Flaw detection support and ultrasonic flaw detection experimental instrument

Abstract

The utility model discloses a flaw detection support and an ultrasonic flaw detection experimental instrument.The flaw detection support comprises a support body, a sliding rail, a probe mounting base and a driving part, the sliding rail is arranged on the support body, the probe mounting base is slidably connected with the sliding rail, an ultrasonic probe is arranged on the probe mounting base, and the driving part is in driving connection with the probe mounting base; the driving part is used for enabling the probe mounting seat to slide along the sliding rail, so that the ultrasonic probe moves along the sliding rail. The ultrasonic probe is driven by the driving piece to move on the sliding rail to execute flaw detection, automatic scanning detection on the surface of the workpiece is achieved, operation is easy, use is convenient, and the flaw detection quality and efficiency of the workpiece can be effectively improved.

Description

Technical Field

[0001] This application relates to the field of ultrasonic flaw detection technology, and more specifically, to a flaw detection bracket and an ultrasonic flaw detection experimental instrument. Background Technology

[0002] Ultrasonic testing is a method of inspecting defects in parts by utilizing the characteristic that ultrasonic energy can penetrate deep into metal materials and be reflected at the interface edge when it enters another cross section. When ultrasonic waves travel from the surface of a part through an ultrasonic probe into the interior of the metal, they are reflected when they encounter defects or the bottom surface of the part, forming pulse waveforms on a fluorescent screen. The location and size of the defects are determined based on these pulse waveforms.

[0003] Currently, existing ultrasonic flaw detection equipment is mainly manual, using a handheld portable ultrasonic flaw detector and ultrasonic probe to inspect the workpiece. Its drawbacks are that this method is heavily influenced by the user's experience in flaw detection, easily leading to significant measurement deviations, and also has low efficiency.

[0004] Therefore, existing technologies need to be improved. Utility Model Content

[0005] The purpose of this application is to provide a flaw detection bracket and an ultrasonic flaw detection test instrument, which aims to solve the technical problem that the ultrasonic flaw detection test instrument is greatly affected by manual flaw detection experience in the prior art.

[0006] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0007] In a first aspect, this application provides a flaw detection bracket, comprising:

[0008] Support body;

[0009] A slide rail is disposed on the bracket body;

[0010] An ultrasonic probe is mounted on a probe mounting base that is slidably connected to a slide rail.

[0011] A driving component is provided, which is driven to the probe mounting base. The driving component is used to allow the probe mounting base to slide along the slide rail, thereby moving the ultrasonic probe along the slide rail.

[0012] In one embodiment, the drive includes:

[0013] Drive motor;

[0014] A coupling that is connected to the drive shaft of the drive motor;

[0015] A lead screw, which is connected to the coupling;

[0016] A nut, which is fitted onto the lead screw and threadedly connected to the lead screw;

[0017] A fixing part is provided on the nut, and the fixing part is used to connect with the probe mounting base.

[0018] In one embodiment, the probe mounting base includes:

[0019] first ontology;

[0020] A first connecting part is disposed on the first body and is used to connect with the fixing part of the driving member;

[0021] A sliding cavity is disposed on the first body, and the sliding cavity is used to be sleeved on the slide rail and slidably connected to the slide rail;

[0022] The mounting part is disposed on the first body, and the ultrasonic probe is installed in the mounting part;

[0023] A fixing screw is provided on the mounting part and is used to fix and connect with the ultrasonic probe.

[0024] In one embodiment, the mounting portion includes:

[0025] A mounting base plate is disposed on the first body;

[0026] A first side plate extends downward from the mounting base plate and is located on the left side of the mounting base plate;

[0027] The second side plate extends downward from the mounting base plate and is located on the right side of the mounting base plate;

[0028] The third side plate extends downward from the mounting base plate and is located between the first side plate and the second side plate. The third side plate, the mounting base plate, and the second side plate are connected in sequence to form a U-shaped groove. The ultrasonic probe is disposed in the U-shaped groove. The fixing screw passes through the first side plate and the third side plate and abuts against the ultrasonic probe.

[0029] In one embodiment, the fixing screw includes:

[0030] The screw portion passes through the first side plate and the third side plate, and is threadedly connected to the first side plate and the third side plate respectively;

[0031] The handle portion is located on the side of the screw portion away from the ultrasonic probe.

[0032] In one embodiment, the handle portion is provided with a pull ring.

[0033] In one embodiment, the support body includes:

[0034] Left support leg, which is connected to the left end of the slide rail;

[0035] The right support leg is connected to the right end of the slide rail.

[0036] In one embodiment, a caliper assembly is also included, the caliper assembly comprising:

[0037] The main ruler is fixed at one end to the left support leg and at the other end to the right support leg. The main ruler is provided with scale lines.

[0038] A sliding auxiliary ruler is slidably connected to the main ruler and is connected to the nut of the driving component.

[0039] Secondly, an ultrasonic flaw detection test instrument includes the flaw detection bracket as described in the above embodiment.

[0040] In one implementation, it further includes:

[0041] An ultrasonic probe, wherein the ultrasonic probe is disposed on the probe mounting base, and the ultrasonic probe includes a dual-crystal straight probe;

[0042] A signal generator, which is connected to the ultrasonic probe;

[0043] A digital oscilloscope, which is connected to the ultrasonic probe.

[0044] The beneficial effects of the flaw detection bracket and ultrasonic flaw detection test instrument provided in this application are at least as follows:

[0045] This application discloses a flaw detection bracket and an ultrasonic flaw detection instrument. The flaw detection bracket includes a bracket body, a slide rail, a probe mounting base, and a driving component. The slide rail is disposed on the bracket body, and the probe mounting base is slidably connected to the slide rail. An ultrasonic probe is mounted on the probe mounting base. The driving component is driven to the probe mounting base, and the driving component is used to slide the probe mounting base along the slide rail, thereby moving the ultrasonic probe along the slide rail. This application uses a driving component to drive the ultrasonic probe to move on the slide rail to perform flaw detection inspection, achieving automated scanning and detection of the workpiece surface. It is simple to operate, convenient to use, and can effectively improve the quality and efficiency of workpiece flaw detection. Attached Figure Description

[0046] To more clearly illustrate the technical solutions in the embodiments of this application, 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 this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0047] Figure 1 This is a schematic diagram of the structure of the flaw detection bracket provided in the embodiments of this application;

[0048] Figure 2 A schematic diagram of a specific embodiment of the flaw detection bracket provided in this application;

[0049] Figure 3 A schematic diagram of a specific embodiment of the probe mounting base provided in this application;

[0050] Figure 4 This is a schematic diagram of the ultrasonic flaw detection instrument provided in the embodiments of this application.

[0051] The following are the labeling elements in the figure:

[0052] 100. Support body; 200. Slide rail; 300. Probe mounting base; 400. Drive component; 500. Caliper assembly; 600. Ultrasonic probe; 700. Signal generator; 800. Digital oscilloscope; 110. Left support foot; 120. Right support foot; 310. First body; 320. First connecting part; 330. Sliding cavity; 340. Mounting part; 350. Fixing screw; 341. Mounting base plate; 342. First side plate; 343. Second side plate; 344. Third side plate; 345. Baffle; 351. Screw part; 352. Handle part; 410. Drive motor; 420. Coupling; 430. Lead screw; 440. Nut; 450. Fixing part; 510. Main scale; 520. Sliding auxiliary scale. Detailed Implementation

[0053] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0054] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it may be directly or indirectly located on that other component. When a component is referred to as "connected to" another component, it may be directly or indirectly connected to that other component. The terms "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate orientations or positions based on the accompanying drawings, and are for ease of description only, and should not be construed as limiting the technical solution. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. "A plurality" means two or more, unless otherwise explicitly defined.

[0055] Example 1:

[0056] Please see Figure 1 This embodiment provides a flaw detection bracket, which includes: a bracket body 100, a slide rail 200, a probe mounting base 300, and a driving component 400. The slide rail 200 is disposed on the bracket body 100, the probe mounting base 300 is slidably connected to the slide rail 200, an ultrasonic probe 600 is disposed on the probe mounting base 300, and the driving component 400 is drivenly connected to the probe mounting base 300. The driving component 400 is used to slide the probe mounting base 300 along the slide rail 200, so that the ultrasonic probe 600 moves along the slide rail 200.

[0057] In this embodiment, the driving component 400 can drive the probe mounting base 300 to move along the slide rail 200. An ultrasonic probe 600 is mounted on the probe mounting base 300, meaning the driving component 400 can drive the ultrasonic probe 600 to move along the slide rail 200. During flaw detection, the workpiece can be placed below the slide rail 200, and then the driving component 400 drives the ultrasonic probe 600 to move above the workpiece, so that the ultrasonic probe 600 can detect internal defects in the workpiece using the reflection of ultrasonic waves.

[0058] Therefore, in this embodiment, the ultrasonic probe 600 is driven to move on the slide rail 200 by the driving component 400 to perform flaw detection inspection, thereby realizing automated scanning and detection of the workpiece surface. It is simple to operate, convenient to use, and can effectively improve the quality and efficiency of workpiece flaw detection.

[0059] Specifically, please refer to Figure 1The driving component 400 includes: a drive motor 410, a coupling 420, a lead screw 430, a nut 440, and a fixing part 450. The coupling 420 is connected to the drive shaft of the drive motor 410, the lead screw 430 is connected to the coupling 420, the nut 440 is sleeved on the lead screw 430 and threadedly connected to the lead screw 430, and the fixing part 450 is disposed on the nut 440. The fixing part 450 is used to connect with the probe mounting base 300. For example, the fixing part 450 can be fixedly connected to the nut 440 by bolts.

[0060] In this embodiment, the drive motor 410 is driven to the lead screw 430 via the coupling 420. The lead screw 430 is threaded to the nut 440. When the drive motor 410 is working, it can drive the nut 440 to move linearly along the lead screw 430, thereby driving the ultrasonic probe 600 to move linearly. The movement is reliable, stable, and efficient.

[0061] Specifically, please refer to Figure 2 The probe mounting base 300 includes: a first body 310, a first connecting part 320, a sliding cavity 330, a mounting part 340, and a fixing screw 350. The first connecting part 320 is disposed on the first body 310 and is used to connect with the fixing part 450 of the driving member 400. The sliding cavity 330 is disposed on the first body 310 and is used to be sleeved on the slide rail 200 and slidably connected with the slide rail 200. The mounting part 340 is disposed on the first body 310 and an ultrasonic probe 600 is installed in the mounting part 340. The fixing screw 350 is disposed on the mounting part 340 and is used to fixally connect with the ultrasonic probe 600.

[0062] In this embodiment, the first body 310 is connected to the fixing part 450 on the nut 440 via the first connecting part 320. That is, the probe mounting base 300 is fixed on the fixing part 450 via the first connecting part 320. The sliding cavity 330 is used to slide with the slide rail 200. When the drive motor 410 drives the nut 440 to move linearly, the nut 440 can drive the probe mounting base 300 to move directionally along the slide rail 200. The mounting part 340 is provided with a fixing screw 350. For example, the ultrasonic probe 600 can be placed in the mounting part 340, and then the fixing screw 350 abuts against the ultrasonic probe 600, so that the ultrasonic probe 600 is fixed in the mounting part 340.

[0063] Specifically, please refer to Figure 2The mounting part 340 includes a mounting base plate 341, a first side plate 342, a second side plate 343, and a third side plate 344. The mounting base plate 341 is disposed on the first body 310. The first side plate 342 extends downward from the mounting base plate 341 and is located to the left of the mounting base plate 341. The second side plate 343 extends downward from the mounting base plate 341 and is located to the right of the mounting base plate 341. The third side plate 344 extends downward from the mounting base plate 341 and is located between the first side plate 342 and the second side plate 343. The third side plate 344, the mounting base plate 341, and the second side plate 343 are sequentially connected to form a U-shaped groove. An ultrasonic probe 600 is disposed in the U-shaped groove. A fixing screw 350 passes through the first side plate 342 and the third side plate 344 and abuts against the ultrasonic probe 600.

[0064] In this embodiment, the mounting part 340 consists of a mounting base plate 341, a first side plate 342, a second side plate 343, and a third side plate 344. The first side plate 342, the second side plate 343, and the third side plate 344 are all mounted on the mounting base plate 341. The third side plate 344, the mounting base plate 341, and the second side plate 343 are connected in sequence to form a U-shaped groove for mounting the ultrasonic probe 600. The first side plate 342 is located to the left of the third side plate 344. The fixing screw 350 can pass through the first side plate 342 and the third side plate 344 and fix the ultrasonic probe 600 in the U-shaped groove. When it is necessary to disassemble or replace the ultrasonic probe 600, simply loosen the fixing screw 350. Disassembly and assembly are convenient and easy to implement.

[0065] For example, please see Figure 3 The bottom of the second side plate 343 is provided with a baffle 345, which connects to the second side plate 343 to form a slot. When installing the ultrasonic probe 600, the ultrasonic probe 600 can be placed in this slot. The baffle 345 can provide support for the ultrasonic probe 600 and prevent it from falling. For example, the ultrasonic probe 600 can be placed between the second side plate 343 and the third side plate 344, and then placed on the baffle 345, and then fixed with the fixing screw 350 to install the ultrasonic probe 600 in the mounting part 340.

[0066] Specifically, please refer to Figure 2 The fixing screw 350 includes a screw part 351 and a handle part 352. The screw part 351 passes through the first side plate 342 and the third side plate 344, and the screw part 351 is threadedly connected to the first side plate 342 and the third side plate 344 respectively. The handle part 352 is located on the side of the screw part 351 away from the ultrasonic probe 600.

[0067] In this embodiment, the handle portion 352 is connected to the screw portion 351. The handle portion 352 is located at the end of the screw portion 351. The screw portion 351 is used to be threadedly connected to the first side plate 342 and the third side plate 344. When the screw portion 351 passes through the first side plate 342 and the third side plate 344, the screw portion 351 can abut against the ultrasonic probe 600 to fix the ultrasonic probe 600 in the U-shaped groove. The handle portion 352 can increase the torque and facilitate operation and control, so that the operator's hand can effectively rotate the screw to fix or loosen the ultrasonic probe 600.

[0068] Optionally, the handle portion 352 is provided with a pull ring. For example, the handle portion 352 is provided with a pull ring, which can provide a comfortable, easy-to-grip and force-applying position, allowing the operator to grip and apply rotational force more easily and stably.

[0069] Specifically, please refer to Figure 2 The support body 100 includes a left support leg 110 and a right support leg 120. The left support leg 110 is connected to the left end of the slide rail 200, and the right support leg 120 is connected to the right end of the slide rail 200. For example, one end of the slide rail 200 is connected to the left support leg 110, and the other end of the slide rail 200 is connected to the right support leg 120. One end of the lead screw 430 is also fixed to the left support leg 110, and the other end of the lead screw 430 is fixed to the right support leg 120. During the flaw detection process, the workpiece can be placed below the slide rail 200, so that the ultrasonic probe 600 can move linearly above the workpiece, thereby enabling the ultrasonic probe 600 to sample at certain distances and time intervals.

[0070] Specifically, please refer to Figure 1 The flaw detection bracket also includes a caliper assembly 500, which includes a main scale 510 and a sliding auxiliary scale 520. One end of the main scale 510 is fixed to the left support leg 110 and the other end is fixed to the right support leg 120. The main scale 510 is provided with scale lines. The sliding auxiliary scale 520 is slidably connected to the main scale 510 and is connected to the nut 440 of the drive component 400.

[0071] In this embodiment, during the movement of the ultrasonic probe 600, the nut 440 can drive the sliding scale 520 to move along the main scale 510, that is, the operator can observe the distance the ultrasonic probe 600 moves on the main scale 510 to assist in observing the movement of the ultrasonic probe 600.

[0072] Example 2:

[0073] Please see Figure 4Based on the aforementioned flaw detection bracket, this embodiment provides an ultrasonic flaw detection testing instrument, which includes the flaw detection bracket as described in the above embodiment. Therefore, this ultrasonic flaw detection testing instrument possesses all the technical features and beneficial effects of the aforementioned flaw detection bracket, which will not be elaborated further.

[0074] Specifically, please refer to Figure 4 The ultrasonic flaw detection test instrument also includes: an ultrasonic probe 600, a signal generator 700, and a digital oscilloscope 800. The ultrasonic probe 600 is mounted on the probe mounting base 300 and includes a dual-crystal straight probe. The signal generator 700 is connected to the ultrasonic probe 600, and the digital oscilloscope 800 is connected to the ultrasonic probe 600.

[0075] Ultrasonic probe 600: The electrical signal emitted by the signal generator 700 is converted into ultrasonic waves by the ultrasonic probe and emitted. The ultrasonic probe then converts the received ultrasonic echoes back into electrical signals, which are transmitted to the digital oscilloscope 800 for processing. For example, the ultrasonic probe 600 can be a dual-crystal straight probe with a frequency of 2.5MHz. When using ultrasonic waves for non-destructive testing, if the ultrasonic frequency is too low, the ultrasonic waves will not be able to penetrate; if the frequency is too high, the attenuation will be too great, making it difficult to detect reflected signals when the sample thickness is large. Therefore, selecting an ultrasonic probe 600 with an appropriate operating frequency is extremely important. For the testing of common materials (metals, plexiglass, ceramics, etc.), ultrasonic probes 600 with a frequency of 2MHz to 5MHz are usually used, so we chose a probe with an operating frequency of 2.5MHz. Compared to angle probes that emit transverse waves, straight probes that emit longitudinal waves are more suitable for defect detection in metals, and their data processing is also more convenient; compared to single-crystal straight probes, dual-crystal straight probes have stronger defect detection capabilities.

[0076] Signal generator 700: The signal generator 700 emits an electrical signal of a certain frequency to excite the ultrasonic probe to generate ultrasonic waves.

[0077] Digital Oscilloscope 800: Use the digital oscilloscope 800 to display the waveform of the reflected signal, so as to directly observe its waveform changes and record and store the waveform amplitude values ​​at different positions for subsequent data processing.

[0078] The subsequent data processing can be done using computers, which are mainly used to analyze and process the experimental results.

[0079] The working principle of this ultrasonic flaw detection instrument is as follows: The signal generator 700 emits an electrical signal with a set frequency consistent with the center working frequency of the dual-crystal straight probe. This signal is converted into ultrasonic waves of the same frequency by the dual-crystal straight probe and emitted. The ultrasonic waves are reflected when they encounter different medium surfaces within the workpiece. The dual-crystal straight probe then receives the ultrasonic waves reflected from the test block and converts them into electrical signals, which are displayed on the digital oscilloscope 800. The waveform data is saved to a USB flash drive on the digital oscilloscope 800 at certain time intervals. The waveform data is then calculated and analyzed by the data processing terminal to determine the defect depth. The defect depth is then input into a drawing program to create a 3D schematic diagram of the defect location and its distribution.

[0080] In this embodiment, the flaw detection bracket automatically uses flaw detection waveform data, that is, it automatically collects several waveform data through sampling. After data processing, the defect depth and defect location can be obtained. The defect location can be drawn into a 3D schematic diagram through a drawing program, which can intuitively show the location and distribution of the defect. This can greatly reduce the workload of manual measurement and reduce the error caused by manual operation.

[0081] The use of a drawing program to create a 3D schematic diagram of the defect location is considered existing technology and will not be elaborated further.

[0082] For example, for a specific material, the amplitude values ​​of a standard test block at different thicknesses are first measured. After data processing, a calibration function is fitted. This calibration function is also the attenuation model of the ultrasonic wave in that medium, and the undetermined coefficients can be used to obtain the attenuation coefficient of the ultrasonic wave. Then, the amplitude value of the defective test block is measured, and the amplitude value is substituted into the calibration function to obtain the defect depth. If a full-range measurement is performed, the location of the defect in the test block can be determined.

[0083] The initial data file exported by the digital oscilloscope 800 contains the vertical amplitude of each sampling point of the output waveform. A C++ program processes each sub-file in the folder one by one. For each sub-file, it retrieves the vertical positions of the peaks and troughs within the same period (represented by voltage values ​​in the digital oscilloscope 800) and calculates the amplitude value using the following formula:

[0084]

[0085] The calculated amplitude values ​​will be stored in a new list file, and then the average amplitude (actual amplitude) and its error for each thickness of the standard test block will be calculated.

[0086] To obtain the attenuation coefficient (in dB / m) of the ultrasonic wave in the standard test block, it is necessary to fit the average amplitude to the propagation distance (propagation distance = thickness * 2). We import the waveform data into Origin analysis software for analysis to obtain a calibration function. Then, we measure the amplitude value of the defective test block and substitute the amplitude value into the calibration function to obtain the defect depth.

[0087] In summary, this application discloses a flaw detection bracket and an ultrasonic flaw detection testing instrument. The flaw detection bracket includes a bracket body, a slide rail, a probe mounting base, and a driving component. The slide rail is disposed on the bracket body, and the probe mounting base is slidably connected to the slide rail. An ultrasonic probe is mounted on the probe mounting base. The driving component is driven to move the probe mounting base along the slide rail, thereby moving the ultrasonic probe along the slide rail. This application uses a driving component to drive the ultrasonic probe to move on the slide rail to perform flaw detection, achieving automated scanning and detection of the workpiece surface. It is simple to operate, convenient to use, and can effectively improve the quality and efficiency of workpiece flaw detection.

[0088] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A flaw detection bracket, characterized in that, include: Support body; A slide rail is disposed on the bracket body; An ultrasonic probe is mounted on a probe mounting base that is slidably connected to a slide rail. A driving component is provided, which is driven to the probe mounting base. The driving component is used to allow the probe mounting base to slide along the slide rail, thereby moving the ultrasonic probe along the slide rail.

2. The flaw detection bracket as described in claim 1, characterized in that, The driving component includes: Drive motor; A coupling that is connected to the drive shaft of the drive motor; A lead screw, which is connected to the coupling; A nut, which is fitted onto the lead screw and threadedly connected to the lead screw; A fixing part is provided on the nut, and the fixing part is used to connect with the probe mounting base.

3. The flaw detection bracket as described in claim 1, characterized in that, The probe mounting base includes: first ontology; A first connecting part is disposed on the first body and is used to connect with the fixing part of the driving member; A sliding cavity is disposed on the first body, and the sliding cavity is used to be sleeved on the slide rail and slidably connected to the slide rail; The mounting part is disposed on the first body, and the ultrasonic probe is installed in the mounting part; A fixing screw is provided on the mounting part and is used to fix and connect with the ultrasonic probe.

4. The flaw detection bracket as described in claim 3, characterized in that, The mounting part includes: A mounting base plate is disposed on the first body; A first side plate extends downward from the mounting base plate and is located on the left side of the mounting base plate; The second side plate extends downward from the mounting base plate and is located on the right side of the mounting base plate; The third side plate extends downward from the mounting base plate and is located between the first side plate and the second side plate. The third side plate, the mounting base plate, and the second side plate are connected in sequence to form a U-shaped groove. The ultrasonic probe is disposed in the U-shaped groove. The fixing screw passes through the first side plate and the third side plate and abuts against the ultrasonic probe.

5. The flaw detection bracket as described in claim 4, characterized in that, The fixing screw includes: The screw portion passes through the first side plate and the third side plate, and is threadedly connected to the first side plate and the third side plate respectively; The handle portion is located on the side of the screw portion away from the ultrasonic probe.

6. The flaw detection bracket as described in claim 5, characterized in that, The handle is provided with a pull ring.

7. The flaw detection bracket as described in claim 1, characterized in that, The support body includes: Left support leg, which is connected to the left end of the slide rail; The right support leg is connected to the right end of the slide rail.

8. The flaw detection bracket as described in claim 7, characterized in that, It also includes a caliper assembly, which comprises: The main ruler is fixed at one end to the left support leg and at the other end to the right support leg. The main ruler is provided with scale lines. A sliding auxiliary ruler is slidably connected to the main ruler and is connected to the nut of the driving component.

9. An ultrasonic flaw detection test instrument, characterized in that, Including the flaw detection bracket as described in any one of claims 1-8.

10. The ultrasonic flaw detection apparatus as described in claim 9, characterized in that, Also includes: An ultrasonic probe, wherein the ultrasonic probe is disposed on the probe mounting base, and the ultrasonic probe includes a dual-crystal straight probe; A signal generator, which is connected to the ultrasonic probe; A digital oscilloscope, which is connected to the ultrasonic probe.

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