A metal material nondestructive testing device

Abstract

The utility model discloses a kind of metal material nondestructive testing flaw detection devices, it is related to nondestructive testing technical field, including support, flaw detection structure, brushing structure and storage structure, support includes base and vertical plate, base is horizontally arranged, two vertical plates are vertically installed in base top surface length direction two sides;Flaw detection structure includes moving plate, probe component and moving assembly, moving plate is between two vertical plates.The metal material nondestructive testing flaw detection device is set in the probe component two sides of flaw detection structure brushing structure, can realize the cleaning of article to be detected position and detection auxiliary medium brushing operation in the movement process of probe component, the smearing of detection auxiliary medium and the movement detection of probe component synchronous, not only can shorten the period length of detection operation, but also can avoid detection operation to miss the effective time period after detection auxiliary medium smearing, help to improve the detection efficiency, detection quality and practical effect of metal material nondestructive testing flaw detection device.

Description

Technical Field

[0001] This utility model relates to the field of nondestructive testing technology, and more specifically, to a nondestructive testing device for metallic materials. Background Technology

[0002] Non-destructive testing of metallic materials is a technique that detects internal or surface defects (such as cracks, pores, inclusions, etc.) and structural characteristics of materials or components without damaging them.

[0003] Chinese utility model patent CN221100726U discloses a non-destructive testing device for metallic materials, including a base and an analyzer body. An electric slide rail is fixedly connected to the top of the base, and a movable plate is slidably connected to the electric slide rail. A fixed plate is fixedly connected to the top of the base away from the movable plate, and a bracket is fixedly connected to the top of the base. This technical solution achieves stable clamping of irregular materials through a hydraulic piston clamping rod and utilizes an electric push rod and pulley system to achieve material rotation and movement of the detection head. This improves testing flexibility, enables stable clamping and omnidirectional testing of irregularly shaped metallic materials, and enhances the applicability and efficiency of the testing.

[0004] Currently, most common non-destructive testing devices for metallic materials, as disclosed in the above technical solutions, require the use of auxiliary testing media. The flaw detection operation and the application of the auxiliary testing media are performed separately. This not only prolongs the detection cycle of metallic material flaw detection operations and reduces detection efficiency, but also makes the auxiliary testing media, when it is liquid or gel-like, susceptible to contamination due to prolonged contact with the atmosphere. This can lead to impurities mixed in the auxiliary media, and in severe cases, it can cause the auxiliary media to dry out, separate, or run off, affecting the uniformity of the auxiliary media and thus impacting the detection quality. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide a non-destructive testing device for metal materials, which integrates a device for applying an auxiliary testing medium into a moving detection structure. The auxiliary testing medium is applied during the movement of the detection component, which effectively shortens the testing operation cycle, reduces the risk of problems with the auxiliary testing medium, and helps to improve the testing effect and enhance the practicality of the device.

[0006] To achieve the above objectives, this utility model provides a non-destructive testing device for metallic materials, comprising: The bracket includes a horizontally arranged base and vertically installed on both sides of the top surface of the base along its length. The flaw detection structure includes a movable plate located between the two vertical plates, a probe component installed at the bottom of the movable plate, and a movable assembly for driving the movable plate to move laterally. Two coating structures are symmetrically installed at the bottom of the movable plate along its length. Each coating structure includes an electric push rod installed at the bottom of the movable plate, a movable plate installed at the bottom of the electric push rod, and a dust suction head, a discharge nozzle, and a paint brush installed vertically at the bottom of the movable plate and arranged in a straight line along the length of the movable plate. The discharge nozzle is located between the dust suction head and the paint brush, and the paint brush is located on the side closer to the probe component. The storage structure includes a fixed base for mounting the top of the movable plate, an exhaust fan mounted on the bottom of the movable plate and connected to the dust suction head, and a feeding assembly mounted in the fixed base and connected to the discharge nozzle. The fixed base is provided with a storage chamber for storing detection auxiliary media and a dust collection chamber for storing dust. The other end of the exhaust fan extends to the dust collection chamber, and the other end of the feeding assembly is connected to the storage chamber. During the moving plate process, the brushing structure needs to work with the storage structure to achieve cleaning of the surface of the item and application of the auxiliary testing medium.

[0007] Furthermore, the feeding assembly includes a drive pump installed in the fixed base and communicating with the storage chamber, a flow valve installed at the bottom of the moving plate and communicating with the other end of the drive pump, and a guide pipe installed at the other end of the flow valve and communicating with the top of the discharge nozzle.

[0008] Furthermore, the storage chamber is located in the middle of the fixed base, the dust collection chamber is arranged in a ring shape and is located outside the storage chamber, and two cleaning ports communicating with the dust collection chamber are opened on the outside of the fixed base, and a door adapted to the size of the cleaning port is hinged on the fixed base.

[0009] Furthermore, a feed pipe communicating with the storage chamber is fixedly connected to the top of the fixed base, and an end cap is detachably installed on the top of the feed pipe.

[0010] Furthermore, the paint brush is arc-shaped, and the length of the paint brush is greater than the outer diameter of the probe component.

[0011] Furthermore, the moving component includes a threaded rod rotatably mounted between the two upright plates and threadedly connected to the moving plate, a driving component mounted on the upright plate and fixedly connected to the threaded rod, and a smooth rod fixedly mounted between the two upright plates and slidably connected to the moving plate, wherein the smooth rod and the threaded rod are symmetrical in position.

[0012] Furthermore, the non-destructive testing device for metallic materials also includes: The clamping structure includes several actuators vertically mounted on the top of the base, a support plate mounted on the top of the actuators, clamps slidably mounted on both sides of the top surface of the support plate in the width direction, and a push assembly mounted on the bottom of the support plate for driving the clamps to move.

[0013] Furthermore, the pushing component includes several connecting rods symmetrically installed on opposite sides of the two clamping plates, several threaded sleeves rotatably installed on the bottom of the bearing plate and threadedly connected to the horizontal section of the connecting rods, and a transmission component installed on the bottom of the bearing plate for driving the threaded sleeves to rotate. The connecting rods are U-shaped, and the outer periphery of the horizontal section of the connecting rod opposite to the clamping plate is provided with external threads. The inner side of the threaded sleeve is provided with internal threads adapted to the external threads. A rotating seat for rotatably installing the threaded sleeves is installed on the bottom of the bearing plate.

[0014] Furthermore, the transmission assembly includes a sprocket mounted on the outside of the threaded sleeve, a chain fitted on the outside of the sprocket, and a double-headed motor mounted on the bottom of the support plate for driving any set of the threaded sleeves to rotate.

[0015] Furthermore, a number of limiting sliders are installed at the bottom of the clamping plate, and a limiting groove is provided on the top surface of the bearing plate to slide and adapt to the limiting sliders.

[0016] Compared with the prior art, this utility model has the following advantages and effects: 1. The non-destructive testing device for metal materials in this utility model has a coating structure on both sides of the probe component of the testing structure. This structure can clean the area to be tested and apply the auxiliary testing medium during the movement of the probe component. The application of the auxiliary testing medium is synchronized with the movement of the probe component. This not only shortens the cycle time of the testing operation, but also prevents the testing operation from missing the effective time period after the auxiliary testing medium is applied. It also avoids phenomena such as drying, layering, and loss of the auxiliary testing medium after application, which helps to improve the testing efficiency, testing quality, and practical effect of the non-destructive testing device for metal materials.

[0017] 2. The non-destructive testing device for metal materials in this utility model places the object to be tested on the carrier plate. The clamping plate in the clamping structure can work with the pushing component to clamp the object and keep the object stable. The actuator can also adjust the height of the carrier plate so that objects of different heights can be brought close to or attached to the probe component, so as to realize the detection of objects of different heights and improve the applicability of the device. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the non-destructive testing device for metallic materials in an embodiment of this utility model; Figure 2 This is a schematic diagram of the front cross-sectional structure of the non-destructive testing device for metallic materials in this embodiment of the present invention; Figure 3 This is a bottom view of the coating structure of the non-destructive testing device for metallic materials in this embodiment of the present invention. Figure 4 This is a top view cross-sectional structural diagram of the fixing seat of the non-destructive testing device for metallic materials in this embodiment of the present invention; Figure 5 This is a side cross-sectional view of the clamping structure of the non-destructive testing device for metallic materials in this embodiment of the present invention.

[0019] Explanation of reference numerals in the attached figures: 1-Staff; 11-Base; 12-Upright plate; 2-Clamping structure; 21-Actuator; 22-Bearing plate; 23-Clamping plate; 231-Limit slider; 24-Pushing assembly; 241-Dual-head motor; 242-Threaded sleeve; 2421-Rotating seat; 243-Sprocket; 244-Chain; 245-Connecting rod; 3-Flaw detection structure; 31-Driver component; 32-Threaded rod; 33-Moving plate; 331-Probe component; 34-Optical rod; 4-Storage structure; 41-Fixed base; 411-Storage chamber; 412-Dust collection chamber; 413-Feed pipe; 414-End cover; 415-Hatch door; 42-Exhaust fan; 43-Drive pump; 44-Flow valve; 5-Painting structure; 51-Electric actuator; 52-Moving plate; 53-Discharge nozzle; 54-Paint brush; 55-Dust suction end; 56-Guide pipe. Detailed Implementation

[0020] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral 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; they can also refer to the internal connection of two components; and they can refer to a wireless connection or a wired connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] Please see Figure 1-5 As shown in the figure, this utility model embodiment provides a non-destructive testing device for metallic materials, including a support 1, a testing structure 3, a coating structure 5, and a material storage structure 4.

[0023] The bracket 1 includes a base 11 and two upright plates 12. The base 11 is horizontally arranged, and the two upright plates 12 are vertically installed on both sides of the top surface of the base 11 along the length direction. The flaw detection structure 3 includes a movable plate 33, a probe component 331, and a movable assembly. The movable plate 33 is located between the two upright plates 12. The probe component 331 is installed at the bottom of the movable plate 33, and the movable assembly is used to drive the movable plate 33 to move laterally.

[0024] Two coating structures 5 are symmetrically installed at the bottom of the movable plate 33 along its length. Each coating structure 5 includes an electric actuator 51, a movable plate 52, a dust suction head 55, a discharge nozzle 53, and a paint brush 54, wherein: The electric actuator 51 is installed at the bottom of the movable plate 33, and the movable plate 52 is installed at the bottom of the electric actuator 51. The dust suction head 55, the discharge nozzle 53, and the paint brush 54 are all vertically installed at the bottom of the movable plate 52 and arranged in a straight line along the length of the movable plate 33. The discharge nozzle 53 is located between the dust suction head 55 and the paint brush 54, and the paint brush 54 is located on the side closer to the probe component 331. During the movement of the movable plate 33, the front end of the painting structure 5 located in the movement direction of the movable plate 33 operates to facilitate the cleaning and application of the detection auxiliary medium to the object surface before the probe component 331 arrives.

[0025] The storage structure 4 includes a fixed base 41, an exhaust fan 42, and a feeding assembly. The fixed base 41 is mounted on the top of the movable plate 33, the exhaust fan 42 is mounted on the bottom of the movable plate 33 and is connected to the dust suction head 55, and the feeding assembly is installed in the fixed base 41 and is connected to the discharge nozzle 53. The fixed base 41 is provided with a storage chamber 411 for storing the detection auxiliary medium and a dust collection chamber 412 for storing dust. The other end of the exhaust fan 42 extends to the dust collection chamber 412, and the other end of the feeding assembly is connected to the storage chamber 411. The feeding assembly is used to transport the detection auxiliary medium in the storage chamber 411 to the discharge nozzle 53.

[0026] As a further description of the above solution, the bottom end of the exhaust fan 42 is provided with a drain pipe that is connected to the dust suction head 55, so that when the exhaust fan 42 is running, the dust on the surface of the object can be sucked into the dust collection chamber 412 by the dust suction head 55 and the drain pipe. The feeding component can work with the discharge nozzle 53 to evenly transport the detection auxiliary medium stored in the storage chamber 411 to the surface of the object.

[0027] During the movement of the moving plate 33, the brushing structure 5, in conjunction with the material storage structure 4, can perform cleaning operations on the surface of the item to be tested and application of the testing auxiliary medium.

[0028] As a further description of the above scheme, common non-destructive testing methods include ultrasonic testing, magnetic particle testing, penetrant testing, eddy current testing, and infrared thermography. Among them, ultrasonic testing, magnetic particle testing, and penetrant testing require the use of auxiliary testing media, as follows: ultrasonic testing requires the use of a coupling agent, magnetic particle testing requires the use of magnetic particles, and penetrant testing requires the use of colored or fluorescent penetrant to ensure the testing effect; this embodiment uses ultrasonic testing as an example.

[0029] Please see Figure 1-4 As shown, the feeding assembly includes a drive pump 43, a flow valve 44, and a guide pipe 56. The drive pump 43 is installed in the fixed base 41 and communicates with the storage chamber 411. The flow valve 44 is installed at the bottom of the moving plate 33 and communicates with the output end of the drive pump 43. The guide pipe 56 is installed at the end of the flow valve 44 away from the drive pump 43 and communicates with the top of the discharge nozzle 53.

[0030] As a preferred embodiment of the above scheme, the drive pump 43 is a structure such as a gear pump or a plunger pump used to provide the pressure and flow required by the pipeline system. The drive pump 43 serves as a power source to realize the transportation of fluid in the pipeline, and the flow valve 44 precisely controls the flow rate of the fluid in the pipeline.

[0031] Please see Figure 1-4 As shown, the storage chamber 411 is located in the middle of the fixed base 41, and the dust collection chamber 412 is arranged in a ring shape and located outside the storage chamber 411. Two cleaning ports communicating with the dust collection chamber 412 are opened on the outside of the fixed base 41. A door 415 adapted to the size of the cleaning port is hinged on the fixed base 41. The dust collection chamber 412 is located on the outside of the fixed base 41, which makes it easier to communicate with the exhaust fans 42 on both sides. In addition, when not in use, the impurities in the dust collection chamber 412 can be cleaned by opening the door 415 and using the cleaning ports.

[0032] Please see Figure 1-4As shown, the top of the fixed base 41 is fixedly connected to the feed pipe 413, which communicates with the storage chamber 411. The top of the feed pipe 413 is detachably fitted with an end cap 414. The feed pipe 413 can be used to fill the storage chamber 411 with the detection auxiliary medium, while the end cap 414 can seal the storage chamber 411, prevent the detection auxiliary medium from contacting the outside air, and effectively extend the deterioration cycle of the detection auxiliary medium.

[0033] Please see Figure 2-3 As shown, the paint brush 54 is arc-shaped, and the length of the paint brush 54 is greater than the outer diameter of the probe component 331. This ensures that the width of the brushing path is greater than the outer diameter of the probe component 331, thereby effectively preventing the probe component 331 from contacting the area where the detection auxiliary medium has not been applied.

[0034] Please see Figure 1-3 As shown, the moving assembly includes a threaded rod 32, a driving component 31, and a smooth rod 34. The threaded rod 32 is rotatably mounted between the two upright plates 12 and threadedly connected to the moving plate 33. The driving component 31 is mounted on the upright plate 12 and fixedly connected to the threaded rod 32. The smooth rod 34 is fixedly mounted between the two upright plates 12 and slidably connected to the moving plate 33. The threaded rod 32 and the smooth rod 34 are symmetrically positioned. This allows the smooth rod 34 to be used to restrict the rotation of the moving plate 33, and the rotation of the threaded rod 32 can drive the moving plate 33 to move.

[0035] Please see Figure 1-5 As shown, the non-destructive testing device for metal materials also includes a clamping structure 2. The clamping structure 2 includes an actuator 21, a support plate 22, a clamping plate 23, and a pushing component 24. Several actuators 21 are vertically mounted on the top of the base 11. The support plate 22 is mounted on the top of the actuators 21. The clamping plate 23 is slidably mounted on both sides of the top surface of the support plate 22 in the width direction. The pushing component 24 is mounted on the bottom of the support plate 22 and is used to drive the clamping plate 23 to move. The pushing component 24 drives the two clamping plates 23 to come together to achieve clamping of the object to be tested.

[0036] As a preferred embodiment of the above scheme, the actuator 21 is a hydraulic rod, so that the height of the support plate 22 can be adjusted by operating the actuator 21, thereby allowing the height of the object mounted on the support plate 22 to be adapted to the installation position of the probe component 331.

[0037] Please see Figure 1-5 As shown, the pushing component 24 includes a connecting rod 245, a threaded sleeve 242, and a transmission component. Several connecting rods 245 are symmetrically installed on opposite sides of the two clamping plates 23. Several threaded sleeves 242 are rotatably installed on the bottom of the bearing plate 22 and are threadedly connected to the horizontal section of the connecting rod 245. The transmission component is installed on the bottom of the bearing plate 22 and is used to drive the threaded sleeves 242 to rotate.

[0038] The connecting rod 245 is U-shaped. The outer periphery of the horizontal section of the connecting rod 245 away from the clamping plate 23 is provided with external threads. The inner side of the threaded sleeve 242 is provided with internal threads that are compatible with the external threads. The bottom of the bearing plate 22 is equipped with a rotating seat 2421 for rotating the threaded sleeve 242, so that the rotation of the threaded sleeve 242 can drive the connecting rods 245 on both sides to move closer or further apart, thereby driving the two clamping plates 23 to move to the side that is further apart or closer together.

[0039] Please see Figure 2 and Figure 5 As shown, the transmission assembly includes a sprocket 243, a chain 244, and a dual-head motor 241. The sprocket 243 is mounted on the outside of the threaded sleeve 242, and the chain 244 is fitted on the outside of the sprocket 243. The dual-head motor 241 is mounted on the bottom of the support plate 22 and is used to drive any group of threaded sleeves 242 to rotate. This allows all threaded sleeves 242 on the same side of the support plate 22 to rotate synchronously using the transmission action of the sprocket 243 and the chain 244. The dual-head motor 241 can drive the corresponding threaded sleeve 242 to rotate, so that all threaded sleeves 242 can rotate synchronously when the dual-head motor 241 is running.

[0040] Please see Figure 5 As shown, several limiting sliders 231 are installed at the bottom of the clamping plate 23, and the top surface of the bearing plate 22 is provided with a limiting groove that is adapted to the sliding of the limiting sliders 231, so as to make it convenient to maintain the stability of the clamping plate 23 by using the cooperation of the limiting sliders 231 and the limiting groove.

[0041] The working process of the aforementioned non-destructive testing device for metallic materials is as follows: When using this non-destructive testing device for metal materials, the object to be tested is first installed on the support plate 22 by adjusting the position of the clamping plate 23 in the clamping structure 2, and the actuator 21 is operated to bring the top surface of the object to be tested close to the probe component 331. Then, the drive component 31 is operated to make the moving component drive the moving plate 33 and the probe component 331 to move linearly on the top surface of the object to be tested. During the movement of the moving plate 33, the coating structure 5 located at the front end of the moving plate 33 operates. The set exhaust fan 42 can work with the dust suction head 55 to suck the dust on the surface of the object to be detected into the dust collection chamber 412. At the same time, the set drive pump 43 and flow valve 44 can evenly deliver the detection auxiliary medium to the dust-cleaned position. The set paint brush 54 can evenly apply the detection auxiliary medium as the moving plate 33 moves, thereby ensuring the detection effect of the probe component 331.

[0042] Although the present invention has been disclosed above, its protection scope is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of this disclosure, and all such changes and modifications will fall within the protection scope of this invention.

Claims

1. A non-destructive testing device for metallic materials, characterized in that, include: The bracket (1) includes a horizontally arranged base (11) and vertical plates (12) installed on both sides of the top surface of the base (11) along the length direction. The flaw detection structure (3) includes a movable plate (33) located between the two upright plates (12), a probe component (331) installed at the bottom of the movable plate (33), and a movable assembly for driving the movable plate (33) to move laterally. Two coating structures (5) are symmetrically installed at the bottom of the moving plate (33) along the length direction of the moving plate (33). Each coating structure (5) includes an electric push rod (51) installed at the bottom of the moving plate (33), a movable plate (52) installed at the bottom of the electric push rod (51), and a dust suction head (55), a discharge nozzle (53), and a paint brush (54) installed vertically at the bottom of the movable plate (52) and arranged in a straight line along the length direction of the moving plate (33). The discharge nozzle (53) is located between the dust suction head (55) and the paint brush (54), and the paint brush (54) is located on the side closer to the probe component (331). The storage structure (4) includes a fixed base (41) for mounting the top of the movable plate (33), a blower (42) installed at the bottom of the movable plate (33) and communicating with the dust suction head (55), and a feeding assembly installed in the fixed base (41) and communicating with the discharge nozzle (53). The fixed base (41) is provided with a storage chamber (411) for storing the detection auxiliary medium and a dust collection chamber (412) for storing dust. The other end of the blower (42) extends to the dust collection chamber (412), and the other end of the feeding assembly communicates with the storage chamber (411). The feeding assembly is used to transport the detection auxiliary medium in the storage chamber (411) to the discharge nozzle (53). During the movement of the moving plate (33), the brushing structure (5) and the material storage structure (4) can perform cleaning operations on the surface of the item to be tested and application of the detection auxiliary medium.

2. The non-destructive testing device for metallic materials according to claim 1, characterized in that, The feeding assembly includes a drive pump (43) installed in the fixed base (41) and communicating with the storage chamber (411), a flow valve (44) installed at the bottom of the moving plate (33) and communicating with the output end of the drive pump (43), and a guide pipe (56) installed on the flow valve (44) away from the drive pump (43) and communicating with the top of the discharge nozzle (53).

3. The non-destructive testing device for metallic materials according to claim 1, characterized in that, The storage chamber (411) is located in the middle of the fixed base (41), the dust collection chamber (412) is arranged in a ring shape and the dust collection chamber (412) is located outside the storage chamber (411). Two cleaning ports communicating with the dust collection chamber (412) are opened on the outside of the fixed base (41), and a door (415) adapted to the size of the cleaning port is hinged on the fixed base (41).

4. The non-destructive testing device for metallic materials according to claim 3, characterized in that, The top of the fixed base (41) is fixedly connected to the feed pipe (413) which communicates with the storage chamber (411), and the top of the feed pipe (413) is detachably fitted with an end cap (414).

5. The non-destructive testing device for metallic materials according to claim 1, characterized in that, The paint brush (54) is arc-shaped, and the length of the paint brush (54) is greater than the outer diameter of the probe component (331).

6. The non-destructive testing device for metallic materials according to claim 1, characterized in that, The moving assembly includes a threaded rod (32) rotatably mounted between the two upright plates (12) and threadedly connected to the moving plate (33), a drive member (31) mounted on the upright plate (12) and fixedly connected to the threaded rod (32), and a smooth rod (34) fixedly mounted between the two upright plates (12) and slidably connected to the moving plate (33), wherein the smooth rod (34) is symmetrical to the threaded rod (32).

7. The non-destructive testing device for metallic materials according to claim 1, characterized in that, Also includes: The clamping structure (2) includes several actuators (21) vertically mounted on the top of the base (11), a support plate (22) mounted on the top of the actuators (21), clamps (23) slidably mounted on both sides of the top surface of the support plate (22) in the width direction, and a push assembly (24) mounted on the bottom of the support plate (22) for driving the clamps (23) to move.

8. The non-destructive testing device for metallic materials according to claim 7, characterized in that, The pushing component (24) includes several connecting rods (245) symmetrically installed on opposite sides of the clamping plates (23), several threaded sleeves (242) rotatably installed on the bottom of the bearing plate (22) and threadedly connected to the horizontal section of the connecting rods (245), and a transmission component installed on the bottom of the bearing plate (22) for driving the threaded sleeves (242) to rotate. The connecting rods (245) are U-shaped. The outer periphery of the horizontal section of the connecting rods (245) opposite to the clamping plates (23) is provided with external threads. The inner side of the threaded sleeves (242) is provided with internal threads that are adapted to the external threads. The bottom of the bearing plate (22) is equipped with a rotating seat (2421) for rotatably installing the threaded sleeves (242).

9. The non-destructive testing device for metallic materials according to claim 8, characterized in that, The transmission assembly includes a sprocket (243) mounted on the outside of the threaded sleeve (242), a chain (244) fitted on the outside of the sprocket (243), and a double-headed motor (241) mounted on the bottom of the support plate (22) for driving any set of the threaded sleeves (242) to rotate.

10. The non-destructive testing device for metallic materials according to claim 7, characterized in that, The bottom of the clamping plate (23) is equipped with several limiting sliders (231), and the top surface of the bearing plate (22) is provided with a limiting groove that is adapted to slide with the limiting sliders (231).

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