CN107340328A - A kind of weldment defect detecting system and detection method - Google Patents
A kind of weldment defect detecting system and detection method Download PDFInfo
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Abstract
The invention discloses a kind of weldment defect detecting system and detection method, the weldment defect detecting system includes：Host computer；The magneto-optic ultrasonic wave module being connected with the host computer；The magnetic field generator being connected with the host computer；Wherein, the magneto-optic ultrasonic wave module and the magnetic field generator are used for the both sides for being separately positioned on weldment to be detected；The host computer is used to obtain the magneto optic images of the weldment to be detected by the magneto-optic ultrasonic wave module and the magnetic field generator and detects the echo-signal of ultrasonic wave, defect is judged whether based on the echo-signal and determines the positions and dimensions of defect, the type of defect is determined based on the magneto optic images.When technical solution of the present invention detects weldment defect, have the advantages that accuracy of detection is high, reliable, easy to use and pollution-free.
Description
Technical field
The present invention relates to weldment defect detecting technique field, in particular, be related to a kind of weldment defect detecting system with
And detection method.
Background technology
Welding technique is the basis of industry manufacture.In welding process, due to the shadow by the various disturbing factors of welding scene
Ring, such as laser power, speed of welding, defocusing amount, argon flow amount, HTHP and workpiece surface situation, welding process meeting
There is unstable state, and then crack, be lack of penetration, the weld defect such as depression, stomata.
The performance of the generation serious threat welding point of weld defect, stress raisers, shortening workpiece are caused to use the longevity
Life, easy brittle failure etc., cause product hidden danger of quality to be present, product will be caused directly to scrap when serious, and influence processing efficiency and economy
Benefit.If the product that hidden danger of quality be present fails to be come into the market by timely and effective detection, after certain service life
Major accident is would potentially result in, in order to ensure welding product quality, it is necessary to which Welded Joints are detected.
By foregoing description, weld defect, which has, to be seriously endangered, how to provide a kind of implementation accuracy of detection it is high,
Reliable, easy to use and free of contamination weldment defect detecting system and method, which are that welding products test field is urgently to be resolved hurrily, asks
Topic.
The content of the invention
To achieve these goals, technical solution of the present invention provides a kind of weldment defect detecting system and method, this
When inventive technique scheme detects weldment defect, have the advantages that accuracy of detection is high, reliable, easy to use and pollution-free.
To achieve these goals, the present invention provides following technical scheme：
A kind of weldment defect detecting system, the weldment defect detecting system include：
Host computer；
The magneto-optic ultrasonic wave module being connected with the host computer；
The magnetic field generator being connected with the host computer；
Wherein, the magneto-optic ultrasonic wave module and the magnetic field generator are used to be separately positioned on the two of weldment to be detected
Side；The host computer is used to obtain the weldment to be detected by the magneto-optic ultrasonic wave module and the magnetic field generator
The magneto optic images and the echo-signal for detecting ultrasonic wave, defect is judged whether based on the echo-signal and determines defect
Positions and dimensions, the type of defect is determined based on the magneto optic images.
Preferably, in above-mentioned weldment defect detecting system, the magneto-optic ultrasonic wave module includes：
The magneto-optical sensor being connected with the host computer, when by the magnetic field generator to the weldment excitation to be detected
When, the magneto-optical sensor is used to obtain the magneto optic images for including the weldment weld information to be detected；
The ultrasonic sensor being connected with the host computer, the ultrasonic sensor are used to pass through ultrasonic probe to institute
State weldment transmitting detection ultrasonic wave to be detected, the echo-signal of acquisition testing ultrasonic wave；
Wherein, the host computer is used to establish defect recognition model by Digital Image Processing and pattern-recognition, realizes
Defect is classified, and for carrying out noise reduction process and data analysis to the echo-signal, determines the positions and dimensions of defect.
Preferably, in above-mentioned weldment defect detecting system, the magneto-optic ultrasonic wave module also includes：
Housing, the housing are interior with the first chamber for being used to install the ultrasonic sensor and described for installing
The second chamber of magneto-optical sensor；
Be arranged on the ultrasonic sensor connecting plate of the outer surface of the housing, the ultrasonic wave connection plate be used for it is described
Ultrasonic sensor connects；The ultrasonic wave connection plate is connected with Ultrasonic Sensor Data line；The ultrasound data lines are used
It is connected in the host computer；
The magneto-optical sensor power line and magneto-optical sensor data wire being connected with the magneto-optical sensor；The magneto-optic passes
Sensor power line and the magneto-optical sensor data wire are drawn outside the housing by being arranged on the through hole of the surface of shell
Portion, and be connected with the host computer.
Preferably, in above-mentioned weldment defect detecting system, the ultrasonic sensor connecting plate, the magneto-optical sensor
Power line and the magneto-optical sensor data wire are arranged on the same outer surface of the housing.
Preferably, in above-mentioned weldment defect detecting system, in addition to：Non-Destructive Testing platform, the Non-Destructive Testing platform
With the fixture for fixing the weldment to be detected；
When carrying out defects detection to the weldment to be detected, the magnetic field generator be located at the weldment to be detected with it is described
Between Non-Destructive Testing platform；The magneto-optic ultrasonic wave module is located at the side that the weldment to be detected deviates from the magnetic field generator
Surface.
Preferably, in above-mentioned weldment defect detecting system, in addition to：Motor and the motor control with the motor connection
Cabinet processed；The motor controlling cabinet is used for by the movement of Non-Destructive Testing plateau levels and/or vertical shift described in the motor control.
Preferably, in above-mentioned weldment defect detecting system, the host computer is additionally operable to show the magneto optic images, judgement
As a result, one in the type of the position of defect, the size of defect and defect or multiple.
Preferably, in above-mentioned weldment defect detecting system, the magnetic field generator is used to enter the weldment to be detected
Row rotating excitation field encourages, with to the weldment excitation to be detected.
Present invention also offers a kind of weldment defect inspection method, for the weldment defects detection system described in any of the above-described
System, it is characterised in that the weldment defect inspection method includes：
Obtain the magneto optic images of weldment to be detected and obtain the echo-signal of ultrasound examination ultrasonic wave；
Defect is judged whether based on the echo-signal and determines the positions and dimensions of defect, based on the magneto-optic
Image determines the type of defect.
Preferably, in above-mentioned weldment defect inspection method, the magneto optic images for obtaining weldment to be detected include：
Rotating excitation field excitation is carried out to the weldment to be detected, to the weldment excitation to be detected, to obtain comprising described
The magneto optic images of weldment weld information to be detected.
In the weldment defect detecting system and method that are provided by foregoing description, technical solution of the present invention, pass through
The magneto-optic ultrasonic wave module and the magnetic field generator obtain the magneto optic images and detection ultrasound of the weldment to be detected
The echo-signal of ripple, defect is judged whether based on the echo-signal and determines the positions and dimensions of defect, based on institute
State the type that the magneto optic images determine defect.It can be seen that in technical solution of the present invention, realize that defect is examined by magnetic field and ultrasonic wave
Survey, accuracy of detection is high, reliable, easy to use and pollution-free.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
The embodiment of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis
The accompanying drawing of offer obtains other accompanying drawings.
The principle schematic for the magneto-optic imaging that Fig. 1 provides for the embodiment of the present invention；
Fig. 2 is a kind of magnetic field line distribution schematic diagram of rotating excitation field provided in an embodiment of the present invention；
Fig. 3 is a kind of ultrasound examination operation principle schematic diagram provided in an embodiment of the present invention；
A kind of Fig. 4 positions structural representation of weld defects detection system provided in an embodiment of the present invention；
A kind of Fig. 5 positions structural representation of magneto-optic ultrasonic wave module provided in an embodiment of the present invention；
Weldment defect detecting system described in the embodiment of the present invention of Fig. 6 positions carries out the operation principle schematic diagram of defects detection；
Fig. 7 is a kind of schematic flow sheet of weldment defect inspection method provided in an embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
Welding technique is the basis of industry manufacture.In welding process, due to the shadow by the various disturbing factors of welding scene
Ring, such as laser power, speed of welding, defocusing amount, argon flow amount, HTHP and workpiece surface situation, in welding process
Unstable state occurs, and then cracks, is lack of penetration, depression and the weld defect such as stomata.
The performance of the generation serious threat weldering weldment of weld defect, causes stress raisers, shortens workpiece service life
And the problems such as easy brittle failure, cause product hidden danger of quality to be present, product will be caused directly to scrap when serious, influence processing efficiency and
Economic benefit.If the product that hidden danger of quality be present fails to be come into the market by timely and effective detect, passing through certain use
Major accident is would potentially result in after life-span, therefore, in order to ensure welding product quality, it is necessary to which butt-welding fitting carries out defect inspection
Survey.
Butt-welding fitting carries out the common detection methods of Non-Destructive Testing mainly including following several：
(1) ray detection method：The usually used radiographic source of ray detection is X ray, gamma-rays and neutron ray etc., is penetrated
Using the ray scanning weldment weld of high-penetration when line detects defect, in detection process due to weldment rejected region with it is intact
Fall into that position is different to the adsorption capacity of ray, judge weldering to be detected so as to intensity level after projecting weldment according to ray
Whether there is defect inside part.
(2) detection method of eddy：EDDY CURRENT is a kind of contactless electromagnetic nondestructive testing, with the same metal of electromagnetic field
Between electromagnetic induction detected.When being connected with high frequency alternating current in detection coil, the friendship of corresponding frequencies is produced around coil
Varying magnetic field.When alternating magnetic field counter conductor moves, then the electric current of vortex shape can be produced in conductor, that is, is vortexed.Work as conductive surface
Or sub-surface it is cracked the defects of when Eddy Distribution and intensity change, can use search coil detection coil in voltage or
Impedance variations, processing is carried out to the signal of collection can defect in indirect detection conductor.
(3) Liquid penetrant testing method：Workpiece surface coats the bleeding agent containing fluorescent dye or illuminating colour after over cleaning,
Bleeding agent can be penetrated into Surface-breaking defect under capillary action, developer is applied in workpiece surface again after drying, certain
The bleeding agent vestige of fault location is shown under light source, so as to detect the pattern of defect and distribution.
(4) magnaflux：Magnetic powder inspection is to detect ferromagnetism material by the accumulation of magnetic stray field near defect
Expect a kind of lossless detection method of surface and subsurface defect.When the good magnetic of magnetic conductivity is applied on object, defect
Neighbouring stray field will hold magnetic, form visible magnetic vestige from heap so as to which defect is shown.
(5) laser vision detects：Laser vision detection method of the application structure light as LASER Light Source, is passed with laser vision
Sensor is imaged to face of weld, obtains a branch of structure optical signal of section of weld joint, and the signal accurately measures seam cross-section
Forming parameter.It can realize that weld defect is rebuild and assessed by technologies such as three-dimensional reconstruction, pattern-recognitions.
(6) other detection methods.It is that rejected region stress concentration is deformed or is broken such as acoustic emission testing technology,
And strain energy is discharged in the form of elastic wave, signaled by analysis sound and determine defect., can in detection such as infrared detection technology
So that a constant hot-fluid is injected into workpiece, if existing defects in workpiece, due to defect area and the thermal diffusion coefficient of nondefective zone
With regard to difference, then will be variant in the Temperature Distribution of workpiece surface, the internal defective surface temperature with corresponding to zero defect
With regard to difference, the infrared waves thus sent (heat radiation) is also just different, can respond infrared waves using infrared detector and turn
Changing the function of correspondingly sized electric signal into, point by point scanning workpiece surface is obtained with the distribution situation of workpiece surface temperature, from
And workpiece surface temperature abnormal area is found, determine the position of inside workpiece defect.
Above-mentioned various common detection methods are respectively provided with certain limitation, specific as follows：
It is more difficult that ray detection method detects to platelet defect, and overall cost is of a relatively high, and thickness of workpiece is restricted, and is examined
Speed can be relatively slow, and ray has injury to human body, need to consider the security protection problem of human body.
Detection method of eddy is only applicable to conductive bonding material, it is difficult to for complex-shaped test specimen；Can only detect material or
The surface of workpiece, near surface flaw；Testing result is not directly perceived, it is difficult to differentiates species, property and shape, size of defect etc..
Liquid penetrant testing method is generally used for detecting the surface opening of nonabsorbable welding material (such as steel, non-ferrous metal etc.)
The defects of, including crackle, stomata, it is loose, be mingled with and other the defects of being opened on surface are detected, surface defect can only be detected, no
Can the depth of display defect, the shape and size inside defect, some solvents and ultraviolet are harmful to body.
The defects of magnaflux detection material ranges are only limitted to surface or the near surface of ferrimagnet.It is generally used for examining
Survey surface and the near surface flaw (such as crackle) of the ferrimagnets such as casting, forging, weld seam and machined part.And magnetic is visited
The method of wound can not find to be detected the internal flaw of workpiece, it is difficult to determine depth of defect.
Structured light vision detection method is vulnerable to uneven secondary reflecting, bright striped Luminance Distribution, smog, splashing and welding
Radiant light etc. influences so that image procossing becomes a problem in weld seam detection.
Acoustic emission testing technology is general very weak, it is necessary to by sensitive electronic instrument ability due to the intensity of acoustic emission signal
Detection.Infrared detection technology mainly measures weldment surface Warm status, it is impossible to the Warm status inside weldment is determined, with other detectors
Device or routine monitoring equipment are compared to expensive.
The embodiment of the present application main purpose is to overcome above-mentioned common detection methods limitation, there is provided a kind of accuracy of detection
High, reliable, easy to use and free of contamination weldment defect detecting system and method, utilize magneto-optic imaging and ultrasound
The more sensing technologies of ripple realize the Non-Destructive Testing of weldment defect, are mutually tied with ultrasonic detection method by magneto-optic imaging detection method
Close, obtain the echo-signal of the magneto optic images and detection ultrasonic wave at weldment position while welding to be detected respectively, and melted by information
Conjunction technology realizes accurately identifying for the classification of position while welding defect and size and position.
To achieve these goals, the embodiment of the present invention adopts the following technical scheme that：Using magneto-optic imaging technique, due to only
There is magnetic direction to try one's best vertical with bead direction, weld defect could be detected to greatest extent.And direct current constant magnetic direction list
One, the direction for the rotating excitation field (resultant field) that crossed yoke is formed is complicated, and the detection of multi-direction weld defect just can be achieved.It is first
Rotating excitation field, which is formed, first with crossed yoke carries out excitation, Ran Houli to the weld seam of the weldment to be detected with high (low) magnetic conductivity
Magneto-optic effect is produced in the presence of the magnetic field so that the linearly polarized light in magneto-optical sensor is passing through sensing with magneto-optical sensor
The different anglecs of rotation is produced during medium, contains the light of the defects of weld seam obtains information after polarization spectroscope reflects by electric charge
Coupled apparatus receives and real time imagery, and the magneto optic images of weld defect are gathered with host computer, and utilizes related image procossing skill
Art, extraction can reflect the characteristic parameter of weld defect magneto-optic imaging changing rule, establish the magneto optic images identification of weld defect
Model.The hurt that some strength formed after weld defect is run into using ultrasonic sensor acquisition detection ultrasonic wave simultaneously is returned
Ripple signal, the signal waveform received is effectively gathered, and the data of collection analyzed with upper computer software
Processing, according to the linear relationship of the straightline propagation of ultrasonic wave, time and sound path, acoustic beam is idealized, changed by simple triangle
Calculate to determine the position of weld defect.
The principle of magneto-optic imaging is as shown in figure 1, the principle signal for the magneto-optic imaging that Fig. 1 provides for the embodiment of the present invention
Figure, based on Faraday magnetooptical effect, as shown in (a) figure in Fig. 1 and (b) figure, only magnetic direction hangs down with bead direction as far as possible
Directly, the distortion that magnetic field occurs is obvious, and caused stray field is larger, and the magneto optic images comprising weld defect information are more clear, detection
The weld defect position arrived is more accurate.And direct current constant magnetic direction is single, it is difficult to meet the multidirectional of weld seam.Therefore,
Rotating excitation field is used in the embodiment of the present invention to realize that magneto-optic is imaged.(a) in figure and (b) figure, dotted line represents in rectangular box
Weld seam, solid line represent magnetic field line.
As shown in Fig. 2 Fig. 2 is a kind of magnetic field line distribution schematic diagram of rotating excitation field provided in an embodiment of the present invention, by two
The rotating excitation field that individual crossed yoke is formed can realize multi-direction excitation, and no matter how changeable the direction of weld seam is, always there is some direction
Resultant field it is vertical with weld seam, it is obtained clearly magneto-optic figure, weld defect extracted by image procossing, realize that curve welds
The defects of seam, is detected.
The ultrasound examination operation principle of application of the embodiment of the present invention is as shown in figure 3, Fig. 3 is provided in an embodiment of the present invention
A kind of ultrasound examination operation principle schematic diagram, the double ultrasonic probes received using a hair one, transmitting probe A is to examined object
C transmitting detection ultrasonic waves, receiving transducer B receive the echo-signal after reflection, have lateral wave 1, defect D in examined object C
Upper end produce diffracted wave 2, defect D lower end produces diffracted wave 3, and examined object C bottom surface produces back wave 4.Using double
Probe one receives the working method of a hair, by the ultrasonic diffraction ripple for receiving and handling defect end.In normal beam testing, typically adopt
With compressional wave, shear wave is typically used when slanting and detecting a flaw.The defects of being detected by supercritical ultrasonics technology appearance of echo-signal judges defect
Presence；Distance of the defect away from test surface can be determined by the position that echo-signal occurs again；Judge to lack by echo amplitude
Sunken equivalent size.
Above is the core concept of the present invention, to enable the above objects, features and advantages of the present invention more obvious easily
Understand, below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely retouched
State, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.Based on the present invention
In embodiment, the every other implementation that those of ordinary skill in the art are obtained under the premise of creative work is not made
Example, belongs to the scope of protection of the invention.
With reference to figure 4, a kind of Fig. 4 positions structural representation of weld defects detection system provided in an embodiment of the present invention, this is lacked
Sunken detecting system includes：Host computer 17；The magneto-optic ultrasonic wave module 16 being connected with the host computer 17；Connect with the host computer 17
The magnetic field generator 13 connect.
Wherein, the magneto-optic ultrasonic wave module 16 and the magnetic field generator 13 are used to be separately positioned on weldment to be detected
15 both sides；The host computer 17 is described for being obtained by the magneto-optic ultrasonic wave module 16 and the magnetic field generator 13
The magneto optic images of weldment 15 to be detected and the echo-signal for detecting ultrasonic wave, judge whether to lack based on the echo-signal
The positions and dimensions of defect are fallen into and determined, the type of defect is determined based on the magneto optic images.
As shown in figure 4, shown weldment defect detecting system also includes：Non-Destructive Testing platform 12, the Non-Destructive Testing platform
12 have the fixture for being used for fixing the weldment to be detected 15.When carrying out defects detection to the weldment 15 to be detected, the magnetic
Field generator 13 is between the weldment 15 to be detected and the Non-Destructive Testing platform 12；The magneto-optic ultrasonic wave module 16
Deviate from a side surface of the magnetic field generator 13 in the weldment 15 to be detected.
The fixture not shown in Fig. 4, the structure of the fixture can according to the structure design of weldment 15 to be detected, so as to
Fixed in carrying out stable position to weldment 15 to be detected, in the embodiment of the present invention, structure to the fixture and described
Particular location on Non-Destructive Testing platform 12 does not limit.In Fig. 4, the dotted line on the surface of weldment 15 to be detected represents position while welding.
As shown in figure 4, shown weldment defect detecting system also includes：Motor 18 and the motor being connected with the motor 18
Switch board 11；The motor controlling cabinet 11 be used for by the motor 18 control the Non-Destructive Testing platform 12 move horizontally with/
Or vertical shift.
The host computer 17 be additionally operable to show the magneto optic images, judged result, the position of defect, defect size and
One in the type of defect or multiple.Specifically, the host computer includes display 19, realized by the display 19
Above-mentioned display function.
In weldment defect detecting system described in the embodiment of the present invention, the magnetic field generator 13 is used for the weldering to be detected
Part 15 carries out rotating excitation field excitation, with to the excitation of weldment 15 to be detected.The magnetic field generator 13 configures voltage and can adjust
AC power, rotating excitation field excitation is carried out to the weldment 15 to be detected to realize.The weldment defect detecting system passes through friendship
Stream power supply 14 provides working power for system.
When carrying out defects detection, the magneto-optic ultrasonic wave module 16 passes to the magneto optic images of the defect of weldment 15 to be detected
The host computer 17, the characteristic parameter of the magneto optic images of defect is extracted by the host computer 17, and utilize what is matched
Algorithm establishes corresponding identification model to the magneto optic images feature of defect, realizes the classification of defect；Then to ultrasound examination
Flaw echoes are analyzed, and can accurately measure defect, and show the positions and dimensions of internal flaw.The present invention is implemented
Example detects weld defect by magneto-optic imaging and the more method for sensing of ultrasonic wave, so as to realize to weld defect classification and position, chi
Very little accurate detection.
In weldment defect detecting system described in the embodiment of the present invention, the magneto-optic ultrasonic wave module 16 is as shown in Figure 5.
With reference to figure 5, Fig. 5 positions a kind of structural representation of magneto-optic ultrasonic wave module provided in an embodiment of the present invention, shown in Fig. 5
Magneto-optic ultrasonic wave module includes：The magneto-optical sensor 21 being connected with the host computer 17, when right by the magnetic field generator 13
During 15 excitation of weldment to be detected, the magneto-optical sensor 21 is used to obtain comprising the weld information of weldment 15 to be detected
The magneto optic images；The ultrasonic sensor 22 being connected with the host computer 17, the ultrasonic sensor 22 are used to pass through ultrasonic wave
Pop one's head in and launch ultrasonic wave, the echo-signal of collection to the weldment 15 to be detected.
Wherein, the host computer 17 is used to establish defect recognition model by Digital Image Processing and pattern-recognition, real
Existing defect classification, for carrying out noise reduction process and data analysis to the echo-signal, determines the positions and dimensions of defect.Institute
It can be miniature Industrial Control Computer to state host computer 17.
As shown in figure 5, the magneto-optic ultrasonic wave module also includes：Housing 27, the housing 27 is interior to be had for installing institute
State the first chamber 28 of ultrasonic sensor 22 and the second chamber 29 for installing the magneto-optical sensor 21；It is arranged on institute
State the ultrasonic sensor connecting plate 23 of the outer surface of housing 27；The magneto-optical sensor power supply being connected with the magneto-optical sensor 21
Line 25 and magneto-optical sensor data wire 26.The magneto-optical sensor 21 and the ultrasonic sensor 22 pass through same housing
27 are packaged, and are easy to the installation of identification and integrate.
The ultrasonic wave connection plate 23 is used to be connected with the ultrasonic sensor 22.The ultrasonic wave connection plate 23 connects
There is Ultrasonic Sensor Data line 24.The ultrasound data lines 24 are used to be connected with the host computer 17.The magneto-optic sensing
Device power line 25 and the magneto-optical sensor data wire 26 draw the shell by being arranged on the through hole on the surface of housing 27
Outside body 27, and it is connected with the host computer 17.
Connected for the ease of circuit system, in weldment defect detecting system described in the embodiment of the present invention, the ultrasonic wave passes
Sensor connecting plate 23, the magneto-optical sensor power line 25 and the magneto-optical sensor data wire 26 are arranged on the housing 27
Same outer surface.
Welding products test system described in the embodiment of the present invention can be used for inside the weld seam of weldment 15 to be detected and sub-surface not
The detection identification of visual defects, and can detect that the information such as classification, size and the position of defect, can be with based on testing result
Evaluate the security and reliability of welded seam area.
When the weld defects detection system carries out defects detection, operation principle is as shown in fig. 6, Fig. 6 positions embodiment of the present invention
The weldment defect detecting system carries out the operation principle schematic diagram of defects detection, including：
A. information gathering：Miniature Industrial Control Computer sends instruction and starts magneto-optical sensor and ultrasonic sensor work,
Synchronous coordination magneto-optical sensor and ultrasonic sensor in detection process, weld defect the magneto optic images are gathered by capture card respectively
With flaw echoes, and will obtain the defects of information transfer into miniature Industrial Control Computer.
B. data processing：Miniature Industrial Control Computer application Multi-information acquisition algorithm returns to weld defect the magneto optic images and defect
Ripple signal is handled, and realizes that weld defect type identification and weld defect position calculate.
C. show：The weld defect magneto-optic figure detected in real time is shown by the liquid crystal display on miniature Industrial Control Computer
The information such as picture, classification, position, size.
The present invention with weld defect (crackle, lack of penetration, incomplete fusion, slag inclusion and stomata) for application, by magneto-optic into
Picture and the real-time the magneto optic images of ultrasonic sensor collection weld defect and flaw echoes, and increased using weld defect image
By force, the technology such as pattern-recognition, Multi-information acquisition and Threshold Filter Algorithms, it is fast using miniature Industrial Control Computer arithmetic speed, can
To realize weld defect classification and the real-time detection of weld defect position, size.Miniature Industrial Control Computer has interface, for
Man-machine device carries out data interaction, in order to carry out data query by man-machine device and automatically control.
When carrying out defects detection to weldment 15 to be detected, magnetic field excitation is used as by the magnetic field generator 13 first and filled
Put to the excitation of weldment to be detected 15 with high or low magnetic conductivity, obtained by magneto-optical sensor 21 and welded comprising weldment 15 to be detected
The magneto optic images of information are stitched, defect recognition model is established using Digital Image Processing and mode identification technology, realize that welding lacks
Classification is fallen into, defect classification includes crackle, lack of penetration, incomplete fusion, slag inclusion and stomata；Pass through the ultrasonic wave of ultrasonic sensor 22
Probe launches detection ultrasonic wave, and the echo-signal obtained, echo-signal is carried out by host computer 17 noise reduction process and
Extraction and analysis, it is possible to which whether have defect, if there is defect if drawing the position while welding of weldment 15 to be detected, it may be determined that lack
Sunken positions and dimensions.
Weldment defect detecting system described in the embodiment of the present invention passes through magneto-optic imaging and ultrasonic wave multisensor weld defect
Lossless detection method, magneto-optical sensor is combined with ultrasonic sensor so that magneto-optical sensor accurately divides weld defect
Dominant Facies of the advantage and ultrasonic sensor of class on detection weld defect position combine, and two kinds of sensors of fusion are in lossless inspection
The advantages of in terms of survey, complete to weld defect classification and position, the accurate detection of size.In combination with Non-Destructive Testing platform, fortune
Gather welding the magneto optic images and flaw echoes respectively with dual sensor, then utilize computer stored, image procossing and threshold
It is worth Denoising Algorithm, analysis and extraction weld defect information, so as to realize the accurate detection of defect.
Weldment defect detecting system described in the embodiment of the present invention uses magneto-optic sensing technology, in the detection process of weld defect
In, the weldment excitation with high (low) magnetic conductivity is given using rotating excitation field exciting bank, while obtained and included by magneto-optical sensor
Weld defect magneto-optic figure, realize that weld defect image recognition and weld defect are classified by host computer.With ray detection method phase
Than not only accuracy of detection is high and safe and reliable to operation, easy to use, pollution-free for technical scheme described in the embodiment of the present application.By
In the flexible cooperation of magneto-optic, ultrasonic sensor and host computer so that host computer can obtain the welding of detected position in real time
Defect situation, so as to realize to defect classification and position, the accurate detection of size.Compared with Liquid penetrant testing method, this method imaging
Intuitively, automaticity is high, and detection speed is fast, and welding internal flaw positions and dimensions accurately can be detected.Rotating excitation field swashs
Encourage down, it is possible to achieve there is the detection of multidirectional weld defect, can also realize to crackle of weld seam inner transverse distribution etc.
The defects of pair cross-section area effect is little is accurately detected.
Based on above-described embodiment, another embodiment of the present invention additionally provides a kind of weldment defect inspection method, and this method is used
In above-mentioned weldment defect detecting system, the weldment defect inspection method is as shown in fig. 7, Fig. 7 is provided in an embodiment of the present invention
A kind of schematic flow sheet of weldment defect inspection method, the weldment defect inspection method include：
Step S11：Obtain the magneto optic images of weldment to be detected and obtain the echo-signal of ultrasound examination ultrasonic wave.
Optionally, in the step, the magneto optic images for obtaining weldment to be detected include：The weldment to be detected is carried out
Rotating excitation field encourages, to the weldment excitation to be detected, to obtain the magneto optic images for including the weldment weld information to be detected.
Step S12：Defect is judged whether based on the echo-signal and determines the positions and dimensions of defect, is based on
The magneto optic images determine the type of defect.
Weldment defect inspection method described in the embodiment of the present invention is used for above-mentioned weldment defect detecting system, can be by above-mentioned
Weldment defect detecting system realizes the weldment defect inspection method.Equally, the weldment defect inspection method is in weld defect
In detection process, the weldment excitation with high (low) magnetic conductivity is given using rotating excitation field exciting bank, while by magneto-optical sensor
Acquisition includes weld defect magneto-optic figure, realizes that weld defect image recognition and weld defect are classified by host computer.With ray
Detection method is compared, and not only accuracy of detection is high for technical scheme described in the embodiment of the present application, and safe and reliable to operation, easy to use,
It is pollution-free.Due to the flexible cooperation of magneto-optic, ultrasonic sensor and host computer so that host computer can obtain tested location in real time
The weld defect situation put, so as to realize to defect classification and position, the accurate detection of size., should compared with Liquid penetrant testing method
Method imaging is directly perceived, and automaticity is high, and detection speed is fast, and welding internal flaw positions and dimensions accurately can be detected.Rotation
Turn under magnetic field excitation, it is possible to achieve there is the detection of multidirectional weld defect, can also realize and weld seam inner transverse is distributed
The pair cross-section area effect such as crackle it is little the defects of accurately detected.
Each embodiment is described by the way of progressive in this specification, what each embodiment stressed be and other
The difference of embodiment, between each embodiment identical similar portion mutually referring to.For weldment disclosed in embodiment
For defect inspection method, due to its with embodiment disclosed in weldment defect detecting system it is corresponding, so the comparison of description is simple
Single, related part is referring to method part illustration.
The foregoing description of the disclosed embodiments, professional and technical personnel in the field are enable to realize or using the present invention.
A variety of modifications to these embodiments will be apparent for those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, it is of the invention
The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one
The most wide scope caused.
Claims (10)
1. a kind of weldment defect detecting system, it is characterised in that the weldment defect detecting system includes：
Host computer；
The magneto-optic ultrasonic wave module being connected with the host computer；
The magnetic field generator being connected with the host computer；
Wherein, the magneto-optic ultrasonic wave module and the magnetic field generator are used for the both sides for being separately positioned on weldment to be detected；
The host computer is used for the magnetic that the weldment to be detected is obtained by the magneto-optic ultrasonic wave module and the magnetic field generator
Light image and the echo-signal for detecting ultrasonic wave, defect is judged whether based on the echo-signal and determines defect
Positions and dimensions, the type of defect is determined based on the magneto optic images.
2. weldment defect detecting system according to claim 1, it is characterised in that the magneto-optic ultrasonic wave module includes：
The magneto-optical sensor being connected with the host computer, when by the magnetic field generator to the weldment excitation to be detected,
The magneto-optical sensor is used to obtain the magneto optic images for including the weldment weld information to be detected；
The ultrasonic sensor being connected with the host computer, the ultrasonic sensor are used to treat to described by ultrasonic probe
Detect weldment transmitting detection ultrasonic wave, the echo-signal of acquisition testing ultrasonic wave；
Wherein, the host computer is used to establish defect recognition model by Digital Image Processing and pattern-recognition, realizes defect
Classification, for carrying out noise reduction process and data analysis to the echo-signal, determine the positions and dimensions of defect.
3. weldment defect detecting system according to claim 2, it is characterised in that the magneto-optic ultrasonic wave module is also wrapped
Include：
Housing, the housing is interior to be had for installing the first chamber of the ultrasonic sensor and for installing the magneto-optic
The second chamber of sensor；
The ultrasonic sensor connecting plate of the outer surface of the housing is arranged on, the ultrasonic wave connection plate is used for and the ultrasound
Wave sensor connects；The ultrasonic wave connection plate is connected with Ultrasonic Sensor Data line；The ultrasound data lines be used for
The host computer connection；
The magneto-optical sensor power line and magneto-optical sensor data wire being connected with the magneto-optical sensor；The magneto-optical sensor
Power line and the magneto-optical sensor data wire draw the hull outside by being arranged on the through hole of the surface of shell, and
It is connected with the host computer.
4. weldment defect detecting system according to claim 3, it is characterised in that the ultrasonic sensor connecting plate,
The magneto-optical sensor power line and the magneto-optical sensor data wire are arranged on the same outer surface of the housing.
5. weldment defect detecting system according to claim 1, it is characterised in that also include：Non-Destructive Testing platform, it is described
Non-Destructive Testing platform has the fixture for being used for fixing the weldment to be detected；
When carrying out defects detection to the weldment to be detected, the magnetic field generator be located at the weldment to be detected with it is described lossless
Between detection platform；The magneto-optic ultrasonic wave module is located at the side table that the weldment to be detected deviates from the magnetic field generator
Face.
6. weldment defect detecting system according to claim 1, it is characterised in that also include：Motor and with the electricity
The motor controlling cabinet of machine connection；The motor controlling cabinet is used to move by Non-Destructive Testing plateau levels described in the motor control
And/or vertical shift.
7. weldment defect detecting system according to claim 1, it is characterised in that the host computer is additionally operable to described in display
The magneto optic images, judged result, the position of defect, the size of defect and defect type in one or it is multiple.
8. weldment defect detecting system according to claim 1, it is characterised in that the magnetic field generator is used for described
Weldment to be detected carries out rotating excitation field excitation, with to the weldment excitation to be detected.
9. a kind of weldment defect inspection method, for the weldment defect detecting system as described in claim any one of 1-8, it is special
Sign is that the weldment defect inspection method includes：
Obtain the magneto optic images of weldment to be detected and obtain the echo-signal of ultrasound examination ultrasonic wave；
Defect is judged whether based on the echo-signal and determines the positions and dimensions of defect, based on the magneto optic images
Determine the type of defect.
10. weldment defect inspection method according to claim 9, it is characterised in that the magnetic for obtaining weldment to be detected
Light image includes：
Rotating excitation field excitation is carried out to the weldment to be detected, to the weldment excitation to be detected, to obtain comprising described to be checked
Survey the magneto optic images of weldment weld information.
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Application publication date: 20171110 |