Test block of welding seam detection device

Abstract

The utility model provides a test block of a welding seam detection device, and belongs to the technical field of welding seam detection devices. The test block solves the problem that transverse through holes with all depths cannot be measured and adjusted when a normal probe is used for adjusting the detection sensitivity of an existing test block. The test block of the welding seam detection device comprises a flat test block body, the test block body is polygonal, a plurality of transverse through holes are formed in the test block body in the thickness direction of the test block body, a test block fulcrum shaft is machined on the central axis of the test block body, mounting holes are formed in the two end faces of the test block body, and hanging ring connecting pieces can be fixed in the mounting holes. According to the test block of the welding seam detection device, the test block body can be moved and turned over more conveniently, and the situations of slipping and the like are not prone to occurring.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the welding seam detection device technical field relates to a kind of test blocks of welding seam detection device. BACKGROUND

[0002] In large equipment manufacturing, usually need to weld multiple steel parts, and the quality requirement is higher in welding process, so after welding, it is usually necessary to effectively and quickly nondestructively test the weld.

[0003] The existing welding seam detection device is usually an ultrasonic welding seam detection device, such as Chinese patent application

Application Publication No. CN102841142A

[0004] The probe of the above structure is in the form of a square block. However, during ultrasonic detection, there is usually a lot of coupling agent between the probe and the test block for ultrasonic wave penetration. Currently, the volume of the test block for adjusting the sensitivity of the instrument is large, and the structure of the test block is complex, which is not suitable for fixing with the existing turnover frame. Therefore, manual turning of the test block is required when adjusting the sensitivity. Due to the heavy weight of the test block and the coupling agent on the surface, stable turning and moving operation cannot be performed. UTILITY MODEL CONTENTS

[0005] The utility model aims at the above-mentioned problems existing in the prior art and provides a test block for welding seam detection device. The technical problem to be solved by the utility model is how to solve the problem that the existing test block cannot measure and adjust all the depth of the horizontal through hole when adjusting the detection sensitivity of the straight probe.

[0006] The purpose of the utility model can be achieved by the following technical solutions:

[0007] A test block of a weld detection device, comprising a flat test block body, characterized in that the test block body is polygonal, a plurality of transverse through holes are formed on the test block body along the thickness direction of the test block body, a test block shaft is processed on the central axis of the test block body, mounting holes are formed on the two end faces of the test block body, and a lifting ring connecting piece can be fixed in the mounting holes.

[0008] By setting the test block body as a polygon, and by processing the test block shaft on the central axis of the test block body, the weight of the polygonal test block is greatly reduced, only less than 1 / 3 of the original test block, while achieving the same effect as the existing test block. Meanwhile, the corresponding turnover frame can clamp the test block body through the test block shaft, and the plurality of transverse through holes can be used to adjust the sensitivity of the straight probe within the sound path range of 10mm-150mm. Moreover, since the test block body is large, it is difficult to move stably during movement, so mounting holes are formed on the two end faces of the test block body, and a lifting ring connecting piece can be fixed in the mounting holes, so that the movement and turnover of the test block body are more convenient, and slipping and other situations are less likely to occur.

[0009] In the test block of the weld detection device, the test block body is decagonal, one mounting hole is formed on one side of the test block body, and the other mounting hole is formed on the other side of the test block body.

[0010] By forming two mounting holes on the two sides of the test block body, the test block body can be evenly lifted and rotated when being lifted and turned over, and the decagonal shape greatly reduces the volume and weight of the test block, facilitating the portable movement of the test block body and improving the convenience of turnover, thereby improving the detection efficiency.

[0011] The mounting holes can be threaded holes or clamping holes, etc.

[0012] In the test block of the weld detection device, each transverse through hole is located on the central axis of the opposite side length and the test block body.

[0013] The structure is set so that the position of the transverse through hole is more reasonable, facilitating the detection of ultrasonic waves, conforming to the spherical wave law, and improving the stability and convenience of detection.

[0014] In the test block of the weld detection device, all the transverse through holes gradually approach the central axis of the test block body along the radial direction of the test block body in the clockwise direction, and the distance between the transverse through hole and the corresponding side length increases by an integer multiple.

[0015] The distance between the transverse hole and the corresponding side length can be 10mm, 20mm, 30mm, 40mm and 50mm, and the distance to the opposite side is 110mm, 120mm, 130mm, 140mm, 150mm, so that the distance is an integer increase. When adjusting the sensitivity of the straight probe, the sound path error of the echo of the reflector can be judged in time and accurately.

[0016] In the test block of the weld detection device, the diameters of all the transverse holes are equal.

[0017] Compared with the prior art, the test block of the weld detection device has the advantages that: the mounting holes are arranged on the two end faces of the test block body, the lifting ring bolts can be fixed in the mounting holes, the test block body is helped to move and overturn, so that the movement and overturning of the test block body are more convenient, and the test block detection stability and detection efficiency are improved; the test block shaft is machined on the center axis of the test block, the test block can be conveniently overturned in cooperation with the corresponding overturning frame, so that the sensitivity of the transverse hole with different sound paths can be adjusted in the direction of the horizontal detection face; the decagonal design of the test block is to minimize the volume and reduce the weight under the premise of completing the same function, so that the test block is convenient to transport, carry and move in the detection site. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is the front view of the utility model.

[0019] Figure 2 is the side view of the utility model after the lifting ring connecting piece is assembled.

[0020] In the figure, 1, test block body; 11, transverse hole; 12, test block shaft; 13, mounting hole; 2, lifting ring connecting piece. DETAILED DESCRIPTION

[0021] The following is a specific embodiment of the utility model and is combined with the drawings to further describe the technical scheme of the utility model, but the utility model is not limited to these embodiments.

[0022] As Figure 1 shown, the test block of the weld detection device comprises a test block body 1 in a flat shape.

[0023] Specifically, as Figure 1 and Figure 2As shown, the test block body 1 is a decagon, a plurality of transverse holes 11 are formed on the test block body 1 along the thickness direction of the test block body 1, a test block shaft 12 is machined on the central axis of the test block body 1, mounting holes 13 are formed on the two end faces of the test block body 1, and a lifting ring connecting piece 2 can be fixed in the mounting hole 13, one of the mounting holes 13 is formed on one side of the test block shaft 12, and the other mounting hole 13 is formed on the other side of the test block shaft 12, and the diameters of all the transverse holes 11 are equal.

[0024] By setting the test block body 1 as a polygon, machining the test block shaft 12 on the central axis of the test block body 1, and detecting the same effect as the existing test block, the weight of the polygonal test block is greatly reduced, which is less than 1 / 3 of the original test block 1. At the same time, the corresponding turnover frame can clamp the test block body 1 through the test block shaft 12, and the transverse holes 11 can be set to adjust the sensitivity of the straight probe within the sound path range of 10mm-150mm. And because the test block body 1 is large, it is difficult to move stably during movement, so mounting holes 13 are formed on the two end faces of the test block body 1, and a lifting ring connecting piece 2 can be fixed in the mounting hole 13, so that the movement and turnover of the test block body 1 are more convenient, and slipping and other situations are less likely to occur.

[0025] As shown in Figure 1 each transverse hole 11 is located on the perpendicular bisector of the opposite side length and the central axis of the test block body 1, all the transverse holes 11 gradually approach the central axis of the test block body 1 along the radial direction of the test block body 1 in the clockwise direction, and the distance between the transverse hole 11 and the corresponding side length increases by an integer multiple, and a total of 6 transverse holes 11 have 12 test depths. The corresponding depth values are 10mm, 20mm, 30mm, 40mm, 50mm, 110mm, 120mm, 130mm, 140mm, 150mm, and the coverage range of the artificial reflector meets the requirements.

[0026] Generally, when detecting, the diameter of the straight probe is selected as Ds=20mm, and the length of the near-field region is N=Ds 2 / 4λ=400 / 4×2.36=42.37, when the distance between the disc source axis and the origin is greater than 3N, i.e. 3×42.37=127.11mm, the sound pressure on the disc source axis is similar to the sound pressure of the spherical wave, the sound pressure is inversely proportional to the distance, and it conforms to the spherical wave rule. Therefore, under this detection process, it is not necessary to adjust the test block DAC curve to detect the workpiece at a distance of more than 130mm; when a defect is found, only the size of the defect can be calculated by the sound pressure formula of the corresponding regular reflector. Therefore, the deepest distance of the artificial transverse hole 11 exceeds 130mm to meet most of the needs, and the test block is 150mm.

[0027] The specific embodiments described herein are merely illustrative of the spirit of the present application. Those skilled in the art of the present application can make various modifications or supplements to the described specific embodiments or replace them with similar ways, but will not deviate from the spirit of the present application or exceed the scope defined by the appended claims.

Claims

1. A test block for a weld inspection device, comprising a flat test block body (1), characterized in that, The test block body (1) is polygonal. Multiple transverse through holes (11) are provided on the test block body (1) along the thickness direction. A test block support shaft (12) is machined on the central axis of the test block body (1). Mounting holes (13) are provided on both ends of the test block body (1). A lifting ring connector (2) can be fixed in the mounting hole (13).

2. The test block of the weld inspection device according to claim 1, characterized in that, The test block body (1) is decagonal, with one mounting hole (13) on one side of the test block body (1) and the other mounting hole (13) on the other side of the test block body (1).

3. The test block of the weld inspection device according to claim 2, characterized in that, Each transverse through hole (11) is located on the perpendicular line between the opposite side length and the central axis of the test block body (1).

4. The test block of the weld inspection device according to claim 3, characterized in that, All the transverse through holes (11) can be sequentially moved closer to the central axis of the test block body (1) in a clockwise direction along the radial direction, and the distance between the transverse through holes (11) and the corresponding side length increases in an integer multiple.

5. The test block of the weld inspection device according to claim 1 or 2, characterized in that, All the transverse through holes (11) have the same diameter.

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