Auxiliary device for flaw detection of titanium alloy forgings

Abstract

The invention discloses an auxiliary device for flaw detection of titanium alloy forgings, which relates to the technical field of flaw detection of titanium alloy forgings, and has the technical key points that the auxiliary device comprises a bracket with universal wheels and a limiting electric telescopic rod fixedly mounted on the bracket with the universal wheels, and a smearing detection structure is arranged at the bottom of the bracket with the universal wheels; the smearing detection structure comprises a sleeve rotationally connected to the bottom of the support with the universal wheels, and a double-shaft motor is fixedly installed in the center of the interior of the sleeve. Through the rubber block, the coupling agent flow guide channel, the containing bottle, the infusion pump and other conveying structures, uniform smearing of a coupling agent is achieved in cooperation with a servo motor; a position adjusting electric telescopic rod and a servo motor guarantee that the attaching pressure and the moving speed of the probe are constant, and the problems of manual smearing defects and unstable operation are solved; the rectangular groove and the scraping part prevent the coupling agent from turbulent flow to pollute an undetected area, the probe wiping part with the air cavity cleans the residual coupling agent, the detection continuity, the defect recognition accuracy and the repeated detection consistency are guaranteed, and standardized data are formed.

Description

Technical Field

[0001] This invention relates to the field of flaw detection technology for titanium alloy forgings, specifically to an auxiliary device for flaw detection of titanium alloy forgings. Background Technology

[0002] Titanium alloy forgings have become core basic component materials in key fields such as aerospace, nuclear power, and high-end equipment manufacturing. Specifically, they can be used in key components such as aero-engine casings, compressor blades, load-bearing rings for rocket propulsion systems, flanges for nuclear power plant reactor pressure vessels, mooring chain forgings for marine engineering platforms, and spindles for large precision machine tools. Among them, ring-shaped titanium alloy forgings are particularly widely used because they can adapt to the requirements of ring-shaped load-bearing and sealing conditions. These forgings are usually large in volume (large diameter), and their machining accuracy directly affects the assembly compatibility. The presence of internal defects such as cracks, shrinkage cavities, and inclusions directly determines the service safety of the component. Therefore, internal quality inspection is required, and flaw detection has become a mandatory inspection process before these forgings leave the factory.

[0003] Currently, the mainstream method for flaw detection of annular titanium alloy forgings is ultrasonic testing. The core of the testing relies on an ultrasonic detector. Due to the large size of the forgings, the top and bottom circular surfaces are still mainly operated manually by holding the ultrasonic probe. Before testing, the operator needs to manually apply a coupling agent (such as machine oil or special ultrasonic coupling paste) evenly to the test surface with a brush to eliminate the air gap between the probe and the test surface and ensure the effective transmission of ultrasonic waves.

[0004] However, in actual industrial testing scenarios, manual application of coupling agent has significant drawbacks: First, the thickness of the coupling agent is difficult to control. Too thick an application can lead to attenuation of ultrasonic energy, while too thin an application can fail to completely fill the gaps and may result in missed areas on the forging surface, directly affecting ultrasonic propagation efficiency and the signal-to-noise ratio of the detection signal, thus reducing the accuracy of defect identification. Second, when manually operating the probe, it is difficult to maintain a constant moving speed and contact pressure between the probe and the testing surface over a long period of time. This is especially true for large-diameter annular forgings, which require 2-3 operators to work together for segmented testing. This not only easily creates blind spots at the joints between segments, but also results in significant differences in the hand strength, movement rhythm, and other operating habits of different operators, leading to poor consistency in repeated testing results for the same forging and making it impossible to form standardized testing data. This not only reduces testing efficiency but also significantly increases the labor intensity of operators. Furthermore, the uncertainty of manual operation can easily lead to missed defects, posing a significant safety hazard to subsequent components and failing to meet the needs of critical fields for flaw detection of annular titanium alloy forgings. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides an auxiliary device for flaw detection of titanium alloy forgings, which can effectively solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an auxiliary device for flaw detection of titanium alloy forgings, comprising a bracket with casters and a limiting electric telescopic rod fixedly installed on the bracket with casters, wherein a coating detection structure is provided at the bottom of the bracket with casters.

[0007] The coating detection structure includes a sleeve rotatably connected to the bottom of a bracket with casters. A dual-axis motor is fixedly installed at the center of the sleeve. A coating control screw and a detection control screw are respectively fixedly installed at the two output ends of the dual-axis motor. A coating control screw block is threadedly connected to the outer side of the coating control screw block. An elastic connector penetrating the sleeve is fixedly installed at the bottom of the coating control screw block. A coating component is disposed below the elastic connector. A detection control screw block is threadedly connected to the outer side of the detection control screw block. A magnetic connector is disposed at the bottom of the detection control screw block. An ultrasonic flaw detection probe is disposed at the bottom of the magnetic connector.

[0008] Preferably, the elastic connector includes a serpentine rod fixedly installed at the bottom of the coating control screw block, a telescopic spring fixedly installed inside the serpentine rod, and a movable rod slidably connected to the serpentine rod fixedly installed at the lower end of the telescopic spring.

[0009] Preferably, the applicator includes a rubber block fixedly installed at the lower end of the movable rod. A rectangular groove is formed in the corner area of ​​the rubber block. A coupling agent flow channel is formed inside the rubber block. The liquid outlet of the coupling agent flow channel is located at the top of the rectangular groove. A probe wiping part is provided at the top of the rubber block. An air chamber is formed inside the probe wiping part. A coupling agent scraping part is provided on the side of the rubber block. A coupling agent waste liquid collection tank is also formed inside the rubber block. The coupling agent waste liquid collection tank is located on one side of the coupling agent scraping part and is adapted to and connected to the scraping surface of the coupling agent scraping part.

[0010] Preferably, the magnetic connector includes a vertical rod with a male magnet fixedly installed at the bottom of the detection control screw block, and a female magnet with a hole is magnetically connected to the bottom of the vertical rod with the male magnet; a rod with a limiting plate is fixedly installed at the output end of the limiting electric telescopic rod, and the rod with the limiting plate is adapted to the hole on the female magnet with a hole; an adjusting electric telescopic rod is fixedly installed at the bottom of the female magnet with a hole, and the adjusting electric telescopic rod is fixedly connected to the ultrasonic flaw detection probe.

[0011] Preferably, the serpentine rod is provided with a coupling agent holding structure, the coupling agent holding structure including a coupling agent holding bottle fixedly installed on the serpentine rod, a coupling agent delivery tube fixedly installed on the top of the coupling agent holding bottle, a corrugated pipe fixedly installed at the lower end of the coupling agent delivery tube, a liquid pump fixedly installed at the lower end of the corrugated pipe, and the output end of the liquid pump fixedly installed at the liquid inlet of the coupling agent flow channel.

[0012] Preferably, a servo motor is provided at the bottom of the sleeve, the output end of the servo motor is fixedly connected to the sleeve, and the distance between the centerline of the outlet port of the coupling agent guide channel and the centerline of the servo motor is equal to the distance between the centerline of the ultrasonic flaw detection probe and the centerline of the servo motor; a positioning structure is provided at the bottom of the servo motor.

[0013] Preferably, the positioning structure includes a threaded positioning shaft fixedly installed at the bottom of the servo motor, a lifting block is threadedly connected to the threaded positioning shaft, a rotating cylinder is rotatably connected to the outside of the lifting block, a plurality of inclined support rods are rotatably connected to the rotating cylinder, a base is fixedly installed at the bottom of the threaded positioning shaft, a plurality of arc-shaped block abutments are slidably connected to the base, and the lower end of the inclined support rod is rotatably connected to the arc-shaped block abutments.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. By setting up a rubber block, its internal coupling agent channel, and matching coupling agent container, pump, and delivery tube, and coordinating with the uniform rotation driven by a servo motor, the coupling agent is accurately guided and evenly applied to the detection area. At the same time, the contact pressure between the ultrasonic flaw detection probe and the detection surface is precisely controlled by the adjustable electric telescopic rod, and the servo motor ensures a constant probe movement speed. This solves the problems of difficult thickness control, easy omissions, and unstable pressure and movement speed when manually applying coupling agent, effectively improving the ultrasonic wave propagation efficiency and defect identification accuracy.

[0015] 2. By setting a rectangular groove on the rubber block and a couplant scraping part, the rectangular groove can prevent the couplant from flowing into the untested area during the couplant spraying process, and the couplant scraping part can wipe away the couplant that has spread to the untested area during the testing process in time, so as to avoid contamination of the untested area. This solves the problem of couplant turbulence affecting subsequent testing in manual operation and ensures the continuity and accuracy of the layered testing process.

[0016] 3. By setting up a probe wiping part with an air cavity on the rubber block, the air cavity deforms to match the probe contour, which can clean the residual coupling agent on the ultrasonic flaw detection probe, avoid the problem of residual coupling agent affecting the detection accuracy of the ultrasonic flaw detection probe, ensure the consistency of repeated test results for the same annular titanium alloy forging, and form standardized and accurate test data. Attached Figure Description

[0017] Figure 1 This is a complete structural schematic diagram of the present invention; Figure 2 For the present invention Figure 1 Another perspective structural diagram; Figure 3 For the present invention Figure 2 Another perspective structural diagram; Figure 4 For the present invention Figure 3 A schematic diagram of the cross-sectional structure; Figure 5 For the present invention Figure 4 Enlarged structural diagram at point A above; Figure 6 This is a schematic diagram of the coupling agent holding structure and the cross-section of the coating part of the present invention; Figure 7 This is a schematic diagram of the structure of the coating component of the present invention; Figure 8 For the present invention Figure 7 Another perspective structural diagram.

[0018] In the picture: 1. Bracket with casters; 2. Limiting electric telescopic rod; 3. Coating detection structure; 31. Sleeve; 32. Dual-axis motor; 33. Coating control screw; 34. Detection control screw; 35. Coating control screw block; 36. Elastic connector; 361. Serpentine rod; 362. Telescopic spring; 363. Movable rod; 37. Coating component; 371. Rubber block; 372. Rectangular groove; 373. Coupling agent guide channel; 374. Probe wiping part; 375. Air chamber; 376. Coupling agent scraping part; 377. Coupling agent waste liquid collection tank; 38. Detection and control screw block; 39. Magnetic connector; 391. Vertical rod with male magnet block; 392. Female magnet block with hole; 393. Adjustable electric telescopic rod; 310. Ultrasonic flaw detector probe; 4. Insert rod with limit plate; 5. Coupling agent holding structure; 51. Coupling agent holding bottle; 52. Coupling agent guide tube; 53. Corrugated pipe; 54. Liquid pump; 6. Servo motor; 7. Positioning structure; 71. Threaded positioning shaft; 72. Lifting block; 73. Rotating cylinder; 74. Inclined support rod; 75. Base; 76. Rod with arc-shaped block. Detailed Implementation

[0019] In this invention, unless otherwise stated, the directional terms such as "up" and "down" generally refer to the directions shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" generally refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not intended to limit this invention.

[0020] This invention provides a technical solution: Please see Figures 1 to 8An auxiliary device for flaw detection of titanium alloy forgings includes a bracket with casters 1 and a limiting electric telescopic rod 2 fixedly installed on the bracket with casters 1. A coating detection structure 3 is provided at the bottom of the bracket with casters 1. The coating detection structure 3 includes a sleeve 31 rotatably connected to the bottom of the bracket with casters 1. A dual-axis motor 32 is fixedly installed at the center inside the sleeve 31. A coating control screw 33 and a detection control screw 34 are fixedly installed at the two output ends of the dual-axis motor 32, respectively. A coating control screw block 35 is threadedly connected to the outer side of the coating control screw 33. An elastic connector 36 penetrating the sleeve 31 is fixedly installed at the bottom of the coating control screw block 35. A coating component 37 is provided below the elastic connector 36. A detection control screw block 38 is threadedly connected to the outer side of the detection control screw 34. A magnetic connector 39 is provided at the bottom of the detection control screw block 38. An ultrasonic flaw detection probe 310 is provided at the bottom of the magnetic connector 39.

[0021] The bracket 1 with casters allows the device to be moved flexibly to the inspection position. The limit electric telescopic rod 2 assists in the positioning of the magnetic connector 39. The coating and inspection structure 3 integrates coating and flaw detection functions. During operation, the dual-axis motor 32 drives the coating control screw 33 and the inspection control screw 34 to rotate synchronously in opposite directions, which in turn drives the coating control screw block 35 and the inspection control screw block 38 to move. This adjusts the coating part 37 below the elastic connector 36 and the ultrasonic flaw detection probe 310 at the bottom of the magnetic connector 39 to the appropriate position. The elastic connector 36 allows the coating part 37 to elastically fit the forging. The sleeve 31 rotates in coordination to achieve full-area operation. Finally, the coating part 37 completes the uniform application of coupling agent, and the ultrasonic flaw detection probe 310 accurately detects defects in the forging. This system solves many problems associated with manual operation and improves inspection efficiency and accuracy.

[0022] Please see Figure 2 , Figure 4 and Figure 6 The elastic connector 36 includes a serpentine rod 361 fixedly installed at the bottom of the coating control screw block 35. A telescopic spring 362 is fixedly installed inside the serpentine rod 361. A movable rod 363 that is slidably connected to the serpentine rod 361 is fixedly installed at the lower end of the telescopic spring 362.

[0023] During operation, the elastic connector 36 moves with the coating control screw block 35, and the serpentine rod 361 provides basic support. The internal telescopic spring 362 can extend and retract flexibly, driving the movable rod 363, which is slidably connected to the serpentine rod 361, to adjust up and down. This allows the coating component 37 at the lower end of the movable rod 363 to elastically conform to the surface of the forging, playing a buffering and adaptation role. This avoids uneven coating or damage to parts and forgings caused by hard contact, ensuring the stability of the coupling agent coating process and laying the foundation for the accuracy of subsequent flaw detection.

[0024] Please see Figure 3 , Figure 6 , Figure 7 and Figure 8 The applicator 37 includes a rubber block 371 fixedly installed at the lower end of the movable rod 363. A rectangular groove 372 is provided in the corner area of ​​the rubber block 371. A coupling agent guiding channel 373 is provided inside the rubber block 371. The liquid outlet of the coupling agent guiding channel 373 is located at the top of the rectangular groove 372. A probe wiping part 374 is provided at the top of the rubber block 371. An air chamber 375 is provided inside the probe wiping part 374. A coupling agent scraping part 376 is provided on the side of the rubber block 371. A coupling agent waste liquid collection tank 377 is also provided inside the rubber block 371. The coupling agent waste liquid collection tank 377 is located on one side of the coupling agent scraping part 376 and is adapted to and connected to the scraping surface of the coupling agent scraping part 376.

[0025] After the applicator 37 is adjusted to the appropriate position by the movable rod 363, the rubber block 371 elastically fits the surface of the forging. The coupling agent drips precisely from the liquid outlet at the top of the rectangular groove 372 through the coupling agent guide channel 373. With the rotation driven by the servo motor 6, the coupling agent is evenly covered. The rectangular groove 372 can prevent the coupling agent from flowing into the untested area. After the test, the coupling agent scraping part 376 can scrape off the diffused coupling agent and guide it into the adapted and connected coupling agent waste liquid collection tank 377. The probe wiping part 374 adapts to the ultrasonic flaw detection probe 310 through the deformation of the internal air cavity 375 to detect the probe contour and clean the residual coupling agent on its surface. The whole process realizes precise application of coupling agent, prevention of contamination and probe cleaning, ensuring the continuity of detection, the accuracy of defect identification and the consistency of repeated detection.

[0026] Please see Figures 2-5 The magnetic connector 39 includes a vertical rod 391 with a male magnet block fixedly installed at the bottom of the detection control screw block 38, and a female magnet block 392 with a hole magnetically connected to the bottom of the vertical rod 391 with the male magnet block; a limit plate insertion rod 4 is fixedly installed at the output end of the limit electric telescopic rod 2, and the limit plate insertion rod 4 is adapted to the hole on the female magnet block 392 with a hole; an adjustment electric telescopic rod 393 is fixedly installed at the bottom of the female magnet block 392 with a hole, and the adjustment electric telescopic rod 393 is fixedly connected to the ultrasonic flaw detection probe 310.

[0027] During operation, the vertical rod 391 with the male magnet and the female magnet 392 with the hole are fixed by magnetic adsorption and move synchronously with the detection control screw 38. During the application of coupling agent, the adjusting electric telescopic rod 393 shortens to move the ultrasonic flaw detection probe 310 away from the forging to avoid interference with the application. During flaw detection, the adjusting electric telescopic rod 393 precisely controls the contact pressure between the probe and the detection surface. When the probe needs to be cleaned, the limiting electric telescopic rod 2 drives the insertion rod 4 with the limiting plate to be inserted into the adapter hole of the female magnet 392 with the hole, so that the vertical rod 391 with the male magnet and the female magnet 392 with the hole are separated, making it convenient for the coating part 37 to wipe the probe. The whole process achieves stable connection, flexible adjustment and cleaning coordination of the probe, ensuring constant detection pressure and smooth process, and improving detection accuracy and consistency.

[0028] Please see Figure 1 , Figure 4 and Figure 6 A coupling agent holding structure 5 is provided on the serpentine rod 361. The coupling agent holding structure 5 includes a coupling agent holding bottle 51 fixedly installed on the serpentine rod 361. A coupling agent delivery tube 52 is fixedly installed on the top of the coupling agent holding bottle 51. A corrugated tube 53 is fixedly installed on the lower end of the coupling agent delivery tube 52. A liquid pump 54 is fixedly installed on the lower end of the corrugated tube 53. The output end of the liquid pump 54 is fixedly installed at the inlet port of the coupling agent flow channel 373.

[0029] In the coupling agent holding structure 5, the coupling agent holding bottle 51 stores the coupling agent. When working, the pump 54 is started, and the coupling agent is drawn through the coupling agent guide tube 52 and the corrugated tube 53 that can be moved with the device. Finally, the pump 54 accurately delivers it to the inlet port of the coupling agent guide channel 373. This structure provides a continuous and stable supply of coupling agent to the applicator 37, avoiding problems such as uneven thickness and missed coating caused by manual addition. Together with the servo motor 6 and the applicator 37, it realizes the precise guidance and uniform coverage of the coupling agent, ensuring the effective transmission of ultrasonic waves and laying the foundation for improving the accuracy of defect identification.

[0030] Please see Figure 4 , Figure 6 , Figure 7 and Figure 8 A servo motor 6 is provided at the bottom of the sleeve 31. The output end of the servo motor 6 is fixedly connected to the sleeve 31. The distance between the center line of the outlet port of the coupling agent guide channel 373 and the center line of the servo motor 6 is equal to the distance between the center line of the ultrasonic flaw detection probe 310 and the center line of the servo motor 6. A positioning structure 7 is provided at the bottom of the servo motor 6.

[0031] During operation, the positioning structure 7 at the bottom of the servo motor 6 first completes the coaxial positioning of the device and the forging, so that the center line of the servo motor 6 coincides with the center line of the forging. Then, the servo motor 6 starts, and its output end drives the fixedly connected sleeve 31 to rotate at a constant speed. Since the liquid outlet of the coupling agent guide channel 373 is equal to the distance from the ultrasonic flaw detection probe 310 to the center line of the servo motor 6, the coupling agent can be evenly applied and accurately connected with the probe flaw detection during the rotation. This ensures the uniformity of the coupling agent coverage and keeps the probe moving at a constant speed. Together with other components, it solves the instability problem of manual operation, improves the continuity of detection, the accuracy of defect identification, and the consistency of repeated detection.

[0032] Please see Figure 1 , Figure 2 and Figure 4 The positioning structure 7 includes a threaded positioning shaft 71 fixedly installed at the bottom of the servo motor 6. A lifting block 72 is threadedly connected to the threaded positioning shaft 71. A rotating cylinder 73 is rotatably connected to the outside of the lifting block 72. Several inclined support rods 74 are rotatably connected to the rotating cylinder 73. A base 75 is fixedly installed at the bottom of the threaded positioning shaft 71. Several arc-shaped block abutments 76 are slidably connected to the base 75. The lower ends of the inclined support rods 74 are rotatably connected to the arc-shaped block abutments 76.

[0033] During operation, the threaded positioning shaft 71 is first inserted into the inner ring of the annular titanium alloy forging. The lifting block 72, which is threaded onto the threaded positioning shaft 71, is then manually rotated. The lifting block 72 drives the rotating cylinder 73, which is rotatably connected to the outside, to rise and fall synchronously. This causes the inclined support rod 74 on the rotating cylinder 73 to tilt and rotate, thereby pushing the arc-shaped block abutment rod 76, which is rotatably connected to the lower end of the inclined support rod 74, to slide on the base 75. Finally, the arc-shaped block abutment rod 76 tightly abuts against the inner circular surface of the forging, achieving the alignment of the threaded positioning shaft 71 with the axis of the forging. This structure can accurately achieve coaxial positioning of the device and the forging, providing a foundation for the uniform application of coupling agent and stable flaw detection by the ultrasonic flaw detection probe 310. It avoids detection blind spots or accuracy reduction caused by positioning deviations, ensuring the smooth implementation of layer-by-layer detection.

[0034] In practical use, the working principle of this invention is as follows: When flaw detection is required on the top surface of annular titanium alloy forgings, the entire device is first moved flexibly to the outside of the annular titanium alloy forging using the bracket with universal wheels 1. The threaded positioning shaft 71 is then precisely inserted into the inner ring of the forging. Subsequently, the lifting block 72 is manually rotated. As the lifting block 72 moves up and down along the threaded positioning shaft 71, it drives the inclined support rod 74 to rotate accordingly, thereby pushing the arc-shaped block abutment rod 76 to move horizontally within the base 75. Finally, the arc-shaped block abutment rod 76 is tightly pressed against the inner circular surface of the forging. At this time, the axis of the threaded positioning shaft 71 is completely coincident with the axis of the forging. At the same time, the rubber block 371 is elastically fitted to the top surface of the forging under the action of the elastic connector 36. This completes the precise installation and positioning of the entire device.

[0035] In the initial state (the limit plate insert 4 on the limit electric telescopic rod 2 is not inserted into the hole of the female magnet block 392 with holes), the adjustment electric telescopic rod 393 is first shortened to keep the ultrasonic flaw detection probe 310 separated from the top surface of the forging, avoiding damage caused by friction between the probe and the forging during the initial movement or affecting the subsequent coating operation; then the two output ends of the dual-axis motor 32 are controlled to rotate in opposite directions at the same frequency, driving the coating control screw 33 and the detection control screw 34 to rotate synchronously in opposite directions, thereby driving the coating control screw block 35 and the detection control screw block 38 to move away from each other, and finally making the coating part 37 and the ultrasonic flaw detection probe 310 move synchronously to the outermost edge of the top surface of the annular forging. The detection path design from the outside to the inside effectively avoids the problem of inaccurate connection when manually segmenting the detection, laying the foundation for realizing full-area detection without dead angles.

[0036] After the pump 54 is started, the couplant in the couplant container 51 is precisely delivered to the couplant channel 373 through the couplant transport tube 52 and the corrugated tube 53. Finally, it drips evenly from the outlet port onto the edge of the top surface of the forging. At the same time, the servo motor 6 starts and drives the sleeve 31 and the applicator 37 to rotate slowly 360 degrees at a uniform speed (the rotation angle can be precisely controlled by installing a rotary encoder on the servo motor 6). This makes the couplant evenly cover the outermost ring of the top surface of the forging, completely solving the problems of uneven couplant thickness and missed application when applied manually. It ensures that there is no air gap between the probe and the detection surface, ensuring effective ultrasonic wave transmission. Meanwhile, the rectangular groove 372 on the rubber block 371 is in close contact with the top surface of the forging during rotation, which can effectively prevent the couplant from flowing into the undetected area (inner ring), avoiding contamination of the undetected area and affecting the subsequent detection accuracy.

[0037] After the outermost ring of coupling agent is evenly covered on the top surface of the forging, the adjusting electric telescopic rod 393 is extended to precisely align the detection end of the ultrasonic flaw detector probe 310 with the area coated with coupling agent. Simultaneously, the liquid pump 54 is turned off to stop the liquid supply. Then, the servo motor 6 is controlled to rotate slowly and uniformly again, driving the ultrasonic flaw detector probe 310 to perform comprehensive flaw detection along the ring area. Compared to manual hand-held probe operation, the adjusting electric telescopic rod 393 can precisely control the contact pressure between the probe and the detection surface, while the servo motor 6 ensures a constant probe movement speed. This effectively solves the problem of inconsistent repeated test results caused by large differences in hand-held force and movement rhythm during manual operation, improving the standardization of test data.

[0038] After the outermost ring flaw detection is completed, the movement of the ultrasonic flaw detection probe 310 during the detection process will push the coupling agent to spread in all directions, which can easily contaminate the undetected areas. At the same time, the coupling agent remaining on the probe surface will affect the accuracy of subsequent detection. At this time, the control adjustment electric telescopic rod 393 is shortened so that the detection end of the ultrasonic flaw detection probe 310 is slightly lower than the top of the probe wiping part 374. Then, the control limit electric telescopic rod 2 is extended (to ensure that the insertion rod 4 with the limit plate is accurately inserted into the hole of the female magnet block 392 with the hole, positioning assistance can be provided by a laser beam sensor or a vision sensor. For example, the transmitting end of the laser beam sensor is installed at the end of the insertion rod 4 with the limit plate, and the receiving end of the laser beam sensor is installed on the axis of the insertion rod 4 with the limit plate using a bracket, without affecting the limit plate). Insertion of the insertion rod 4. A pressure sensor can be installed on the side of the insertion rod 4 with the limit plate near the female magnet block 392 with the hole to monitor the insertion depth in real time to ensure accurate positioning. The servo motor 6 is started to rotate, driving the coating part 37 and the vertical rod 391 with the male magnet block to rotate synchronously. When the vertical rod 391 with the male magnet block rotates, it separates from the female magnet block 392 with the hole. During the rotation of the coating part 37, the coupling agent scraping part 376 can scrape and collect the coupling agent that has diffused to the undetected area into the coupling agent waste liquid collection tank 377 to avoid coupling agent contamination affecting the accuracy of subsequent detection. At the same time, the air cavity 375 inside the probe wiping part 374 is filled with an appropriate amount of gas to ensure that the wiping part can adapt and deform when the probe passes by, wiping the coupling agent remaining at the detection end of the ultrasonic flaw detection probe 310. Users can determine whether further wiping is needed by observing whether there is any residual coupling agent on the unwiped part of the top surface of the forging and the probe surface (the rotation degree of the servo motor 6 is controlled to be an integer multiple of 360 degrees to ensure that the female magnet block 392 with holes and the vertical rod 391 with male magnet block can be accurately reconnected).

[0039] After the outermost area is inspected and cleaned, the dual-axis motor 32 is controlled to rotate in the opposite direction, causing the coating part 37 and the ultrasonic flaw detection probe 310 to move inward toward each other to the preset next inspection position. After the position is positioned, the above-mentioned process of precise application of coupling agent, probe contact inspection, wiping of coupling agent on the uninspected parts of the top surface of the annular titanium alloy forging, and cleaning of the probe inspection end is repeated. Through the layered inspection method from the outside to the inside, combined with the coaxial positioning design and stable operation mechanism of the device, problems such as missed coating, uneven pressure, and speed fluctuations during manual inspection are effectively avoided, ensuring that every area of ​​the top surface of the entire annular titanium alloy forging can be inspected in a standardized and high-precision manner until the comprehensive flaw detection operation of the top surface of the forging is completed.

[0040] The above are merely specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on the present invention to solve essentially the same technical problems and achieve essentially the same technical effects are all covered within the protection scope of the present invention.

Claims

1. An auxiliary device for flaw detection of titanium alloy forgings, comprising a bracket with casters (1) and a limiting electric telescopic rod (2) fixedly mounted on the bracket with casters (1), characterized in that: The bottom of the bracket with universal wheels (1) is provided with a smear detection structure (3); The coating detection structure (3) includes a sleeve (31) rotatably connected to the bottom of a bracket (1) with casters. A dual-axis motor (32) is fixedly installed at the center inside the sleeve (31). A coating control screw (33) and a detection control screw (34) are fixedly installed at the two output ends of the dual-axis motor (32). A coating control screw block (35) is threadedly connected to the outer side of the coating control screw (33). An elastic connector (36) penetrating the sleeve (31) is fixedly installed at the bottom of the coating control screw block (35). A coating component (37) is provided below the elastic connector (36). A detection control screw block (38) is threadedly connected to the outer side of the detection control screw (34). A magnetic connector (39) is provided at the bottom of the detection control screw block (38). An ultrasonic flaw detection probe (310) is provided at the bottom of the magnetic connector (39).

2. The auxiliary device for flaw detection of titanium alloy forgings according to claim 1, characterized in that: The elastic connector (36) includes a serpentine rod (361) fixedly installed at the bottom of the coating control screw block (35), a telescopic spring (362) fixedly installed inside the serpentine rod (361), and a movable rod (363) slidably connected to the serpentine rod (361) fixedly installed at the lower end of the telescopic spring (362).

3. The auxiliary device for flaw detection of titanium alloy forgings according to claim 1, characterized in that: The applicator (37) includes a rubber block (371) fixedly installed at the lower end of the movable rod (363). A rectangular groove (372) is provided in the corner area of ​​the rubber block (371). A coupling agent flow channel (373) is provided inside the rubber block (371). The liquid outlet of the coupling agent flow channel (373) is located at the top of the rectangular groove (372). A probe wiping part (374) is provided at the top of the rubber block (371). An air chamber (375) is provided inside the probe wiping part (374). A coupling agent scraping part (376) is provided on the side of the rubber block (371). A coupling agent waste liquid collection tank (377) is also provided inside the rubber block (371). The coupling agent waste liquid collection tank (377) is located on one side of the coupling agent scraping part (376) and is adapted to and connected to the scraping surface of the coupling agent scraping part (376).

4. The auxiliary device for flaw detection of titanium alloy forgings according to claim 1, characterized in that: The magnetic connector (39) includes a vertical rod (391) with a male magnet fixedly installed at the bottom of the detection control screw block (38), and a female magnet (392) with a hole is magnetically connected to the bottom of the vertical rod (391); a rod with a limiting plate (4) is fixedly installed at the output end of the limiting electric telescopic rod (2), and the rod with the limiting plate (4) is adapted to the hole on the female magnet (392); an adjusting electric telescopic rod (393) is fixedly installed at the bottom of the female magnet (392), and the adjusting electric telescopic rod (393) is fixedly connected to the ultrasonic flaw detector probe (310).

5. The auxiliary device for flaw detection of titanium alloy forgings according to claim 2, characterized in that: The serpentine rod (361) is provided with a coupling agent holding structure (5), which includes a coupling agent holding bottle (51) fixedly installed on the serpentine rod (361). A coupling agent delivery tube (52) is fixedly installed on the top of the coupling agent holding bottle (51). A corrugated pipe (53) is fixedly installed at the lower end of the coupling agent delivery tube (52). A liquid pump (54) is fixedly installed at the lower end of the corrugated pipe (53). The output end of the liquid pump (54) is fixedly installed at the inlet port of the coupling agent flow channel (373).

6. The auxiliary device for flaw detection of titanium alloy forgings according to claim 3, characterized in that: The bottom of the sleeve (31) is provided with a servo motor (6), the output end of the servo motor (6) is fixedly connected to the sleeve (31), the distance between the center line of the outlet port of the coupling agent guide channel (373) and the center line of the servo motor (6) is equal to the distance between the center line of the ultrasonic flaw detector probe (310) and the center line of the servo motor (6); the bottom of the servo motor (6) is provided with a positioning structure (7).

7. The auxiliary device for flaw detection of titanium alloy forgings according to claim 6, characterized in that: The positioning structure (7) includes a threaded positioning shaft (71) fixedly installed at the bottom of the servo motor (6). A lifting block (72) is threadedly connected to the threaded positioning shaft (71). A rotating cylinder (73) is rotatably connected to the outside of the lifting block (72). Several inclined support rods (74) are rotatably connected to the rotating cylinder (73). A base (75) is fixedly installed at the bottom of the threaded positioning shaft (71). Several arc-shaped block abutments (76) are slidably connected to the base (75). The lower end of the inclined support rod (74) is rotatably connected to the arc-shaped block abutments (76).

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