Hydraulic turbine component welding and post-weld stress relief annealing process

Abstract

The application relates to the technical field of water turbine part machining, in particular to a water turbine part welding and post-welding stress relieving annealing process, which relates to a machining device, the machining device comprising a positioning mechanism and a reinforcing mechanism arranged on a workbench, a three-jaw chuck being arranged above the workbench, the three-jaw chuck being connected to a fixing frame through a first electric telescopic rod, alignment mechanisms being symmetrically arranged at the lower end of the three-jaw chuck, an annealing mechanism being arranged on the jaw of the three-jaw chuck, and a driving source being arranged on the three-jaw chuck; the annealing mechanism can synchronously perform annealing operations on the two sides of multiple blades, compared with the existing sequential annealing operation mode, the working time is greatly saved, the working efficiency is improved, and the operation is simple and convenient, time and labor are saved.

Description

Technical Field

[0001] This invention relates to the technical field of turbine component processing, specifically to a turbine component welding and post-weld stress-relieving annealing process. Background Technology

[0002] The turbine impeller is one of the core components of a water turbine, used to convert the kinetic energy of water flow into mechanical energy, and is commonly found in hydroelectric power stations and water pumps.

[0003] The turbine impeller is a critical component in a hydroelectric power plant. Its blades must withstand the impact of high-speed water flow and rotational inertia, making the impeller's quality and durability paramount. Welding is a common process in impeller manufacturing, and stress-relief annealing after welding is a crucial step. This post-weld stress-relief annealing process is essential for ensuring the impeller's safe and reliable operation and extending its service life, playing a vital role in guaranteeing the long-term operation and safe production of hydroelectric power equipment.

[0004] In the current process of machining turbine impeller components, multiple blades are first welded sequentially onto a turntable, forming the impeller. Then, stress-relief annealing is performed on the weld joints. However, the existing annealing process requires moving the annealing torch sequentially along the weld joints between the blades and the turntable. This necessitates rotating the turntable or moving the annealing torch to perform annealing on different blades in sequence. Furthermore, annealing is required on both sides of the blades at the weld joints with the turntable. Although this method can complete the annealing process, it is time-consuming, labor-intensive, cumbersome, and inefficient. Therefore, there is an urgent need for a welding and post-weld stress-relief annealing process for turbine components. Summary of the Invention

[0005] This invention provides a welding process for turbine components and a post-weld stress-relieving annealing process, which solves the problems existing in the background art.

[0006] This invention provides a welding process for turbine components and a post-weld stress-relief annealing process. The annealing process involves a processing device, which includes a positioning mechanism and a reinforcing mechanism mounted on a worktable. A three-jaw chuck is mounted above the worktable and is connected to a fixed frame via a first electric telescopic rod. Alignment mechanisms are symmetrically mounted at the lower end of the three-jaw chuck. Annealing mechanisms are mounted on the jaws of the three-jaw chuck, and a drive source is mounted on the three-jaw chuck.

[0007] The positioning mechanism includes a circular column fixedly connected to the center of the worktable, with multiple receiving slots evenly distributed along the circumference of the circular column, and extrusion columns elastically connected inside the receiving slots. A rectangular slot is provided at the upper end of the circular column.

[0008] The reinforcement mechanism includes a moving groove evenly spaced around the workbench, with a T-shaped fixing plate slidably connected inside the moving groove. Rubber pads that increase friction are fixedly connected to the inner arc surface of the T-shaped fixing plate.

[0009] The annealing mechanism includes a timing frame fixedly connected to the jaws, with limit holes on both sides of the timing frame, and annealing components slidably connected in the limit holes.

[0010] The process of welding and post-weld stress-relieving annealing of turbine components using the above-mentioned processing equipment specifically includes the following steps:

[0011] S1. Weld multiple blades to the turntable using existing welding equipment to form an impeller.

[0012] S2. Place the impeller, which has been welded in step S1, on a circular workbench and use a positioning mechanism to initially position the impeller.

[0013] S3. Rotate the impeller to adjust its position so that any two opposite blades rotate to the bottom of the alignment mechanism. Lower the three-jaw chuck to mate with the circular worktable and place the annealing mechanism and blades together.

[0014] S4. Finally, the reinforcement mechanism is used to fix the impeller in place, and the annealing mechanism is started to anneal the connection between the blade and the turntable.

[0015] S5. After completing the annealing process, remove the machined impeller and place the impeller to be machined, then proceed to the next round of operations.

[0016] In one possible implementation, the lower end of the T-shaped fixing plate, away from the circular column, is connected to the inner wall of the moving groove by a compression spring. The upper end of the T-shaped fixing plate has an arc-shaped structure, and a connecting rope is fixedly connected to the side of the arc-shaped structure away from the circular column. The connecting rope is fixedly connected and wound around the limiting column, and the limiting column is threadedly connected to a threaded hole opened at the bottom of the workbench.

[0017] In one possible implementation, the alignment mechanism includes a clearance groove fixedly connected to the bottom end of a three-jaw chuck, a second electric telescopic rod fixedly connected to the clearance groove, and an arc-shaped U-shaped clamping plate fixedly connected to the bottom end of the second electric telescopic rod, the arc of the arc-shaped U-shaped clamping plate being the same as the arc of the blade.

[0018] In one possible implementation, the annealing assembly includes a sliding rod slidably connected within a limiting hole, a sliding block fixedly connected to the lower end of the sliding rod, the sliding block slidably connected to a track assembly, an elastic U-shaped connecting frame fixedly connected to the upper end of the sliding block, a mating block fixedly connected to the other end of the elastic U-shaped connecting frame, annealing guns fixedly connected to opposite sides of the sliding block and the mating block, and a fitting assembly provided on opposite sides of the vertical side of the elastic U-shaped connecting frame.

[0019] In one possible implementation, the trajectory assembly includes an arc-shaped plate with the same curvature as the blade, a trajectory sliding hole in the middle of the arc-shaped plate, a sliding block slidably connected in the trajectory sliding hole, and the side of the arc-shaped plate near the circular column fixedly connected to the annular frame, the upper end of the annular frame being fixedly connected to the bottom end of the three-jaw chuck by multiple connecting rods.

[0020] In one possible implementation, the bonding assembly includes a compression spring fixedly connected to the opposite side of the vertical side of the elastic U-shaped frame, and the other end of the compression spring is fixedly connected to a bonding plate, wherein the curvature of the opposite sides of the two bonding plates is the same as the inner and outer curvature of the blade.

[0021] In one possible implementation, the arc-shaped U-shaped plate is an elastic rubber component, and the inner side of the bottom end of the arc-shaped U-shaped plate has a figure-eight notch.

[0022] In one possible implementation, the vertical sections on both sides of the elastic U-shaped frame are arranged to gradually approach each other from top to bottom, and the opposite sides of the two bonding plates are smooth surfaces to reduce friction.

[0023] In one possible implementation, the lower end of the three-jaw chuck is fixedly connected to a rectangular post that corresponds to the rectangular slot.

[0024] The above-described one or more technical solutions in the embodiments of the present invention have at least one of the following technical effects:

[0025] 1. According to an embodiment of the present invention, a welding and post-weld stress-relieving annealing process for turbine components is provided. This process involves a processing device. The annealing mechanism can simultaneously perform annealing operations on both sides of multiple blades. Compared with the existing sequential annealing operation mode, it greatly saves operation time, improves operation efficiency, and is simple and convenient to operate, saving time and effort.

[0026] 2. According to an embodiment of the present invention, a welding and post-weld stress-relieving annealing process for a turbine component is provided. This process involves a processing device. The welded impeller is initially positioned by a positioning mechanism, and the impeller is further fixed and positioned by a reinforcement mechanism. The double fixation makes the impeller more stable, so as to avoid rotation during subsequent annealing operations that would affect the overall effect.

[0027] 3. According to an embodiment of the present invention, a welding and post-weld stress-relieving annealing process for turbine components is provided. This process involves a processing device. By setting a trajectory component, when the annealing component on the same blade moves away from the center driven by the synchronous frame, it can move along the curvature of the blade so as to better fit the curvature of the weld for annealing, making the trajectory movement clearer and improving the accuracy of the operation. Attached Figure Description

[0028] Figure 1 This is a process flow diagram of a welding and post-weld stress-relieving annealing process for a water turbine component provided in an embodiment of the present invention.

[0029] Figure 2 This is a first-view structural schematic diagram (viewed from top to bottom) of the processing device involved in the welding and post-weld stress-relieving annealing process of a water turbine component provided in an embodiment of the present invention.

[0030] Figure 3 This is a second-view structural schematic diagram (viewed from bottom to top) of the processing device involved in the welding and post-weld stress-relieving annealing process of a water turbine component provided in an embodiment of the present invention.

[0031] Figure 4 This is a partial structural schematic diagram of the processing device involved in the welding and post-weld stress-relieving annealing process of a water turbine component provided in an embodiment of the present invention.

[0032] Figure 5 This is a schematic diagram of the positioning mechanism and reinforcement mechanism of the processing device involved in the welding and post-weld stress-relieving annealing process of a water turbine component provided in an embodiment of the present invention.

[0033] Figure 6 This is a schematic diagram of the trajectory component structure of a processing device involved in the welding and post-weld stress-relief annealing process of a water turbine component, as provided in an embodiment of the present invention.

[0034] Figure 7 yes Figure 6 Enlarged view of point A in the middle.

[0035] Figure 8 This is a schematic diagram of the arc-shaped U-shaped clamping plate structure of the processing device involved in the welding and post-weld stress-relieving annealing process of a water turbine component provided in an embodiment of the present invention.

[0036] In the diagram: 1. Workbench; 2. Positioning mechanism; 21. Circular column; 22. Receiving groove; 23. Extrusion column; 24. Rectangular groove; 3. Reinforcing mechanism; 31. Moving groove; 32. T-shaped fixing plate; 33. Extrusion spring; 34. Connecting rope; 35. Limiting column; 4. Three-jaw chuck; 41. Jaw; 42. Rectangular column; 5. Alignment mechanism; 51. Leaving groove; 52. Second electric telescopic rod; 53. Arc-shaped U-shaped clamping plate; 6. Annealing mechanism; 61. Synchronizing frame; 62. Limiting hole; 63. Annealing assembly; 631. Sliding rod; 632. Sliding block; 633. Elastic U-shaped connecting frame; 634. Matching block; 635. Annealing spray gun; 65. Track assembly; 651. Arc plate; 652. Track sliding hole; 653. Ring frame; 66. Bonding assembly; 661. Compression spring; 662. Bonding plate. Detailed Implementation

[0037] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described below, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0038] Please see Figure 2 , Figure 3 and Figure 4 A welding and post-weld stress-relieving annealing process for a water turbine component is disclosed. This annealing process involves a processing device, which includes a positioning mechanism 2 and a reinforcing mechanism 3 mounted on a workbench 1. A three-jaw chuck 4 is mounted above the workbench 1 and connected to a fixed frame (not shown in the figure) via a first electric telescopic rod. Alignment mechanisms 5 are symmetrically arranged at the lower end of the three-jaw chuck 4. An annealing mechanism 6 is mounted on the jaws 41 of the three-jaw chuck 4, and a drive source is mounted on the three-jaw chuck 4. The positioning mechanism 2 includes a circular column 21 fixedly connected to the center of the workbench 1. Multiple receiving grooves 22 are evenly distributed along the circumference of the circular column 21. Extrusion columns 23 are elastically connected within the receiving grooves 22. These elastic connections can be spring connections or elastic rubber connections. A rectangular... The rectangular groove 24; the lower end of the three-jaw chuck 4 is fixedly connected to a rectangular column 42 corresponding to the rectangular groove 24; when the three-jaw chuck 4 descends, the rectangular column 42 docks with the rectangular groove 24. Due to the rectangular structure, the docked three-jaw chuck 4 and the worktable 1 are circumferentially fixed and coaxially arranged, which facilitates subsequent operation. The reinforcement mechanism 3 includes a moving groove 31 evenly opened circumferentially on the worktable 1. A T-shaped fixing plate 32 is slidably connected in the moving groove 31. Rubber pads that increase friction are fixedly connected to the inner arc surface of the T-shaped fixing plate 32 to increase the stability of the circumferential connection with the blade. The annealing mechanism 6 includes a synchronous frame 61 fixedly connected to the jaw 41. Limiting holes 62 are opened on both sides of the synchronous frame 61. Annealing components 63 are slidably connected in the limiting holes 62.

[0039] During operation, the welded impeller is placed on the circular worktable 1, and the impeller is initially positioned by the positioning mechanism 2. The impeller is rotated to adjust its position so that any two opposite blades are rotated to the underside of the alignment mechanism 5. The annealing mechanism 6 is then placed in conjunction with the blades. After the annealing mechanism 6 is placed in conjunction with the blades, the alignment mechanism 5 is raised to avoid affecting the subsequent movement of the annealing mechanism 6. The three-jaw chuck 4 is lowered to mate with the circular worktable 1. Finally, the reinforcing mechanism 3 is used to reinforce and fix the impeller in place, and the annealing mechanism 6 is started to perform annealing operations at the connection between the blades and the turntable.

[0040] See Figure 3 and Figure 5 The lower end of the T-shaped fixing plate 32, away from the circular column 21, is connected to the inner wall of the moving groove 31 by a compression spring 33. The upper end of the T-shaped fixing plate 32 is an arc-shaped structure. A connecting rope 34 is fixedly connected to the side of the arc-shaped structure away from the circular column 21. The connecting rope 34 is fixedly connected and wound around the limiting column 35. The limiting column 35 is threadedly connected to the threaded hole opened at the bottom of the workbench 1.

[0041] During operation, when placing the impeller, the limiting post 35 is rotated by an external rotating device (such as a bidirectional rotating motor) or manually, causing multiple connecting ropes 34 to rotate around the limiting post 35, pulling the T-shaped fixing plate 32 to move away from the center of the worktable 1. At this time, the compression spring 33 is compressed, and the multiple T-shaped fixing plates 32 form a circular structure with the largest diameter. Since the limiting post 35 is threaded into the threaded hole at the bottom of the worktable 1, it has self-locking properties during the winding of the connecting ropes 34, preventing the T-shaped fixing plate 32 from sliding.

[0042] See Figure 4 , Figure 6 and Figure 8 The alignment mechanism 5 includes a clearance groove 51 fixedly connected to the bottom end of the three-jaw chuck 4. A second electric telescopic rod 52 is fixedly connected to the clearance groove 51. An arc-shaped U-shaped clamping plate 53 is fixedly connected to the bottom end of the second electric telescopic rod 52. The arc of the arc-shaped U-shaped clamping plate 53 is the same as the arc of the blade. The arc-shaped U-shaped clamping plate 53 is an elastic rubber part, and the inner side of the bottom end of the arc-shaped U-shaped clamping plate 53 has an eight-shaped notch.

[0043] During operation, after the impeller is placed, the positioning mechanism 2 provides initial positioning for the impeller, but this does not affect the impeller's ability to rotate on the worktable 1. Any two centrally symmetrically positioned blades on the impeller are aligned with the upper alignment mechanism 5. To increase alignment accuracy, the second electric telescopic rod 52 is activated, causing the arc-shaped U-shaped clamping plate 53 to move downwards, so that the upper end of the blade contacts the bottom end of the arc-shaped U-shaped clamping plate 53. Since the inner side of the bottom end of the arc-shaped U-shaped clamping plate 53 has a V-shaped notch, it facilitates the movement of the blades. The U-shaped clamp 53 better enters both sides of the blade. When the second electric telescopic rod 52 drives the U-shaped clamp 53 to continue downward, the U-shaped clamp 53 will adjust the position of the blade, thereby automatically driving the impeller to rotate and adjust on the worktable 1, which facilitates the subsequent mating of the annealing assembly 63 with the impeller. When the three-jaw chuck 4 moves downward as a whole, the U-shaped clamp 53, which has completed the alignment work, will move upward through the second electric telescopic rod 52 to avoid affecting the normal operation of the subsequent annealing mechanism 6.

[0044] See Figure 4 , Figure 6 and Figure 7The annealing assembly 63 includes a sliding rod 631 slidably connected within a limiting hole 62. A sliding block 632 is fixedly connected to the lower end of the sliding rod 631. The sliding block 632 is slidably connected to a trajectory assembly 65. An elastic U-shaped connecting frame 633 is fixedly connected to the upper end of the sliding block 632. A mating block 634 is fixedly connected to the other end of the elastic U-shaped connecting frame 633. Annealing guns 635 are fixedly connected to opposite sides of the sliding block 632 and the mating block 634. Adhesive components 66 are provided on opposite sides of the vertical sides of the elastic U-shaped connecting frame 633. The vertical sections on both sides of the elastic U-shaped connecting frame 633 gradually approach each other from top to bottom, and the opposite sides of the two adhesive plates 662 are smooth surfaces to reduce friction.

[0045] The trajectory assembly 65 includes an arc plate 651 with the same curvature as the blade. A trajectory sliding hole 652 is provided in the middle of the arc plate 651. A sliding block 632 is slidably connected in the trajectory sliding hole 652. The side of the arc plate 651 near the circular column 21 is fixedly connected to the ring frame 653. The upper end of the ring frame 653 is fixedly connected to the bottom end of the three-jaw chuck 4 through multiple connecting rods.

[0046] During operation, the three-jaw chuck 4 moves downward under the action of the first electric telescopic rod until the rectangular column 42 aligns with the rectangular groove 24. At the same time, the vertical sections on both sides of the elastic U-shaped connecting frame 633 are positioned on both sides of the blade. The nozzles of the annealing spray guns 635 on both sides of the blade are located at the welding connection between the blade and the turntable. The external drive source is activated to drive the three-jaw chuck 4, which in turn drives multiple jaws 41 to move the synchronous frame 61. During the movement of the synchronous frame 61, the sliding rods 631 on both sides move away from the center of the worktable 1. The sliding block 632 moves in the trajectory sliding hole 652 of the arc plate 651. Since the arc plate 651 is completely consistent with the curvature of the blade, the annealing spray gun 635 always maintains the same distance from the welding point during the spraying operation. The sliding rod 631 moves in the limiting hole 62 to adapt to the distance changes of adjacent blades.

[0047] See Figure 6 and Figure 7 The bonding component 66 includes a compression spring 661 fixedly connected to the opposite side of the vertical side of the elastic U-shaped frame 633. The other end of the compression spring 661 is fixedly connected to a bonding plate 662. The curvature of the opposite sides of the bonding plates 662 is the same as the inner and outer curvature of the blade.

[0048] During operation, when the elastic U-shaped connecting frame 633 is located on both sides of the same blade, the bonding plate 662 will be bonded to the surface of the blade and move along the surface of the blade. The bonding plate 662 and the clamping spring 661 are configured to ensure a safe distance between the annealing spray gun 635 and the welding point, and to ensure that the distance between the annealing spray gun 635 and the welding point remains consistent during the movement of the annealing spray gun 635.

[0049] See Figure 1 The above-mentioned processing equipment is used to perform welding and post-weld stress-relieving annealing processes on turbine components, specifically including the following steps:

[0050] S1. Weld multiple blades to the turntable using existing welding equipment to form an impeller.

[0051] S2. Place the impeller, which has been welded in step S1, on the circular worktable 1, and perform preliminary positioning of the impeller using the positioning mechanism 2.

[0052] S3. Rotate the impeller to adjust its position so that any two opposite blades rotate to the position below the alignment mechanism 5. Lower the three-jaw chuck 4 to engage with the circular worktable 1 and place the annealing mechanism 6 in conjunction with the blades.

[0053] S4. Finally, the reinforcing mechanism 3 is used to reinforce and fix the impeller, and the annealing mechanism 6 is started to anneal the connection between the blade and the turntable.

[0054] S5. After completing the annealing process, remove the machined impeller and place the impeller to be machined, then proceed to the next round of operations.

[0055] In embodiments of the present invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0056] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "connected," "installed," and "connected" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, an integral connection, or a sliding connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0057] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made based on the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A welding process for water turbine components and a post-weld stress-relieving annealing process, characterized in that: The annealing process involves a processing device, which includes a positioning mechanism and a reinforcing mechanism set on a worktable. A three-jaw chuck is set above the worktable. The three-jaw chuck is connected to a fixed frame via a first electric telescopic rod. An alignment mechanism is symmetrically set at the lower end of the three-jaw chuck. An annealing mechanism is set on the jaws of the three-jaw chuck. A drive source is set on the three-jaw chuck. The positioning mechanism includes a circular column fixedly connected to the center of the worktable, multiple receiving slots evenly opened along the circumference of the circular column, extrusion columns elastically connected in the receiving slots, and a rectangular slot opened at the upper end of the circular column. The reinforcement mechanism includes a moving groove evenly opened in the circumference of the workbench, and a T-shaped fixing plate is slidably connected in the moving groove. The inner arc surface of the T-shaped fixing plate is fixedly connected with rubber pads to increase friction. The annealing mechanism includes a timing frame fixedly connected to the jaws, with limit holes on both sides of the timing frame, and an annealing component slidably connected in the limit holes; The alignment mechanism includes a second electric telescopic rod, and an arc-shaped U-shaped clamping plate is fixedly connected to the bottom end of the second electric telescopic rod. The arc of the arc-shaped U-shaped clamping plate is the same as the arc of the blade. The arc-shaped U-shaped card is an elastic rubber component, and the inner side of the bottom end of the arc-shaped U-shaped card has an eight-shaped notch. The process of welding and post-weld stress-relieving annealing of turbine components using the above-mentioned processing equipment specifically includes the following steps: S1. Weld multiple blades to a turntable using existing welding equipment to form an impeller; S2. Place the impeller, which has been welded in step S1, on a circular worktable and use a positioning mechanism to initially position the impeller. S3. Rotate the impeller to adjust its position so that any two opposite blades rotate to the bottom of the alignment mechanism. Lower the three-jaw chuck to engage with the circular worktable and place the annealing mechanism and blades together. S4. Finally, the reinforcement mechanism is used to fix the impeller in place, and the annealing mechanism is started to anneal the connection between the blade and the turntable. S5. After completing the annealing process, remove the machined impeller and place the impeller to be machined, then proceed to the next round of operations.

2. The welding and post-weld stress-relieving annealing process for turbine components according to claim 1, characterized in that: The lower end of the T-shaped fixing plate, away from the circular column, is connected to the inner wall of the moving groove by a compression spring. The upper end of the T-shaped fixing plate has an arc-shaped structure, and a connecting rope is fixedly connected to the side of the arc-shaped structure away from the circular column. The connecting rope is fixedly connected and wound around the limiting column, and the limiting column is threadedly connected to the threaded hole opened at the bottom of the workbench.

3. The welding and post-weld stress-relieving annealing process for turbine components according to claim 1, characterized in that: The alignment mechanism also includes a clearance groove fixedly connected to the bottom end of the three-jaw chuck, and a second electric telescopic rod is fixedly connected to the clearance groove.

4. The welding and post-weld stress-relieving annealing process for turbine components according to claim 1, characterized in that: The annealing assembly includes a sliding rod slidably connected in a limiting hole, a sliding block fixedly connected to the lower end of the sliding rod, the sliding block slidably connected in a track assembly, an elastic U-shaped frame fixedly connected to the upper end of the sliding block, a mating block fixedly connected to the other end of the elastic U-shaped frame, an annealing gun fixedly connected to the opposite sides of the sliding block and the mating block, and a fitting assembly provided on the opposite sides of the vertical side of the elastic U-shaped frame.

5. The welding and post-weld stress-relieving annealing process for turbine components according to claim 4, characterized in that: The trajectory assembly includes an arc-shaped plate with the same curvature as the blade. A trajectory sliding hole is opened in the middle of the arc-shaped plate, and a sliding block is slidably connected in the trajectory sliding hole. The side of the arc-shaped plate near the circular column is fixedly connected to the ring frame, and the upper end of the ring frame is fixedly connected to the bottom end of the three-jaw chuck through multiple connecting rods.

6. The welding and post-weld stress-relieving annealing process for turbine components according to claim 4, characterized in that: The bonding assembly includes a compression spring fixedly connected to the opposite side of the vertical side of the elastic U-shaped frame, and a bonding plate fixedly connected to the other end of the compression spring. The curvature of the opposite sides of the bonding plates is the same as the inner and outer curvature of the blade.

7. The welding and post-weld stress-relieving annealing process for turbine components according to claim 6, characterized in that: The vertical sections on both sides of the elastic U-shaped frame are arranged to gradually approach each other from top to bottom, and the opposite sides of the two bonding plates are smooth surfaces to reduce friction.

8. The welding and post-weld stress-relieving annealing process for turbine components according to claim 1, characterized in that: The lower end of the three-jaw chuck is fixedly connected to a rectangular post that corresponds to the rectangular slot.

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