CN116609432A - Ultrasonic flaw detection tool and method for detecting defects of pipe and rod materials - Google Patents
Ultrasonic flaw detection tool and method for detecting defects of pipe and rod materials Download PDFInfo
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- CN116609432A CN116609432A CN202310397979.XA CN202310397979A CN116609432A CN 116609432 A CN116609432 A CN 116609432A CN 202310397979 A CN202310397979 A CN 202310397979A CN 116609432 A CN116609432 A CN 116609432A
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- 238000001514 detection method Methods 0.000 title claims abstract description 199
- 230000007547 defect Effects 0.000 title claims description 33
- 239000000463 material Substances 0.000 title claims description 16
- 238000000034 method Methods 0.000 title claims description 9
- 239000000523 sample Substances 0.000 claims abstract description 140
- 230000002457 bidirectional effect Effects 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 20
- 239000004677 Nylon Substances 0.000 claims description 4
- 229920001778 nylon Polymers 0.000 claims description 4
- 239000000956 alloy Substances 0.000 claims description 3
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- 238000007689 inspection Methods 0.000 claims description 3
- 229910001234 light alloy Inorganic materials 0.000 claims description 3
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- 238000007654 immersion Methods 0.000 description 3
- 238000011895 specific detection Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
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- 238000009776 industrial production Methods 0.000 description 1
- 238000009659 non-destructive testing Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/04—Analysing solids
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/24—Probes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The ultrasonic flaw detection tool comprises a bracket component and an ultrasonic detection module arranged on the bracket component, wherein the ultrasonic detection module consists of a plurality of ultrasonic detection probes, the ultrasonic detection module is arranged at the upper part of the bracket component, and the clamping position of a workpiece to be detected is arranged below the bracket component; the bracket component is provided with a component for adjusting the horizontal distance and the eccentricity between the workpiece to be tested and the probe of the ultrasonic detection module. The invention can realize one-time bidirectional scanning of the pipe and/or bar by utilizing reversing secondary adjustment, avoids detection blind areas, has high detection efficiency, and is particularly suitable for nondestructive detection of small-specification, short-scale, small-batch, high-value and in-service pipe and/or bar.
Description
Technical Field
The invention belongs to the field of flaw detection, and relates to an ultrasonic flaw detection tool and a detection method, in particular to an ultrasonic flaw detection tool and a detection method for detecting defects of pipe and rod materials.
Background
The pipe bar material is a pipe material or a bar material, and is used as a base material in important fields of aerospace, nuclear industry, chemical industry and the like, and has wide application range and high technical requirements. For important industrial fields, 100% nondestructive testing is required for the pipe and the bar before use, so that the pipe and the bar are ensured to be safely used.
In the current industrial production, the pipe and the bar are usually subjected to flaw detection by adopting automatic flaw detection equipment according to a water immersion focusing ultrasonic method, and the detection efficiency is high, but the defect is that dead zones (cut off before use) with certain lengths are reserved at the two ends of the pipe and the bar during detection; and ultrasonic detection cannot be performed on the in-service pipe rod; meanwhile, automatic detection equipment is expensive, detection cost is high, and automatic detection cannot be performed on short-length (usually less than 1500 mm) pipe bars. In addition, the existing manual ultrasonic flaw detection tool for the pipe and the rod has detection dead zones in the detection method, and the two-way scanning can not be realized at the same time by adopting double probes, so that the scanning time is long and the detection efficiency is low; or only a single angle incident wave can be used for detecting certain defects, and the types of workpieces to be detected are relatively limited.
Therefore, under the above limitation conditions, when the detection of high-value rare materials, in-service pipes or bars and small-batch small-specification short-length pipe bars is considered, the non-blind area ultrasonic detection tool and the detection method which are light in design, simple to operate, practical and efficient are necessary.
Under the situation, the inventor provides a manual non-blind area ultrasonic flaw detection tool for detecting defects of pipes and/or bars and a detection method thereof, so as to overcome the defects of the prior art.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide an ultrasonic flaw detection tool and a detection method for detecting the defects of the pipe and the rod, wherein the ultrasonic flaw detection tool is unique in structure, light in design, simple to operate, practical and efficient.
The aim of the invention is realized by the following technical scheme:
the ultrasonic flaw detection tool for detecting the defects of the pipe and the bar comprises a bracket component and an ultrasonic detection module arranged on the bracket component, wherein the ultrasonic detection module consists of a plurality of ultrasonic detection probes, the ultrasonic detection module is arranged at the upper part of the bracket component, and the clamping position of a workpiece to be detected is arranged below the bracket component; the support assembly is provided with a component for adjusting the horizontal distance and the eccentricity between the workpiece to be detected and the probe of the ultrasonic detection module.
Further, the ultrasonic detection module is composed of a first ultrasonic detection probe and a second ultrasonic detection probe, the support assembly comprises a main support, and a first support frame, a second support frame and a third support frame are installed at the bottom of the main support; the main body support is used for adjusting the horizontal distance and the eccentric distance between the first ultrasonic detection probe and the second ultrasonic detection probe and the workpiece to be detected under the first support frame to the third support frame, so that the detection effect is ensured.
Further, the main body bracket includes a mounting plate, a first probe holder, and a second probe holder; the mounting plate is of an integrated symmetrical structure, the mounting plate is provided with two sliding grooves, and the first probe frame and the second probe frame are respectively arranged on the two sliding grooves and can slide along the sliding grooves; the first ultrasonic detection probe and the second ultrasonic detection probe are respectively fixed on the first probe frame and the second probe frame.
Further, the first support frame, the second support frame and the third support frame are all of V-shaped structures and are used for positioning a workpiece to be detected during detection; the first support frame, the second support frame and the third support frame are fixed on the mounting plate through detachable screws.
Further, the first support frame, the second support frame and the third support frame are all nylon support frames with V-shaped structures; the surface of the first support frame, the second support frame and the third support frame, which is contacted with the workpiece to be tested, is provided with knurling for preventing scratches on the surface of the workpiece to be tested.
Furthermore, the mounting plate, the first probe frame and the second probe frame in the main body support are made of light alloy materials which are convenient for the operation of detection personnel and have moderate strength.
Further, through holes for installing ultrasonic detection probes with different specifications and sizes are formed in the middle of the first probe frame and the middle of the second probe frame, and the first ultrasonic detection probe, the second ultrasonic detection probe and the main body support are fastened through screws in a matched mode.
The invention also provides a detection method of the ultrasonic flaw detection tool for detecting the defects of the pipe and the rod based on the above steps: according to the method, a symmetrical structure of a bracket assembly and a sliding block mode are utilized to conduct reversing secondary adjustment, horizontal eccentric distance and water distance between an ultrasonic detection probe module and a workpiece to be detected are adjusted at will, an ultrasonic flaw detection tool is pushed to move back and forth on the surface of the workpiece to be detected, and for a pipe, bidirectional scanning is conducted on transverse waves refracted on a pipe wall by utilizing bidirectional longitudinal waves generated by the ultrasonic flaw detection tool to achieve blind area-free detection; for the bar, carrying out one-time scanning on the transverse hole defects by using the same detection method as that of the pipe, and simultaneously carrying out blind zone-free detection on the flat bottom hole defects by using vertical incidence longitudinal waves. The detection method specifically comprises the following steps:
step one, mounting a first ultrasonic detection probe and a second ultrasonic detection probe on a first probe frame and a second probe frame of a mounting plate;
step two, placing a standard tube/rod under a first support frame, a second support frame and a third support frame, respectively fixing a first probe frame and a second probe frame on different sides of two sliding grooves of a mounting plate by using screws, adjusting parameters of water distance and horizontal eccentricity between the first ultrasonic detection probe and the second ultrasonic detection probe and the standard tube/rod, and detecting defects by utilizing longitudinal waves to refract transverse waves on the wall of the tube/rod;
placing an ultrasonic flaw detection tool on a pipe/bar to be detected, suspending a first support frame at one end of the pipe, aligning a second support frame with the end of the pipe, moving the ultrasonic flaw detection tool to scan along the axial direction of the pipe, and rotating the pipe according to a certain stepping until a third support frame is suspended at the other end of the pipe/bar, and aligning the second support frame with the other end of the pipe/bar;
when the existence of the blind zone of the pipe or the rod end is not allowed, performing the step four and the step five;
step four, exchanging the positions of the first ultrasonic detection probe and the second ultrasonic detection probe, repeating the step two, and adjusting the technological parameters such as water distance, horizontal eccentricity and the like between the first ultrasonic detection probe and the second ultrasonic detection probe and the standard pipe/rod;
step five, repeating the step three, scanning the two ends of the tube/bar to be detected, wherein the scanning range is spaced from the distance between the two support frames at the two ends of the tube/bar, and the scanning in the step three and the scanning in the step five are required to ensure the full coverage of the scanning range of the tube/bar, so that the tube detection can be completed;
step six, for ultrasonic inspection of the bar, the axial transverse holes and the radial flat bottom holes are generally required to be detected. And (5) detecting the axial transverse hole, and repeating the first step to the fifth step. And detecting the radial flat bottom hole, adjusting the position of the first ultrasonic detection probe or the second ultrasonic detection probe, placing the first ultrasonic detection probe or the second ultrasonic detection probe right above the standard rod, and adjusting the water distance parameter with the workpiece. And the bar to be detected is scanned once by moving the ultrasonic flaw detection tool, so that the bar scanning range is ensured to be fully covered, and the bar detection can be completed.
Compared with the prior art, the invention has the following beneficial effects:
1) The tool disclosed by the invention is light in design, the horizontal eccentricity and the water distance between the ultrasonic detection probe and the workpiece to be detected can be adjusted at will by utilizing a symmetrical structure and a sliding block mode, the tool is pushed to move back and forth on the surface of the workpiece to be detected, the detection of small-specification short-length pipes or bars can be realized by one-time bidirectional scanning, and the detection efficiency is greatly improved.
2) According to the invention, the reversing secondary adjustment is utilized, so that the non-blind area ultrasonic detection of the pipe and/or bar can be realized, and the material utilization rate of the pipe and bar to be detected is improved; the in-service pipe and/or bar can be directly detected without being taken down from the structural member; for rare and noble materials with high value, the material loss caused by the reserved blind area is avoided, and the material utilization rate of the pipe and bar to be detected can be improved.
3. The supporting frames are of V-shaped structures, so that workpieces to be detected can be positioned conveniently; in addition, the supporting frames are made of nylon materials, knurling is carried out on the contact surface of the supporting frames and the workpiece to be detected, and scratch on the surface of the workpiece to be detected in the detection process can be reduced.
4. When the ultrasonic detection probes with different specifications are selected, the adjustable fastening can be carried out through the detachable screws; meanwhile, the probe frame can be positioned at a proper position of the sliding groove through the detachable screw so as to ensure proper ultrasonic detection parameter selection.
In summary, the ultrasonic flaw detection tool and the ultrasonic flaw detection method for detecting the defects of the pipe and the rod can realize one-time bidirectional scanning of the pipe and/or the rod by utilizing reversing secondary adjustment, avoid detection dead zones, have high detection efficiency, and are particularly suitable for nondestructive detection of the pipe and/or the rod with small specification, short length, small batch, high value and in-service.
Drawings
FIG. 1 is a schematic diagram of the whole structure of the non-blind area ultrasonic flaw detection tool;
FIG. 2 is a top view and a front view of a main body bracket of the non-blind area ultrasonic flaw detection tool of the invention;
FIG. 3 is a schematic diagram of a non-blind area ultrasonic flaw detection tool detection method for detecting defects of pipes and bars (transverse holes);
fig. 4 is a schematic diagram of the principle of the non-blind area ultrasonic flaw detection tool for detecting defects of bars (flat bottom holes) according to the invention.
Wherein: 1. 2 is an ultrasonic detection probe; 3 is a main body bracket; 4. 5 and 6 are supporting frames; 31 is a mounting plate; 32. and 33 is a probe holder.
1 is a first ultrasonic detection probe; 2 is a second ultrasonic detection probe; 3 is a main body bracket; 4 is a first supporting frame; 5 is a second supporting frame; 6 is a third supporting frame; 31 is a mounting plate; 32 is a first probe holder; and 33 is a second probe holder.
Detailed Description
The invention is described in further detail below with reference to the attached drawing figures:
referring to fig. 1, the ultrasonic flaw detection tool for detecting pipe and rod defects comprises a bracket component and an ultrasonic detection module arranged on the bracket component, wherein the ultrasonic detection module consists of a plurality of ultrasonic detection probes, the ultrasonic detection module is arranged at the upper part of the bracket component, and the clamping position of a workpiece to be detected is arranged below the bracket component; the bracket component is provided with a component for adjusting the horizontal distance and the eccentricity between the workpiece to be tested and the probe of the ultrasonic detection module. The ultrasonic detection module consists of a first ultrasonic detection probe 1 and a second ultrasonic detection probe 2, the bracket assembly comprises a main bracket 3, and a first supporting frame 4, a second supporting frame 5 and a third supporting frame 6 are arranged at the bottom of the main bracket 3; the main body bracket 3 is used for adjusting the horizontal distance and the eccentric distance between the first ultrasonic detection probe 1 and the second ultrasonic detection probe 2 and the workpiece to be detected under the first supporting frame 4, the second supporting frame 5 and the third supporting frame 6, so as to ensure the detection effect.
As shown in fig. 2: the main body holder 3 of the present invention includes a mounting plate 31, a first probe holder 32 and a second probe holder 33; the mounting plate 31 is of an integral symmetrical structure, the mounting plate 31 is provided with two sliding grooves, and the first probe frame 32 and the second probe frame 33 are respectively arranged on the two sliding grooves and can slide along the sliding grooves; the first ultrasonic detection probe 1 and the second ultrasonic detection probe 2 are respectively fixed to the first probe frame 32 and the second probe frame 33. The first support frame 4, the second support frame 5 and the third support frame 6 are all of V-shaped structures and are used for realizing positioning of a workpiece to be detected during detection; the first support frame 4, the second support frame 5 and the third support frame 6 are fixed on the mounting plate 31 by detachable screws. The first support frame 4, the second support frame 5 and the third support frame 6 are all nylon support frames with V-shaped structures; the first supporting frame 4, the second supporting frame 5 and the third supporting frame 6 are provided with knurls for preventing scratches on the surface of the workpiece to be tested on the surface contacting the workpiece to be tested. Through holes for installing ultrasonic detection probes with different specifications and sizes are formed in the middle of the first probe frame 32 and the middle of the second probe frame 33, and the first ultrasonic detection probe 1, the second ultrasonic detection probe 2 and the main body support 3 are fastened through screws.
In the preferred embodiment of the present invention, the mounting plate 31 and the first and second probe holders 32, 33 of the main body bracket 3 are made of light alloy materials with moderate strength, which are convenient for the operation of the inspector.
See fig. 3 and 4: by adopting the design principle of the tool, for the pipe, bidirectional detection is carried out on transverse waves refracted on the pipe wall by utilizing bidirectional longitudinal waves generated by the tool; for the bar, the detection of the transverse hole defect is carried out by using the same detection method as that of the pipe, and the detection of the flat bottom hole defect is carried out by using vertical incidence longitudinal waves. The specific detection method comprises the following steps:
step one, mounting a first ultrasonic detection probe 1 and a second ultrasonic detection probe 2 on a first probe frame 32 and a second probe frame 33 of a probe mounting plate 31;
step two, placing the standard tube/rod under the first support frame 4, the second support frame 5 and the third support frame 6, fixing the first probe frame 32 and the second probe frame 33 on different sides of two sliding grooves of the mounting plate 31 by using screws respectively, adjusting the technological parameters such as water distance, horizontal eccentricity and the like between the first ultrasonic detection probe 1 and the second ultrasonic detection probe 2 and the standard tube/rod, and detecting the defects by utilizing longitudinal waves to refract transverse waves on the walls of the tube/rod.
Placing the tool on a pipe/bar to be detected, suspending the first support frame 4 at one end of the pipe, aligning the second support frame 5 with the end of the pipe, moving the tool to scan along the axial direction of the pipe, and rotating the pipe according to a certain step until the third support frame 6 is suspended at the other end of the pipe/bar, and aligning the second support frame 5 with the other end of the pipe/bar;
when the existence of the blind zone of the pipe or the rod end is not allowed, performing the step four and the step five;
step four, the positions of the two probes (namely the first ultrasonic detection probe 1 and the second ultrasonic detection probe 2) are exchanged, the step two is repeated, and the technological parameters such as the water distance, the horizontal eccentricity and the like between the two probes and the standard tube/rod are adjusted;
and step five, repeating the step three, and scanning the two ends of the tube/bar to be detected, wherein the scanning range is about two support frame distances from the two ends of the tube/bar. And thirdly, scanning and fifth, wherein the whole coverage of the scanning range of the tube/bar is ensured, and then the tube detection can be completed.
Step six, for ultrasonic inspection of the bar, the axial transverse holes and the radial flat bottom holes are generally required to be detected. And (5) detecting the axial transverse hole, and repeating the first step to the fifth step. And detecting the radial flat bottom hole, adjusting the position of the first ultrasonic detection probe or the second ultrasonic detection probe, placing the first ultrasonic detection probe or the second ultrasonic detection probe right above the standard rod, and adjusting the water distance parameter with the workpiece. And the bar to be detected is scanned once by moving the ultrasonic flaw detection tool, so that the bar scanning range is ensured to be fully covered, and the bar detection can be completed.
In order to further verify the manual non-blind area ultrasonic flaw detection tool and the detection method for detecting the defects of the pipes and/or the bars, the inventor performs the following specific embodiments:
example 1
Taking a pipe with an outer diameter phi of 20mm and an inner diameter phi of 10mm as an example, the specific detection process is as follows:
an ultrasonic detection water immersion focusing probe is arranged on a probe frame of a probe mounting plate; and placing the standard tube under the supporting frame, fixing the two probe frames on different sides of the two sliding grooves of the mounting plate by using screws respectively, and starting to detect after finishing the parameter adjustment of the water distance and the horizontal eccentricity between the probe and the standard tube. During detection, the tool is placed on a pipe to be detected, the support frame on one side is suspended at one end of the pipe, the middle support frame is aligned with the end of the pipe, the tool is moved to scan along the axial direction of the pipe, meanwhile, the pipe is rotated according to a certain step until the support frame on the other side is suspended at the other end of the pipe, the middle support frame is aligned with the other end of the pipe, and scanning is stopped; and then the positions of the two probes are exchanged, and after the parameters of the water distance and the horizontal eccentricity between the probe and the standard pipe are adjusted, the two ends of the pipe to be detected are scanned, and the distance between the scanning range and the two ends of the pipe is about the distance between the two support frames. And the two scanning needs to ensure the full coverage of the pipe scanning range, namely, the pipe detection is finally completed.
Example 2
Taking a bar with the outer diameter phi of 50mm as an example, the specific detection process is as follows:
near-surface defect detection of the bar: an ultrasonic detection water immersion focusing probe is arranged on a probe frame of a probe mounting plate; and placing the standard rod under the supporting frame, fixing the two probe frames on different sides of the two sliding grooves of the mounting plate by using screws respectively, and starting to detect after finishing the parameter adjustment of the water distance and the horizontal eccentricity between the probe and the standard rod. During detection, the tool is placed on a bar to be detected, the support frame on one side is suspended at one end of the bar, the middle support frame is aligned with the end part of the bar, the tool is moved to scan along the axial direction of the bar, meanwhile, the bar is rotated according to a certain step until the support frame on the other side is suspended at the other end of the bar, the middle support frame is aligned with the other end part of the bar, and scanning is stopped; and then the positions of the two probes are exchanged, after the parameters of the water distance and the horizontal eccentricity between the probes and the standard rod are adjusted, the two ends of the bar to be detected are scanned, and the distance between the scanning range and the two ends of the bar is about the distance between the two support frames. The two scanning needs to ensure the full coverage of the bar scanning range.
Detecting core defects of the bar: and placing a probe in the middle of the sliding groove, and adjusting the water distance between the standard rod and the probe. Then place the frock on waiting to examine the rod, detect the flat bottom hole of rod and hinder, hang one side support frame in rod one end, middle support frame aligns with the rod tip, remove the frock and sweep along the rod axial, rotate the rod according to certain step by step simultaneously, until the opposite side support frame is unsettled in the rod other end, middle support frame aligns with the rod other tip, accomplish the rod and detect promptly finally.
The ultrasonic flaw detection tool is simple in structure, light in design, convenient to operate, easy to master, efficient, stable and reliable in detection, and particularly suitable for nondestructive detection of small-size, short-length, small-batch, high-value and in-service pipes and/or bars, and can realize non-blind area ultrasonic detection of the pipes and/or the bars by utilizing reversing secondary adjustment.
The foregoing is only a specific embodiment of the invention to enable those skilled in the art to understand or practice the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention.
It will be understood that the invention is not limited to what has been described above and that various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.
Claims (9)
1. The ultrasonic flaw detection tool for detecting the defects of the pipe and the rod is characterized by comprising a bracket component and an ultrasonic detection module arranged on the bracket component, wherein the ultrasonic detection module consists of a plurality of ultrasonic detection probes, the ultrasonic detection module is arranged at the upper part of the bracket component, and the clamping position of a workpiece to be detected is arranged below the bracket component; the support assembly is provided with a component for adjusting the horizontal distance and the eccentricity between the workpiece to be detected and the probe of the ultrasonic detection module.
2. The ultrasonic flaw detection tool for detecting pipe and rod defects according to claim 1, wherein the ultrasonic detection module consists of a first ultrasonic detection probe (1) and a second ultrasonic detection probe (2), the support assembly comprises a main support (3), and a first support frame (4), a second support frame (5) and a third support frame (6) are arranged at the bottom of the main support (3); the main body support (3) is used for adjusting the horizontal distance and the eccentric distance between the first ultrasonic detection probes (1) and the second ultrasonic detection probes (2) and the workpiece to be detected under the first support frames (4), (5) and the third support frames (6), so that the detection effect is ensured.
3. The ultrasonic flaw detection tool for pipe and rod flaw detection according to claim 2, wherein the main body bracket (3) comprises a mounting plate (31) and first and second probe holders (32, 33); the mounting plate (31) is of an integral symmetrical structure, the mounting plate (31) is provided with two sliding grooves, and the first probe frame (32) and the second probe frame (33) are respectively arranged on the two sliding grooves and can slide along the sliding grooves; the first ultrasonic detection probe (1) and the second ultrasonic detection probe (2) are respectively fixed on the first probe frame (32) and the second probe frame (33).
4. The ultrasonic flaw detection tool for detecting pipe and rod defects according to claim 3, wherein the first support frame (4), the second support frame (5) and the third support frame (6) are all of V-shaped structures for positioning a workpiece to be detected during detection; the first support frame (4), the second support frame (5) and the third support frame (6) are fixed on the mounting plate (31) through detachable screws.
5. The ultrasonic flaw detection tool for detecting pipe and rod defects according to claim 4, wherein the first support frame (4), the second support frame (5) and the third support frame (6) are all nylon support frames with V-shaped structures; the surface of the first supporting frame (4), the second supporting frame (5) and the third supporting frame (6) which are contacted with the workpiece to be detected is provided with knurling for preventing scratches on the surface of the workpiece to be detected.
6. The ultrasonic flaw detection tool for detecting pipe and rod defects according to claim 2, wherein the mounting plate (31) and the first probe frame (32) and the second probe frame (33) in the main body support (3) are made of light alloy materials which are convenient for the operation of detection personnel and have moderate strength.
7. The ultrasonic flaw detection tool for detecting pipe and rod material flaws according to claim 2, wherein through holes for installing ultrasonic detection probes of different specifications and sizes are formed in the middle of the first probe frame (32) and the middle of the second probe frame (33), and the first ultrasonic detection probe (1), the second ultrasonic detection probe (2) and the main body support (3) are fastened through screws in a matched mode.
8. The detection method based on the ultrasonic flaw detection tool for detecting the defects of the pipe and the rod materials is characterized in that the symmetrical structure and the sliding block mode of the bracket component are utilized to conduct reversing secondary adjustment, the horizontal eccentric distance and the water distance between the ultrasonic detection probe module and the workpiece to be detected are randomly adjusted, the ultrasonic flaw detection tool is pushed to move back and forth on the surface of the workpiece to be detected, and for the pipe materials, bidirectional scanning is conducted on transverse waves refracted on the pipe wall by utilizing bidirectional longitudinal waves generated by the ultrasonic flaw detection tool to realize non-blind area detection; for the bar, carrying out one-time scanning on the transverse hole defects by using the same detection method as that of the pipe, and simultaneously carrying out blind zone-free detection on the flat bottom hole defects by using vertical incidence longitudinal waves.
9. The method of detecting according to claim 8, comprising the steps of:
step one, a first ultrasonic detection probe (1) and a second ultrasonic detection probe (2) are arranged on a first probe frame (32) and a second probe frame (33) of a mounting plate (31);
step two, placing a standard tube/rod under a first support frame (4), a second support frame (5) and a third support frame (6), respectively fixing a first probe frame (32) and a second probe frame (33) on different sides of two sliding grooves of a mounting plate (31) by using screws, adjusting parameters of water distance and horizontal eccentricity between a first ultrasonic detection probe (1) and a second ultrasonic detection probe (2) and the standard tube/rod, and detecting defects by utilizing longitudinal waves to refract transverse waves on the wall of the tube/rod;
placing an ultrasonic flaw detection tool on a pipe/bar to be detected, suspending a first support frame (4) at one end of the pipe, aligning a second support frame (5) with the end of the pipe, moving the ultrasonic flaw detection tool to scan along the axial direction of the pipe, and rotating the pipe according to a certain step until a third support frame (6) is suspended at the other end of the pipe/bar, and aligning the second support frame (5) with the other end of the pipe/bar;
when the existence of the blind zone of the pipe or the rod end is not allowed, performing the step four and the step five;
step four, exchanging the positions of the first ultrasonic detection probe (1) and the second ultrasonic detection probe (2), repeating the step two, and adjusting the technological parameters such as the water distance, the horizontal eccentricity and the like between the first ultrasonic detection probe (1) and the second ultrasonic detection probe (2) and the standard pipe/rod;
step five, repeating the step three, scanning the two ends of the tube/bar to be detected, wherein the scanning range is spaced from the distance between the two support frames at the two ends of the tube/bar, and the scanning in the step three and the scanning in the step five are required to ensure the full coverage of the scanning range of the tube/bar, so that the tube detection can be completed;
step six, for ultrasonic inspection of the bar, detecting the axial transverse holes and the radial flat bottom holes, detecting the axial transverse holes, and repeating the steps one to five; detecting radial flat bottom holes, adjusting the positions of a first ultrasonic detection probe (1) or a second ultrasonic detection probe (2), placing the first ultrasonic detection probe (1) or the second ultrasonic detection probe (2) right above a standard rod, and adjusting the water distance parameters with a workpiece; and the bar to be detected is scanned once by moving the ultrasonic flaw detection tool, so that the bar scanning range is ensured to be fully covered, and the bar detection can be completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310397979.XA CN116609432A (en) | 2023-04-14 | 2023-04-14 | Ultrasonic flaw detection tool and method for detecting defects of pipe and rod materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310397979.XA CN116609432A (en) | 2023-04-14 | 2023-04-14 | Ultrasonic flaw detection tool and method for detecting defects of pipe and rod materials |
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| CN117952960A (en) * | 2024-03-25 | 2024-04-30 | 湖南五美电力线路器材有限公司 | Electric power iron tower part defect detection method based on artificial intelligence |
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