Universal defect detection capability verification test block for digital ray detection

Abstract

The utility model discloses a universal defect detection capability verification test block for digital radiographic inspection, which comprises a test block body and a thickness correction base plate, and the test block body is abutted against the thickness correction base plate. Test block drill holes and test block notch grooves are formed in the end, away from the thickness correction base plate, of the test block body, the test block notch grooves are formed in the upper surface of the test block body at intervals, the test block drill holes correspond to the test block notch grooves formed at intervals, and digital rays irradiate the test block drill holes and the test block notch grooves; and verifying the minimum detection capability of the digital ray process for circular defects and the minimum detection capability of the digital ray process for strip-shaped defects. The universal defect detection capability verification test block for digital radiographic inspection provided by the utility model has the advantages that the thickness is very small, the influence caused by different workpiece materials is reduced to the greatest extent, the universal defect detection capability verification test block is applicable to the detection capability verification of workpieces with similar density, the internal defects of the workpieces can be simulated, and the reliability of a detection process is further improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of offshore oil, and in particular relates to a universal defect detection capability verification test block for digital ray detection. Background Art

[0002] At present, in order to improve the reliability and credibility of digital radiographic detection, the digital radiographic detection standard introduces new detection quality indicators based on the standards of conventional radiographic detection. However, to meet the standard quality requirements, the detection capability of digital radiography can only be calculated and understood from a theoretical level, and the defect detection capability of the detection process cannot be intuitively understood. Therefore, it is necessary to use defect detection capability verification test blocks for verification.

[0003] Usually, to ensure the reliability of the verification results, holes are drilled and grooves are cut on the actual workpiece to simulate defects and make test blocks. However, the specifications and materials of the workpieces are different, and each workpiece requires a corresponding verification test block, and the processing cost of the test blocks is huge.

[0004] Therefore, it is urgent to design a universal defect detection capability verification test block for digital X-ray detection to solve the above-mentioned problem of digital X-ray detection process detection capability. Utility Model Content

[0005] In order to solve the technical problem mentioned in the background technology that drilling and grooving on the workpiece to simulate defects to make test blocks, but the specifications and materials of the workpieces are different, each workpiece requires a corresponding verification test block, and the processing cost of the test blocks is huge, a universal defect detection capability verification test block for digital radiographic inspection is provided to solve the problem of digital radiographic inspection process detection capability.

[0006] To achieve the above objectives, the specific technical solutions of the universal defect detection capability verification test block for digital radiographic inspection of the present invention are as follows:

[0007] A universal defect detection capability verification test block for digital radiography includes a test block body and a thickness correction pad. The test block body is abutted on the thickness correction pad. A test block drill hole and a test block groove are provided at one end of the test block body away from the thickness correction pad. The test block grooves are arranged at intervals on the upper surface of the test block body. The test block drill holes correspond to the test block grooves arranged at intervals. Digital rays are irradiated on the test block drill holes and test block grooves to verify the minimum detection capability of the digital radiography process for circular defects and the minimum detection capability of the digital radiography process for strip defects.

[0008] Furthermore, a plurality of test block grooves are spaced apart along the length direction of the test block body, and test block holes are provided in the horizontal direction of the plurality of test block grooves.

[0009] Furthermore, a plurality of test block drill holes are opened in pairs, and the test block drill holes are all circular.

[0010] Furthermore, the diameters of the holes drilled in the multiple test blocks were increased successively, with the diameter range being 0.2 mm to 0.9 mm.

[0011] Furthermore, the groove depths of the plurality of test blocks were increased sequentially, and the groove depth range was 0.2 mm to 0.9 mm.

[0012] Furthermore, the grooves of the multiple test blocks were all 10 mm in length and 0.15 mm in width.

[0013] Furthermore, a thickness correction pad is connected to the lower surface of the test block body to correct the thickness of the test block body.

[0014] Furthermore, 8 pairs of test block drilling holes and 8 test block grooves are opened on the test block body.

[0015] Furthermore, the intervals between adjacent pairs of test block drill holes and test block grooves are both 5 mm.

[0016] Furthermore, in the digital radiographic inspection process, when the thickness of the inspected workpiece is less than 10 mm, the thickness correction pad is stacked with the test block body.

[0017] The universal defect detection capability verification test block for digital radiographic inspection of this utility model has the following advantages:

[0018] Drilling and notching test blocks are used to simulate circular and strip-shaped defects on the surface and interior of workpieces, verifying the minimum defect size and resolution that the inspection process can detect. This allows for compatibility with various workpiece thicknesses, reducing the cost of test block processing. The test blocks used in this application are inherently thin, minimizing the impact of varying workpiece materials. This allows for verification of inspection capabilities on workpieces with similar densities, simulating internal defects, and further improving the reliability of the inspection process. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of a universal defect detection capability verification test block for digital radiographic testing of the present invention;

[0020] Figure 2 This is a side view of a universal defect detection capability verification test block for digital radiographic testing of the present invention;

[0021] Figure 3 A schematic diagram of a test block drilling for a universal defect detection capability verification test block for digital radiographic testing of the present invention;

[0022] Figure 4 This is a schematic diagram of the test block groove of a universal defect detection capability verification test block for digital radiographic inspection of the present invention.

[0023] Description of the marks in the figure:

[0024] 1. Test block body; 2. Thickness correction pad; 3. Test block drilling; 4. Test block notching. DETAILED DESCRIPTION

[0025] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0026] Those skilled in the art will appreciate that, although some embodiments herein include certain features included in other embodiments but not other features, the combination of features from different embodiments is intended to be within the scope of the present invention and to form different embodiments. For example, in the claims, any one of the claimed embodiments may be used in any combination.

[0027] Please refer to the attached Figure 1 To the attached Figure 4 The utility model describes a universal defect detection capability verification test block for digital radiographic inspection.

[0028] like Figure 1 As shown, the universal defect detection capability verification test block for digital radiography in the present invention includes a test block body 1 and a thickness correction pad. The test block body 1 is abutted on the thickness correction pad. A test block bore 3 and a test block groove 4 are provided on the end of the test block body 1 away from the thickness correction pad 2. The test block grooves 4 are spaced apart on the upper surface of the test block body 1. The test block bore 3 corresponds to the spaced apart test block grooves 4. Digital radiation irradiates the test block bore 3 and the test block groove 4 to verify the minimum detection capability of the digital radiography process for circular defects and the minimum detection capability of the digital radiography process for strip defects. The test block bore 3 and the test block groove 4 are used to simulate circular and strip defects on the surface and inside of the workpiece, verifying the minimum size defect that the detection process can detect and its resolution capability. It can be applied to workpieces of various thicknesses in combination with raw materials, reducing the test block processing cost. The thickness of the test block itself is very small, minimizing the impact of different workpiece materials. It can be applied to the detection capability verification of workpieces with similar density, simulating internal defects of the workpiece, and further improving the reliability of the detection process.

[0029] Further, if Figures 1 to 3As shown, a plurality of test block grooves 4 are spaced apart along the length direction of the test block body 1, and a plurality of test block grooves 4 are provided with test block drill holes 3 in the horizontal direction; the plurality of test block drill holes 3 are provided in pairs, and the test block drill holes 3 are all circular; the diameters of the plurality of test block drill holes 3 increase successively, and the diameter range is 0.2 mm-0.9 mm.

[0030] In this embodiment, preferably, the thickness of the test block body 1 is 2 mm, which is used to reduce the impact of the test block thickness on the detection results. The penetration thickness of the ray is the workpiece thickness and the test block thickness. When the test block thickness is small enough, the impact on the detection image will be negligible.

[0031] Preferably, the test block body 1 is provided with a plurality of test block drill holes 3 and test block grooves 4 for verifying the detection capability limit that can be achieved by the digital radiographic detection process.

[0032] Further, if Figure 1 As shown, the depths of the multiple test block grooves 4 increase successively, and the groove depth range is 0.2mm-0.9mm; the lengths of the multiple test block grooves 4 are all 10mm and the widths are 0.15mm; the thickness correction pad 2 is connected to the lower surface of the test block body 1 to correct the thickness of the test block body 1.

[0033] In this embodiment, preferably, a test block hole 3 is drilled on the test block to simulate common circular defects and verify the minimum detection capability of the digital ray process for circular defects; a test block groove 4 is engraved, that is, an electric spark technology is used to engrave grooves on the test block to simulate common strip defects and verify the minimum detection capability of the digital ray process for strip defects.

[0034] Preferably, there are 8 pairs of test block drill holes 3 on the test block body 1, and the drill hole diameters are 0.2mm, 0.3mm, 0.4mm...0.9mm. The drill hole depth is equal to the drill hole diameter and is used to simulate circular defects and verify the minimum circular defect size that can be detected by the digital radiographic detection process. The interval between each pair of drill holes is equal to the drill hole radius and is used to verify the resolution of the digital radiographic detection process, and the interval between adjacent drill hole pairs is 5mm.

[0035] Further, if Figure 1 and Figure 4 As shown, 8 pairs of test block drill holes 3 and 8 test block grooves 4 are opened on the test block body 1; the intervals between adjacent test block drill holes 3 and test block grooves 4 are 5 mm; in the digital radiographic inspection process for the workpiece to be inspected with a thickness less than 10 mm, the thickness correction pad 2 is stacked with the test block body 1.

[0036] In this embodiment, preferably, there are 8 test block grooves 4 on the test block body 1, the groove length is 10 mm, the groove depths are 0.2 mm, 0.3 mm, 0.4 mm...0.9 mm, and the groove width is 0.15 mm, which is used to simulate strip defects and verify the minimum strip defect height that can be detected by the digital X-ray detection process, and the adjacent grooves are spaced 5 mm apart.

[0037] This universal defect detection test block for digital radiographic testing is suitable for proving the capabilities of digital radiographic testing processes for most flat workpieces. Its simulated defect size is sufficient for validating the inspection process for welds, flat plates, and flat forgings and castings.

[0038] The working principle of the universal defect detection capability verification test block of digital radiographic inspection in this utility model is as follows:

[0039] When verifying the digital radiographic inspection process for workpieces with a thickness of less than 10 mm, use a thickness correction pad 2 stacked with the test block body 1, perform direct radiography, and observe the smallest recognizable test block drill hole 3 and test block groove 4 to verify the minimum defect detection capability of the inspection process.

[0040] When verifying the digital radiographic inspection process for workpieces with a thickness greater than or equal to 10 mm, place the test block 1 directly on the workpiece for transillumination, and observe the smallest recognizable test block drill hole 3 and test block groove 4 to verify the minimum defect detection capability of the inspection process.

[0041] The verification test block body 1 and the thickness correction pad can be stacked in a disordered order to simulate the internal defects of the workpiece.

[0042] This universal defect detection capability verification block, based on digital radiographic inspection, simulates circular and strip-shaped defects on the surface and interior of a workpiece through a drilled hole 3 and grooved groove 4. This allows verification of the minimum defect size and resolution that can be detected by the inspection process. This block, combined with the raw materials, can be applied to workpieces of varying thicknesses, reducing the cost of the block. The block itself is very thin, minimizing the impact of varying workpiece materials. This allows verification of inspection capabilities on workpieces with similar densities, simulating internal defects, and further improving the reliability of the inspection process.

[0043] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. Those skilled in the art will appreciate that other variations or modifications can be made based on the above description. It is not necessary and impossible to enumerate all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A universal defect detection capability verification test block for digital radiographic testing, characterized in that: It includes a test block body and a thickness correction pad, the test block body is abutted on the thickness correction pad, and a test block drill hole and a test block groove are provided at one end of the test block body away from the thickness correction pad. The test block grooves are arranged at intervals on the upper surface of the test block body, and the test block drill holes correspond to the test block grooves opened at intervals. Digital rays are used to irradiate the test block drill holes and test block grooves to verify the minimum detection capability of the digital ray process for circular defects and the minimum detection capability of the digital ray process for strip defects.

2. The universal defect detection capability verification test block for digital radiographic inspection according to claim 1 is characterized in that: A plurality of test block grooves are arranged at intervals along the length direction of the test block body, and test block holes are arranged in the horizontal direction of the plurality of test block grooves.

3. The universal defect detection capability verification test block for digital radiographic inspection according to claim 2 is characterized in that: Multiple test block holes are opened in pairs, and all the test block holes are circular.

4. The universal defect detection capability verification test block for digital radiographic inspection according to claim 3 is characterized in that: The diameters of the holes drilled in multiple test blocks increase successively, ranging from 0.2mm to 0.9mm.

5. The universal defect detection capability verification test block for digital radiographic inspection according to claim 2 is characterized in that: The groove depths of multiple test blocks increased successively, and the groove depth range was 0.2 mm to 0.9 mm.

6. The universal defect detection capability verification test block for digital radiographic inspection according to claim 5 is characterized in that: The grooves of multiple test blocks are all 10 mm long and 0.15 mm wide.

7. The universal defect detection capability verification test block for digital radiographic inspection according to claim 1 is characterized in that: The thickness correction pad is connected to the lower surface of the test block body to correct the thickness of the test block body.

8. The universal defect detection capability verification test block for digital radiographic inspection according to claim 2 is characterized in that: There are 8 pairs of test block drilling holes and 8 test block grooves on the test block body.

9. The universal defect detection capability verification test block for digital radiographic inspection according to claim 8, characterized in that: The intervals between adjacent test block drill holes and test block grooves are both 5 mm.

10. The universal defect detection capability verification test block for digital radiographic inspection according to claim 7, characterized in that: Digital radiographic testing process for workpieces with a thickness less than 10mm. The thickness correction pad is stacked with the test block.

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