Multifunctional portable test block for field calibration of ultrasonic flaw detector

Abstract

The utility model belongs to the technical field of ultrasonic tester calibration equipment, and particularly relates to a multifunctional portable test block for field calibration of an ultrasonic flaw detector. The vertical surface is arranged at one end of the test block body, and an included angle is reserved between the vertical surface and the axis of the test block body; the second test block, the first test block and the test block body are integrally arranged; the first test hole is vertically formed in the top surface of the test block body and penetrates through the test block body, and the first test hole is far away from the vertical surface; the second test hole is vertically formed in the top surface of the test block body and penetrates through the test block body, and a horizontal connecting line between the second test hole and the first test hole is perpendicular to the axis of the test block body. The multifunctional test block disclosed by the utility model can be used for calibrating various parameters of an ultrasonic flaw detector, and a worker does not need to replace various test blocks when the instrument needs to be calibrated, so that the burden of the worker is reduced, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of ultrasonic tester calibration equipment, in particular to a multifunctional portable test block for on-site calibration of an ultrasonic flaw detector. Background Art

[0002] Ultrasonic testing generally refers to the technology of using the interaction between ultrasonic waves and workpieces to analyze the reflected, transmitted and scattered echoes, thereby detecting and characterizing the workpiece's macroscopic defects, geometric characteristics, organizational structure and mechanical properties, and then evaluating its specific applicability. Ultrasonic testing is generally performed using an ultrasonic flaw detector.

[0003] When using an ultrasonic flaw detector for ultrasonic testing, it is required to calibrate the various parameter settings of the ultrasonic flaw detector at least every four hours or after each test. However, the existing test blocks have a single function and need to use multiple test blocks during calibration, which increases the burden on staff and reduces work efficiency. Therefore, there is an urgent need for a multifunctional portable test block for on-site calibration of ultrasonic flaw detectors. Utility Model Content

[0004] The utility model aims to provide a multifunctional portable test block for on-site calibration of an ultrasonic flaw detector to solve the above problems.

[0005] To achieve the above purpose, the utility model provides the following solutions:

[0006] Multifunctional portable test block for field calibration of ultrasonic flaw detectors, including:

[0007] Test block body;

[0008] A vertical surface is vertically opened at one end of the test block body, and an angle is left between the vertical surface and the axis of the test block body;

[0009] A second test block fixedly attached to the facade;

[0010] A first test block is fixedly connected above the second test block and to the vertical surface, the top surface of the first test block is lower than the top surface of the test block body, and the second test block, the first test block and the test block body are integrally arranged;

[0011] A first test hole is vertically opened on the top surface of the test block body and penetrates the test block body, and the first test hole is far away from the vertical surface;

[0012] The second test hole is vertically opened on the top surface of the test block body and penetrates the test block body, and a horizontal line between the second test hole and the first test hole is perpendicular to the axis of the test block body.

[0013] Preferably, the test block body has a height of 40 mm and a width of 30 mm, a short side length of 80 mm and a long side length of 105 mm.

[0014] Preferably, the second test block is an arc-shaped block, the arc surface of the second test block is away from the vertical surface, the radius of the second test block is 50 mm, one of the straight edges of the second test block is flush with the short side of the test block body, the other straight edge of the second test block is in contact with the vertical surface, the part of the other straight edge of the second test block extending out of the vertical surface is cut off and the cut surface is flush with the long side of the test block body, and the height of the second test block is 12.5 mm.

[0015] Preferably, the first test block is an arc-shaped block, the arc surface of the first test block is away from the vertical surface, the radius of the first test block is 25 mm, one of the straight edges of the first test block is flush with the short edge of the test block body, the other straight edge of the first test block is in contact with the vertical surface, and the height of the first test block is 12.5 mm.

[0016] Preferably, the diameter of the first test hole is 3 mm, the distance between the axis of the first test hole and the short side of the test block body is 5 mm, and the distance between the axis of the first test hole and the end of the test block body is 20 mm.

[0017] Preferably, the diameter of the second test hole is 3 mm, the distance between the axis of the second test hole and the long side of the test block body is 10 mm, the distance between the axis of the second test hole and the end of the test block body is 20 mm, the distance between the axis of the first test hole and the axis of the second test hole is 15 mm, and the horizontal line connecting the axis of the first test hole and the axis of the second test hole is perpendicular to the axis of the test block body.

[0018] Compared with the prior art, the utility model has the following advantages and technical effects:

[0019] In the utility model, the first test hole and the second test hole are used to calibrate the distance-amplitude curve (DAC curve), or to measure the angle of the oblique probe, the shear wave AVG, and to adjust the sensitivity and defect quantification;

[0020] The first test block and the second test block are used to calibrate the ultrasonic detection sound velocity, calibrate the timing baseline or determine the incident point of the oblique probe;

[0021] The test block body, the first test block and the second test block are used for ultrasonic thickness measurement sound velocity calibration according to GB / T 11344-2021 standard;

[0022] The first test block is used for GB / T 11345-2013 standard ultrasonic testing straight probe horizontal linearity and vertical linearity calibration;

[0023] The multifunctional test block of the utility model can be used to calibrate various parameters of an ultrasonic flaw detector, and the staff does not need to replace various test blocks when the instrument needs to be calibrated, thereby reducing the burden on the staff and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor:

[0025] Figure 1 It is a top view of the utility model;

[0026] Figure 2 It is the front view of the utility model;

[0027] Figure 3 It is a left view of the utility model;

[0028] Figure 4 It is an overall schematic diagram of the utility model;

[0029] Among them, 1. test block body; 2. first test hole; 3. second test hole; 4. facade; 5. first test block; 6. second test block. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0032] Reference Figures 1 to 4 The utility model discloses a multifunctional portable test block for on-site calibration of an ultrasonic flaw detector, comprising:

[0033] A test block body 1; a vertical surface 4, which is vertically opened at one end of the test block body 1, and an angle is left between the vertical surface 4 and the axis of the test block body 1; a second test block 6, which is fixedly connected to the vertical surface 4;

[0034] The first test block 5 is fixedly connected to the upper part of the second test block 6 and to the vertical surface 4. The top surface of the first test block 5 is lower than the top surface of the test block body 1. The second test block 6, the first test block 5 and the test block body 1 are integrally arranged.

[0035] A first test hole 2 is vertically opened on the top surface of the test block body 1 and penetrates the test block body 1, and the first test hole 2 is far away from the vertical surface 4;

[0036] The second test hole 3 is vertically opened on the top surface of the test block body 1 and penetrates the test block body 1 . The horizontal line between the second test hole 3 and the first test hole 2 is perpendicular to the axis of the test block body 1 .

[0037] According to a further optimized solution, the height of the test block body 1 is 40 mm, the width is 30 mm, the short side length of the test block body 1 is 80 mm, and the long side length is 105 mm.

[0038] A further optimized solution is that the second test block 6 is an arc-shaped block, the arc surface of the second test block 6 is away from the vertical surface 4, the radius of the second test block 6 is 50 mm, one of the straight edges of the second test block 6 is flush with the short edge of the test block body 1, the other straight edge of the second test block 6 is in contact with the vertical surface 4, the other straight edge of the second test block 6 extending out of the vertical surface 4 is cut off and the cut surface is flush with the long edge of the test block body 1, and the height of the second test block 6 is 12.5 mm.

[0039] A further optimized solution is that the first test block 5 is an arc-shaped block, the arc surface of the first test block 5 is away from the vertical surface 4, the radius of the first test block 5 is 25 mm, one of the straight edges of the first test block 5 is flush with the short edge of the test block body 1, the other straight edge of the first test block 5 is in contact with the vertical surface 4, and the height of the first test block 5 is 12.5 mm.

[0040] According to a further optimized solution, the diameter of the first test hole 2 is 3 mm, the distance between the axis of the first test hole 2 and the short side of the test block body 1 is 5 mm, and the distance between the axis of the first test hole 2 and the end of the test block body 1 is 20 mm.

[0041] Further optimization scheme, the diameter of the second test hole 3 is 3mm, the distance between the axis of the second test hole 3 and the long side of the test block body 1 is 10mm, the distance between the axis of the second test hole 3 and the end of the test block body 1 is 20mm, the distance between the axis of the first test hole 2 and the axis of the second test hole 3 is 15mm, and the horizontal line connecting the axis of the first test hole 2 and the axis of the second test hole 3 is perpendicular to the axis of the test block body 1.

[0042] Specific usage:

[0043] The distance-amplitude curve (DAC curve) can be calibrated through the first test hole 2 and the second test hole 3. It can also be used to determine the angle of the oblique probe, the shear wave AVG, and adjust the sensitivity and defect quantification. The standard reflector is a Φ3mm×40mm transverse through hole, which can be used for the calibration of oblique probes with a chip size of less than 13*13mm and angles of 70°, 60°, and 45°. Specifically, the probe should be placed so that the center line of the beam is parallel to the side of the test block, and the probe is moved back and forth to find the highest reflected wave of the first test hole 2 or the second test hole 3. At this time, the center line of the sound beam must coincide with the line between the incident point and the center of the circle, that is, the center line of the sound beam is perpendicular to the hole surface. At this time, the value marked by the angle line corresponding to the incident point on the test block is the K value of the oblique probe.

[0044] The curved surfaces of the first test block 5 and the second test block 6 can be used to calibrate the ultrasonic detection sound velocity, calibrate the timing baseline or determine the incident point (front edge, probe delay) of the oblique probe. The specific method is to place the probe at the center of the second test block 6, emit ultrasonic waves to the R50mm arc, and move the probe back and forth until the reflected wave from the R50mm arc surface reaches the highest point. At this time, the point on the probe wedge corresponding to the center of the test block is the probe incident point.

[0045] The height of the second test block 6, the sum of the heights of the first test block 5 and the second test block 6, the height of the test block body 1, and the width of the test block body 1, that is, the thickness intervals of 12.5mm, 25mm, 30mm, and 40mm are used for ultrasonic thickness measurement sound velocity calibration.

[0046] The sum of the heights of the first test block 5 and the second test block 6 is a 25mm thick large flat bottom, which can be used to test horizontal linearity and vertical linearity. For specific methods, refer to JB / T 9214. The straight probe can also be calibrated to adjust the scanning baseline. When using longitudinal wave flaw detection, the known thickness of the test block can be used to adjust the detection range and scanning speed. When the detection range is within 250mm, the probe can be placed on a 25mm thick large flat bottom, so that the fourth bottom echo is at scale four, and the tenth bottom echo is at scale ten. Then scale ten represents the actual detection sound range of 250mm, and the starting zero point is also corrected at the same time.

[0047] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0048] The embodiments described above are only descriptions of the preferred methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.

Claims

1. Multifunctional portable test block for on-site calibration of ultrasonic flaw detector, characterized in that: include: Test block body (1); A vertical surface (4) is vertically arranged at one end of the test block body (1), and an angle is left between the vertical surface (4) and the axis of the test block body (1); A second test block (6) fixedly connected to the vertical surface (4); A first test block (5) is fixedly connected above the second test block (6) and to the vertical surface (4); the top surface of the first test block (5) is lower than the top surface of the test block body (1); the second test block (6), the first test block (5) and the test block body (1) are integrally arranged; A first test hole (2) is vertically opened on the top surface of the test block body (1) and penetrates the test block body (1), and the first test hole (2) is away from the vertical surface (4); The second test hole (3) is vertically opened on the top surface of the test block body (1) and penetrates the test block body (1); a horizontal line between the second test hole (3) and the first test hole (2) is perpendicular to the axis of the test block body (1).

2. The multifunctional portable test block for on-site calibration of ultrasonic flaw detector according to claim 1 is characterized in that: The test block body (1) has a height of 40 mm and a width of 30 mm. The short side of the test block body (1) is 80 mm in length and the long side is 105 mm in length.

3. The multifunctional portable test block for on-site calibration of ultrasonic flaw detector according to claim 1 is characterized in that: The second test block (6) is an arc-shaped block, the arc surface of the second test block (6) is away from the vertical surface (4), the radius of the second test block (6) is 50 mm, one of the straight edges of the second test block (6) is flush with the short edge of the test block body (1), the other straight edge of the second test block (6) is in contact with the vertical surface (4), the part of the other straight edge of the second test block (6) that protrudes from the vertical surface (4) is cut away and the cut surface is flush with the long edge of the test block body (1), and the height of the second test block (6) is 12.5 mm.

4. The multifunctional portable test block for on-site calibration of ultrasonic flaw detector according to claim 1 is characterized in that: The first test block (5) is an arc-shaped block, the arc surface of the first test block (5) is away from the vertical surface (4), the radius of the first test block (5) is 25 mm, one of the straight edges of the first test block (5) is flush with the short edge of the test block body (1), the other straight edge of the first test block (5) is in contact with the vertical surface (4), and the height of the first test block (5) is 12.5 mm.

5. The multifunctional portable test block for on-site calibration of ultrasonic flaw detector according to claim 1 is characterized in that: The diameter of the first test hole (2) is 3 mm, the distance between the axis of the first test hole (2) and the short side of the test block body (1) is 5 mm, and the distance between the axis of the first test hole (2) and the end of the test block body (1) is 20 mm.

6. The multifunctional portable test block for on-site calibration of ultrasonic flaw detector according to claim 1 is characterized in that: The diameter of the second test hole (3) is 3 mm, the distance between the axis of the second test hole (3) and the long side of the test block body (1) is 10 mm, the distance between the axis of the second test hole (3) and the end of the test block body (1) is 20 mm, the distance between the axis of the first test hole (2) and the axis of the second test hole (3) is 15 mm, and the horizontal line connecting the axis of the first test hole (2) and the axis of the second test hole (3) is perpendicular to the axis of the test block body (1).

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