A sample bar for a combined eddy current and ultrasonic inspection apparatus

Abstract

The utility model discloses a kind of sample bar parts of eddy current ultrasonic combined flaw detection equipment, sample bar part is metal bar, diameter is 2-100mm, and 3 artificial grooves and 6 flat bottom holes are equipped on flaw detector sample bar;The length direction of 3 artificial grooves is parallel with the central axis of flaw detector sample bar, and 3 artificial grooves are respectively located at the head, middle and tail of metal bar, for the calibration of near-surface defect of ultrasonic flaw detection;In 6 flat bottom holes, 3 flat bottom holes are used for the calibration of internal defect of ultrasonic flaw detection, and 3 flat bottom holes are used for the calibration of surface defect of eddy current detection.The flaw detector sample bar of the utility model solves the problem that sample bar is disposable general eddy current and ultrasonic flaw detection system when eddy current ultrasonic combined flaw detector is calibrated, simultaneously, artificial groove and flat bottom hole are combined on one test block bar, internal defect can be detected to reach perfect combination, shorten the time of equipment calibration, and the combination of two test blocks improves the time efficiency of nondestructive flaw detection equipment calibration.

Description

Technical Field

[0001] This utility model belongs to the field of flaw detection technology, specifically relating to a sample rod of an eddy current ultrasonic combined flaw detection device. Background Technology

[0002] Ultrasonic testing and eddy current testing technologies are widely used in nondestructive testing of metals. In recent years, with the continuous improvement of my country's quality requirements for metal pipes and bars, the combined eddy current and ultrasonic flaw detection technology has become crucial.

[0003] Currently, both eddy current testing and ultrasonic testing in China fall under the category of non-destructive testing. However, based on their testing principles, one relies on physical mechanical waves to test the interior and near-surface of metals, while the other utilizes electromagnetic induction to perform non-destructive testing on the metal surface. Therefore, employing a combined eddy current and ultrasonic testing technique requires calibrating both types of non-destructive testing instruments separately using different types of specimens, which is both time-consuming and resource-intensive. Utility Model Content

[0004] Purpose of the utility model: In order to improve the efficiency of testing and calibration, this utility model provides a sample bar for an eddy current and ultrasonic combined flaw detection device. It is a calibration test piece that can calibrate the eddy current and ultrasonic combined flaw detection device in one go. Using this flaw detection sample bar saves time, reduces the tediousness of equipment calibration, and improves efficiency.

[0005] Technical solution: A sample rod for an eddy current ultrasonic combined flaw detection device, wherein the sample rod for the eddy current ultrasonic combined flaw detection device is a metal rod, and the sample rod for the eddy current ultrasonic combined flaw detection device is provided with 3 artificial grooves and 6 flat bottom holes.

[0006] The diameter of the sample rod of the eddy current ultrasonic combined flaw detection equipment is 2-100mm, the length is 3m, the surface roughness is 3.2um, and the straightness is required to be ≤1mm per meter of curvature.

[0007] The length direction of the three artificial grooves is parallel to the central axis of the eddy current ultrasonic combined flaw detector sample rod. The three artificial grooves are located at the head, middle and tail of the metal rod, respectively, and are used to calibrate near-surface defects detected by ultrasonic flaw detection.

[0008] Of the six flat-bottomed holes, three are used for calibration of internal defects in ultrasonic testing, namely d2 and d3. The depth of d2 is half the diameter of the metal rod, and the depth of d3 is one-quarter the diameter of the metal rod. The three d1 flat-bottomed holes are used for calibration of surface defects in eddy current testing. The distance between the three holes is 500 mm, and they are distributed at 120° along the circumference.

[0009] Three d1 flat-bottom holes are evenly distributed circumferentially on the circumference of the middle part of the eddy current ultrasonic flaw detector sample rod, two d2 flat-bottom holes are distributed at the head and tail of the eddy current ultrasonic flaw detector sample rod, and one d3 flat-bottom hole is located between the d1 flat-bottom holes and the d2 flat-bottom holes.

[0010] As an optimization: the length of the artificial groove is 5mm-40mm, the depth of the artificial groove is 0.05mm-3mm, and the width of the artificial groove is 0.15-0.5mm.

[0011] As an optimization: when the diameter of the metal rod is 2mm-100mm, the diameter of d1 is 0.6mm-3.0mm, the depth is 1.0mm-3.0mm, and the allowable deviation is ±0.05mm.

[0012] As an optimization: when the workpiece diameter and evaluation grade are different, the diameter of the d2 flat-bottom hole is 0.8mm-3.2mm and the depth is 1 / 2 of the workpiece diameter; the diameter of the d3 flat-bottom hole is 0.8mm-3.2mm and the depth is 1 / 4 of the workpiece diameter.

[0013] Beneficial effects: The eddy current and ultrasonic combined flaw detector sample bar of this utility model solves the problem of the sample bar being universally compatible with both eddy current and ultrasonic flaw detection systems during the calibration of the eddy current and ultrasonic combined flaw detector. At the same time, it combines the artificial groove and the flat bottom hole on a single test block bar, which can detect internal defects and achieve perfect integration, shortening the equipment calibration time. The combination of the two types of test blocks improves the time efficiency of non-destructive testing equipment calibration. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0015] Figure 2 This is the utility model Figure 1 A schematic diagram of the AA cross-sectional structure in the diagram;

[0016] Figure 3 This is a side view structural schematic diagram of the present invention; wherein: 1-sample rod of eddy current ultrasonic combined flaw detection equipment, 2-artificial groove, 3-d1 flat bottom hole, 4-d2 flat bottom hole, 5-d3 flat bottom hole. Detailed Implementation

[0017] Example

[0018] like Figure 1-3 The diagram shows a sample rod of an eddy current ultrasonic combined flaw detection device. The sample rod 1 of the eddy current ultrasonic combined flaw detection device is a metal rod. The sample rod 1 of the eddy current ultrasonic combined flaw detection device is provided with 3 artificial grooves 2 and 6 flat bottom holes.

[0019] The diameter of the sample rod 1 of the eddy current ultrasonic combined flaw detection equipment is 2-100mm, the length is 3m, the surface roughness is 3.2um, and the straightness is required to be ≤1mm per meter of curvature.

[0020] The length direction of the three artificial grooves 2 is parallel to the central axis of the sample rod of the eddy current ultrasonic combined flaw detector. The three artificial grooves 2 are located at the head, middle and tail of the metal rod, respectively, and are used to calibrate near-surface defects detected by ultrasonic flaw detection.

[0021] Of the six flat-bottomed holes, three are used for calibration of internal defects in ultrasonic testing, namely d2 flat-bottomed hole 4 and d3 flat-bottomed hole 5. The depth of d2 flat-bottomed hole 4 is 1 / 2 the diameter of the metal rod, and the depth of d3 flat-bottomed hole 5 is 1 / 4 the diameter of the metal rod. The three d1 flat-bottomed holes 3 are used for calibration of surface defects in eddy current testing. The distance between the three holes is 500 mm, and they are distributed at 120° along the circumference.

[0022] Three d1 flat-bottom holes 3 are evenly distributed circumferentially on the circumferential position of the middle part of the eddy current ultrasonic flaw detector sample rod, two d2 flat-bottom holes 4 are distributed at the head and tail of the eddy current ultrasonic flaw detector sample rod, and one d3 flat-bottom hole 5 is located between the d1 flat-bottom holes 3 and the d2 flat-bottom holes 4.

[0023] In this embodiment, the length of the artificial groove is 5mm-40mm, the depth is 0.05mm-3mm, and the width is 0.15-0.5mm. When the diameter of the metal rod is 2mm-100mm, the diameter of the d1 flat-bottom hole 3 is 0.6mm-3.0mm, the depth is 1.0mm-3.0mm, and the allowable deviation is ±0.05mm. When the workpiece diameter and evaluation grade are different, the diameter of the d2 flat-bottom hole 4 is 0.8mm-3.2mm, and the depth is 1 / 2 of the workpiece diameter. The diameter of the d3 flat-bottom hole 5 is 0.8mm-3.2mm, and the depth is 1 / 4 of the workpiece diameter.

[0024] This invention's eddy current and ultrasonic combined flaw detector sample bar solves the problem of using a single sample bar for both eddy current and ultrasonic flaw detection systems during calibration. It also combines an artificial groove and a flat-bottomed hole onto a single sample bar, achieving a perfect fit for detecting internal defects and shortening the equipment calibration time. The combination of the two types of sample bars improves the time efficiency of non-destructive testing equipment calibration.

[0025] The foregoing description clearly and completely illustrates the technical solutions in the embodiments of this utility model, enabling those skilled in the art to better understand the advantages and features of this utility model, thereby providing a clearer definition of the scope of protection of this utility model. The embodiments described in this utility model are merely some embodiments of this utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

Claims

1. A sample rod for an eddy current ultrasonic combined flaw detection device, characterized in that: The sample rod (1) of the eddy current ultrasonic combined flaw detection equipment is a metal rod, and the sample rod (1) of the eddy current ultrasonic combined flaw detection equipment is provided with 3 artificial grooves (2) and 6 flat bottom holes; The diameter of the sample rod (1) of the eddy current ultrasonic combined flaw detection equipment is 2-100mm, the length is 3m, the surface roughness is 3.2um, and the straightness is required to be ≤1mm per meter of curvature. The length direction of the three artificial grooves (2) is parallel to the central axis of the sample rod of the eddy current ultrasonic combined flaw detector. The three artificial grooves (2) are located at the head, middle and tail of the metal rod, respectively, and are used to calibrate near-surface defects of ultrasonic flaw detection. Of the six flat-bottomed holes, three are used for calibration of internal defects in ultrasonic testing, namely d2 flat-bottomed hole (4) and d3 flat-bottomed hole (5), where d2 flat-bottomed hole (4) is half the diameter of the metal rod and d3 flat-bottomed hole (5) is 1 / 4 the diameter of the metal rod; three d1 flat-bottomed holes (3) are used for calibration of surface defects in eddy current testing, with a distance of 500 mm between the three holes and a 120° distribution along the circumference. Three d1 flat-bottom holes (3) are evenly distributed around the circumference of the middle part of the eddy current ultrasonic combined flaw detector sample rod, two d2 flat-bottom holes (4) are distributed at the head and tail of the eddy current ultrasonic combined flaw detector sample rod, and one d3 flat-bottom hole (5) is located between the d1 flat-bottom holes (3) and the d2 flat-bottom holes (4).

2. The sample rod of the eddy current ultrasonic combined flaw detection equipment according to claim 1, characterized in that: The length of the artificial groove is 5mm-40mm, the depth of the artificial groove is 0.05mm-3mm, and the width of the artificial groove is 0.15-0.5mm.

3. The sample rod of the eddy current ultrasonic combined flaw detection equipment according to claim 1, characterized in that: When the diameter of the metal rod is 2mm-100mm, the diameter of the flat bottom hole (3) is 0.6mm-3.0mm, the depth is 1.0mm-3.0mm, and the allowable deviation is +-0.05mm.

4. The sample rod of the eddy current ultrasonic combined flaw detection equipment according to claim 3, characterized in that: When the workpiece diameter and evaluation grade are different, the diameter of the d2 flat bottom hole (4) is 0.8mm-3.2mm and the depth is 1 / 2 of the workpiece diameter; the diameter of the d3 flat bottom hole (5) is 0.8mm-3.2mm and the depth is 1 / 4 of the workpiece diameter.

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