Friction welding heat treatment apparatus

Abstract

The application discloses a friction welding heat treatment device, and relates to the field of welding.The device comprises a working platform, a friction welding mechanism is arranged in the inner cavity of the working platform, and the friction welding mechanism can be used for friction welding of two metal rod bodies; the heating element is used for heating the welding position at the beginning of welding, so that the welding position is heated to a certain temperature, the heat conduction of the two rod bodies is more sufficient, and the welding is more firm; after the welding is completed, the hollow outer plate, the inner plate and the flexible high-temperature-resistant material on the clamping rod are used for sealing and wrapping the welding position, the heating element continues to heat and anneals the welding position; since the heating element is preheated, the temperature is very high at this time, the temperature of the welding position of the rod body is not cooled but directly annealed at the moment when the welding is completed, the microstructure and the mechanical properties of the welding position are ensured, and the influence of the annealing heat treatment after the welding position is naturally cooled is avoided.

Description

Technical Field

[0001] This invention relates to the field of welding, specifically to a friction welding heat treatment apparatus. Background Technology

[0002] Friction welding is a solid-state welding method. Friction welding machines use frictional heat as energy. Through mechanical frictional motion and the application of axial pressure, heat is generated on the frictional surfaces of two weldments, thereby heating the frictional surfaces of the two weldments to plastic deformation. Then, the plastic deformation is used to firmly connect two weldments of the same or different materials.

[0003] Current friction welding devices simply weld the material and then anneal it using heating equipment. This causes the high temperature generated during welding to cool down before annealing, which leads to a decrease in the mechanical properties of the weld and wastes the heat generated by friction. Heating the rod again for annealing also wastes heat, and the existing annealing process cannot guarantee that the welding area is heated evenly in all directions, which also affects the mechanical properties. Summary of the Invention

[0004] The purpose of this invention is to provide a friction welding heat treatment apparatus to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A working platform is included, with a friction welding mechanism installed within its inner cavity. This friction welding mechanism can perform friction welding on two metal rods. A telescopic rod is fixedly installed on the top of the working platform, and a T-shaped rod is fixedly installed on the output end face of the telescopic rod. A middle plate is fixedly installed on the other end face of the T-shaped rod. Hollow outer plates are rotatably mounted on both the front and rear ends of the middle plate via a rotating shaft. The hollow outer plates are cavities. Inner plates are slidably installed within the cavities of the two hollow outer plates. Springs are fixedly installed between the inner plates and the inner wall surfaces of the hollow outer plates. Vertical plates are provided on opposite surfaces via a transmission mechanism. The two ends of the vertical plates are hinged and rotatably mounted with racks. Heating elements are evenly fixed on the two racks. The heating elements are used to heat and raise the temperature. They can be heating diodes. Each heating element can rotate synchronously relative to the vertical plate connected to it via the rack. Clamping rods are rotatably provided on the left and right sides of the middle plate, the hollow outer plate, and the inner plate via a base. The clamping rods are connected to the base via a return spring, so that the 22 clamping rods can have a force to pull them together. Flexible high-temperature resistant material is laid on the clamping rods on the same side.

[0006] Preferably, the transmission mechanism includes a hollow transmission rod fixedly mounted on the hollow outer plate. One end of the hollow transmission rod is fixedly connected to the vertical plate, and the other end is fixedly connected to the hollow outer plate. The interior of the hollow transmission rod communicates with the interior of the hollow outer plate. A gear is rotatably mounted on the inner wall of the hollow transmission rod, and the gear meshes with the inner plate. A sliding rod is slidably mounted on the inner wall of the hollow transmission rod. The sliding rod and the gear are connected by a linkage rod. The linkage rod is hinged to the sliding rod and the gear respectively. The sliding rod is hinged to the two placement frames respectively by splicing rods.

[0007] Preferably, the T-shaped rod and the two hollow outer plates are respectively hinged by telescopic elements, which can be hydraulic rods, and the telescopic elements can drive the hollow outer plates to rotate around the middle plate.

[0008] Preferably, the friction welding mechanism includes an electric telescopic rod fixedly installed on the inner wall of the working platform, a clamping device fixedly installed at the output end of the electric telescopic rod, an electric guide rail provided on the bottom wall of the inner cavity of the working platform, a clamping plate slidably installed on the electric guide rail, and a power element fixedly installed on the side wall of the clamping plate facing the electric telescopic rod. The power element can be a motor, and the clamping device is also fixedly installed at the output end of the power element. The center lines of the clamping device on the electric telescopic rod and the clamping device on the power element are kept consistent, so that the two can maintain the center line consistency during relative movement and not deviate.

[0009] Preferably, the clamping device includes a hollow disc, on which a movable arc plate is evenly slidably disposed on the inner wall of the hollow disc, and a threaded hole corresponding to the movable arc plate is provided through the wall of the hollow disc, with a bolt provided in each threaded hole, and the bolt is rotatably connected to the movable arc plate corresponding to it.

[0010] Preferably, the surface of the moving arc plate is provided with a friction pad.

[0011] Preferably, the clamping plate is provided with a warning light on the top, which is used to indicate whether the machine is in operation.

[0012] Preferably, reflective materials, such as gold, silver, nickel, aluminum foil, or metal-plated polyester or polyimide films, are laid on the walls of the intermediate plate, the hollow outer plate, and the inner plate.

[0013] In summary, the beneficial effects of this invention are:

[0014] 1. This invention heats the weld joint at the beginning of welding using a heating element, which increases the temperature of the weld joint, making the heat conduction of the two rods more complete and the weld stronger. After welding, the weld joint is sealed and wrapped with flexible high-temperature resistant material on the hollow outer plate, inner plate, and clamping rod. The heating element continues to heat the weld joint for annealing. Since the heating element has been preheated, the temperature is very high at this time. This process ensures that the temperature of the weld joint does not cool down, but the annealing treatment is carried out directly at the moment the welding is completed, which ensures the microstructure and mechanical properties of the weld joint and avoids the influence of annealing heat treatment after the weld joint has cooled naturally.

[0015] 2. The present invention allows for adjustment of the distance between the heating element and the rod body by rotating the placement frame. Regardless of the size of the rod body, all heating elements will maintain the same distance from the rod body and will be evenly distributed around the rod body, ensuring uniform heating around the rod body. This ensures that the welding joint of the rod body receives the same temperature, improves the annealing effect, and prevents uneven temperature distribution, which would affect the performance of the rod body. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall main structure of a friction welding heat treatment device according to the present invention;

[0018] Figure 2 For the present invention Figure 1 Schematic diagram of the structure at point AA;

[0019] Figure 3 For the present invention Figure 1 Enlarged schematic diagram of the structure at point B;

[0020] Figure 4 For the present invention Figure 1 Schematic diagram of the structure at the CC position;

[0021] Figure 5 For the present invention Figure 4 Enlarged schematic diagram of the structure at point D.

[0022] The markings in the attached diagram are described as follows: 10. Working platform; 11. Electric telescopic rod; 12. Clamping device; 13. Electric guide rail; 14. Clamping plate; 15. Power element; 16. Warning light; 17. Telescopic rod; 18. T-shaped rod; 19. Middle plate; 20. Hollow outer plate; 21. Inner plate; 22. Clamping rod; 23. Placement rack; 24. Heating element; 25. Hollow disc; 26. Moving arc plate; 27. Bolt; 28. Telescopic element; 29. ​​Hollow transmission rod; 30. Gear; 31. Linkage rod; 32. Sliding rod; 33. Splicing rod; 34. Spring; 35. Transmission mechanism; 36. Vertical plate; 37. Friction welding mechanism; 38. Base. Detailed Implementation

[0023] All features disclosed in this specification, or all steps in all disclosed methods or processes, may be combined in any way, except for mutually exclusive features and / or steps.

[0024] Any feature disclosed in this specification (including any appended claims, abstract, and drawings) may be replaced by other equivalent or similar features, unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is merely one example of a series of equivalent or similar features.

[0025] The following is combined with Figure 1-5 The present invention will be described in detail below. For ease of description, the directions referred to below are defined as follows: the directions of up, down, left, right, front, and back mentioned below are the same as... Figure 1 The directions of front, back, left, right, up, and down in the view are consistent. Figure 1 This is a front view of the device of the present invention. Figure 1 The directions shown are consistent with the front-to-back, left-to-right, up-down directions of the device of the present invention when viewed from the front.

[0026] Please see Figure 1-5An embodiment of the present invention provides a friction welding heat treatment apparatus, comprising a working platform 10, which is composed of a base, side walls, and a top. The working platform 10 has only one side wall, with the remaining side walls being open. A friction welding mechanism 37 is provided within the inner cavity of the working platform 10, capable of friction welding two metal rods. A telescopic rod 17 is fixedly mounted on the top of the working platform 10. A T-shaped rod 18 is fixedly mounted on the output end face of the telescopic rod 17, and an intermediate plate 19 is fixedly mounted on the other end face of the T-shaped rod 18. Hollow outer plates 20 are rotatably mounted on both the front and rear ends of the intermediate plate 19 via a rotating shaft. The hollow outer plates 20 are cavities. Inner plates 21 are slidably mounted within the cavities of the two hollow outer plates 20. Springs 34 are fixedly installed between the inner walls of the plate 20. Vertical plates 36 are provided on the opposite surfaces of the two hollow outer plates 20 through a transmission mechanism 35. The two ends of the vertical plates 36 are hinged and rotatably mounted with placement frames 23. Heating elements 24 are evenly fixedly installed on the two placement frames 23. The heating elements 24 are used for heating and can be heating diodes. Each heating element 24 can rotate synchronously relative to the vertical plate 36 connected to it through the placement frame 23. Clamping rods 22 are rotatably provided on the left and right sides of the middle plate 19, the hollow outer plate 20, and the inner plate 21 through a base 38. The clamping rods 22 are connected to the base 38 through a return spring, so that the clamping rods 22 can have a mutual force. Flexible high-temperature resistant material is laid on the clamping rods 22 on the same side.

[0027] In another embodiment, the transmission mechanism 35 includes a hollow transmission rod 29 fixedly mounted on the hollow outer plate 20. One end of the hollow transmission rod 29 is fixedly connected to the vertical plate 36, and the other end is fixedly connected to the hollow outer plate 20. The interior of the hollow transmission rod 29 communicates with the interior of the hollow outer plate 20. A gear 30 is rotatably mounted on the inner wall of the hollow transmission rod 29. The gear 30 meshes with the inner plate 21. A sliding rod 32 is slidably mounted on the inner wall of the hollow transmission rod 29. The sliding rod 32 and the gear 30 are connected by a linkage rod 31. The linkage rod 31 is hinged to the sliding rod 32 and the gear 30 respectively. The sliding rod 32 is hinged to the two placement frames 23 respectively by splicing rods 33.

[0028] In another embodiment, the T-shaped rod 18 is hinged to the two hollow outer plates 20 via telescopic elements 28, which can be hydraulic rods and can drive the hollow outer plates 20 to rotate around the middle plate 19.

[0029] In another embodiment, the friction welding mechanism 37 includes an electric telescopic rod 11 fixedly installed on the inner wall of the working platform 10, a clamping device 12 fixedly installed at the output end of the electric telescopic rod 11, an electric guide rail 13 provided on the bottom wall of the inner cavity of the working platform 10, a clamping plate 14 slidably installed on the electric guide rail 13, and a power element 15 fixedly installed on the side wall of the clamping plate 14 facing the electric telescopic rod 11. The power element 15 can be a motor, and the clamping device 12 is also fixedly installed at the output end of the power element 15. The center lines of the clamping device 12 on the electric telescopic rod 11 and the clamping device 12 on the power element 15 are kept consistent, so that the two can maintain the center line consistency when moving relative to each other and not deviate.

[0030] In another embodiment, the clamping device 12 includes a hollow disc 25, on which a movable arc plate 26 is evenly slidably disposed. A threaded hole corresponding to the movable arc plate 26 is provided through the wall of the hollow disc 25, and a bolt 27 is provided in each threaded hole. The bolt 27 is rotatably connected to the movable arc plate 26 corresponding to it.

[0031] In another embodiment, the surface of the moving arc plate 26 is provided with a friction pad.

[0032] In another embodiment, the clamping plate 14 is provided with a warning light 16 on its top, which is used to warn whether the machine is in operation.

[0033] In another embodiment, reflective materials, such as gold, silver, nickel, aluminum foil, or metal-plated polyester or polyimide films, are laid on the walls of the intermediate plate 19, the hollow outer plate 20, and the inner plate 21.

[0034] In practice, the two rods to be welded are placed on the two clamping devices 12 respectively. The bolt 27 is rotated, and the bolt 27 drives the moving arc plate 26 to move towards the middle. The three moving arc plates 26 fix and hold one end of the rod. Then, the electric guide rail 13 and the power element 15 are started. The electric guide rail 13 drives the clamping plate 14 to move towards the motor output end. At the same time, the power element 15 drives one rod to rotate at high speed, while the other rod remains stationary. When the two rods come into contact with each other for welding, the electric guide rail 13 is closed and the electric telescopic rod 11 is started. The electric telescopic rod 11 drives the other non-rotating rod to move, thereby squeezing and welding it.

[0035] At the moment the two rods come into contact, the telescopic rod 17 is activated, which drives the intermediate plate 19 to move downward as a whole. When the welding point of the rods is located between the two hollow outer plates 20 and the inner plate 21, the movement stops. Then the heating element 24 is activated, and the heating element 24 continuously heats up. The heat radiation heats up the welding point. At this time, when the two rods are frictionally welding, the heating element 24 has a certain heating effect on the welding point, making the heat conduction of the two rods more complete and the welding more solid.

[0036] Immediately after welding, two telescopic elements 28 are activated. These elements drive the hollow outer plates 20 on the same side to move relative to the middle plate 19. The welded rod is then encased by the symmetrical hollow outer plates 20 and inner plates 21, primarily covering the welded area. Simultaneously, multiple clamping rods 22 contact the rod, and a return spring ensures tight contact between one end of each clamping rod and the rod. At this point, the flexible high-temperature resistant material on the clamping rods 22, along with the hollow outer and inner plates 20 and 21, seals the welded area. Subsequently, the heating element 24 continues to heat the welded area. Since the heating element 24 has been preheated, the temperature is now very high. This process ensures that the welded area does not cool down but is directly annealed, preserving the microstructure and mechanical properties of the welded area and avoiding the negative effects of annealing after natural cooling. Simultaneously, the intermediate plate 19 and the hollow outer plate 20 move relative to each other, causing the two inner plates 21 to come into contact with each other. This continues to drive the hollow outer plate 20 and the inner plates 21 to move around the intermediate plate 19, causing the two inner plates 21 to press against each other and slowly retract into the hollow outer plate 20. The inner plates 21 slide in the hollow outer plate 20, driving the gear 30 to rotate. The gear 30 drives the sliding rod 32 to slide on the inner wall of the hollow transmission rod 29 through the linkage rod 31. The sliding rod 32 drives the placement frame 23 to rotate relative to the vertical plate 36 through the splicing rod 33. The rotation of the placement frame 23 can adjust the distance between the heating element 24 and the rod. No matter how large the rod is, all heating elements 24 will maintain the same distance from the rod and will evenly surround the rod, ensuring uniform heating around the rod and making the welding point of the rod receive the same temperature. This improves the effect of annealing and prevents one side from being hotter than the other, thus affecting the performance of the rod.

[0037] The above description is merely a specific embodiment of the invention, but the scope of protection of the invention is not limited thereto. Any variations or substitutions conceived without inventive effort should be included within the scope of protection of the invention. Therefore, the scope of protection of the invention should be determined by the scope defined in the claims.

Claims

1. A friction welding heat treatment apparatus, comprising a working platform (10), characterized in that: The working platform (10) is equipped with a friction welding mechanism (37) in its inner cavity. The friction welding mechanism (37) can perform friction welding on two metal rods. A telescopic rod (17) is fixedly installed on the top of the working platform (10). A T-shaped rod (18) is fixedly installed on the output end face of the telescopic rod (17). A middle plate (19) is fixedly installed on the other end face of the T-shaped rod (18). Hollow outer plates (20) are rotatably provided on the front and rear end faces of the middle plate (19) through a rotating shaft. The hollow outer plates (20) are set as cavities. Inner plates (21) are slidably installed in the inner cavities of the two hollow outer plates (20). Springs (34) are fixedly installed between the inner plates (21) and the inner cavity walls of the hollow outer plates (20). Vertical plates (36) are provided on opposite surfaces of the plate (20) via a transmission mechanism (35). The two ends of the vertical plates (36) are hinged to mount the placement frame (23). Heating elements (24) are evenly fixed on the two placement frames (23). Each heating element (24) can rotate synchronously relative to the vertical plate (36) connected to it via the placement frame (23). The middle plate (19), the hollow outer plate (20), and the inner plate (21) are provided with clamping rods (22) on both sides via a base (38). The clamping rods (22) are connected to the base (38) via a return spring. Flexible high-temperature resistant material is laid on the clamping rods (22) on the same side.

2. The friction welding heat treatment apparatus according to claim 1, characterized in that: The transmission mechanism (35) includes a hollow transmission rod (29) fixedly mounted on the hollow outer plate (20). One end of the hollow transmission rod (29) is fixedly connected to the vertical plate (36), and the other end is fixedly connected to the hollow outer plate (20). The interior of the hollow transmission rod (29) is connected to the interior of the hollow outer plate (20). A gear (30) is rotatably mounted on the inner wall of the hollow transmission rod (29). The gear (30) meshes with the inner plate (21). A sliding rod (32) is slidably mounted on the inner wall of the hollow transmission rod (29). The sliding rod (32) is connected to the gear (30) through a linkage rod (31). The linkage rod (31) is hinged to the sliding rod (32) and the gear (30) respectively. The sliding rod (32) is hinged to the two placement racks (23) respectively through splicing rods (33).

3. The friction welding heat treatment apparatus according to claim 1, characterized in that: The T-shaped bar (18) and the two hollow outer plates (20) are respectively hinged by telescopic elements (28), and the telescopic elements (28) can drive the hollow outer plates (20) to rotate around the middle plate (19).

4. The friction welding heat treatment apparatus according to claim 1, characterized in that: The friction welding mechanism (37) includes an electric telescopic rod (11) fixedly installed on the inner wall of the working platform (10), a clamping device (12) fixedly installed at the output end of the electric telescopic rod (11), an electric guide rail (13) provided on the bottom wall of the inner cavity of the working platform (10), a clamping plate (14) slidably installed on the electric guide rail (13), a power element (15) fixedly installed on the side wall of the clamping plate (14) facing the electric telescopic rod (11), and a clamping device (12) also fixedly installed at the output end of the power element (15). The center lines of the clamping device (12) on the electric telescopic rod (11) and the clamping device (12) on the power element (15) are consistent.

5. The friction welding heat treatment apparatus according to claim 4, characterized in that: The clamping device (12) includes a hollow disc (25), on which a moving arc plate (26) is evenly slidably provided. A threaded hole corresponding to the moving arc plate (26) is provided through the wall of the hollow disc (25). A bolt (27) is provided in each threaded hole. The bolt (27) is rotatably connected to the moving arc plate (26) corresponding to it.

6. The friction welding heat treatment apparatus according to claim 5, characterized in that: The surface of the moving arc plate (26) is provided with a friction pad.

7. The friction welding heat treatment apparatus according to claim 4, characterized in that: The clamping plate (14) is provided with a warning light (16) on the top, which is used to warn whether the machine is in working condition.

8. The friction welding heat treatment apparatus according to claim 1, characterized in that: Reflective material is laid on the walls of the intermediate plate (19), the hollow outer plate (20), and the inner plate (21).

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