A magnetic particle inspection auxiliary device for seamless steel pipes

Abstract

This utility model relates to the field of auxiliary equipment for metal processing flaw detection, specifically to an auxiliary device for magnetic particle flaw detection of seamless steel pipes. It includes a working platform with supporting legs underneath, a clamping mechanism on the platform, a test piece platform on one side, and a magnetic suspension storage tank on the other side. The clamping mechanism can accommodate seamless steel pipes of different diameters, preventing pipe slippage during flaw detection and ensuring operational stability. It also drives a rotating cylinder, preventing magnetic suspension from directly contaminating the working platform, facilitating magnetic particle flaw detection on all surfaces of the seamless steel pipe, and improving detection efficiency and accuracy. A pair of clamps on the test piece platform facilitates pre-flaw detection testing of the test piece, allowing operators to better observe the test piece.

Description

Technical Field

[0001] This utility model relates to the field of auxiliary equipment for metal processing flaw detection, and in particular to an auxiliary device for magnetic particle flaw detection of seamless steel pipes. Background Technology

[0002] Seamless steel pipes are widely used in various industrial sectors, and their manufacturing process typically includes hot rolling, cold rolling, and other processes. Due to their excellent mechanical properties and superior corrosion resistance, these pipes have become the preferred material for industries such as oil and gas, construction, and aerospace. Ensuring the reliability of both the internal and external quality is crucial in the production and use of seamless steel pipes, and magnetic particle testing is one of the important methods for detecting defects in seamless steel pipes.

[0003] Magnetic particle testing is a method for detecting surface and subsurface defects in metals using magnetic fields and the properties of magnetic particles. This method applies a magnetic field to the object being tested, causing magnetic leakage in areas with defects, which are then revealed by granular magnetic particles. However, when performing magnetic particle testing on seamless steel pipes, traditional testing equipment often lacks suitable auxiliary devices, severely impacting the efficiency and effectiveness of the testing operation.

[0004] Existing magnetic particle testing equipment typically lacks effective clamps to hold seamless steel pipes, causing them to easily roll during testing. This rolling not only increases the difficulty of the testing operation but also causes uneven spraying of the magnetic suspension and the magnetization process, further affecting the accuracy and reliability of the testing. Furthermore, traditional equipment often lacks a dedicated test area, failing to provide proper support for the placement of test pieces and the positioning of the AC electromagnetic yoke. Improperly placed magnetic suspension containers can also lead to cluttered work platforms, increasing the workload of operators. Utility Model Content

[0005] The purpose of this utility model is to provide an auxiliary device for magnetic particle testing of seamless steel pipes, in order to solve the problems mentioned in the background art, such as the lack of clamps in traditional magnetic particle testing of seamless steel pipes, which causes the pipe to roll, affects the uniformity of spraying magnetic suspension and magnetization process, increases the difficulty and time of operation, and causes the test area and equipment storage location to be chaotic, resulting in a chaotic operating environment and further reducing the efficiency and quality of testing.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a magnetic particle inspection auxiliary device for seamless steel pipes, comprising a working platform, a support leg below the working platform, a clamping mechanism on the working platform, a test piece test table on one side of the working platform, and a magnetic suspension liquid storage tank at the other end of the same side of the working platform.

[0007] In a preferred embodiment of this utility model, the clamping mechanism includes a fixed bearing frame, a slide rail on one side of the fixed bearing frame, a sliding bearing frame movably mounted on the slide rail, and a rotating cylinder movably mounted inside both the fixed bearing frame and the sliding bearing frame. A bidirectional screw is mounted inside the rotating cylinder, one end of which extends outside the rotating cylinder, and a cross groove is provided on the end of the bidirectional screw extending outside the rotating cylinder. A pair of sliding grooves are formed on one side of the rotating cylinder, and a clamping plate is movably mounted on the sliding grooves. The clamping plate is threadedly connected to the bidirectional screw and has anti-slip textures. A motor is mounted on the other side of the fixed bearing frame, and the output end of the motor is connected to the rotating cylinder on the fixed bearing frame.

[0008] As a preferred embodiment of this utility model, the test plate is provided with a pair of clamps, a bracket is provided on one side of the test plate, a support frame is hinged on the bracket, and a lighting lamp is fixed on the support frame.

[0009] As a preferred embodiment of this utility model, the magnetic suspension storage tank is provided with a storage rack on its outer side, one side of the storage rack is connected to the working platform, and the magnetic suspension storage tank is provided with a press nozzle.

[0010] As a preferred embodiment of this invention, an array of lighting lamps is provided on one side of the clamping mechanism.

[0011] As a preferred embodiment of the present invention, one end of the working platform is provided with a second slide rail, and an AC electromagnetic yoke storage ring is slidably disposed on the second slide rail.

[0012] Compared with the prior art, the above-mentioned technical solution of this utility model has the following beneficial technical effects:

[0013] 1. By setting up an array of lighting lamps, sufficient lighting can be achieved to ensure that the testing environment meets the illumination requirements of magnetic particle testing, allowing the testing personnel to clearly observe the adsorption of magnetic powder on the surface of seamless steel pipes.

[0014] 2. The rotating drum can be driven to rotate by starting the motor, which avoids the magnetic suspension liquid from directly contaminating the work platform, making it convenient for workers to perform magnetic particle testing on all surfaces of the seamless steel pipe, and improving the efficiency and accuracy of the testing.

[0015] 3. The magnetic suspension liquid storage tank allows for easy spraying of the magnetic suspension liquid by pressing the nozzle during the flaw detection process, effectively preventing accidental spillage of the magnetic suspension liquid container and resulting waste.

[0016] 4. A pair of clips are installed on the test piece test table to facilitate the fixing of the test piece and provide convenience for the test piece testing before flaw detection. The lighting provides good illumination during the test piece testing to help the operator to better observe the test piece.

[0017] 5. The double-ended screw is threaded to the clamping plate, which can not only adapt to seamless steel pipes of different diameters, but also prevent the steel pipe from slipping during the flaw detection process, thus ensuring the stability of the flaw detection operation. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a side view of the overall structure of this utility model;

[0020] Figure 3 This utility model Figure 3 Enlarged view of the structure at point A;

[0021] Figure 4 This is an enlarged view of the left side structure of the working platform of this utility model;

[0022] Figure 5 This is an enlarged view of the right side structure of the working platform of this utility model.

[0023] Reference numerals: 1. Working platform; 2. Clamping mechanism; 3. Test plate test bench; 4. Magnetic suspension liquid storage tank; 5. Fixed bearing bracket; 6. Slide rail one; 7. Sliding bearing bracket; 8. Rotating cylinder; 9. Bidirectional screw; 10. Cross slot; 11. Slide groove; 12. Clamping plate; 13. Anti-slip texture; 14. Motor; 15. Bracket; 16. Support frame; 17. Lighting lamp; 18. Storage rack; 19. Press nozzle; 20. Lighting lamp row; 21. Slide rail two; 22. AC electromagnetic yoke storage ring; 23. Clamping plate. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.

[0025] This utility model provides a technical solution: an auxiliary device for magnetic particle inspection of seamless steel pipes, such as... Figure 1 As shown, it includes a working platform 1, a support leg below the working platform 1, a clamping mechanism 2 on the working platform 1, a test plate test bench 3 on one side of the working platform 1, and a magnetic suspension liquid storage tank 4 on the other end of the same side of the working platform 1.

[0026] like Figure 4 , Figure 5As shown, the clamping mechanism 2 includes a fixed bearing frame 5. A slide rail 6 is provided on one side of the fixed bearing frame 5. A sliding bearing frame 7 is movably mounted on the slide rail 6. A rotating cylinder 8 is movably mounted inside both the fixed bearing frame 5 and the sliding bearing frame 7. A bidirectional screw 9 is provided inside the rotating cylinder 8. One end of the bidirectional screw 9 extends to the outside of the rotating cylinder 8. A cross groove 10 is provided on the end of the bidirectional screw 9 extending to the outside of the rotating cylinder 8. A pair of sliding grooves 11 are opened on one side of the rotating cylinder 8. A clamping plate 12 is movably mounted on the sliding groove 11. The clamping plate 12 is threadedly connected to the bidirectional screw 9. The clamping plate 12 is provided with anti-slip textures 13. A motor 14 is provided on the other side of the fixed bearing frame 5. The output end of the motor 14 is connected to the rotating cylinder 8 on the fixed bearing frame 5.

[0027] like Figure 2 , Figure 4 As shown, a pair of clamping plates 23 are provided on the test plate test stand 3, and a bracket 15 is provided on one side of the test plate test stand 3. A support frame 16 is hinged on the bracket 15, and a lighting lamp 17 is fixed on the support frame 16.

[0028] like Figure 1 As shown, a storage rack 18 is provided on the outside of the magnetic suspension storage tank 4. One side of the storage rack 18 is connected to the working platform 1. A press nozzle 19 is provided on the magnetic suspension storage tank 4. The press nozzle 19 can be connected to a nozzle of appropriate size.

[0029] like Figure 1 , Figure 4 As shown, a lighting array 20 is provided on one side of the clamping mechanism 2, and the lighting array 20 can ensure an illuminance value ≥1000Lx.

[0030] like Figure 3 As shown, one end of the working platform 1 is provided with a slide rail 21, and an AC electromagnetic yoke storage ring 22 is slidably mounted on the slide rail 21. The AC electromagnetic yoke storage ring 22 allows the operator to conveniently place the AC electromagnetic yoke.

[0031] In practice, the operator first measures the overall length of the seamless steel pipe and records its dimensions. Then, one end of the seamless steel pipe is placed between the clamping plates 12 of the clamping mechanism 2. The cross handle is then inserted into the cross slot 10, and rotating the cross handle causes the double-acting screw 9 to rotate, moving the clamping plate 12 along the slide groove 11 to clamp the seamless steel pipe. The clamping mechanism 2 at the other end is moved to the other end of the seamless steel pipe via the slide rail 6 according to the pipe's length. The cross handle is then inserted into the cross slot 10, and rotating the cross handle causes the double-acting screw 9 to rotate, moving the clamping plate 12 along the slide groove 11 to clamp the other end of the seamless steel pipe as well. Once clamping is successful, the motor 14 is started. The motor 14 drives the rotating cylinder 8 to rotate within the fixed bearing bracket 5, checking the surface of the seamless steel pipe for oil stains or other contaminants that could affect the flaw detection effect. A suspension prepared by mixing magnetic powder with a suitable liquid medium in a certain proportion is added to the magnetic suspension storage tank 4, and a suitable nozzle is connected to the pressing nozzle 19. The AC electromagnetic yoke is energized and the position of the AC electromagnetic yoke storage ring 22 is adjusted along the slide rail 21 so that the AC electromagnetic yoke storage ring 22 is adapted to place the AC electromagnetic yoke.

[0032] After completing the above preparations, test piece 3 is tested to ensure the effectiveness of subsequent flaw detection on the seamless steel pipe. Test piece 3 is placed on the test piece test platform 3, with the scored side facing down. It is held in place by clamping piece 23, ensuring that clamping piece 23 does not cover the scored area on test piece 3. The nozzle 19 is pressed down to spray the magnetic suspension liquid onto test piece 3. Then, an AC electromagnetic yoke is used to magnetize it. The illumination lamp 17 is turned on, and by adjusting the bracket 15 and support frame 16, the illumination lamp 17 is aimed at test piece 3. The surface of test piece 3 is observed for any scored marks. If scored marks are observed, it indicates that the equipment and magnetic suspension liquid meet the testing requirements.

[0033] To perform magnetic particle testing on seamless steel pipes, a magnetic suspension liquid is sprayed onto the surface of the pipe using a handheld nozzle. Simultaneously, the surface of the seamless steel pipe is magnetized. After magnetization, the illumination array 20 is turned on to observe the magnetic traces. If defects are found, they are recorded. After testing one side of the seamless steel pipe, the motor 14 is started. The motor 14 drives the rotating cylinder 8 to rotate, causing the seamless steel pipe to rotate to the other side. The above steps are then repeated to perform magnetic particle testing on the other side of the seamless steel pipe.

[0034] It should be understood that the above-described specific embodiments of this utility model are merely illustrative or explanatory of the principles of this utility model and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this utility model should be included within the protection scope of this utility model. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A magnetic particle inspection auxiliary device for seamless steel pipes, comprising a working platform (1), wherein a support leg is provided below the working platform (1), characterized in that: The working platform (1) is provided with a clamping mechanism (2), and a test plate test bench (3) is provided on one side of the working platform (1). A magnetic suspension storage tank (4) is provided at the other end of the same side of the working platform (1). The clamping mechanism (2) includes a fixed bearing frame (5). A slide rail (6) is provided on one side of the fixed bearing frame (5). A sliding bearing frame (7) is movably arranged on the slide rail (6). A rotating cylinder (8) is movably arranged inside both the fixed bearing frame (5) and the sliding bearing frame (7). A bidirectional screw (9) is provided inside the rotating cylinder (8). One end of the screw (9) extends to the outside of the rotating cylinder (8). A cross groove (10) is provided on the end of the screw (9) extending to the outside of the rotating cylinder (8). A pair of sliding grooves (11) are provided on one side of the rotating cylinder (8). A clamping plate (12) is movably provided on the sliding groove (11). The clamping plate (12) is threadedly connected to the screw (9). Anti-slip texture (13) is provided on the clamping plate (12). A motor (14) is provided on the other side of the fixed bearing bracket (5). The output end of the motor (14) is connected to the rotating cylinder (8) on the fixed bearing bracket (5).

2. The magnetic particle inspection auxiliary device for seamless steel pipes according to claim 1, characterized in that: The test plate test stand (3) is provided with a pair of clamps (23), and a bracket (15) is provided on one side of the test plate test stand (3). A support frame (16) is hinged on the bracket (15), and a lighting lamp (17) is fixed on the support frame (16).

3. The magnetic particle inspection auxiliary device for seamless steel pipes according to claim 2, characterized in that: The magnetic suspension storage tank (4) is provided with a storage rack (18) on the outside. One side of the storage rack (18) is connected to the working platform (1). The magnetic suspension storage tank (4) is provided with a press nozzle (19).

4. The magnetic particle inspection auxiliary device for seamless steel pipes according to claim 3, characterized in that: The clamping mechanism (2) is provided with a lighting array (20) on one side.

5. The magnetic particle inspection auxiliary device for seamless steel pipes according to claim 4, characterized in that: One end of the working platform (1) is provided with a slide rail two (21), and an AC electromagnetic yoke storage ring (22) is slidably arranged on the slide rail two (21).

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