CN112433005A - Automatic scanning device and method for bending weld phased array ultrasonic detection - Google Patents
Automatic scanning device and method for bending weld phased array ultrasonic detection Download PDFInfo
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- G—PHYSICS
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- 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
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- G01N2291/00—Indexing codes associated with group G01N29/00
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Abstract
An automatic scanning device for phased array ultrasonic detection of a bent weld joint comprises a main frame, an adsorption device, a multi-axis movement device, a movement control device, a probe clamping device, an ultrasonic coupling device, a coupling water supply device and a phased array ultrasonic probe. Scanning the surface of the metal flat butt-joint bent weld joint structural member by a phased array ultrasonic probe to obtain an ultrasonic C scanning image of the metal flat butt-joint bent weld joint structural member, and analyzing and judging the imaging. The automatic scanning device for the phased array ultrasonic detection of the bent weld joint detects the internal defects of the metal flat butt-jointed bent weld joint structural member by adopting the phased array ultrasonic detection technology, can more effectively detect the internal defects of the metal flat butt-jointed bent weld joint structural member compared with the conventional ultrasonic detection technology, prevents the structural workpiece from being damaged in the use process, greatly improves the detection stability and the detection efficiency, and has high use flexibility and wider application range.
Description
Technical Field
The invention belongs to the technical field of weld joint detection, and particularly relates to an automatic scanning device and method for phased array ultrasonic detection of a bent weld joint.
Background
In the fields of ships, maritime works, steel structure construction and the like, along with the continuous improvement of manufacturing processes, corresponding welding structure forms continuously emerge, welding processes are continuously updated, and the detection requirements on welding quality are higher and higher.
The inspection of curved welds has been one of the difficult problems to deal with during construction. The traditional method adopts a contact type conventional ultrasonic pulse echo technology, the dependence of the conventional ultrasonic detection technology on detection personnel is high, the precision and reliability of a detection result are low, the repeatability is insufficient, the detection data cannot be stored for a long time, and the requirements of high construction precision and imaging detection and the quality control requirement of data traceability cannot be met.
The phased array ultrasonic detection technology is an advanced nondestructive detection technology, and has the greatest advantages that the flexible probe configuration mode can realize sound field incidence of a plurality of different angles in the same probe, so that the detection efficiency and the cost are greatly improved; the electronic scanning mode is used for replacing mechanical scanning, so that the detection mechanism can be simplified, and the detection efficiency is improved. Therefore, the phased array detection technology is very suitable for detecting complex structures. However, in the process of implementing the ultrasonic detection of the bent weld phased array, how to ensure that the probe always follows the weld and ensure that the sound beam is vertically incident on the weld area is one of the problems encountered at present; in the detection of the bent welding seam, the forms of a linear encoder or an encoding wheel and the like are easy to cause incomplete data acquisition due to inaccurate encoding technology, so that detection omission is caused.
Therefore, it is necessary to combine the automation technology and the detection technology to realize the controllability of the detection process, reduce the dependency on the personnel and improve the reliability of the result, and the method is gradually becoming an important development trend in the future.
Disclosure of Invention
Aiming at the problems, the invention provides an automatic scanning device and method for the phased array ultrasonic detection of the bent weld joint.
The purpose of the invention can be realized by the following technical scheme: an automatic scanning device for phased array ultrasonic detection of a bent weld joint comprises a main frame, an adsorption device, a multi-axis motion device, a motion control device, a probe clamping device, an ultrasonic coupling device, a coupling water supply device and a phased array ultrasonic probe; the vacuum sucking disc type vacuum sucking disc comprises a main frame, wherein an adsorption device and a multi-axis movement device are arranged on the main frame, the adsorption device comprises a sucking disc assembly, the multi-axis movement device comprises an X-axis module, a Y-axis module, a Z-axis module and an R-axis module, the X-axis module, the Y-axis module and the main frame are arranged on the same plane, the X-axis module is arranged on the main frame and arranged along the length direction of the main frame, the Y-axis module is arranged on a sliding block of the X-axis module, the R-axis module is arranged on a sliding block of the Y-axis module and a rotating shaft of the R-axis module is arranged along the Z-; the motion control device is connected with and controls the multi-axis motion device, the probe clamping device is installed on a sliding block of the Z-axis module, the ultrasonic coupling device is clamped on the probe clamping device and connected with the coupling water supply device, and the phased array ultrasonic probe is installed on the ultrasonic coupling device.
Further, the sucking disc subassembly includes sucking disc mounting bracket, sucking disc, handle, the sucking disc mounting bracket is installed on the main frame, more than 2 the sucking disc is installed on the sucking disc mounting bracket and is located the both sides of main frame respectively, the handle is installed on the sucking disc mounting bracket. Furthermore, a control switch which is connected with and controls the sucker is arranged on the handle.
Furthermore, the X-axis module and the Y-axis module adopt motor-driven linear modules, the R-axis module adopts a rotary cylinder to drive a rotary shaft, and the Z-axis module adopts a lifting rod with a buffer spring to drive a sliding block.
Further, probe clamping device includes dead lever, rotation axis, holding frame, adjust knob, elastic compression screw, the dead lever sets up along X axle direction, and on one end was fixed in the slider of Z axle module, be connected with the holding frame through the rotation axis that sets up along Y axle direction on the other end, the holding frame is the U type and one side is fixed centre gripping arm, and the opposite side is the portable centre gripping arm that adjust knob connected, is equipped with elastic compression screw on the fixed centre gripping arm of holding frame and the portable centre gripping arm correspondingly, and ultrasonic coupling device is installed in the centre gripping on the holding frame.
Further, the coupling water supply device comprises a water pump, a water storage tank, an electromagnetic valve, a controller and a control interface.
Furthermore, the ultrasonic flaw detector also comprises a computer and a phased array ultrasonic flaw detector, wherein the computer is provided with phased array ultrasonic detection analysis software and motion control software.
An automatic scanning method for ultrasonic detection of a phased array of a bent weld joint comprises the following steps:
s1, selecting a phased array ultrasonic probe and an adaptive probe wedge according to the thickness of the metal flat butt-joint bent weld joint structural part;
s2, detecting the metal flat butt-jointed bent weld joint structural part by using the selected phased array ultrasonic probe and the automatic scanning device for the phased array ultrasonic detection of the bent weld joint according to any one of claims 1 to 7, and storing a scanned image into a phased array ultrasonic flaw detector;
and S3, judging the internal quality condition of the metal flat butt-joint bent welding seam structural part through phased array ultrasonic detection analysis software on a computer.
Further, in S1, when the thickness of the metal flat butt-bent weld joint structural member is 8mm to 20mm, a phased array ultrasonic inspection probe and a corresponding probe wedge of 16 wafers are selected, and when the thickness of the metal flat butt-bent weld joint structural member is 20mm to 60mm, a phased array ultrasonic inspection probe and a corresponding probe wedge of 32 wafers are selected.
Further, in S3, a reasonable filtering range is set in the phased array ultrasonic testing and analyzing software, the gate of the phased array ultrasonic probe is set at the position of the metal flat butt-joint bent weld, when the scanned image has red, dark red and black displays, a relatively serious internal defect exists at the position, the nature of the defect is judged according to the position of the weld where the red display exists, and when the scanned image displays light green and light yellow, a relatively serious internal defect does not exist at the position.
Compared with the prior art, the invention has the beneficial effects that:
(1) the internal defects of the metal flat butt-joint bent welding seam structural part are detected by adopting a phased array ultrasonic detection technology, and a proper phased array ultrasonic probe and a wedge block are selected according to different welding seam thicknesses, so that the detection of the structural part can be completed quickly and efficiently, the long-term storage of welding seam detection data is ensured, the technical difficulties in the field are solved, compared with the traditional ultrasonic detection method, the internal defects of the metal flat butt-joint bent welding seam structural part can be detected more effectively, and the structural part is prevented from being damaged in the use process;
(2) the method has the advantages that a phased array ultrasonic probe is combined with data imaging analysis, the internal defect condition of the metal flat butt-jointed bent welding seam structural part is reflected visually, compared with the waveform display of the traditional ultrasonic detection method, the imaging display is more accurate through judging the detection result through the waveform, if the local part has serious internal defects, the image presents red, deep red and black at the defect position, if the internal part does not have serious defects, the image is displayed in light green and light yellow integrally, and therefore the problem that whether the serious internal defects exist in the metal welding seam structure or not can be judged visually;
(3) the method has the advantages that the phased array ultrasonic detection technology is combined with the water spray type coupling process mode, the detection of the internal defects of the metal flat butt-joint bent welding seam structural part is smoothly realized, the detection efficiency and the detection stability are greatly improved, and the safety and the reliability of the welding seam structure are fully ensured;
(4) the adsorption device is adopted for adsorption and fixation, the multi-axis movement device is adopted for moving the probe, the probe clamping device is adopted for clamping the probe, the detection stability and the detection efficiency of the whole device are greatly improved, the use flexibility is high, and the application range is wide.
Drawings
Fig. 1 is a front view of the present invention.
Fig. 2 is a top view of the present invention.
Fig. 3 is a plan view of the adsorption apparatus of the present invention.
Fig. 4 is a side view of the adsorption apparatus of the present invention.
Fig. 5 is a plan view of an X-axis module and a Y-axis module of the multi-axis movement apparatus of the present invention.
Fig. 6 is a front view of the Z-axis module, the probe holder, and the ultrasonic coupling device of the multi-axis motion device of the present invention.
Fig. 7 is a side view of the Z-axis module, the probe holder, and the ultrasonic coupling device of the multi-axis motion device of the present invention.
Fig. 8 is a front view of the probe gripping device of the present invention.
Fig. 9 is a top view of the probe gripping device of the present invention.
Fig. 10 is a schematic diagram of the water supply device of the present invention supplying water to the ultrasonic coupling device.
The parts in the figures are numbered as follows:
1 Main frame
2 adsorption device
201 sucker mounting rack
202 suction cup
203 handle
3 multi-axis movement device
301X axis module
302Y-axis module
303Z-axis module
3031 lifting rod
3032 buffer spring
304R axle module
4 probe clamping device
401 fixed bar
402 rotating shaft
403 holding rack
404 adjusting knob
405 elastic compression screw
5 ultrasonic coupling means.
Detailed Description
The following detailed description of the embodiments of the present invention will be given in conjunction with the accompanying drawings to make it clear to those skilled in the art how to practice the present invention. While the invention has been described in connection with preferred embodiments thereof, these embodiments are merely illustrative, and not restrictive, of the scope of the invention.
Referring to fig. 1 and 2, an automatic scanning device for phased array ultrasonic detection of a curved weld joint comprises a main frame 1, an adsorption device 2, a multi-axis movement device 3, a movement control device, a probe clamping device 4, an ultrasonic coupling device 5, a coupling water supply device and a phased array ultrasonic probe.
The main frame 1 is in a beam shape, and the main frame 1 is provided with an adsorption device 2 and a multi-axis movement device 3.
The adsorption device 2 is used for fixing the automatic scanning device on the table of the detected object, the adsorption device 2 comprises a sucker 202 assembly, and more than 2 sucker 202 assemblies are distributed on the main frame 1. Referring to fig. 3 and 4, each sucker 202 assembly comprises a sucker mounting bracket 201, a sucker 202 and a handle 203, the sucker mounting bracket 201 is mounted on the main frame 1, more than 2 suckers 202 are mounted on the sucker mounting bracket 201 and distributed on two sides of the main frame 1, the sucker 202 can adopt a vacuum sucker or an electromagnetic sucker, the handle 203 is mounted on the sucker mounting bracket 201, and a control switch for connecting and controlling the sucker 202 is arranged on the handle 203. During operation, the handle 203 of the 2 sucker 202 assemblies is lifted by two hands, so that the suckers 202 are attached to the surface of a workpiece, and then the control switch is turned on, so that the suckers 202 can suck.
And the multi-axis movement device 3 is used for driving the phased array ultrasonic probe to move along the welding line in the scanning process. Referring to fig. 1, 2 and 5, the multi-axis movement device 3 includes an X-axis module 301, a Y-axis module 302, a Z-axis module 303, an R-axis module 304, the X-axis module 301 and the Y-axis module 302 are arranged on the same plane with the main frame 1, the X-axis module 301 is arranged on the main frame 1 and arranged along the length direction of the main frame 1, the Y-axis module 302 is arranged on a slide block of the X-axis module 301 and arranged at one side of the main frame 1, the X-axis module 301 and the Y-axis module 302 adopt a motor-driven linear module, the R-axis module 304 is mounted on a slide block of the Y-axis module 302, the R-axis module 304 drives a rotating shaft 402 by using a rotating cylinder, the rotating shaft 402 is arranged along the Z-axis direction, the Z-axis module 303 is mounted on the rotating shaft 402 of the R-axis module 304, and referring to fig. 6 and 7, the Z-axis module 303 drives a slider by using a lifting rod 3031 with a buffer spring 3032, and the slider of the Z-axis module 303 is mounted with a probe clamping device 4.
The X-axis module 301 is used for determining the total length of a single path of automatic scanning, recording corresponding scanning position information after the scanning is finished, and enabling the phased array ultrasonic probe to automatically move from a scanning end point position to a scanning start point position according to an instruction when the phased array ultrasonic probe moves to a scanning end point; the Y-axis module 302 is used for determining the distance between the phased array ultrasonic probe for automatic scanning and the welding line and ensuring the coverage of the phased array ultrasonic sound beam on the detection area; the Z-axis module 303 is used for determining the distance between the probe clamping device 4 and the surface of the metal flat butt-joint bent weld joint, and applying a pressure to the probe clamping device 4 through the lifting rod 3031 to ensure that the pressure of the phased array ultrasonic probe and the surface of the weld joint is moderate and stable in fitting degree, and relatively stable coupling performance and ultrasonic penetration capacity are maintained; the R-axis module 304 is used for controlling the phased array ultrasonic probe to scan the welding seam in a parallel moving mode according to the arc condition of the bent welding seam and keeping the same scanning offset.
The motion control device is connected with and controls the multi-axis motion device 3, and the motion control device is used for controlling the multi-axis motion device 3 to realize the motion trail required by the detection process. The motion control device can continuously drive the interpolation motion of the X-axis module 301, the Y-axis module 302 and the Z-axis module 303 according to the input requirement of the motion coordinate, and simultaneously control the rotation of the R-axis module 304, so that the forward or reverse motion can be realized while keeping the probe clamping device 4 at a certain fixed distance from the welding line, and single or multiple forward and reverse motions can be realized.
Referring to fig. 8 and 9, the probe clamping device 4 includes a fixing rod 401, a rotating shaft 402, a clamping frame 403, an adjusting knob 404, and a resilient compression screw 405. The dead lever 401 sets up along the X axle direction, and on one end was fixed in the slider of Z axle module 303, be connected with clamping frame 403 through the rotation axis 402 that sets up along the Y axle direction on the other end, clamping frame 403 is the U type and one side is fixed centre gripping arm, and the opposite side is the portable centre gripping arm that adjustment knob 404 connects, is equipped with elastic compression screw 405 on the fixed centre gripping arm of clamping frame 403 and the portable centre gripping arm correspondingly, and the centre gripping is installed ultrasonic coupling device 5 on the clamping frame 403. The probe clamping device 4 is fixed with the ultrasonic coupling device 5 and the phased array ultrasonic probe, and meanwhile, the ultrasonic coupling device 5 and the phased array ultrasonic probe can still be slightly adjusted on an XZ plane, so that the scanning can still be continued without being hindered when splashed or uneven surfaces are encountered in the actual scanning process. The adjustment knob 404 enlarges the applicability of the probe clamping device 4, and can replace different ultrasonic coupling devices 5 and phased array ultrasonic probes according to the characteristics of different structural members without being limited by the sizes of the phased array ultrasonic probes and the probe wedges.
The ultrasonic coupling device 5 is arranged in the probe clamping device 4, the ultrasonic coupling device 5 is used for meeting the coupling requirement in the detection process, and the phased array ultrasonic probe is arranged on the ultrasonic coupling device 5.
The coupling water supply device is connected with the ultrasonic coupling device 5, the coupling water supply device comprises a water pump, a water storage tank, an electromagnetic valve, a controller and a control interface, the specific principle is shown in figure 10, the electromagnetic valve is operated by an instruction controller to operate the water pump in a corresponding operation mode through an automatic operation mode or a manual operation mode on the control interface, the water pump extracts coupling liquid through a rubber pipe connected with the water storage tank and supplies water continuously to a phased array ultrasonic probe on the ultrasonic coupling device 5, and the coupling stability of the phased array ultrasonic detection metal flat butt bending welding seam is ensured.
The phased array ultrasonic probe is a linear array probe or a surface type array probe.
The ultrasonic flaw detector also comprises a computer with phased array ultrasonic detection and analysis software and motion control software and a phased array ultrasonic flaw detector.
When scanning, the automatic scanning device is firstly placed on the smooth surface of the metal flat butt-joint bent welding line. Then, the multi-axis motion device 3 is adjusted, the scanning length of the X-axis module 301 and the distance between the Y-axis module 302 and the weld are determined according to the thickness of the metal flat butt-joint bent weld and the length of a path to be detected, the rotary cylinder of the R-axis module 304 is adjusted according to the bending degree of the bent weld, the R axis can be attached to the appearance characteristic of the bent weld, and finally the lifting rod 3031 of the Z axis is adjusted to ensure that the phased array ultrasonic probe and the metal flat butt-joint bent weld structural part maintain proper attachment degree. After the stroke track of the phased array ultrasonic probe is preliminarily adjusted, preliminary experimental stroke scanning is carried out, the 3X axis, the Y axis, the Z axis and the R axis of the multi-axis motion device are ensured to cooperatively and effectively operate, and fixed scanning offset and fitting degree can be kept. When in formal scanning detection, the motion control device controls the multi-axis motion device 3 to drive the probe clamping device 4, so that the phased array ultrasonic probe makes parallel motion along the metal flat butt-joint bending welding line, and records the corresponding scanning position. When the phased array ultrasonic probe moves to the scanning end point, the phased array ultrasonic probe moves from the scanning end point position to the scanning start point position along the original scanning path, and the ultrasonic C scanning imaging detection of the whole metal flat butt-joint bent welding line is finished by the reciprocating parallel scanning.
An automatic scanning method for the phased array ultrasonic detection of the bent weld joint is used for detecting the internal defects of the bent weld joint structural member, and comprises the following steps:
s1, selecting a phased array ultrasonic probe and an adaptive probe wedge block for detection according to the thickness of the metal flat butt-joint bent weld joint structural part, wherein the specific selection mode is as follows: when the thickness is 8-20 mm, activating 16 wafers by the phased array ultrasonic detection probe, and configuring a corresponding probe wedge block to detect the welding line; when the thickness is 20 mm-60 mm, the phased array ultrasonic detection probe activates 32 wafers, and a corresponding probe wedge block is configured to detect the welding seam.
S2, during ultrasonic detection, detecting the metal flat butt-joint bent weld joint structural part by using the selected phased array ultrasonic probe, and storing a scanned image into the phased array ultrasonic flaw detector.
S3, judging the internal quality condition of the metal flat butt-joint bent welding seam structural part through phased array ultrasonic detection analysis software on a computer, and specifically comprising the following steps: the method comprises the steps of setting a reasonable filtering range (needing to cover the dominant frequency of the phased array ultrasonic probe), setting a gate of the phased array ultrasonic probe at the position of a metal flat butt-joint bent welding line, displaying red, dark red and black in a scanned image (different in color depth), judging the property of a defect at the position, displaying the position of the welding line at the position according to the red, and not having serious internal defects at the position when the scanned image is displayed to be light green and light yellow.
It should be noted that many variations and modifications of the embodiments of the present invention fully described are possible and are not to be considered as limited to the specific examples of the above embodiments. The above examples are given by way of illustration of the invention and are not intended to limit the invention. In conclusion, the scope of the present invention should include those changes or substitutions and modifications which are obvious to those of ordinary skill in the art.
Claims (10)
1. An automatic scanning device for phased array ultrasonic detection of a bent weld joint is characterized by comprising a main frame, an adsorption device, a multi-axis motion device, a motion control device, a probe clamping device, an ultrasonic coupling device, a coupling water supply device and a phased array ultrasonic probe;
the vacuum sucking disc type vacuum sucking disc comprises a main frame, wherein an adsorption device and a multi-axis movement device are arranged on the main frame, the adsorption device comprises a sucking disc assembly, the multi-axis movement device comprises an X-axis module, a Y-axis module, a Z-axis module and an R-axis module, the X-axis module, the Y-axis module and the main frame are arranged on the same plane, the X-axis module is arranged on the main frame and arranged along the length direction of the main frame, the Y-axis module is arranged on a sliding block of the X-axis module, the R-axis module is arranged on a sliding block of the Y-axis module and a rotating shaft of the R-axis module is arranged along the Z-;
the motion control device is connected with and controls the multi-axis motion device, the probe clamping device is installed on a sliding block of the Z-axis module, the ultrasonic coupling device is clamped on the probe clamping device and connected with the coupling water supply device, and the phased array ultrasonic probe is installed on the ultrasonic coupling device.
2. The automated scanning device for phased array ultrasonic testing of curved welds of claim 1, wherein said suction cup assembly comprises a suction cup mounting bracket, a suction cup, a handle, said suction cup mounting bracket is mounted on the main frame, more than 2 of said suction cups are mounted on the suction cup mounting bracket and located on both sides of the main frame respectively, said handle is mounted on the suction cup mounting bracket.
3. The automated scanning device for phased array ultrasonic testing of curved welds of claim 2, wherein a control switch is provided on the handle to connect and control the suction cup.
4. The automated scanning device for phased array ultrasonic testing of curved welds of claim 1, wherein the X-axis module and the Y-axis module use a motor to drive a linear module, the R-axis module uses a rotating cylinder to drive a rotating shaft, and the Z-axis module uses a lifting rod with a buffer spring to drive a slide block.
5. The automatic scanning device for the phased array ultrasonic testing of the bending weld according to claim 1, wherein the probe clamping device comprises a fixing rod, a rotating shaft, a clamping frame, an adjusting knob and an elastic compression screw, the fixing rod is arranged along the X-axis direction, one end of the fixing rod is fixed on a sliding block of the Z-axis module, the other end of the fixing rod is connected with the clamping frame through the rotating shaft arranged along the Y-axis direction, the clamping frame is U-shaped, one side of the clamping frame is a fixed clamping arm, the other side of the clamping frame is a movable clamping arm connected with the adjusting knob, the fixed clamping arm and the movable clamping arm of the clamping frame are correspondingly provided with the elastic compression screw, and the ultrasonic coupling device is clamped and installed on the clamping frame.
6. The automated scanning device for phased array ultrasonic testing of curved welds of claim 1, wherein the coupled water supply comprises a water pump, a water reservoir, a solenoid valve, a controller, a control interface.
7. The automatic scanning device for the phased array ultrasonic detection of the bent weld joint according to any one of claims 1 to 6, characterized by further comprising a computer with phased array ultrasonic detection analysis software and motion control software, and a phased array ultrasonic flaw detector.
8. An automatic scanning method for ultrasonic detection of a phased array of a bent weld joint is characterized by comprising the following steps:
s1, selecting a phased array ultrasonic probe and an adaptive probe wedge according to the thickness of the metal flat butt-joint bent weld joint structural part;
s2, detecting the metal flat butt-jointed bent weld joint structural part by using the selected phased array ultrasonic probe and the automatic scanning device for the phased array ultrasonic detection of the bent weld joint according to any one of claims 1 to 7, and storing a scanned image into a phased array ultrasonic flaw detector;
and S3, judging the internal quality condition of the metal flat butt-joint bent welding seam structural part through phased array ultrasonic detection analysis software on a computer.
9. The automated scanning method for phased array ultrasonic testing of the bent weld according to claim 8, wherein in S1, when the thickness of the metal flat butt-bent weld structural member is 8mm to 20mm, the phased array ultrasonic testing probes and corresponding probe wedges of 16 wafers are selected, and when the thickness of the metal flat butt-bent weld structural member is 20mm to 60mm, the phased array ultrasonic testing probes and corresponding probe wedges of 32 wafers are selected.
10. The automated scanning method for the phased array ultrasonic testing of the bent weld according to claim 8, wherein in S3, a reasonable filtering range is set in phased array ultrasonic testing analysis software, a gate of a phased array ultrasonic probe is set at a position of a metal flat butt-joint bent weld, when a scanned image has red, deep red and black display, a relatively serious internal defect exists at the position, the nature of the defect is judged according to the position of the weld where the red display is located, and when the scanned image has light green and light yellow display, a relatively serious internal defect does not exist at the position.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113552215A (en) * | 2021-08-20 | 2021-10-26 | 山东沃克无损检测有限公司 | Phased array flaw detector detection method for T-shaped welding seam detection |
| CN113848375A (en) * | 2021-10-20 | 2021-12-28 | 国网湖南省电力有限公司 | Electrified detection device for internal devices of oil-insulated transformer and application method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113552215A (en) * | 2021-08-20 | 2021-10-26 | 山东沃克无损检测有限公司 | Phased array flaw detector detection method for T-shaped welding seam detection |
| CN113552215B (en) * | 2021-08-20 | 2023-12-08 | 山东沃克无损检测有限公司 | Phased array flaw detector detection method for T-shaped weld joint detection |
| CN113848375A (en) * | 2021-10-20 | 2021-12-28 | 国网湖南省电力有限公司 | Electrified detection device for internal devices of oil-insulated transformer and application method thereof |
| CN113848375B (en) * | 2021-10-20 | 2023-11-28 | 国网湖南省电力有限公司 | Electrified detection device for internal device of oil insulation transformer and application method thereof |
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