CN107490624B - Super thin metal weld inspection system and its detection method - Google Patents

Super thin metal weld inspection system and its detection method Download PDF

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Publication number
CN107490624B
CN107490624B CN201710851626.7A CN201710851626A CN107490624B CN 107490624 B CN107490624 B CN 107490624B CN 201710851626 A CN201710851626 A CN 201710851626A CN 107490624 B CN107490624 B CN 107490624B
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China
Prior art keywords
weld seam
ultrasonic
probe
track
weld
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CN201710851626.7A
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Chinese (zh)
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CN107490624A (en
Inventor
刘志毅
王俊涛
张祥春
郑友博
周言贤
刘安
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中国航空综合技术研究所
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Publication of CN107490624A publication Critical patent/CN107490624A/en
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Publication of CN107490624B publication Critical patent/CN107490624B/en

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00Investigating 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
    • G01N29/04Analysing solids
    • G01N29/06Visualisation of the interior, e.g. acoustic microscopy
    • G01N29/0654Imaging
    • G01N29/069Defect imaging, localisation and sizing using, e.g. time of flight diffraction [TOFD], synthetic aperture focusing technique [SAFT], Amplituden-Laufzeit-Ortskurven [ALOK] technique
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00Investigating 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
    • G01N29/22Details, e.g. general constructional or apparatus details
    • G01N29/24Probes
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00Investigating 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
    • G01N29/22Details, e.g. general constructional or apparatus details
    • G01N29/26Arrangements for orientation or scanning by relative movement of the head and the sensor
    • G01N29/262Arrangements for orientation or scanning by relative movement of the head and the sensor by electronic orientation or focusing, e.g. with phased arrays
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00Indexing codes associated with group G01N29/00
    • G01N2291/02Indexing codes associated with the analysed material
    • G01N2291/023Solids
    • G01N2291/0234Metals, e.g. steel
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00Indexing codes associated with group G01N29/00
    • G01N2291/02Indexing codes associated with the analysed material
    • G01N2291/028Material parameters
    • G01N2291/0289Internal structure, e.g. defects, grain size, texture
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00Indexing codes associated with group G01N29/00
    • G01N2291/26Scanned objects
    • G01N2291/267Welds
    • G01N2291/2675Seam, butt welding

Abstract

The present invention provides a kind of super thin metal weld inspection system,It includes scanning component and image analysis component,The scanning component is used to carry out scanning to super thin metal weld seam,Weld seam is obtained to be imaged and be sent to described image analytic unit,Described image analytic unit is used to analyze and determine the weld seam imaging received,The scanning component includes track,Ultrasonic phase array scanning frame,Ultrasonic time difference diffraction detection probe and multiple ultrasonic probes,The ultrasonic phase array scanning frame can be fastened on the track and slide on the track,The present invention provides a kind of super thin metal weld inspection system,It is simultaneously using ultrasonic phase array PAUT,Ultrasonic time difference diffraction approach TOFD,Tri- kinds of methods of conventional imaging ultrasound UT combine and weld seam are detected,More intuitively detect incomplete penetration defect,Prevent weld seam from cracking in use.

Description

Super thin metal weld inspection system and its detection method

Technical field

The present invention relates to metal welding seam detection field, more particularly to a kind of super thin metal weld inspection system and its detection Method.

Background technology

There is dedicated standard GB/T11345-2013 in ultrasound examination steel weld seam country.Also there is respective standard in shipbuilding industry CB/T3559-2011, but the no dedicated standard of the inspection of super thin metal butt weld, in this way for DAC curves, probe frequency Rate selects and the evaluation of defect causes centainly upper technical difficulty, prevents detection from being normally carried out, when detecting staff Do not know which kind of probe of selection and detection method are detected, cause to waste a large amount of time, and testing result is not yet Accurately.

On the other hand, in sheet metal detection field, not yet someone using the ultrasonic probe of phased array and routine into Row detection, and current scanning equipment is mainly for the ultrasound detection of magnetic material, lack for nonmagnetic metal thin plate into The scanning equipment of row Ultrasonic NDT, and existing scanning equipment design structure is generally more complicated, is not easy to dismantle and tie up Shield can not ensure that accurately scanning detects, limit its use under complex working conditions.

Invention content

The defects of in order to overcome the prior art, the present invention provide a kind of super thin metal weld inspection system, use simultaneously Tri- kinds of ultrasonic phase array PAUT, ultrasonic time difference diffraction approach TOFD, conventional imaging ultrasound UT methods combine and weld seam are detected, more Intuitive detection incomplete penetration defect, prevents weld seam from cracking in use.

The invention is realized in this way:

The present invention provides a kind of super thin metal weld inspection system, described including scanning component and image analysis component Scanning component is used to carry out scanning to super thin metal weld seam, obtains weld seam and is imaged and is sent to described image analytic unit, described Image analysis component is used to analyze and determine that the scanning component includes track, is fastened on institute to the weld seam imaging received State the ultrasonic phase array scanning frame slided on track and on the track, ultrasonic time difference diffraction detection probe and multiple ultrasounds Probe, the ultrasonic phase array scanning frame are provided with ultrasonic phase array detection probe, the ultrasonic phase array scanning frame include with Driving mechanism, the first encoder, bindiny mechanism and the probe loading arm of the track connection, the driving mechanism include driving Stent, driving wheel and idler wheel, the both sides of the driving arm are respectively provided with two idler wheels, can be slided by means of idler wheel along track, The driving wheel is used to adjust the width of the driving arm and the angle of the idler wheel to adapt to the workpiece table of different curvature Face, the first side of the driving arm are fixedly connected with first encoder, the bindiny mechanism include cross connecting plate, Longitudinally connected plate and adjusting connecting plate, the first end of the cross connecting plate are fixed on the second side of the driving arm On, the second end of the cross connecting plate is fixedly connected by elastic component with the top of the longitudinally connected plate, the longitudinal direction The lower part of connecting plate is fixed with the adjusting connecting plate, and the adjusting connecting plate is connected with the probe loading arm;The ultrasound Probe, ultrasonic phase array detection probe or ultrasonic time difference diffraction detection probe communicate with described image analytic unit connect respectively.

Preferably, the distance between two described idler wheels of the first side of the driving arm are less than the two of the second side The distance between a described idler wheel, the both sides that the idler wheel is connected to the track plates by the groove at middle part simultaneously can be along the rail Guidance tape slides.

Preferably, described including track support and track plates, the track support includes pedestal, regulating part and track Connecting plate, the top of the regulating part are fixedly connected with the track connecting plate, and the lower part of the regulating part is consolidated with the pedestal Fixed to connect and pedestal is absorbed and fixed in plane, the regulating part is configured to adjust the height of the track support, described The both ends of track plates are fixed respectively with the track connecting plate.

Preferably, the track plates are straight rail guidance tape or curved track guidance tape.

Preferably, the radian of the track plates is more than 60 °.

The present invention also provides a kind of super thin metal weld inspection methods, include the following steps:

S1, ultrasonic phase array detection probe, ultrasonic time difference diffraction detection probe are chosen according to the thickness and shape of metallic plate And one kind, two or three of the mode of conventional imaging ultrasonic probe are detected, specific choice mode is as follows:

1. when weld seam is more than 6mm, using ultrasonic phase array detection probe and ultrasonic time difference diffraction detection probe to weld seam It is detected;

2. when weld seam is less than 6mm, weld seam is detected using conventional imaging ultrasonic probe, single probe is emitted 45 ° Ultrasonic beam when being incident on the end angular zone of workpiece root, stronger end corner reflection signal, signal depth and root can be received Portion's regional depth is consistent;

S2, when weld seam is more than 6mm, ultrasonic phase array detection probe is mounted on ultrasonic phase array scanning frame, will be super Sound time difference diffraction detection probe is mounted on hand-held frame, is utilized respectively ultrasonic phase array scanning frame and hand-held frame and weld seam is carried out Detection, and the scan image of acquisition is separately sent to image analysis component;

When weld seam is less than 6mm, weld seam is detected using conventional imaging ultrasonic probe, obtains weld seam imaging, and will Imaging is sent to image analysis component, and probe is placed in apart from the position of a certain fixed value of axis of a weld, probe during ultrasound detection It is moved along bead direction is parallel to, probe can be placed in the position that deflection angle is 90 ° or 270 °;

S3, butt welding are seamed into as being analyzed, and are judged the welding situation of weld seam, are specifically included:

The image for obtaining ultrasonic phase array detection probe for being more than the weld seam of 6mm and the first defect collection of illustrative plates compare, and obtain The defects of taking weld seam quantity A compares the image for obtaining ultrasonic time difference diffraction detection probe and the second defect collection of illustrative plates, obtains weldering The defects of seam quantity B and weld seam difference A-B, when weld seam difference A-B ranges are in -2 to 2, judge this time to detect effective, output Defect result, when difference range is in except -2 to 2, it is invalid to judge this time to detect;

For being less than the weld seam of 6mm, when weld seam imaging output is red line, then metal welding seam is lack of penetration;When weld seam is imaged It exports when being red, then metal welding seam welding is spent big.

Preferably, the ultrasonic phase array detection probe is arc chip, and the arc chip is equipped with inside and outside radian wedge Block.

Preferably, the frequency of ultrasonic time difference diffraction detection probe is 20MHz.

Preferably, when being detected in S2 using conventional imaging ultrasonic probe to weld seam, conventional imaging surpasses in detection process Sonic probe can be imaged by time scanning, can also be installed encoder scan additional by probe and be imaged.

Preferably, in S1, when need detect workpiece root weld situation when, using conventional imaging ultrasonic probe to weld seam into Row detection.

Compared with prior art, the invention has the advantages that:

1. the present invention provides a kind of super thin metal weld inspection system, when using ultrasonic phase array PAUT, ultrasound simultaneously Tri- kinds of poor diffraction approach TOFD, conventional imaging ultrasound UT methods combine and weld seam are detected, and more intuitively detect incomplete penetration defect, Prevent weld seam from cracking in use.

2. conventional Ultrasound detection is not applied to for > 6mm plates, in the art, those skilled in the art can only utilize conventional super Sound detection probe detection thickness is more than the metallic plate of 6mm, and the measurement result that metallic plate of the detection thickness less than 6mm obtains is inaccurate True, the invention becomes smaller conventional transducer, can not only detect thickness and be less than the metallic plate of 6mm, and detect knot Fruit is very accurate, solves the technology prejudice of this field.

3. using probe incorporated imaging display, compared to being shown into wave for conventional ultrasound method, detection knot is judged by waveform Fruit, imaging display is more intuitive, accurate, if lack of penetration, image is into red line;If there is stomata, image Cheng Hongdian.It can be straight Sight judges that weld seam bottom whether there is the problem of lack of penetration.

4. the present invention introduces the ultrasonic time difference diffraction approach of high frequency 20MHz, profit in the Sheet lock bottom weld seam detection less than 4mm With this method to the high sensitivity (up to 0.1mm) of crack defect, in the weld seam that can be placed at this method sonde configuration Crack defect be detected, greatly improve the recall rate of crackle, ensure that the safety of structure.

Description of the drawings

Fig. 1 is the structural diagram of the present invention;

Fig. 2 is the structure diagram of the scanning frame of the present invention;

Fig. 3 is the connection diagram of the second encoder of the manual checking of another embodiment of the present invention;

Fig. 4 is the side view of the rail mechanism of the present invention;

Fig. 5 is sheet workpiece root end corner reflection schematic diagram in embodiment;

Fig. 6 is detection workpiece and weld seam form schematic diagram in embodiment

Ultrasonic beam schematic diagram when Fig. 7 is butt weld of thin plates complete penetraction and fusion in welding in embodiment;

Fig. 8 is that there is no ultrasonic imaging views during incomplete root penetration for weld seam in embodiment;

Fig. 9 is ultrasonic beam schematic diagram when butt weld of thin plates is lack of penetration in embodiment;

Figure 10 is that there are ultrasonic imaging views during incomplete root penetration for weld seam in embodiment.

Specific embodiment

Below with reference to the attached drawing exemplary embodiment that the present invention will be described in detail, feature and aspect.It is identical attached in attached drawing Icon note represents functionally the same or similar element.Although the various aspects of embodiment are shown in the drawings, unless special It does not point out, it is not necessary to attached drawing drawn to scale.

The present invention provides a kind of super thin metal weld inspection system, as shown in Figure 1, it includes scanning component 100 and figure As analytic unit 200, scanning component 100 is used to carry out scanning to super thin metal weld seam, obtains weld seam and is imaged and is sent to image Analytic unit 200, image analysis component 200 are used to analyze and determine the weld seam imaging received.

Image analysis component 200 includes the first image analyzing unit 201, the second image analyzing unit 202 and third figure As analytic unit 203, the scan image that the first image analyzing unit 201 is used to obtain ultrasonic phase array is analyzed, and second The scan image that image analyzing unit 202 is used to obtain ultrasonic time difference diffraction detection probe is analyzed, third image analysis The scan image that unit 203 is used to obtain conventional ultrasound probe is analyzed.

As shown in figs 2-4, scanning component 100 includes track 1, ultrasonic phase array scanning frame 2, the detection of ultrasonic time difference diffraction Probe and multiple ultrasonic probes, the ultrasonic phase array scanning frame can be fastened on the track and slide on the track It is dynamic,

Track 1 includes track support 11 and track plates 12, and track support 11 includes pedestal 111, regulating part 112 and rail Road connecting plate 113, the top of regulating part 112 are fixedly connected with track connecting plate 113, and the lower part of regulating part 112 and pedestal 111 are solid Fixed to connect and pedestal 11 is absorbed and fixed in plane, regulating part 112 is configured to the height of adjustment track support 11, track plates 12 both ends are fixed respectively with track connecting plate 113, and the bottoms of track plates 113 is equipped with adjustment lower margin 121, and regulating part 112 is by rail After the height of road stent is adjusted to suitable position, pedestal 11 is fixed on workpiece surface to be checked, the adjustment of 12 bottom of track plates 121 adjust automatically of foot makes entire track plates 12 keep horizontality, convenient for the scanning of sheet metal straight weld.Ultrasonic phase array Scanning frame 2 includes the driving mechanism 21 being connect with track plates 12, the first encoder 22, bindiny mechanism 23 and probe loading arm 24, driving mechanism 21 includes driving arm 211, driving wheel 212 and idler wheel 213, and the both sides of driving arm 211 are respectively provided with two The distance between idler wheel 213, two idler wheels of 211 first side of driving arm be less than the second side two idler wheels between away from From four rolling is connected to the both sides of track plates 12 by the groove at middle part, driven in isosceles trapezoid distribution setting, idler wheel 213 Driving device in stent 211 can drive scanner to be slided along track plates 12, and driving wheel 212 is configured to adjustment driving arm 211 width and the angle of idler wheel 213 are to adapt to the workpiece surface of different curvature, the first side of driving arm 211 and the One encoder 22 is fixedly connected, and bindiny mechanism 23 includes cross connecting plate 231, longitudinally connected plate 232 and adjusts connecting plate 233, the first end of cross connecting plate 231 is fixed on the second side of driving arm 211, and the second of cross connecting plate 231 End is fixedly connected by elastic component with the top of longitudinally connected plate 232, and longitudinally connected plate 232 can be up and down along longitudinal direction, The lower part of longitudinally connected plate 232, which is fixed with, adjusts connecting plate 233, adjusts connecting plate 233 and is connected with probe loading arm 24, the company of adjusting Fishplate bar 233 can adjust the angle of probe loading arm 24, and then adjust the position of probe, and longitudinally connected plate 232 is connected with adjusting The cooperation of plate 233 enables probe all-direction rotation, and flexibility is more preferable, can be preferably bonded with workpiece to be checked, and high-precision completes scanning Work.

Preferably, the elastic component of the present embodiment is two springs, is respectively distributed in the left and right sides of longitudinally connected plate 232, is risen Effect that is fixed and adjusting longitudinally connected plate, so as to which probe be made more to be bonded with workpiece to be checked.

Preferably, the pedestal 11 of the present embodiment is rubber suction cups, and regulating part 112 can discharge air in sucker, by pedestal 11 are securely fastened on workpiece surface to be checked, keep stablizing and entire track plates being made to keep horizontality for entire rail mechanism.

Track plates 12 are the track plates that can be replaced, and track plates can be straight rail plate or curved track guidance tape, the length of track plates It is short to be selected according to working condition.When the girth joint of detection pipe docking, using curved track guidance tape, track plates 12 Radian can be adjusted, and general radian is more than 60 °, during detection, by curved track guidance tape be adjusted to needed for radian when, regulating part 112 will Air discharge in pedestal 111 makes its absorption be adjusted together by the driving wheel 212 of driving mechanism 21 on the surface of workpiece to be checked The distance between side wheel and angle adapt it to the curvature of workpiece surface, and the groove of idler wheel is connected on track plates, open Driving device, ultrasonic phase array scanning frame 2 are stablized on curve surface work pieces are detected, swimmingly walk, and improve detection quality.

More than, the automatic scanning of scanner can be achieved in the combination of driving mechanism 21 and track 1.

It in another embodiment, can be without rail mechanism, using hand when the more complicated unsuitable automatic scanning of working condition Formula scanning mode is held, as shown in Fig. 2, the outside portion for adjusting connecting plate 233 is fixedly connected with second encoder 25, at this point, using 25 recording distance of second encoder completes the manual checking of workpiece to be checked.

The present invention also provides a kind of super thin metal weld inspection methods, include the following steps:

S1, ultrasonic phase array detection probe, ultrasonic time difference diffraction detection probe are chosen according to the thickness and shape of metallic plate And one kind, two or three of the mode of conventional imaging ultrasonic probe are detected, specific choice mode is as follows:

1. when weld seam is more than 6mm, using ultrasonic phase array detection probe and ultrasonic time difference diffraction detection probe to weld seam It is detected;

2. when weld seam is less than 6mm, weld seam is detected using conventional imaging ultrasonic probe;

S2, when weld seam is more than 6mm, ultrasonic phase array detection probe is mounted on ultrasonic phase array scanning frame, will be super Sound time difference diffraction detection probe is mounted on hand-held frame, is utilized respectively ultrasonic phase array scanning frame and hand-held frame and weld seam is carried out Detection, and the scan image of acquisition is separately sent to image analysis component;

When weld seam is less than 6mm, weld seam is detected using conventional imaging ultrasonic probe, obtains weld seam imaging, and by B Imaging is sent to image analysis component;

S3, butt welding are seamed into as being analyzed, and are judged the welding situation of weld seam, are specifically included:

The image for obtaining ultrasonic phase array detection probe for being more than the weld seam of 6mm and the first defect collection of illustrative plates compare, and obtain The defects of taking weld seam quantity A compares the image for obtaining ultrasonic time difference diffraction detection probe and the second defect collection of illustrative plates, obtains weldering The defects of seam quantity B, defects count A and defects count B are made the difference, when difference range be in -2 to 2 when, judge this time detection have Effect exports defect result, and when difference range is in except -2 to 2, it is invalid to judge this time to detect;

For being less than the weld seam of 6mm, when weld seam imaging output is red line, then metal welding seam is lack of penetration;When weld seam is imaged It exports when being red, then metal welding seam welding is spent big.

Preferably, the ultrasonic phase array detection probe is arc chip, and the arc chip is equipped with inside and outside radian wedge Block.

Preferably, the frequency of ultrasonic time difference diffraction detection probe is 20MHz.

Specific embodiment

Thin-walled weld seam list Probe Ultrasonic Searching B-scan image checking application case

Thin board welding seam incomplete root penetration defects detection principle:Single 302 45 ° of ultrasonic beams of transmitting of probe are incident on workpiece 300 During the end angular zone 301 of 90 ° of root, stronger end corner reflection signal can be received, signal depth is consistent with root area depth, As shown in figure 5, wherein beampath is as shown in 303.

Detect workpiece and detection process description:

The workpiece of this detection case is 4mm, and material is carbon steel, and weld seam form is butt weld, is popped one's head in mono- for 5MHz Probe, probe is placed in apart from the position of a certain fixed value of axis of a weld (stepping offset) during ultrasound detection, and probe edge is parallel to Bead direction moves, and ultrasonic B-scan detector can be imaged by time scanning in detection process, can also be installed additional by popping one's head in Encoder scan is imaged, and probe can be placed in the position that deflection angle is 90 ° or 270 °, the information such as workpiece and probe positions, direction As shown in fig. 6, wherein 0 is scanning starting point, arrow show scanning direction.

Thin board welding seam incomplete root penetration defect ultrasound B-scan image checking application:

1) incomplete root penetration is not present in weld seam

When incomplete root penetration being not present in butt weld of thin plates, root of weld fusion is preferable, and ultrasonic beam is incident on root Position, there is no stronger reflection signals, and therefore, 4mm corresponding positions are not deposited in ultrasonic imaging A sweep and B-scan view In higher reflection wave amplitude and red line, as shown in Figure 7 and Figure 8.

2) there are incomplete root penetrations in weld seam

There are during incomplete root penetration in butt weld of thin plates, the root of weld can form the end angle in Fig. 1, and ultrasonic beam is incident During to the 90 ° of end Angle Positions in root, stronger root end corner reflection signal can be received, therefore, is swept in ultrasonic imaging A sweep and B It retouches 4mm corresponding positions in view and there is higher reflection wave amplitude and red line, see Fig. 9 and Figure 10.

Therefore, it is had the following advantages using thin-walled weld seam list Probe Ultrasonic Searching B-scan image checking:

1. combining ultrasonic B-scan imaging detection method using end corner reflection principle can successfully detect that plate thickness 4mm is docked The incomplete root penetration defect of weld seam;

2. single Probe Ultrasonic Searching B-scan imaging method is applied to butt weld of thin plates incomplete root penetration defects detection, method Simple and practicable, detection is flexible, defect intuitive display, it is easier to judge.

Compared with prior art, the invention has the advantages that:

1. the present invention provides a kind of super thin metal weld inspection system, when using ultrasonic phase array PAUT, ultrasound simultaneously Tri- kinds of poor diffraction approach TOFD, conventional imaging ultrasound UT methods combine and weld seam are detected, and more intuitively detect incomplete penetration defect, Prevent weld seam from cracking in use.

2. conventional Ultrasound detection is not applied to for > 6mm plates, in the art, those skilled in the art can only utilize conventional super Sound detection probe detection thickness is more than the metallic plate of 6mm, and the measurement result that metallic plate of the detection thickness less than 6mm obtains is inaccurate True, the invention becomes smaller conventional transducer, can not only detect thickness and be less than the metallic plate of 6mm, and detect knot Fruit is very accurate, solves the technology prejudice of this field, has prominent substantive distinguishing features.

3. using probe incorporated imaging display, compared to being shown into wave for conventional ultrasound method, detection knot is judged by waveform Fruit, imaging display is more intuitive, accurate, if lack of penetration, image is into red line;If there is stomata, image Cheng Hongdian.It can be straight Sight judges that weld seam bottom whether there is the problem of lack of penetration.

Finally it should be noted that:Above-described embodiments are merely to illustrate the technical scheme rather than to it Limitation;Although the present invention is described in detail referring to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: It can still modify to the technical solution recorded in previous embodiment or to which part or all technical features into Row equivalent replacement;And these modifications or substitutions, it does not separate the essence of the corresponding technical solution various embodiments of the present invention technical side The range of case.

Claims (10)

1. a kind of super thin metal weld inspection system, including scanning component and image analysis component, the scanning component is used for Scanning is carried out to super thin metal weld seam, weld seam is obtained and is imaged and is sent to described image analytic unit, described image analytic unit For being analyzed and determined to the weld seam received imaging, it is characterised in that:
The ultrasonic phase array scanning that the scanning component includes track, is fastened on the track and slides on the track Frame, ultrasonic time difference diffraction detection probe and multiple ultrasonic probes, the ultrasonic phase array scanning frame are provided with ultrasonic phase array Detection probe, the ultrasonic phase array scanning frame include the driving mechanism being connect with the track, the first encoder, bindiny mechanism And probe loading arm, the driving mechanism include driving arm, driving wheel and idler wheel, the both sides of the driving arm are respectively set There are two idler wheel, the driving arm can be slided by means of idler wheel along track, and the driving wheel adjusts the width of the driving arm The angle of degree and the idler wheel is to adapt to the workpiece surface of different curvature, the first side of the driving arm and described first Encoder is fixedly connected, and the bindiny mechanism includes cross connecting plate, longitudinally connected plate and adjusts connecting plate, and the transverse direction connects The first end of fishplate bar is fixed on the second side of the driving arm, and the second end of the cross connecting plate passes through elasticity Part is fixedly connected with the top of the longitudinally connected plate, and the lower part of the longitudinally connected plate is fixed with the adjusting connecting plate, institute It states adjusting connecting plate and is connected with the probe loading arm;And when the ultrasonic probe, ultrasonic phase array detection probe or ultrasound Poor diffraction detection probe communicates with described image analytic unit connect respectively.
2. super thin metal weld inspection system according to claim 1, it is characterised in that:First side of the driving arm The distance between two idler wheels in portion are less than the distance between two described idler wheels of the second side, and the idler wheel is in The both sides that the groove in portion is connected to the track plates can simultaneously be slided along the track plates.
3. super thin metal weld inspection system according to claim 2, it is characterised in that:The track includes track support And track plates, the track support include pedestal, regulating part and track connecting plate, the top of the regulating part and the rail Road connecting plate is fixedly connected, and the lower part of the regulating part is fixedly connected with the pedestal and pedestal is absorbed and fixed in plane, The regulating part is configured to adjust the height of the track support, the both ends of the track plates respectively with the track connecting plate It is fixed.
4. super thin metal weld inspection system according to claim 3, it is characterised in that:The track plates are straight rail guidance tape Or curved track guidance tape.
5. super thin metal weld inspection system according to claim 4, it is characterised in that:The radian of the curved track guidance tape More than 60 °.
6. a kind of super thin metal weld inspection method, it is characterised in that:It includes the following steps,
S1, chosen according to the thickness and shape of metallic plate ultrasonic phase array detection probe, ultrasonic time difference diffraction detection probe and One kind of conventional imaging ultrasonic probe, two or three of mode are detected, and specific choice mode is as follows:
1. when weld seam is more than 6mm, weld seam is carried out using ultrasonic phase array detection probe and ultrasonic time difference diffraction detection probe Detection;
2. when weld seam is less than 6mm, weld seam is detected using conventional imaging ultrasonic probe, by the super of single 45 ° of probe transmitting When beam of sound is incident on the end angular zone of workpiece root, stronger end corner reflection signal, signal depth and root area can be received Domain depth is consistent;
S2, when weld seam is more than 6mm, ultrasonic phase array detection probe is mounted on ultrasonic phase array scanning frame, during by ultrasound Poor diffraction detection probe is mounted on hand-held frame, is utilized respectively ultrasonic phase array scanning frame and hand-held frame examines weld seam It surveys, and the scan image of acquisition is separately sent to image analysis component;
When weld seam is less than 6mm, weld seam is detected using conventional imaging ultrasonic probe, obtains weld seam imaging, and will imaging It is sent to image analysis component, probe is placed in apart from the position of a certain fixed value of axis of a weld during ultrasound detection, is popped one's head in along flat Row is moved in bead direction, and probe is placed in the position that deflection angle is 90 ° or 270 °;
S3, butt welding are seamed into as being analyzed, and are judged the welding situation of weld seam, are specifically included:
The image for obtaining ultrasonic phase array detection probe for being more than the weld seam of 6mm and the first defect collection of illustrative plates compare, and obtain weldering The defects of seam quantity A, the image that ultrasonic time difference diffraction detection probe is obtained and the second defect collection of illustrative plates are compared, obtain weld seam Defects count B and weld seam difference A-B when weld seam difference A-B ranges are in -2 to 2, judge this time to detect effectively, exports defect As a result, when difference range is in except -2 to 2, it is invalid to judge this time to detect;
For being less than the weld seam of 6mm, when weld seam imaging output is red line, then metal welding seam is lack of penetration;It is exported when weld seam is imaged At red, then metal welding seam welding is spent big, and when weld seam imaging does not export red line or at red, then metal welding seam welding is normal.
7. super thin metal weld inspection method according to claim 6, it is characterised in that:The ultrasonic phase array detection is visited Head is arc chip, and the arc chip is equipped with inside and outside radian voussoir.
8. super thin metal weld inspection method according to claim 6, it is characterised in that:Ultrasonic time difference diffraction detection probe Frequency be 20MHz.
9. super thin metal weld inspection method according to claim 6, it is characterised in that:Conventional imaging ultrasound is utilized in S2 When probe is detected weld seam, conventional imaging ultrasonic probe is imaged by time scanning or is installed additional by popping one's head in detection process Encoder scan is imaged.
10. super thin metal weld inspection method according to claim 6, it is characterised in that:In S1, when need detect workpiece During root weld situation, weld seam is detected using conventional imaging ultrasonic probe.
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