrity and structural stability of the coating.

[0023] In this utility model, a square groove 101 is provided on the constant temperature box 1, and a heat insulation blanket 10 is provided in the square groove 101. When preheating, the heat insulation blanket 10 is inserted into the square groove 101 to ensure that the temperature in the operating chamber 2 is not easily lost.

[0024] In this utility model, two trays 11 are fixedly connected to the inner wall of the constant temperature box 1. The trays 11 are set in the operating chamber 2. Several fixed seats 12 are fixedly connected to the top of the trays 11. Rollers 13 are rotatably connected to the fixed seats 12.

[0025] In this utility model, the top of several rollers 13 at both ends is provided with the same support grid 14, and the top of both ends of the support grid 14 is provided with a limiting plate 15. The limiting plate 15 is fixedly connected to the constant temperature box 1. By setting the rollers 13, it is easy to move the support grid 14.

[0026] In this invention, a controller 16 is provided on the constant temperature chamber 1. The controller 16 is electrically connected to the fan 3 and the heating unit 5 through wires. The heating unit 5 generates high temperature to heat the air blown out by the fan 3. By adjusting the power of the heating unit 5, the temperature of the heated air is changed, and the workpiece that has been laser clad is slowly cooled down.

[0027] In this utility model, a door 17 is installed on the constant temperature chamber 1, and a round tube 19 is fixedly connected to the top of the constant temperature chamber 1. The round tube 19 is connected to the operating chamber 2, and a sealing cover 20 is provided on the round tube 19.

[0028] In this invention, temperature sensors 18 are provided on both the constant temperature chamber 1 and the chamber door 17, and the temperature sensors 18 are electrically connected to the controller 16 via wires.

[0029] Working principle: During use, place the workpiece on the support grid 14, push the support grid 14 to move the workpiece into the operating chamber 2, insert the insulation blanket 10 into the square groove 101, close the door 17, and place the sealing cover 20 onto the round tube 19. An external power supply is used. The controller 16 starts the heating unit 5 to raise the temperature inside the operating chamber 2, preheating the workpiece. The temperature sensor 18 monitors the workpiece temperature, and the collected data is fed back to the controller 16 and displayed on its screen. After preheating, open the door 17, pull out the support grid 14, and remove the workpiece. When the workpiece needs cooling after laser cladding, place the workpiece on the support grid 14, push the operating chamber 2, and move the insulation blanket 10 from the square groove 101. Remove the workpiece, start the heating unit 5 to raise its temperature, start the fan 3, and remove the sealing cover 20. The air blown out by the fan 3 will be heated by the heating unit 5 and then blown onto the workpiece. The temperature of the workpiece is monitored in real time by the temperature sensor 18. Gradually reduce the power of the heating unit 5 to lower its temperature. The temperature of the air blown out by the fan 3 will also gradually decrease, slowly cooling the workpiece to prevent cracks caused by excessive cooling. Part of the air blown out by the fan 3 will enter the air guide plate 6, then the air guide groove 9, and then be injected into the air collection pipe 7 through the air guide groove 9. The air collection pipe 7 will then be injected into the air outlet pipe 8, and blown onto the workpiece through the air outlet pipe 8 to cool it down. The air will then be discharged through the round pipe 19. After the slow cooling process is completed, the workpiece can be removed.

[0030] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A surface laser cladding preheating and slow cooling device comprising a thermostat (1), characterized in that, An operating room (2) is provided on the constant temperature chamber (1). Four fans (3) are installed inside the operating room (2). The fans (3) are fixedly connected to the constant temperature chamber (1). A dustproof net (4) is installed on the top of each of the four fans (3). The dustproof net (4) is fixedly connected to the constant temperature chamber (1). A heating unit (5) is installed on the top of the dustproof net (4). The heating unit (5) is fixedly connected to the constant temperature chamber (1). Air guide plates (6) are installed on the top of both ends of the heating unit (5). The air guide plates (6) are fixedly connected to the constant temperature chamber (1). Two air guide slots (9) are provided on the box (1). The air guide plate (6) is set at the input end of the air guide slot (9). Two air collection pipes (7) are provided in the operating room (2). The air collection pipes (7) are fixedly connected to the constant temperature box (1). The top of the air collection pipes (7) is respectively provided with an air inlet (701) and several air outlets (702). The air inlet (701) is set at the output end of the air guide slot (9). An air outlet pipe (8) is fixedly connected to the air collection pipe (7) at the air outlet (702). The air outlet pipe (8) is inclined upward.

2. The surface laser cladding preheating and slow cooling device according to claim 1, characterized in that, The constant temperature chamber (1) has a square groove (101) and a heat insulation blanket (10) is placed in the square groove (101).

3. The surface laser cladding preheating and slow cooling device according to claim 2, characterized in that, The inner wall of the constant temperature chamber (1) is fixedly connected to two trays (11). The trays (11) are set in the operating room (2). Several fixed seats (12) are fixedly connected to the top of the trays (11). Rollers (13) are rotatably connected to the fixed seats (12).

4. The surface laser cladding preheating and slow cooling device according to claim 3, characterized in that, The top of several rollers (13) at both ends is provided with the same support grid (14), and the top of both ends of the support grid (14) is provided with a limiting plate (15), which is fixedly connected to the constant temperature box (1).

5. The surface laser cladding preheating and slow cooling device according to claim 4, characterized in that, The constant temperature chamber (1) is equipped with a controller (16), which is electrically connected to the fan (3) and the heating unit (5) via wires.

6. The surface laser cladding preheating and slow cooling device according to claim 5, characterized in that, The constant temperature chamber (1) is equipped with a door (17), and a round tube (19) is fixedly connected to the top of the constant temperature chamber (1). The round tube (19) is connected to the operating room (2), and a sealing cover (20) is provided on the round tube (19).

7. The surface laser cladding preheating and slow cooling device according to claim 6, characterized in that, Temperature sensors (18) are installed on both the constant temperature chamber (1) and the chamber door (17), and the temperature sensors (18) are electrically connected to the controller (16) via wires.

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