Standard sample for verification of multi-material integrated eddy current flaw detector

Abstract

The utility model discloses a standard sample for verification of a multi-material integrated eddy current flaw detector, which comprises a sample body, the sample body is provided with a first material sample part and a second material sample part, and a vacuum diffusion welding belt is arranged between the first material sample part and the second material sample part. The eddy current flaw detector test block has the advantages that the structure is simple, the use is convenient, the problems that a single material test block only supports single material calibration and cannot comprehensively and accurately verify / calibrate an eddy current flaw detector are solved, and meanwhile, a multi-material scene in actual detection can be simulated.

Description

Technical Field

[0001] This utility model relates to the field of metrological calibration technology for nondestructive testing instruments, specifically to a standard sample for the calibration of a multi-material integrated eddy current flaw detector. Background Technology

[0002] During the verification / calibration process of eddy current flaw detectors, standard samples must be used to verify the lift-off effect, edge effect, tilt performance, etc. of the eddy current flaw detector.

[0003] Currently available standard cone test blocks are all made of a single material, and single-material calibration cannot comprehensively and accurately verify / calibrate the eddy current flaw detector.

[0004] Chinese patent CN202022096473.X discloses a test block for eddy current testing of welds. The test block consists of a first test block and a second test block. Both the first and second test blocks are made of the same material as the testing component. It only supports single-material calibration. Using a single-material standard sample cannot comprehensively and accurately verify / calibrate the eddy current tester. In addition, the test block has no scale lines and must be used with a steel ruler, which leads to large errors in the test results and makes the verification process more complicated.

[0005] Therefore, how to provide a standard sample for the calibration of a multi-material integrated eddy current flaw detector is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0006] In view of this, the present invention provides a standard sample for the verification of an integrated multi-material eddy current flaw detector, which can solve the problems of existing standard samples having single material, incomplete functions, and inconvenience of use, and can quickly and conveniently realize the verification / calibration of items such as lift-off effect, edge effect, and tilt performance of the eddy current flaw detector.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a standard sample for the calibration of a multi-material integrated eddy current flaw detector, comprising a sample body, wherein the sample body has a first material sample part and a second material sample part, a vacuum diffusion welding strip is provided between the first material sample part and the second material sample part, and multiple artificial defects are respectively provided on the first material sample part and the second material sample part.

[0008] The beneficial effects of this utility model are: the sample body is composed of a first material sample part and a second material sample part. The sample parts of different materials can comprehensively and accurately verify / calibrate the eddy current flaw detector. The sample parts of different materials are connected together by vacuum diffusion welding, which is seamless and can also meet the calibration needs of multiple occasions and multiple materials.

[0009] Preferably, scale lines are provided on one side edge of the first material sample portion and one side edge of the second material sample portion.

[0010] The resulting technical effect is that scale lines are set on the edge of the sample body. In specific implementation, the scale lines are high-precision scale lines. When in use, the high-precision scale lines on the sample can provide a measurement reference. There is no need to use it with a steel ruler. It is convenient, accurate and easy to use.

[0011] Preferably, one end of the first material sample portion is provided with a first connecting slope, one end of the second material sample portion is provided with a second connecting slope, and a vacuum diffusion welding strip is provided between the first connecting slope and the second connecting slope.

[0012] The resulting technical effect is that, in order to improve the connection between the first material sample part and the second material sample part, vacuum diffusion welding is performed by relying on the first connecting slope and the second connecting slope, thereby ensuring the structural integrity of the sample body.

[0013] Preferably, the top surface of the first material sample portion is provided with a first artificial defect and a second artificial defect, the first artificial defect and the second artificial defect are spaced apart, and the first artificial defect or the second artificial defect is spaced apart from the other end of the first material sample portion.

[0014] The resulting technical effect is that the first and second artificial defects are spaced apart and are also spaced apart from the edge of the test block, thereby ensuring the realization of the calibration process.

[0015] Preferably, the top surface of the second material sample portion is provided with a third artificial defect and a fourth artificial defect, the third artificial defect and the fourth artificial defect are spaced apart, and the third artificial defect or the fourth artificial defect is spaced apart from the other end of the second material sample portion.

[0016] The resulting technical effect is that the third and fourth artificial defects are spaced at a necessary distance, and they are also spaced at a necessary distance from the edge of the second material sample, so as to ensure the realization of the calibration process.

[0017] Preferably, both the first material sample portion and the second material sample portion are metal alloy blocks.

[0018] The resulting technical effect is that the first material sample section and the second material sample section are different metal alloys, which can simulate the multi-material scenarios in actual testing and can comprehensively and accurately verify / calibrate the eddy current flaw detector. Attached Figure Description

[0019] Figure 1 This is a structural diagram of a standard sample for the calibration of a multi-material integrated eddy current flaw detector according to this utility model;

[0020] Figure 2 This is a side view of a standard sample for the calibration of a multi-material integrated eddy current flaw detector according to this utility model;

[0021] Figure 3 This is a schematic diagram showing the width of artificial defects on a standard sample used for the calibration of a multi-material integrated eddy current flaw detector according to this utility model.

[0022] Figure 4 This is a schematic diagram of the artificial defect depth marking on the first material sample part of the standard sample used for the calibration of a multi-material integrated eddy current flaw detector according to this utility model.

[0023] Figure 5 This is a schematic diagram of the artificial defect depth marking on the second material sample part of the standard sample used for the calibration of a multi-material integrated eddy current flaw detector according to this utility model.

[0024] 1 First material sample section, 2 Second material sample section, 3 Vacuum diffusion welding strip, 4 Scale line, 5 First artificial defect, 6 Second artificial defect, 7 Third artificial defect, 8 Fourth artificial defect. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] See appendix to this utility model Figures 1 to 5 According to an embodiment of the present invention, a standard sample for the calibration of a multi-material integrated eddy current flaw detector includes a sample body, the sample body having a first material sample part 1 and a second material sample part 2. The first material sample part 1 is an aluminum alloy standard sample, the selected material being LY12CZ, and the second material sample part 2 is a steel standard sample, the selected material being 30CrMo. A vacuum diffusion welding strip 3 is provided between the first material sample part 1 and the second material sample part 2 to achieve gapless bonding of dissimilar metals. Multiple artificial defects are respectively provided on the first material sample part 1 and the second material sample part 2.

[0027] Furthermore, high-precision scale lines 4 are provided on one side edge of the first material sample section 1 and one side edge of the second material sample section 2. When verifying the sensitivity of the eddy current flaw detector, the verification procedure requires that the distance between the center of the probe coil and the edge of the sample and the artificial defect should not be less than 10mm. At the same time, when verifying the edge effect of the eddy current flaw detector, it is required that the center of the probe coil be moved to 3mm from the edge of the standard sample. At this time, it is convenient to use the high-precision scale lines on the edge of the test block for quick measurement and reference, without the need for a steel ruler, which is convenient and accurate.

[0028] Furthermore, in order to improve the connectivity of dissimilar metal samples, one end of the first material sample part 1 is provided with a smooth first connecting slope, and one end of the second material sample part 2 is provided with a smooth second connecting slope. A vacuum diffusion welding strip 3 is provided between the first connecting slope and the second connecting slope. The sample body can form an L-shaped structure, which can also meet the testing needs of multiple material scenarios in actual use.

[0029] Specifically, the top surface of the first material sample part 1 is provided with a first artificial defect 5 and a second artificial defect 6. The first artificial defect 5 and the second artificial defect 6 are spaced apart by a distance of not less than 22 mm. The first artificial defect 5 or the second artificial defect 6 is spaced apart from the other end of the first material sample part 1 by a distance of not less than 22 mm.

[0030] It should be noted that both the first and second artificial defects are long groove structures with a groove width L1 of 0.12 mm, a groove depth d1 of 0.12 mm, and a groove depth d2 of 0.5 mm.

[0031] Furthermore, the top surface of the second material sample part 2 is provided with a third artificial defect 7 and a fourth artificial defect 8, the third artificial defect 7 and the fourth artificial defect 8 are spaced apart, the spaced distance should not be less than 22mm, the third artificial defect 7 or the fourth artificial defect 8 is spaced apart from the other end of the second material sample part 2, the spaced distance should not be less than 22mm.

[0032] It should be noted that the third and fourth artificial defects are both long groove structures, with a groove width L2 of 0.12 mm, a groove depth d3 of 0.12 mm, and a groove depth d4 of 0.5 mm.

[0033] In this embodiment, the main body dimensions of the first material sample part and the second material sample part are the same, with a length of 105mm, a width of 25mm, and a thickness of 6.3mm.

[0034] The apparatus and methods disclosed in the embodiments are described simply because they correspond to the methods disclosed in the embodiments. For relevant details, please refer to the method section.

[0035] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A standard specimen for calibrating a multi-material integrated eddy current flaw detector, comprising a specimen body, characterized in that, The sample body has a first material sample part (1) and a second material sample part (2), a vacuum diffusion welding strip (3) is provided between the first material sample part (1) and the second material sample part (2), and multiple artificial defects are provided on the first material sample part (1) and the second material sample part (2).

2. The standard sample for calibration of a multi-material integrated eddy current flaw detector according to claim 1, characterized in that, Graduation lines (4) are provided on one side edge of the first material sample part (1) and one side edge of the second material sample part (2).

3. The standard sample for calibration of a multi-material integrated eddy current flaw detector according to claim 1, characterized in that, One end of the first material sample part (1) is provided with a first connecting slope, and one end of the second material sample part (2) is provided with a second connecting slope. A vacuum diffusion welding strip (3) is provided between the first connecting slope and the second connecting slope.

4. The standard sample for calibration of a multi-material integrated eddy current flaw detector according to claim 3, characterized in that, The top surface of the first material sample part (1) is provided with a first artificial defect (5) and a second artificial defect (6), the first artificial defect (5) and the second artificial defect (6) are spaced apart, and the first artificial defect (5) or the second artificial defect (6) is spaced apart from the other end of the first material sample part (1).

5. The standard sample for calibration of a multi-material integrated eddy current flaw detector according to claim 3, characterized in that, The top surface of the second material sample part (2) is provided with a third artificial defect (7) and a fourth artificial defect (8), the third artificial defect (7) and the fourth artificial defect (8) are spaced apart, and the third artificial defect (7) or the fourth artificial defect (8) is spaced apart from the other end of the second material sample part (2).

6. A standard sample for calibrating a multi-material integrated eddy current flaw detector according to any one of claims 1-5, characterized in that, Both the first material sample part (1) and the second material sample part (2) are metal alloy blocks.

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