Ultrasonic testing block, block frame and testing structure

Abstract

The application discloses an ultrasonic testing test block, a test block frame and a testing structure, and aims to shorten the testing time and improve the efficiency of ultrasonic water immersion testing. The ultrasonic testing test block comprises a cylindrical body, the body comprises a bottom end face, a top end face and an arc-shaped outer circumferential face of an outer periphery, a boss is arranged on the top end of the body and protrudes outward in the radial direction, the boss comprises an upper surface located above and a lower surface located below, the upper surface of the boss is coplanar with the top end face of the body, and the lower surface is a plane parallel to the upper surface. The ultrasonic testing test block uses the boss as a support table, the boss is used for being hung on the test block frame, the lower surface of the boss is used as a support surface, the upper surfaces of the bosses are in the same plane after the ultrasonic testing test blocks are hung in a row, there is no height difference between the top end faces of the test blocks, when a probe is moved from above one test block to above another test block, the probe only needs to be translated, and it is not necessary to adjust the water distance upward, and therefore the testing efficiency is greatly improved.

Description

Technical Field

[0001] This invention belongs to the field of ultrasonic testing, specifically an ultrasonic testing test block, test block holder, and testing structure for automated ultrasonic water immersion testing of discs, rings, and slabs. Background Technology

[0002] To ensure the internal quality of disc, ring, and slab-type aerospace forgings, ultrasonic testing is required before assembly. The primary testing method is longitudinal wave direct-incident water immersion. Flat cylindrical test blocks with flat bottoms are essential auxiliary materials for ultrasonic testing, used for adjusting the sensitivity and assessing defects.

[0003] During ultrasonic water immersion testing, flat cylindrical test blocks with flat bottoms and holes of the same material as the product being tested or of a material permitted by standards need to be selected to create DAC / TCG curves for sensitivity setting. Each curve requires 15 to 19 test blocks. To ensure that the sensitivity of the DAC / TCG curves meets the testing requirements, the testing standard stipulates that each test block of the DAC / TCG curve must be calibrated individually before each shift's testing and after the ultrasonic water immersion testing system has been running continuously for 2 hours.

[0004] In each set of test blocks, the length of each block varies. The length of test blocks in the domestic standard ranges from 17.5mm to 135mm, while the length in the American standard ranges from 20.65mm to 165.10mm. The length of each test block increases sequentially according to the rules of the respective standard. The structure of the test blocks in the domestic standard is as follows: Figure 1 As shown, the structure of the test block in the US standard is similar to that in the domestic standard. During ultrasonic water immersion testing, the test blocks are placed on the test block platform from low to high, with the centers of the end faces of the test blocks aligned on the same line, as shown. Figure 2 As shown. When creating and verifying DAC / TCG curves, the probe needs to be moved sequentially over each probe to collect data. During data collection, the distance (water distance) from the probe tip (wafer) to the surface of the test block is the same. Therefore, when moving the probe from one test block to another, to ensure the water distance, the probe needs to move upwards. To prevent collisions with the test blocks during movement, in actual production, the probe is generally moved upwards first, and then horizontally. Creating a DAC / TCG curve takes approximately 15-20 minutes, and verifying one takes approximately 10-15 minutes.

[0005] The current operating method has the following shortcomings:

[0006] 1. When moving the probe from one test block to another, it is necessary to first raise the probe to a safe distance, then move the probe horizontally, and finally adjust the probe up and down until the water distance meets the requirements. During each probe movement, the time spent moving it to the safe position and adjusting the water distance accounts for a significant portion of the time, directly prolonging the time for DAC / TCG curve generation and calibration, and reducing detection efficiency.

[0007] 2. If the probe is not moved upwards to a safe distance before being moved, it may collide with the test block. This problem is frequently encountered in actual production. The ultrasonic immersion test probe is a high-precision and expensive electronic component. Impact may damage the probe, reduce its accuracy, or even render it unusable, thus shortening its lifespan. After an impact, the ultrasonic immersion test system will trigger an emergency stop protection program. Upon recovery, all test parameters need to be reset and adjusted from scratch, extending the time for DAC / TCG curve generation and calibration, and reducing test efficiency. Summary of the Invention

[0008] The purpose of this invention is to solve the problems of long DAC / TCG curve generation and calibration time and low detection efficiency in traditional ultrasonic water immersion testing. It provides an ultrasonic testing test block, test block holder and testing structure to shorten the testing time and improve the efficiency of ultrasonic water immersion testing.

[0009] The technical solution adopted in this invention is: an ultrasonic testing test block, comprising a cylindrical body, the body comprising a bottom end face, a top end face, and an outer arc-shaped outer circumferential surface, and a boss protruding radially outward at the top end of the body, the boss comprising an upper surface located above and a lower surface located below, the upper surface of the boss being coplanar with the top end face of the body, and the lower surface being a plane parallel to the upper surface.

[0010] Furthermore, the protrusion is continuously arranged around the outer periphery of the body.

[0011] Furthermore, a flat-bottomed hole is provided at the center of the bottom end face of the body.

[0012] Furthermore, the diameter of the body is d, and the diameter of the boss is D, where D = d + n, and 1 mm ≤ n ≤ 30 mm.

[0013] An ultrasonic testing test block holder includes a frame, the frame including a top surface, a bottom surface and four sides that are parallel to each other, the top surface and the bottom surface being parallel to each other;

[0014] The frame is equipped with two parallel and straight-lined hanging slots arranged at intervals, with the hanging slots running from the top surface to the bottom surface.

[0015] The suspension groove is adapted to the body of the test block and is matched with the boss for limiting.

[0016] The ultrasonic testing structure includes ultrasonic testing test blocks and ultrasonic testing test block holders; the test blocks are inserted into the suspension slots of the holder in order from shortest to longest, and the lower surface of the protrusion of each test block is in close contact with the top surface of the holder.

[0017] Furthermore, a row of test blocks in each suspension slot abuts against the same side of the suspension slot.

[0018] The beneficial effects of the present invention are as follows: The ultrasonic testing test block disclosed in the present invention has a boss that protrudes outward along its radial direction at the top of the main body. The boss includes an upper surface located above and a lower surface located below. The upper surface of the boss is coplanar with the top surface of the main body, and the lower surface is a plane parallel to the upper surface. The boss serves as a support platform for suspending the test block holder. Its lower surface acts as a support surface, ensuring that the upper surfaces of the bosses are on the same plane when the ultrasonic testing test blocks are suspended in a row. Since the upper surface of the boss is coplanar with the top surface of the main body, the top surfaces of the test blocks are also on the same plane. Because there is no height difference between the top surfaces of the test blocks, when the probe moves from above one test block to another, only the probe needs to be moved horizontally; there is no need to adjust the water distance upwards. Compared to traditional ultrasonic testing, this eliminates the step of adjusting the water distance vertically, thus saving time. Creating a DAC / TCG curve takes approximately 10 minutes, and calibrating one takes approximately 5-10 minutes, resulting in an average time saving of 10 minutes per test, significantly improving testing efficiency. Furthermore, the distance between the probe and all test blocks is the same, eliminating the risk of probe collision during probe movement, ensuring probe lifespan, and avoiding the need to reset and adjust testing parameters due to probe collisions, thus guaranteeing testing efficiency. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the existing technical structure of the test block;

[0020] Figure 2 This is a schematic diagram of existing ultrasonic testing technology.

[0021] Figure 3 This is a front view of the test block disclosed in this invention;

[0022] Figure 4 This is a bottom view of the test block disclosed in this invention;

[0023] Figure 5 This is a schematic diagram of the test block holder structure disclosed in this invention;

[0024] Figure 6 This is a top view of the test block being placed on the test block holder as disclosed in this invention;

[0025] Figure 7 This is a schematic diagram of the ultrasonic testing process disclosed in this invention.

[0026] In the figure, the main body is 1, the bottom end face is 1A, the top end face is 1B, the outer circumferential surface is 1C, the central axis is 1D, the boss is 2, the upper surface is 2A, the lower surface is 2B, the flat bottom hole is 5, the frame is 3, the top surface is 3A, the bottom surface is 3B, the side surface is 3C, the suspension groove is 4, and the ultrasonic immersion probe is 6. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings:

[0028] In this invention, the terms "upper," "lower," "top," and "bottom," etc., used to indicate direction, are all indicated by the appendix. Figure 3 Or attached Figure 7 The usage status shall prevail.

[0029] Traditional ultrasonic testing blocks, such as Figure 3 and Figure 4 As shown, the test block includes a cylindrical body 1, which comprises a bottom surface 1A, a top surface 1B, and an outer arc-shaped circumferential surface 1C, meaning the outer circumferential surface 1C extends uniformly along its axial direction. Test blocks with this structure can only be placed on a flat test block platform for testing. The top surface 1B of the test block serves as the ultrasonic wave incident surface, thus ensuring that the ultrasonic wave incident surfaces of each test block on the test block platform are at different heights.

[0030] When creating and calibrating DAC / TCG curves, the probe needs to be moved sequentially above each test block to collect data. During data collection, the distance (water distance) from the probe tip (chip) to the top surface 1B of the test block is constant. Therefore, in traditional ultrasonic testing, when moving the probe from one test block to another, the probe needs to move upwards to maintain the water distance. To prevent collisions with the test blocks during movement, in actual production, the probe is usually moved upwards first, and then horizontally. Creating a DAC / TCG curve takes approximately 15-20 minutes, and calibrating one takes approximately 10-15 minutes.

[0031] In order to shorten the probe movement time and reduce the risk of collision between the probe and the test block, the ultrasonic testing test block disclosed in this invention has a boss 2 that protrudes outward along the radial direction at the top of the body 1. The boss 2 includes an upper surface 2A located above and a lower surface 2B located below. The upper surface 2A of the boss 2 is coplanar with the top surface 1B of the body 1, and the lower surface 2B is a plane parallel to the upper surface 2A. The boss 2 serves as a support platform for suspending the test block rack. The lower surface 2B of the boss 2 acts as a support surface, ensuring that when the ultrasonic testing test blocks are suspended in a row, the upper surface 2A of the boss 2 is on the same plane. Since the upper surface 2A of the boss 2 is coplanar with the top surface 1B of the body 1, the top surfaces 1B of the test blocks are also on the same plane. Because there is no height difference between the top surfaces 1B of each test block, when the probe moves from above one test block to above another, only the probe needs to be moved horizontally, without needing to adjust the water distance upwards. Compared with traditional ultrasonic testing test blocks, this eliminates the step of adjusting the water distance upwards and downwards, thus saving time. It takes about 10 minutes to create a DAC / TCG curve and about 5-10 minutes to calibrate a DAC / TCG curve, saving an average of 10 minutes per test, which greatly improves the testing efficiency.

[0032] The ultrasonic testing block disclosed in this invention comprises: Figure 1 The standard test block shown has all the functions of ultrasonic water immersion testing, and can also be used for ultrasonic contact testing.

[0033] The top surface 1B (incident surface) of all test blocks is on the same horizontal plane, and the distance between the ultrasonic immersion probe and the test block is fixed, which greatly reduces the risk of collision between the probe and the test block during movement, ensuring safe production; the emergency stop protection program will not be triggered due to the collision between the probe and the test block, thus avoiding the need to restart the DAC / TCG curve production and verification work, avoiding wasted testing time, and ensuring testing efficiency; the probe will not be damaged due to the collision between the probe and the test block, thus extending the service life of the ultrasonic immersion probe.

[0034] The boss 2 can be two, three, or four pieces evenly distributed around the outer periphery of the body 1. For ease of manufacturing, preferably, the boss 2 is continuously arranged around the outer periphery of the body 1. The boss 2 can be directly obtained by machining, and the machining steps are simple, which also helps to ensure that the lower surface 2B of the boss 2 is perpendicular to the central axis 1D of the body 1.

[0035] Preferably, a flat-bottomed hole 5 is provided at the center of the bottom end face 1A of the body 1.

[0036] During processing, a small chamfer will exist between the outer circumferential surface 1C of the body 1 and the lower surface 2B of the boss 2. The presence of this chamfer causes the boss 2 to be unable to be suspended flat on the test block holder. In order to increase the area of ​​the plane and improve the stability and reliability of the test block support, preferably, the diameter of the body 1 is d and the diameter of the boss 2 is D, where D = d + n, and 1 mm ≤ n ≤ 30 mm.

[0037] Traditionally, a test block support is used, with the bottom surface 1A of the test block placed on the surface of the support. This results in a height difference between the top surface 1B of the test block and the bottom surface 1B of the test block. In this invention, as... Figure 5 As shown, the ultrasonic testing test block holder includes a frame 3, which comprises a top surface 3A, a bottom surface 3B, and four side surfaces 3C that are parallel to each other. The top surface 3A and the bottom surface 3B are parallel to each other. Two parallel and linearly extending suspension grooves 4 are arranged at intervals on the frame 3, and the suspension grooves 4 extend from the top surface 3A to the bottom surface 3B. The suspension grooves 4 are adapted to the body 1 of the test block, that is, the body 1 of the test block can be inserted into the suspension grooves 4. The diameter of the body 1 is required to be slightly smaller than the width of the suspension grooves 4. The suspension grooves 4 are also limited by a boss 2, meaning that the boss 2 is suspended on the top surface 3A of the frame 3 on both sides of the suspension grooves 4.

[0038] The suspension groove 4 is for the body 1 of the test block to pass through. In use, as... Figure 6 and Figure 7 As shown, the bottom end face 1A of the body 1 of the test block is inserted downward into the suspension groove 4, and the lower surface 2B of the top boss 2 of the body 1 is suspended on the top surface 3A of the frame 3 on both sides of the suspension groove 4, so that the test block is in a suspended state and the top surface 1B of the test block is on the same horizontal plane.

[0039] The ultrasonic testing structure includes ultrasonic testing test blocks and an ultrasonic testing test block holder. The test blocks are inserted into the suspension slots 4 of the holder 3 in ascending order of length, and the lower surface 2B of the protrusion 2 of each test block is in close contact with the top surface 3A of the holder 3. All test blocks in a row in each suspension slot 4 abut against the same side of the suspension slot 4, which ensures that the center of the top surface 1B of all test blocks in a row is on the same straight line.

Claims

1. A detection structure for ultrasonic testing, characterized by: The test block for ultrasonic detection and the test block rack are provided. The test block for ultrasonic detection comprises a cylindrical body (1), the body (1) comprises a bottom end face (1A) at the bottom end, a top end face (1B) at the top end and a circular arc outer circumferential face (1C) at the outer periphery, a boss (2) is arranged at the top end of the body (1) and protrudes outward in the radial direction, the boss (2) comprises an upper surface (2A) above and a lower surface (2B) below, the upper surface (2A) of the boss (2) is coplanar with the top end face (1B) of the body (1), the lower surface (2B) is a plane parallel to the upper surface (2A), and the lower surface (2B) is perpendicular to the central axis (1D) of the body (1); a flat-bottom hole (5) is arranged at the center of the bottom end face (1A) of the body (1); the diameter of the body (1) is d, the diameter of the boss (2) is D, D = d + n, 1mm ≤ n ≤ 30mm; The test block rack comprises a rack body (3), the rack body (3) comprises a top face (3A), a bottom face (3B) and a side face (3C) around the periphery, the top face (3A) and the bottom face (3B) are parallel to each other; Two sets of suspension grooves (4) are arranged on the rack body (3), the suspension grooves (4) are parallel to each other and extend linearly, and the suspension grooves (4) pass through the top face (3A) and the bottom face (3B); The suspension grooves (4) are matched with the body (1) of the test block, and the boss (2) is limited in position; The test blocks are sequentially inserted into the suspension grooves (4) of the rack body (3) in the order from short to long, the lower surface (2B) of the boss (2) of each test block is closely attached to the top face (3A) of the rack body (3), and the top end face (1B) of each test block is at the same horizontal plane; the test blocks in each suspension groove (4) are all abutted against the same side of the suspension groove (4), so that the centers of the top end faces (1B) of all the test blocks in a row are at the same straight line.

2. The detection structure for ultrasonic testing according to claim 1, characterized by: The boss (2) is continuously arranged around the outer periphery of the body (1) for one turn.

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