Portable test block for evaluating detection depth of magnetic powder

Abstract

The utility model relates to the technical field of nondestructive testing, in particular to a portable test block for evaluating the detection depth of magnetic powder. Fixing plates are arranged on the two sides of the bottom plate, a plurality of layers of thin plates are arranged between the fixing plates, the thin plates are of detachable structures, the thin plates are integrally rectangular, through holes are formed in the thin plates, protrusions are arranged on the inner sides of the fixing plates from top to bottom, notches matched with the protrusions are formed in the two ends of the thin plates, and positioning holes are formed in the fixing plates. A fixing block matched with the positioning hole is arranged at the bottom of the fixing plate, and the bottom plate and the fixing plate are detachably connected through the positioning hole. Through the detachable multi-layer thin plate structure, not only is the capability of detecting defects with different depths flexibly adjusted, but also the universality, the practicability and the portability of the test block are greatly enhanced.

Description

Technical Field

[0001] This utility model relates to the field of nondestructive testing technology, specifically to a portable test block for evaluating the depth of magnetic particle testing. Background Technology

[0002] Magnetic particle testing is a commonly used non-destructive testing technique for detecting surface and near-surface defects in materials. However, in practical applications, the detection capability for defects of different depths may vary, thus requiring a tool or test block capable of evaluating the depth of magnetic particle testing. Existing test blocks may not be flexible enough to adapt to the detection needs of defects of different depths. For example, Chinese Patent No. CN216350490U discloses a test block for performance inspection of a longitudinal magnetization system in magnetic particle testing, but the test block may only have a fixed layer, which limits its versatility and flexibility in evaluating defects of different depths. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a portable test block for evaluating the depth of magnetic particle testing, which can adapt to test blocks for detecting defects at different depths, is easy to disassemble and reassemble, and is easy to carry.

[0004] The technical solution of this utility model is as follows:

[0005] A portable test block for evaluating the depth of magnetic particle detection includes a base plate, fixed plates on both sides of the base plate, and several thin plates between the fixed plates. The thin plates are detachable and rectangular in shape. Through holes are provided on the thin plates. The inner side of the fixed plates has protrusions from top to bottom, and notches that cooperate with the protrusions are provided at both ends of the thin plates.

[0006] Preferably, the number of through holes in the thin plate increases gradually from top to bottom, and the circular holes of adjacent thin plates fit together and are located on the same axis.

[0007] Preferably, the base plate and the fixing plate are made of a high-strength, low-permeability ferromagnetic material.

[0008] Preferably, the fixing plate is provided with positioning holes, and the base plate and the fixing plate are detachably connected through the positioning holes.

[0009] Preferably, the shape of the through hole also includes triangles and quadrilaterals.

[0010] Preferably, each of the thin plates is made of a different material.

[0011] Compared with the prior art, this utility model has the following advantages:

[0012] This application utilizes a detachable multi-layer thin-plate structure, which not only allows for flexible adjustment of the detection capability for defects of different depths but also greatly enhances the versatility and practicality of the test block, making it easy to carry after disassembly. The progressively increasing number of through holes on the thin plates and the concentric circular holes ensure the accuracy and consistency of the test results. The use of ferromagnetic materials with different magnetic permeabilities, along with the diversity of plate materials and through-hole shapes, further broadens the application range of the test block, enabling it to adapt to various testing scenarios. Furthermore, the detachable connection between the base plate and the fixing plate allows users to quickly assemble or replace components according to actual needs, improving testing efficiency and convenience. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0015] Figure 2 This is an attempt at an explosive structure of the present invention.

[0016] In the diagram: 1. Base plate; 2. Fixing plate; 3. Thin plate; 4. Through hole; 5. Protrusion; 6. Notch; 7. Positioning hole; 8. Positioning block. Detailed Implementation

[0017] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0018] Example

[0019] like Figures 1-2As shown, this embodiment provides a portable test block for evaluating the depth of magnetic particle detection, including a base plate 1, fixing plates 2 on both sides of the base plate 1, several thin plates 3 between the fixing plates 2, the thin plates 3 are detachable structures, the thin plates 3 are rectangular in shape, the thin plates 3 are provided with through holes 4, the inner side of the fixing plates 2 is provided with protrusions 5 from top to bottom, and the two ends of the thin plates 3 are provided with notches 6 that cooperate with the protrusions 5. As the basic support for the test block, the base plate 1 possesses sufficient strength and stability to ensure the stability of the test block during the testing process. The fixing plate 2 is used to fix and support the multi-layer thin plates 3, ensuring that the thin plates 3 can be stably installed between the base plate 1 and the fixing plate 2, and is easy to disassemble and replace. The thin plates 3 have a detachable structure, allowing users to adjust the number and configuration of the thin plates 3 according to testing needs. The thin plates 3 are rectangular in shape to adapt to common magnetic particle testing equipment and operating methods. The detachable structure of the thin plates 3 allows users to replace or adjust the number and layers of the thin plates 3 according to actual needs, thereby flexibly simulating defects of different depths. The through holes 4 are used to simulate defects in the material, and their number and distribution can be customized according to testing needs. The design of the through holes 4 should ensure that magnetic powder can smoothly enter and display the location of defects. The inner side of the fixing plate 2 has protrusions 5 from top to bottom, and the two ends of the thin plates 3 have notches 6 that cooperate with the protrusions 5. This design ensures that the thin plates 3 can be stably installed between the fixing plates 2 and is not easy to fall off. The cooperation between the protrusions 5 and the notches 6 also facilitates users to quickly disassemble and replace the thin plates 3.

[0020] Preferably, the number of through holes 4 in the thin plate 3 increases progressively from top to bottom, with the circular holes of adjacent thin plates 3 fitting together and located on the same axis. By setting the number of through holes 4 to increase progressively in the test block, defects that gradually deepen from the surface to the interior can be simulated, thereby more comprehensively evaluating the detection capability of the magnetic particle testing equipment. The fitting togetherness and coaxiality of the circular holes of adjacent thin plates 3 ensures that the magnetic particle can smoothly pass through each layer of thin plates 3 during the testing process, improving the accuracy of the detection.

[0021] Preferably, the base plate 1 and the fixing plate 2 are made of a high-strength, low-permeability ferromagnetic material. The high-strength material ensures the stability and durability of the test block; the low-permeability material reduces the leakage of the magnetic field in the base plate 1 and the fixing plate 2, thereby improving the sensitivity and accuracy of magnetic particle detection.

[0022] Preferably, the fixing plate 2 is provided with positioning holes 7, and the base plate 1 and the fixing plate 2 are detachably connected through the positioning holes 7. The design of the positioning holes 7 allows the base plate 1 and the fixing plate 2 to be precisely aligned and stably connected, and the detachable connection method facilitates the user to quickly assemble or disassemble the test block as needed.

[0023] Preferably, the through holes 4 have different shapes, and the through holes 4 with different shapes can simulate different types of defects, thereby more comprehensively evaluating the detection performance of the magnetic particle inspection equipment.

[0024] Preferably, the thin plate 3 is made of different materials. Thin plates 3 made of different materials can simulate different material combinations that may be encountered in actual workpieces, so that the test block can more realistically reflect the performance of magnetic particle testing in practical applications and help users understand the performance differences of magnetic particle testing on different materials.

[0025] Working principle:

[0026] In use, remove the base plate 1 and install the fixing plates 2 on both sides of the base plate 1. The positioning blocks 8 of the fixing plates 2 correspond to the positioning holes 7 of the base plate 1. Install the thin plate 3 between the fixing plates 2. The thin plate 3 has customizable through holes 4 to simulate defects of different depths and types. The number and configuration of the thin plates 3 and the shape and number of through holes 4 can be adjusted as needed. It is made of high-strength, low-permeability material to ensure detection accuracy and sensitivity. The fixing plates 2 and the base plate 1 are detachably connected through the positioning holes 7, which is convenient for quick assembly and disassembly. The thin plates 3 made of different materials can also simulate the material combination in the actual workpiece and are easy to carry.

[0027] Although the present invention has been described in detail with reference to the accompanying drawings and preferred embodiments, it is not limited thereto. Various equivalent modifications or substitutions can be made to the embodiments of the present invention by those skilled in the art without departing from the spirit and essence of the present invention, and such modifications or substitutions should all be within the scope of the present invention. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should also be included within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the scope of the claims.

Claims

1. A portable test block for evaluating the depth of magnetic particle detection, characterized by, The utility model relates to a kind of detachable thin plate shelves, including bottom plate (1), bottom plate (1) both sides are equipped with fixed plate (2), and several layers of thin plate (3) are equipped between fixed plate (2), and thin plate (3) is detachable structure, and thin plate (3) is overall rectangular, and thin plate (3) is equipped with through-hole (4), and the inside of fixed plate (2) is equipped with protrusion (5) from top to bottom, and the both ends of thin plate (3) are equipped with notch (6) with protrusion (5) cooperation.

2. A portable test block for evaluating the depth of detection of magnetic particles as claimed in claim 1, wherein The thin plate (3) increases gradually from top to bottom through-hole (4) quantity, and the round hole of adjacent thin plate (3) is attached and located at the same axis.

3. A portable test block for evaluating the depth of detection of magnetic particles as claimed in claim 1, wherein The bottom plate (1) and the fixed plate (2) are made of high-strength, low-magnetic permeability ferromagnetic material.

4. The portable test block for evaluating the depth of magnetic particle detection of claim 1, wherein, The fixed plate (2) is provided with a positioning hole (7), and the bottom of the fixed plate (2) is provided with a fixing block matched with the positioning hole (7). The bottom plate (1) and the fixed plate (2) are detachably connected through the positioning hole (7).

5. The portable test block for evaluating the depth of magnetic particle detection of claim 1, wherein, The shape of the through-hole (4) further includes a triangle and a quadrilateral.

6. A portable test block for evaluating the depth of detection of magnetic particles as claimed in claim 1, wherein, Each of the thin plates (3) is made of different materials.

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