CN107817296A - A kind of ring automation multifrequency array ultrasonic the cannot-harm-detection device and method - Google Patents
A kind of ring automation multifrequency array ultrasonic the cannot-harm-detection device and method Download PDFInfo
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- CN107817296A CN107817296A CN201711004023.XA CN201711004023A CN107817296A CN 107817296 A CN107817296 A CN 107817296A CN 201711004023 A CN201711004023 A CN 201711004023A CN 107817296 A CN107817296 A CN 107817296A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/04—Analysing solids
- G01N29/06—Visualisation of the interior, e.g. acoustic microscopy
- G01N29/0654—Imaging
- G01N29/069—Defect imaging, localisation and sizing using, e.g. time of flight diffraction [TOFD], synthetic aperture focusing technique [SAFT], Amplituden-Laufzeit-Ortskurven [ALOK] technique
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
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Abstract
The invention discloses a kind of ring automation multifrequency array ultrasonic the cannot-harm-detection device and method, end face multi frequency probe array, channel ultrasonic detector, industrial computer and switch board that the device moves radially including collecting tank, revolution detection platform, the periphery multi frequency probe array of edge revolution detection platform axial movement, edge revolution detection platform；The periphery multi frequency probe array includes the different probe of multiple row frequency, and the defects of for detecting ring radially different depth, the end face multi frequency probe array includes the different probe of multiple row frequency, the defects of for detecting ring axially distinct depth.The present invention realizes the AUTOMATIC ZONING detection of ring internal flaw using multifrequency array probe, has the advantages that efficiency high, simple to operate, check frequency is small, accuracy of detection is high, strong adaptability.
Description
Technical field
The invention belongs to Ultrasonic Nondestructive technical field, and in particular to a kind of ring automation multifrequency array ultrasonic without
Detection means and method are damaged, it is popped one's head in from different frequency and detects the defects of ring different depth respectively, suitable for different chis
The quantitative detection of very little ring internal flaw.
Background technology
Ring product is in industries such as wind-power electricity generation, power transmission, ship equipment, engineering machinery, light industry and machinery, metallurgical machineries
Be used widely, had in military service braking frequently, repeat, shock loading is big, is subjected to the work characteristics such as alternate stress effect,
Require high intensity, high tenacity and good anti-fatigue performance.Ring rolling is the head for producing high-performance ring shaped forging at present
Technology is selected, still, the defects of producing all kinds in the operation of rolling, inside ring, most common of which is hole
Defect.When the size of hole defect is exceeded, the performance of ring it is hidden will to be left huge safety by large effect
Suffer from.
At present, ultrasonic examination is the detection most common method of ring internal flaw, is sentenced according to obtained result of detection
Fixed output quota product it is whether qualified.Ring manufactory typically uses artificial detection method, testing staff when detecting ring internal flaw
Hand-held normal probe, angle probe or double crystal probe are directly contacted by couplant with ring end face or periphery.But the problem of existing
It is the operating experience of the easily examined personnel of testing result of the method and the influence of degree of fatigue, and detection efficiency is low, leakage
Inspection rate is high, check frequency is big, is difficult to defect quantitativeization detection, how to improve accuracy of detection and detection efficiency, reduces detection
Blind area, while realize that the quantitative detection of ring internal flaw automation is the key that the present invention studies.
The content of the invention
It is an object of the invention to provide a kind of ring automation multifrequency array ultrasonic the cannot-harm-detection device and method, its profit
The automatic detection of ring internal flaw is realized with multifrequency array probe, there is efficiency high, simple to operate, check frequency is small, detection
The advantages that precision is high, strong adaptability.
The technical solution adopted for the present invention to solve the technical problems is：
A kind of ring automates multifrequency array ultrasonic the cannot-harm-detection device, including the collecting tank equipped with couplant, is arranged on
R axles servomotor that revolution detection platform in the collecting tank, the driving revolution detection platform rotate around its own axis,
Axial linear module, the driving axial linear module edge are turned round the axial servomotor of detection platform axial movement, are arranged on
The linear module edge of the linear module of periphery multi frequency probe array, radial direction on the axial linear module, the driving radial direction is returned
Turn radial servo motor, the end face multi frequency probe array on the linear module of the radial direction that detection platform moves radially,
The channel ultrasonic detector being connected with the periphery multi frequency probe array and end face multi frequency probe array and the multichannel
The industrial computer of ultrasound measuring instrument connection and the switch board being connected with the industrial computer；The switch board is electric with R axles servo respectively
Machine, axial servomotor and radial servo motor connection, the periphery multi frequency probe array include the different spy of multiple row frequency
Head, the defects of for detecting ring radially different depth, the end face multi frequency probe array includes the different probe of multiple row frequency,
The defects of for detecting ring axially distinct depth.
By above-mentioned technical proposal, periphery probe gripper is installed on the axial linear module, for adjusting periphery
The angle of multi frequency probe array makes its wafer plane parallel with ring periphery and axially arranged along ring.
By above-mentioned technical proposal, end face probe gripper is installed on the linear module of radial direction, for adjusting end face multifrequency
The angle of linear transducer array makes its wafer plane parallel with ring end face, and is radially arranged along ring.
By above-mentioned technical proposal, the detection range of variant frequency probe is continuous in the periphery multi frequency probe array,
And the consistency of thickness of maximum detection depth and ring；The detection range of variant frequency probe in the end face multi frequency probe array
Continuously, and maximum detection depth and ring it is highly consistent.
By above-mentioned technical proposal, the periphery multi frequency probe array and end face multi frequency probe array include a row high frequency
Probe and a row low-frequency probe, the frequency of the high frequency probe be 5MHz~10MHz, the frequency of the low-frequency probe be 2MHz~
3MHz。
By above-mentioned technical proposal, the device also includes noise filter, and the noise filter is arranged on switch board and institute
Have between servomotor.
By above-mentioned technical proposal, the device, which also includes the device, also includes x-axis module, y-axis module, z-axis line
Property module, x-axis servomotor and y-axis servomotor, the axial linear module and radially linear module is installed in z-axis line
On module, the x-axis servomotor and y-axis servomotor are connected with switch board respectively, and the x-axis servomotor is used to drive y
Axis module laterally moves on x-axis module, and the y-axis servomotor is used to drive z-axis line module in y-axis
Property module on vertically move, the horizontal and vertical plane for being mutually perpendicular to and forming and turn round detection platform axis hang down
Directly.
Accordingly, the present invention also provides a kind of ring automation multifrequency array ultrasonic Non-Destructive Testing side based on said apparatus
Method, comprise the following steps：
S1, by ring it is coaxial be fixedly installed on revolution detection platform on, periphery multi frequency probe array and end face multifrequency
The initial position of linear transducer array is respectively positioned on ring periphery top edges, the wafer plane and ring of periphery multi frequency probe array
Periphery is parallel and axially arranged along ring, and it is provided with certain lift-off distance, end face multi frequency probe battle array between ring periphery
The wafer plane of row is parallel with ring end face and is radially arranged along ring, and it is provided with certain lift-off distance between ring end face,
Couplant is injected into collecting tank until liquid level floods all probes；
S2, start channel ultrasonic detector, all probes start to detect, R axles servomotor driving revolution detection platform
Uniform rotation, and then drive ring at the uniform velocity to be rotated around its own axis, ring rotates one week and returns to all spies while initial point
Head completes the detection enclosed to ring one, and in detection process, the ultrasonic signal detected is sent to multichannel by all probes
The ultrasonic signal received is converted to ultrasound and sweeps oscillogram and be transferred to industry control by ultrasound measuring instrument, channel ultrasonic detector
Machine is handled；
S3, by the driving of radial servo motor, radially linear module drives end face multi frequency probe array along revolution detection platform
Distance, delta y is moved radially, moving direction points to ring endoporus, and Δ y=(1-S) md, m are end face multi frequency probe array each column
The quantity of middle probe, S are the repetition coverage rate of probe, and d is the wafer diameter of probe, while passes through axial servomotor drive shaft
Periphery multi frequency probe array is driven to point to ring along revolution detection platform axial movement distance, delta z, moving direction to linear module
Part bottom, Δ z=(1-S) nd, n are the quantity popped one's head in periphery multi frequency probe array each column, repeat step S2, until
End face multi frequency probe array is moved to ring inner port edge and untill periphery multi frequency probe array is moved to ring bottom, i.e., complete
Into the ultrasonic signal acquisition and record of ring.
By above-mentioned technical proposal, in step S1, between periphery multi frequency probe array and ring periphery, end face multifrequency visits
Lift-off distance between head array and ring end face is xd, xd>=3N, N are near-zone length.
By above-mentioned technical proposal, in step S2, the angular velocity of rotation for turning round detection platform is 0.2~1rad/s.
The present invention, have the advantages that：1st, the present invention use multifrequency array probe, can according to ring size and meanwhile from
The defects of end face and periphery layered weighting different depth, accuracy of detection is high, and Scanning speed is fast, and check frequency is small；2nd, it is of the invention
Realize that whole-course automation detects by control circuit, it is simple to operate, avoid influence of the human error to testing result；3rd, this hair
Bright to use complete immersion method, more preferable compared to contact method coupling effect, ring surface quality does not interfere with coupling effect, visits
Head and the water layer on tested ring surface can eliminate influence of the near field region to testing result；4th, in detection process, probe need not
Directly contacted with tested ring, extend probe service life.The present invention can meet the institute of different size ring automatic detections
Require.
Brief description of the drawings
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing：
Fig. 1 is the structural representation of ring automation multifrequency array ultrasonic the cannot-harm-detection device in the present invention；
Fig. 2 is the displacement diagram of multi frequency probe array in end face in the present invention；
Fig. 3 is the ultrasonic scan principle schematic of multi frequency probe array in end face in the present invention；
Fig. 4 is the displacement diagram of periphery multi frequency probe array in the present invention；
Fig. 5 is the ultrasonic scan principle schematic of periphery multi frequency probe array in the present invention.
In figure：1- frames, 2-y axis module, 3-z axis module, 4-x axis module, 5-x axles servomotor,
6- noise filters, 7- switch boards, 8- industrial computers, 9- channel ultrasonics detector, 10- end faces multi frequency probe array, 11- are cylindrical
Face multi frequency probe array, 12- rings, 13-R axles servomotor, 14- revolution detection platform, 15- scroll chucks, 16- collecting tanks,
17- radial directions linear module, the axial linear modules of 18-, 19- end faces probe gripper, 20- periphery probe grippers.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that specific embodiment described herein is only to explain the present invention, not
For limiting the present invention.
In the preferred embodiment, as shown in figure 1, a kind of ring automation multifrequency array ultrasonic Non-Destructive Testing dress
Put, including the collecting tank 16 equipped with couplant (couplant selects water in the present embodiment), be arranged in collecting tank 16 revolution inspection
Survey platform 14, the R axles servomotor 13 that driving revolution detection platform 14 rotates around its own axis, axial linear module 18, drive
Move axial linear module 18 along revolution detection platform 14 move axially axial servomotor, on axial linear module 18
Periphery multi frequency probe array 11, radially linear module 17, driving radially linear module 17 along revolution detection platform 14 radially
Mobile radial servo motor, the end face multi frequency probe array 10 on the linear module 17 of radial direction and periphery multifrequency is visited
Channel ultrasonic detector 9 that head array 11 and end face multi frequency probe array 10 connect, it is connected with channel ultrasonic detector 9
Industrial computer 8 and the switch board 7 being connected with industrial computer 8；Switch board 7 respectively with R axles servomotor 13, axial servomotor and footpath
Connected to servomotor, periphery multi frequency probe array 11 includes the different probe of multiple row frequency, for detecting ring 12 radially
The defects of different depth, end face multi frequency probe array 10 include the different probe of multiple row frequency, for detecting ring 12 axially not
The defects of with depth, in the present embodiment, probe uses ultrasonic normal probe.
In a preferred embodiment of the invention, as shown in Figure 1, Figure 4, Figure 5, periphery is installed on axial linear module 18
Probe gripper 20, the angle for adjusting periphery multi frequency probe array 11 make its wafer plane parallel with the periphery of ring 12,
It is and axially arranged along ring 12.
In a preferred embodiment of the invention, as shown in Figure 1, Figure 2, Figure 3 shows, end face spy is radially installed on linear module 17
Fixture head 19, the angle for adjusting end face multi frequency probe array 10 make its wafer plane parallel with the end face of ring 12, and along ring
Part 12 is radially arranged.
In a preferred embodiment of the invention, as shown in figure 5, variant frequency probe in periphery multi frequency probe array
Detection range is continuous, and the consistency of thickness of maximum detection depth and ring；As shown in figure 3, in the multi frequency probe array of end face respectively not
The detection range of same frequency probe is continuous, and maximum detection depth and ring is highly consistent.
In a preferred embodiment of the invention, as shown in Figure 2, Figure 4 shows, periphery multi frequency probe array and end face multi frequency probe
Array includes a row high frequency probe and a row low-frequency probe, and the frequency of high frequency probe is 5MHz~10MHz, the frequency of low-frequency probe
Rate is 2MHz~3MHz, and each column includes the probe of multiple same frequencys, and each column includes four probes in the present embodiment.Different frequency
Pop one's head in the defects of being used to detect ring different depth, the probe of multiple same frequencies is set in each column, for improving detection efficiency.
In a preferred embodiment of the invention, as shown in figure 1, the device also includes noise filter 6, noise filter 6
It is arranged between switch board 7 and all servomotors, for eliminating noise caused by servomotor to ultrasound examination result
Influence.
In a preferred embodiment of the invention, as shown in figure 1, the device, which also includes the device, also includes x-axis module
4th, y-axis module 2, z-axis line module 3, x-axis servomotor 5 and y-axis servomotor, the axial linear module 18 and footpath
Be installed in linear module 17 on z-axis line module 3, the x-axis servomotor 5 and y-axis servomotor respectively with switch board 7
Connection, the x-axis servomotor 5 are used to drive y-axis module 2 to laterally move on x-axis module 4, and the y-axis is watched
Take motor be used for drive z-axis line module 3 to be vertically moved on y-axis module 2, it is described it is horizontal and vertical be mutually perpendicular to and
The plane of composition is vertical with the axis for turning round detection platform 14.
Accordingly, the present invention also provides a kind of ring 12 based on said apparatus and automates multifrequency array ultrasonic Non-Destructive Testing
Method, comprise the following steps：
S1, by ring 12 it is coaxial be fixedly installed on revolution detection platform 14 on, periphery multi frequency probe array 11 and end
The initial position of face multi frequency probe array 10 is respectively positioned on the periphery top edges of ring 12, the crystalline substance of periphery multi frequency probe array 11
Plate plane is parallel with the periphery of ring 12 and axially arranged along ring 12, its between the periphery of ring 12 be provided with certain lift-off away from
From the wafer plane of end face multi frequency probe array 10 is parallel with the end face of ring 12 and is radially arranged along ring 12, itself and ring 12
Certain lift-off distance is provided between end face, injects couplant into collecting tank 16 until liquid level floods all probes；
S2, start channel ultrasonic detector 9, all probes start to detect, and the driving revolution detection of R axles servomotor 13 is flat
The uniform rotation of platform 14, and then drive ring 12 at the uniform velocity to be rotated around its own axis, ring 12 rotates one week and returns to the same of initial point
Shi Suoyou probes complete the detection enclosed to ring 12 1, and in detection process, all probes send out the ultrasonic signal detected
Channel ultrasonic detector 9 is given, 9 ultrasonic signals received of channel ultrasonic detector are converted to ultrasound and sweep oscillogram
And be transferred to industrial computer 8 and handled, data are transmitted by EPA between channel ultrasonic detector and industrial computer；
S3, by the driving of radial servo motor, radially linear module drives end face multi frequency probe array along revolution detection platform
Distance, delta y is moved radially, moving direction points to ring endoporus, and Δ y=(1-S) md, m are end face multi frequency probe array each column
The quantity of middle probe, S are the repetition coverage rate of probe, and d is the wafer diameter of probe, while passes through axial servomotor drive shaft
Periphery multi frequency probe array is driven to point to ring along revolution detection platform axial movement distance, delta z, moving direction to linear module
Part bottom, Δ z=(1-S) nd, n are the quantity popped one's head in periphery multi frequency probe array each column, repeat step S2, until
End face multi frequency probe array is moved to ring inner port edge and untill periphery multi frequency probe array is moved to ring bottom, i.e., complete
Into the ultrasonic signal acquisition and record of ring.
In a preferred embodiment of the invention, as shown in figure 1, in step S1, periphery multi frequency probe array 11 and ring
Lift-off distance between 12 peripheries, between end face multi frequency probe array 10 and the end face of ring 12 is xd, xd>=3N, N are near field
Section length.
In a preferred embodiment of the invention, as shown in figure 1, in step S2, the angular velocity of rotation of detection platform 14 is turned round
For 0.2~1rad/s.
The probe used in the present invention is conventional Ultrasound normal probe, thick to ring using the ultrasonic normal probe of different frequency
Accuracy of detection can be greatly improved by carrying out layered weighting simultaneously on degree direction and short transverse.High frequency probe check frequency is small, and
Detection sensitivity is high, but is as the increase of detection depth, the sound energy attenuation of high frequency probe are visited compared to low frequency the problem of exist
Head exponentially increases again, and when when test position is deeper the defects of, the energy of flaw echo can strongly reduce, may be with clutter
Mutually obscure, be unfavorable for system discovery defect, when especially detecting large ring, therefore carry out test position from a low-frequency probe
The defects of deeper；Furthermore if from the probe of single frequency, as the increase of detection depth, the amplitude of flaw echo are same
Sample, which has, to be obviously reduced, when detecting depth more than a certain value (i.e. ring thickness or height exceedes a certain value), flaw echo
Amplitude can not equally meet detection signal-to-noise ratio, therefore the layered weighting of multi frequency probe can not only improve accuracy of detection, moreover it is possible to suitable
Answer the ring of various sizes；Moreover, it layered weighting carried out to ring different depth can reduce pair from the probe of different frequency
The gain (dB numbers) in region is answered to adjust, can equally reduce blind area, error and inspection software writes difficulty.For big type ring
Part, it may be necessary to the probe of 3~4 groups of different frequencies.
When mounted, as shown in figure 1, the detection means possesses five frees degree, revolution detection platform is positioned at receipts by the present invention
Collect above groove, detected ring is located at turn around on the upper surface of detection platform, fixed by scroll chuck 15；Each probe gripper
Probe is moved freely using the mobile unit of linear module (x, y, z axle) on three directions of x, y, z axle corresponding to clamping, simultaneously
Probe and can realized to different sizes, the Inner Defect Testing of different shape ring by rotating to adjust head angle, linearly
Module is arranged in frame 1；Noise filter is connected by cable with each servomotor and switch board.
The present invention comprises the following steps when detecting ring：
1st, apparatus for initializing：Device and ring to be measured are carried out by matching positioning by linear adjustment module, probe it is initial
Position at periphery edge, then adjusts head angle by probe gripper, ensures that the end face multifrequency of detection ring end face is visited
The wafer plane of head array is parallel with the end face of ring to be measured, detects the periphery multi frequency probe array face ring of ring periphery
The center of part, into collecting tank, water filling is after liquid level floods entirely probe, stopping water filling；
The 2nd, detection parameters are set：Start channel ultrasonic detector, input detection parameters in a device, as outside ring to be measured
Footpath D, wall thickness δ, height h, acoustic velocity of material c, the angular velocity of rotation w etc. for turning round detection platform；
3rd, gather and record detection signal：
3.1st, revolution detection platform and ring is driven to be rotated one week with angular speed w uniform rotation by R axles servomotor
Afterwards, probe also completes the scanning enclosed to ring one while ring returns to initial point；
3.2nd, in detection process, the ultrasonic signal detected is sent to channel ultrasonic and detected by multifrequency array probe
The ultrasonic signal received is converted to ultrasonic A and sweeps oscillogram by instrument, channel ultrasonic detector, and ultrasonic wave A sweeps oscillogram master
Want display interface ripple (signal that the beginning ripple of ultrasonic wave transmitting reflects in water and ring contact surface) and once bottom ripple (ultrasonic wave
In the signal that ring bottom reflection is returned) and the reflection of ring internal flaw echo-signal, abscissa represents depth of defect, indulges
Coordinate represents echo-signal amplitude, and when probe detects internal flaw, boundary wave is obvious with that can be produced among once bottom ripple
The ultrasonic A of all detections is swept oscillogram by network interface and is transferred to industry control by flaw echoes, last channel ultrasonic detector
Machine, industrial computer sweep oscillogram using the software processing ultrasound A write；
3.3rd, by radial servo motor control, radially linear module Driving plane multi frequency probe array radially moves along ring
Dynamic distance, delta y, moving direction points to ring endoporus, Δ y=(1-S%) md, while passes through axial Serve Motor Control axle
Periphery multi frequency probe array is driven to point to ring bottom along ring short transverse displacement Δ z, moving direction to linear module
Portion, Δ z=(1-S%) nd, 3.1~step 3.2 of repeat step, until end face, probe is moved to ring inner port edge and outer
Untill disc probe is moved to ring bottom；
3.4th, industrial computer sweeps oscillogram using the software processing ultrasound A that writes, and the ultrasonic B for obtaining ring is swept, C sweeps figure
Picture, and size and location information the defects of inside ring is determined, detect a ring and take t=(2 π/w) × ([δ/Δ y]+1)；
3.5th, the ring detected is taken out, carries out next ring detection, 3.1~step 3.4 of repeat step, if adjustment
After complete probe positions, probe is still completely submerged, then need not water filling again, if next ring size and having detected ring
Size is consistent, then need not reset detection parameters；
4th, testing result is preserved：Ring multifrequency array ultrasonic Non-Destructive Testing result is stored in industrial computer, is shown as super
Sound ultrasound B sweeps the form that image is swept with C, the positions and dimensions information of attendant disadvantages, and the ultrasonic A that can obtain each defect sweeps ripple
Shape figure.
The present invention carries out automation multifrequency in the ring to external diameter D=1000mm, wall thickness δ=300mm, height h=300mm
When array ultrasonic detects, the frequency f of high frequency probe1=5MHz, the defects of for detecting 0~120mm of depth, the frequency of low-frequency probe
Rate f2=2.25MHz, the defects of for detecting 120~300mm of depth, the wafer diameter d=20mm of probe, the repetition of probe is covered
Lid rate S is 15%, and end face and the quantity of periphery high frequency probe and low-frequency probe are 4, are installed by Fig. 1 annexation
The device.
Detecting step includes：
1st, apparatus for initializing：Device and ring to be measured are carried out by matching positioning by linear adjustment module, probe it is initial
Position at periphery edge, then adjusts head angle by probe gripper, ensures that the multifrequency array of detection ring end face is visited
The wafer plane of head is parallel with the end face of ring to be measured, detects the center of the probe face ring of ring periphery, and probe carries
From height xd=100mm, into coupling water collecting groove, water filling is after liquid level floods entirely probe, stopping water filling；
The 2nd, detection parameters are set：Start channel ultrasonic detector, input detection parameters in a device, as outside ring to be measured
Footpath D=1000mm, wall thickness δ=300mm, height h=300mm, acoustic velocity of material c=5200m/s, the anglec of rotation for turning round detection platform
Speed w=0.6rad/s etc.；
3rd, gather and record detection signal：
3.1st, revolution detection platform and ring are driven with angular speed w=0.6rad/s uniform rotation by R axles servomotor,
After rotating one week, probe also completes the scanning enclosed to ring one while ring returns to initial point；
3.2nd, in detection process, the ultrasonic signal detected is sent to channel ultrasonic and detected by multifrequency array probe
The ultrasonic signal received is converted to ultrasonic A and sweeps oscillogram by instrument, channel ultrasonic detector, and ultrasonic wave A sweeps oscillogram master
Want display interface ripple (signal that the beginning ripple of ultrasonic wave transmitting reflects in water and ring contact surface) and once bottom ripple (ultrasonic wave
In the signal that ring bottom reflection is returned) and the reflection of ring internal flaw echo-signal, abscissa represents depth of defect, indulges
Coordinate represents echo-signal amplitude, and when probe detects internal flaw, boundary wave is obvious with that can be produced among once bottom ripple
The ultrasonic A of all detections is swept oscillogram by network interface and is transferred to industry control by flaw echoes, last channel ultrasonic detector
Machine, industrial computer is by the ultrasonic reflections oscillogram received and standard DGS curve comparisons, if flaw echo amplitude is bent more than DGS
Line, then description defect size be above standard value, now industrial computer obtains defect using the software processing figure write
Size and location information simultaneously preserves, and finally, industrial computer is swept oscillogram to the ultrasonic A of preservation and handled；
3.3rd, distance, delta y, Δ y are moved radially along ring by the linear module Driving plane probe of radial servo motor control
=68mm, moving direction points to ring endoporus, while drives periphery probe edge by the linear module of axial Serve Motor Control
Ring short transverse displacement Δ z, Δ z=68mm, moving direction point to ring bottom, 3.1~step 3.2 of repeat step,
Until end face, probe is moved to ring inner port edge and periphery is popped one's head in untill being moved to ring bottom；
3.4th, industrial computer sweeps oscillogram using the software processing ultrasound A that writes, and the ultrasonic B for obtaining ring is swept, C sweeps figure
Picture, and size and location information the defects of inside ring is determined, detect a ring and take t=53s, less than 1 minute；
3.5th, the ring detected is taken out, carries out next ring detection, 3.1~step 3.4 of repeat step, if adjustment
After complete probe positions, probe is still completely submerged, then need not water filling again, if next ring size and having detected ring
Size is consistent, then need not reset detection parameters；
4th, testing result is preserved：Ring multifrequency array ultrasonic Non-Destructive Testing result is stored in industrial computer, is shown as super
Sound ultrasound B sweeps the form that image is swept with C, the positions and dimensions information of attendant disadvantages, and the ultrasonic A that can obtain each defect sweeps ripple
Shape figure.
It should be appreciated that for those of ordinary skills, can according to the above description be improved or converted,
And all these modifications and variations should all belong to the protection domain of appended claims of the present invention.
Claims (10)
1. a kind of ring automates multifrequency array ultrasonic the cannot-harm-detection device, it is characterised in that including the collection equipped with couplant
The R axles that groove, the revolution detection platform being arranged in the collecting tank, the driving revolution detection platform rotate around its own axis
The axial servo electricity of servomotor, axial linear module, the driving axial linear module along revolution detection platform axial movement
Machine, the periphery multi frequency probe array on the axial linear module, radially linear module, the driving radial direction are linear
The radial servo motor that module moves radially along revolution detection platform, the end face multifrequency on the linear module of the radial direction are visited
Head array, the channel ultrasonic detector being connected with the periphery multi frequency probe array and end face multi frequency probe array and institute
The switch board stated the industrial computer of channel ultrasonic detector connection and be connected with the industrial computer；The switch board respectively with R
Axle servomotor, axial servomotor and radial servo motor connection, the periphery multi frequency probe array include multiple row frequency
Different probes, the defects of for detecting ring radially different depth, the end face multi frequency probe array includes multiple row frequency not
With probe, the defects of for detecting ring axially distinct depth.
2. ring according to claim 1 automates multifrequency array ultrasonic the cannot-harm-detection device, it is characterised in that the axle
Periphery probe gripper is installed on to linear module, the angle for adjusting periphery multi frequency probe array makes its wafer plane
It is parallel with ring periphery and axially arranged along ring.
3. ring according to claim 1 automates multifrequency array ultrasonic the cannot-harm-detection device, it is characterised in that the footpath
End face probe gripper is installed on to linear module, the angle for adjusting end face multi frequency probe array makes its wafer plane and ring
Part end face is parallel, and is radially arranged along ring.
4. ring according to claim 1 automates multifrequency array ultrasonic the cannot-harm-detection device, it is characterised in that described outer
The detection range of variant frequency probe is continuous in disc multi frequency probe array, and the thickness one of maximum detection depth and ring
Cause；The detection range of variant frequency probe is continuous in the end face multi frequency probe array, and maximum detection depth and ring
It is highly consistent.
5. ring according to claim 1 automates multifrequency array ultrasonic the cannot-harm-detection device, it is characterised in that described outer
Disc multi frequency probe array and end face multi frequency probe array include a row high frequency probe and a row low-frequency probe, and the high frequency is visited
The frequency of head is 5MHz~10MHz, and the frequency of the low-frequency probe is 2MHz~3MHz.
6. ring according to claim 1 automates multifrequency array ultrasonic the cannot-harm-detection device, it is characterised in that the device
Also include noise filter, the noise filter is arranged between switch board and all servomotors.
7. ring according to claim 1 automates multifrequency array ultrasonic the cannot-harm-detection device, it is characterised in that the device
Also including the device also includes x-axis module, y-axis module, z-axis line module, x-axis servomotor and y-axis servo electricity
Machine, the axial linear module and the linear module of radial direction are installed on z-axis line module, and the x-axis servomotor and y-axis are watched
Take motor to be connected with switch board respectively, the x-axis servomotor is used to drive y-axis module to do horizontal stroke on x-axis module
To movement, the y-axis servomotor be used for drive z-axis line module to be vertically moved on y-axis module, the transverse direction and
The plane that longitudinal direction is mutually perpendicular to and formed is vertical with the axis for turning round detection platform.
A kind of 8. ring based on ring automation multifrequency array ultrasonic the cannot-harm-detection device any one of claim 1-7
Automate multifrequency array ultrasonic lossless detection method, it is characterised in that comprise the following steps：
S1, by ring it is coaxial be fixedly installed on revolution detection platform on, periphery multi frequency probe array and end face multi frequency probe
The initial position of array is respectively positioned on ring periphery top edges, and the wafer plane and ring of periphery multi frequency probe array are cylindrical
Face is parallel and axially arranged along ring, and it is provided with certain lift-off distance between ring periphery, end face multi frequency probe array
Wafer plane is parallel with ring end face and is radially arranged along ring, and it is provided with certain lift-off distance between ring end face, to receipts
Injection couplant in collection groove is until liquid level floods all probes；
S2, start channel ultrasonic detector, all probes start to detect, and R axles servomotor driving revolution detection platform is at the uniform velocity
Rotate, and then drive ring at the uniform velocity to be rotated around its own axis, ring rotates all while returning to initial point popped one's head in one week
The detection that paired ring one is enclosed, in detection process, the ultrasonic signal detected is sent to channel ultrasonic by all probes
The ultrasonic signal received is converted to ultrasound and sweeps oscillogram and be transferred to industrial computer by detector, channel ultrasonic detector
Row processing；
S3, by the driving of radial servo motor, radially linear module drives end face multi frequency probe array edge revolution detection platform radially
Displacement Δ y, moving direction point to ring endoporus, and Δ y=(1-S) md, m are to be visited in the multi frequency probe array each column of end face
The quantity of head, S are the repetition coverage rate of probe, and d is the wafer diameter of probe, while passes through axial servomotor driving axial line
Property module drive periphery multi frequency probe array to point to ring bottom along revolution detection platform axial movement distance, delta z, moving direction
Portion, Δ z=(1-S) nd, n are the quantity popped one's head in periphery multi frequency probe array each column, repeat step S2, until end face
Multi frequency probe array is moved to ring inner port edge and untill periphery multi frequency probe array is moved to ring bottom, that is, completes ring
The ultrasonic signal acquisition and record of part.
9. ring according to claim 8 automates multifrequency array ultrasonic lossless detection method, it is characterised in that step S1
In, lift-off between periphery multi frequency probe array and ring periphery, between end face multi frequency probe array and ring end face away from
From being xd, xd>=3N, N are near-zone length.
10. ring according to claim 8 automates multifrequency array ultrasonic lossless detection method, it is characterised in that step
In S2, the angular velocity of rotation for turning round detection platform is 0.2~1rad/s.
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Application publication date: 20180320 |