Crack test block for accurately measuring detection depth of magnetic powder

Abstract

The utility model relates to the technical field of nondestructive inspection, in particular to a crack test block for accurately measuring the detection depth of magnetic powder. The device comprises a tray, a plurality of rectangular test blocks are arranged on the tray, grooves are formed in the bottom of the tray, convex blocks are arranged at the bottoms of the test blocks, the test blocks are clamped in the grooves, crack notch grooves are formed in the test blocks, and the crack notch grooves are formed in the middles of the test blocks from shallow to deep; the crack notch grooves of the test blocks are designed to have multi-stage depths, and the depths of the crack notch grooves of the adjacent test blocks are different. By arranging the crack test block with the crack notch groove, the speed of determining the effective depth of the magnetic powder by personnel can be efficiently, conveniently and rapidly increased, the effective depth of the magnetic powder detection can be measured to provide a scanning basis for the magnetic powder detection, the possibility of missing detection of defects is reduced, and the detection accuracy is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to nondestructive testing technical field, concretely relates to a crack test block for accurately measuring magnetic powder detection depth. BACKGROUND

[0002] At present, the measurement method of magnetic powder detection depth is to prepare a series of standard test blocks with different thicknesses, and these test blocks are usually made of high-quality steel to ensure the stability and consistency of their physical properties. For example, a steel rod magnetic powder flaw detection artificial defect test block is disclosed in a Chinese patent with the authorization announcement number CN203365382U. These test blocks are carefully designed and have preset defects such as cracks or holes to simulate various situations that may be encountered in actual detection. Then, a unified magnetic powder flaw detection instrument is used to detect these test blocks. By observing and recording the defect detection capability of the instrument on test blocks of different thicknesses, researchers can preliminarily evaluate and calibrate the detection depth range of the instrument. This step provides an important reference benchmark for subsequent field detection. In actual detection scenarios, in order to more accurately determine the detection depth of the magnetic powder probe, the operator will adopt a strategy of gradually deepening the material surface defects. However, such test blocks can only detect a fixed depth range and cannot adjust the required depth of the test block in a timely manner as needed. SUMMARY

[0003] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a crack test block for accurately measuring magnetic powder detection depth, which can efficiently and conveniently improve the speed of personnel determining the effective depth of magnetic powder.

[0004] The technical scheme of the utility model comprises the following:

[0005] A crack test block for accurately measuring magnetic powder detection depth, comprising a tray, a plurality of test blocks arranged on the tray, the test blocks being rectangular test blocks, the bottom of the tray being provided with a groove, the bottom of each test block being provided with a protrusion, and each test block being clamped in the groove, the test block being provided with a crack groove, and the crack groove being arranged in the middle of the test block from shallow to deep.

[0006] Preferably, the crack groove of each test block is designed to have multiple depths, and the depths of the crack grooves of adjacent test blocks are different.

[0007] Preferably, each test block is provided with a mark at each depth of the crack groove.

[0008] Preferably, the depth of the crack groove is 0.1mm-0.6mm.

[0009] Preferably, the tray is made of a non-magnetic material.

[0010] Preferably, the protrusion at the bottom of each test block and the groove at the bottom of the tray are in interference fit or clearance fit.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] By designing the crack grooves arranged from shallow to deep, the test block can simulate cracks of different depths, thereby allowing the magnetic powder detection instrument to perform depth measurement under a unified standard, and significantly improving the accuracy and reliability of measurement; the crack grooves are subdivided into multiple levels of depth, which can more carefully evaluate the performance of the detection instrument; a mark or scale is arranged at each level of depth of the crack groove, so that the detection result can be directly corresponded to a specific depth value, facilitating the recording, analysis and comparison of performance under different detection conditions; the crack groove part is designed to be detachable, and multiple forms of different depths or different shapes are provided, which makes the test block adapt to various detection requirements and improves its flexibility and versatility. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced as follows, and obviously, other drawings can be obtained by those skilled in the art without creative labor on the premise of not paying creative labor.

[0014] Fig. 1 It is the overall structure schematic diagram of the utility model.

[0015] Fig. 2 It is the overall structure explosion schematic diagram of the utility model.

[0016] Fig. 3 It is the structure schematic diagram of single test block of the utility model

[0017] In the drawing: 1, tray;2, test block;3, groove;4, convex block;5, crack groove. DETAILED DESCRIPTION

[0018] In order to make the personnel in the technical field better understand the technical scheme in the utility model, the technical scheme in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model, obviously, the described embodiment is only a part of the embodiment of the utility model, not all the embodiment. Based on the embodiment in the utility model, all other embodiments obtained by those skilled in the art without creative labor should belong to the protection scope of the utility model.

[0019] EMBODIMENT

[0020] As Figs. 1-3As shown, the present embodiment provides a crack test block 2 for precise measurement of magnetic powder detection depth, which specifically includes a rectangular tray 1 with multiple test blocks 2 arranged in an orderly manner on the surface of the tray 1. The test blocks 2 are designed in a rectangular shape for easy placement and identification, and also ensure stability and accuracy during the detection process. The bottom of the tray 1 is provided with a groove 3, and the bottom of each test block 2 is correspondingly equipped with a protrusion 4. This design allows the test block 2 to be firmly and accurately clamped in the groove 3 of the tray 1, effectively preventing displacement or shaking during the detection process, thereby improving the accuracy of the measurement.

[0021] Further, each test block 2 is provided with crack grooves that gradually extend from the middle of the test block 2, from shallow to deep, simulating different depths of cracks that may occur in actual workpieces. Such a design not only helps to evaluate the sensitivity of magnetic powder detection technology, but also helps detection personnel better understand and identify the performance characteristics of different depth cracks in magnetic powder detection.

[0022] In order to provide a more comprehensive detection range and higher accuracy, the crack grooves of the test block 2 are designed to be multi-level depth, and the crack groove depths of adjacent test blocks 2 are not the same. This hierarchical design allows the test block 2 to cover a wider range of crack depths, thereby meeting a variety of detection needs.

[0023] In order to facilitate detection personnel to quickly and accurately identify the depth of the crack groove on each test block 2, the test block 2 is provided with clear markings at each level of the crack groove depth. These markings can be numbers, letters, or other easily identifiable symbols, which provide a visual reference for detection personnel, greatly improving detection efficiency and accuracy.

[0024] The depth range of the crack groove is carefully set to 0.1mm to 0.6mm, which covers the crack depths that may be encountered in most industrial applications, making the test block 2 widely applicable and practical.

[0025] In addition, the tray 1 is made of non-magnetic material, which avoids interference of the tray 1 itself with the magnetic powder detection process, ensuring the accuracy and reliability of the detection results.

[0026] In terms of the cooperation between the protrusion 4 at the bottom of the test block 2 and the groove 3 at the bottom of the tray 1, two options of interference fit or clearance fit are provided. Interference fit can provide a tighter fixing effect, suitable for detection scenarios that require higher stability; while clearance fit facilitates quick installation and removal of the test block 2, suitable for detection environments that require frequent replacement of test blocks 2. This flexible choice meets the needs of different detection scenarios, further improving the practicality and convenience of the test block 2.

[0027] Working principle:

[0028] In use, the test block 2 simulates different depths of cracks that may occur in actual workpieces by pre-setting multiple levels of depths, deepening step by step and different adjacent depths of crack grooves on the rectangular test block 2. When performing magnetic particle detection, magnetic particles will be attracted to the crack to form magnetic marks, and the detector can visually judge and measure the approximate depth range of the crack in the actual workpiece by observing and comparing the display of these magnetic marks on the crack grooves of the test block 2. At the same time, each level of crack groove depth on the test block 2 is provided with clear markings, providing a more accurate reference for detection. In addition, the test block 2 is stably installed through the protrusion 4 at the bottom thereof and the groove 3 on the non-magnetic tray 1, and this design not only ensures the stability and accuracy of the test block 2 during detection, but also facilitates the quick replacement and repeated use of the test block 2.

[0029] Although the present application has been described in detail with reference to the preferred embodiments, the present application is not limited thereto. Various equivalent modifications or replacements can be made to the embodiments of the present application by those skilled in the art without departing from the spirit and essence of the present application, and these modifications or replacements shall be within the scope of the present application. Any person skilled in the art within the technical scope disclosed by the present application can easily think of changes or replacements, which shall be within the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A crack test block for accurately measuring the depth of detection of magnetic particles, characterized by, The utility model relates to a test block tray, including tray (1), a plurality of test blocks (2) are arranged on tray (1), the test block (2) is rectangular test block (2), the bottom of tray (1) is equipped with recess (3), the bottom of test block (2) is equipped with lug (4), test block (2) is clamped in recess (3), be equipped with crack groove on test block (2), crack groove is set up in test block (2) middle part from shallow to deep.

2. The crack test block for accurately measuring the depth of a magnetic particle detection according to claim 1, wherein The crack groove of the test block (2) is designed to have multiple depths, and the depths of the crack grooves of adjacent test blocks (2) are different.

3. The crack test block for accurately measuring the depth of a magnetic particle detection according to claim 2, wherein The test block (2) is provided with a mark at each level of the crack groove.

4. The crack test block for accurately measuring the depth of a magnetic particle detection according to claim 1, wherein The depth of the crack groove is 0.1mm-0.6mm.

5. The crack test block for accurately measuring the depth of a magnetic particle detection according to claim 1, wherein The tray (1) is made of non-magnetic material.

6. The crack test block for accurately measuring the depth of a magnetic particle detection according to claim 1, wherein The lug (4) at the bottom of the test block (2) and the recess (3) at the bottom of the tray (1) are in interference fit or clearance fit.

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