CN108414617A - Ferrite type steel small diameter tube butt girth welding seam phased array ultrasonic detecting method - Google Patents
Ferrite type steel small diameter tube butt girth welding seam phased array ultrasonic detecting method Download PDFInfo
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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
- G01N29/048—Marking the faulty objects
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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
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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
- G01N2291/26—Scanned objects
- G01N2291/267—Welds
- G01N2291/2675—Seam, butt welding
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Abstract
The invention discloses ferrite type steel small diameter tube butt girth welding seam phased array ultrasonic detecting methods, belong to the technical field of nondestructive testing of quality control system.76mm is constituted with the detecting system of the butt weld of lower wall thickness ferritic steel tubes by phased array ultrasonic detection instrument, phased array operation system, high-frequency linear array shear wave probe and calibration block, realizes the detection of butt welding seam welding defect.Volume flaw inside ferritic steel tubes weld seam is completed mainly by ray detection, but ray detection can not determine the depth of detection defect, have the detection of area-type defect compared with big limitation, have no small damage to the health of environment and operating personnel.And conventional Ultrasound detection have be affected by material itself, examined personnel's technical capability, subjective factor are affected, and can not to the defect of detection carry out imaging analysis the shortcomings of.Phased array ultrasonic detecting method overcomes disadvantage mentioned above just, and the high result of scene detection efficiency is accurate, has good exploitativeness.
Description
Technical field
The present invention relates to the methods with phased array ultrasonic detection ferrite type steel conduit weldquality, belong to ultrasonic non-destructive
Detection field.
Background technology
The ferrite type steel small diameter tube docking of 2.5~45mm of wall thickness is existing to be generally attached by welding, welding quality
Quality is directly related to constructed structural stability.Due to will produce different defects in welding process, such as crackle, do not weld
Thoroughly, incomplete fusion, these defects can all cause the use of large vessel very serious consequence, it is possible to can lead to hull holder
Fracture, structural instability etc..For this purpose, it is an extremely important and strict technology to be detected after welding, at this stage without
It includes ultrasound, ray, magnetic powder, infiltration, vortex etc. to damage detection method, and internal flaw is generally by conventional Ultrasound therein and ray
Technology detects：Ray detection in these detection methods is harmful, and to highly harmful crackle, incomplete fusion homalographic
Type defect is simultaneously insensitive, it is easy to missing inspection occur；Conventional Ultrasound testing result accuracy is easily by coupling condition and technical staff
Level influences, it is difficult to fast and accurately be detected；The precision of its detection of the methods of magnetic powder, infiltration, vortex cannot be satisfied existing
Demand.It is at present an extraordinary selection by phased array supersonic technology.
Invention content
The purpose of the present invention is to provide ferrite type steel small diameter tube butt girth welding seam phased array ultrasonic detecting method, to
Non-destructive testing for ferrite type steel pipe uses.
To achieve the above object, the present invention provides the following technical solutions：
Ferrite type steel small diameter tube butt girth welding seam phased array ultrasonic detecting method, setting ultrasonic phase array detector, phased array
Operating system, high-frequency linear array shear wave probe and calibration block constitute the butt welding of detection 2.5~45mm wall thickness ferrite type steel pipes
The step of detecting system of seam, it is used, is as follows：
（1）According to the trade mark, welding method, WPS techniques and the requirement for being detected ferrite type steel pipe fitting, to being detected ferrite type steel
Pipe fitting weld seam both sides base material surface is modified, and finishing ranging from from the outside both sides of Weld pipe mill at least 120mm, should be removed and be deoiled
The dietary fibres of the influences such as dirt, rust staining, splashing, oxide skin probe rotation, surface roughness are less than or equal to 6.3 μm, and do each
Scanning starting point, axis of a weld and reference line of the kind clearly mark as marked weld seam；
（2）The selected ultrasonic phase array detector of connection, probe, voussoir；
（3）The voussoir for detecting curved surface use should be almost the same with tested ferritic steel tubes curvature.If contact of the voussoir with workpiece
There are any point gaps to be more than 0.5mm at position, need to carry out surfacing so that surface curvature matches；
（4）Beam path model is established in SetupBuilder or EsBeamTool operating softwares, determines the sound in detected region
Beam coverage area determines applicable scanning angle, focuses rule, starting and terminate the parameters such as chip.By relevant parameter the input phase
Control battle array ultrasound measuring instrument；
（5）Acoustic beam is calibrated using test block, calibration includes the velocity of sound, voussoir delay, ACG, TCG calibration；
（6）To the base material of each 10 mm ranges of detected weld and weld seam both sides, it is 90 ° to 270 ° to carry out probe mechanical scanning direction
Scanning.Storage name is carried out to scanning file after each scanning；
（7）The scanning file generated in phased array ultrasonic detection instrument is imported into computer, using analysis software TomoView to obtaining
Scanning image analyzed, by combine calibrated S sweeps image, A sweeps image, B sweep image etc. realize to the positioning of defect,
It is quantitative；
（8）Repeat whether calibration changes, it is ensured that the correctness of testing result.
Above-mentioned ferrite type steel small diameter tube butt girth welding seam phased array ultrasonic detecting method, it is preferable that the probe
Using energy converter model 10CCEV35-32 either energy converter model 5L64-A2/A12 or energy converter model 10L32-
A1/A10 or energy converter model 7.5CCEV35-16.
Above-mentioned ferrite type steel small diameter tube butt girth welding seam phased array ultrasonic detecting method, it is preferable that the step（3）
In, the test block for the curvature that matches, workpiece caliber model of the test block diameter at 0.9 ~ 1.5 times are chosen according to diameter of work, voussoir curvature
In enclosing, if workpiece caliber is more than or equal to 500mm, plane test block can be used, test block surface roughness must not exceed 6.3 μm.
Above-mentioned ferrite type steel small diameter tube butt girth welding seam phased array ultrasonic detecting method, it is preferable that step（4）In,
When using Semiautomatic scanning mode, the calibration of encoder need to be first carried out.
Above-mentioned ferrite type steel small diameter tube butt girth welding seam phased array ultrasonic detecting method, it is preferable that tested ferrite
When class thickness of steel pipe is between 2.5mm-6mm, should use shear wave multiple echo method, energy converter model 10CCEV35-32 or
Person 10L32-A1/A10, voussoir be SA15-N60S-IH or SA1/SA10- N60S/N55S-IHC, acoustic beam angle of coverage be 50o ~
2.2T deep focus can be used in 85o, focus method.
Above-mentioned ferrite type steel small diameter tube butt girth welding seam phased array ultrasonic detecting method, it is preferable that tested ferrite
When class thickness of steel pipe is between 6mm-15mm, energy converter model 10CCEV35-32 either 7.5CCEV35-16 or
10L32-A1/A10, voussoir are SA15-N60S-IH or SA1/SA10-N60S/N55S-IHC, and acoustic beam angle of coverage is 40o ~ 80
2.2T deep focus can be used in o, focus method.
Above-mentioned ferrite type steel small diameter tube butt girth welding seam phased array ultrasonic detecting method, it is preferable that tested ferrite
When class thickness of steel pipe 15-40mm, energy converter model 5L64-A2/A12, voussoir SA1/SA10-N60S/N55S-IHC, acoustic beam
Angle of coverage is 40o ~ 70o, and 2.2T deep focus can be used for focus method or sound path focuses and focusing length includes entire weldering
Seam and heat affected area.
Above-mentioned ferrite type steel small diameter tube butt girth welding seam phased array ultrasonic detecting method, it is preferable that swept using bilateral
Mode is looked into be detected weld seam and heat-affected zone；If weld seam side is unreachable, coordinate two groups using unilateral scanning mode
Scanning is arranged, and difference lies in the offset distance of probe placement differences for two groups of scanning settings, or use no chipset.
Above-mentioned ferrite type steel small diameter tube butt girth welding seam phased array ultrasonic detecting method, it is preferable that using no
Chipset carries out single scanning in unilateral side.For different model probe chip group setting method：10CCEV35-32 or 10L32-
The probe of A1/A10 models, totally 32 chips, each scanning use 16 chips for one group, then according to the different chip of starting chip
It is organized as the rule of 1 ~ No. 16 chip, 2 ~ No. 17 chips, 3 ~ No. 18 chips, 17 ~ No. 32 chips, generally uses 1
~ No. 16 chips, 17 ~ No. 32 chips, two chipset carry out scanning；The probe of 5L64-A2/A12 models, totally 64 chips, generally
Scanning is carried out using 1 ~ 16,49 ~ 64 two chipset, 1 ~ 32,33 ~ 64 two chipset can also be used and carry out scanning.
Compared with prior art, beneficial effects of the present invention are as follows：
（1）Beam path analog simulation is carried out by using SetupBuilder or EsBeamTool softwares, it can be intuitively
Weld seam and the acoustic beam coverage condition in heat-affected zone are solved, the formulation and adjustment of scanning plan is carried out, weld seam can be avoided well
And the missing inspection of heat affected area.
（2）By using two kinds of 10CCEV35-32,7.5CCEV35-16 and the matched probe of cobra scanners, Ke Yiyou
Effect solves the detection of ultra-thin-wall small diameter tube.
（3）It is visited by using linear arrays such as 10CCEV35-32,7.5CCEV35-16,5L64-A2/A12,10L32-A1/A10
The deflection and focusing of wave beam may be implemented in the linear array arrangement mode of head, chip, improves detection sensitivity and detection resolving power.
（4）Covering of the acoustic beam to weld dimensions is swept by S, is the equal of multiple angle combinations detections, is conducive to
Detect the defect of all directions.
（5）It sweeps that acoustic beam is vertical with base material fusion face to weld seam or nearly vertical incidence by E, is conducive to find such as groove not
The defect of fusion etc.
（6）Scanning file is read out and is analyzed using TomoView softwares, scanning initial data can be passed through（A is swept
Data）B sweeps image, A sweeps image for generation, can sweep image to the S of instrument or Software Create, A sweeps image, B sweeps image progress
Fusion can carry out partial enlargement processing, to observe image to image；The scale in software may be used to defect
Carry out more easily interpretation；Gain can be shown by reducing image, weaken other interference waves, the display of prominent defect；Pass through
Any of the above scan image sees that defect is shown from three-dimensional, more intuitively, more accurate to the judgement of defective locations, from A
The original scanning wave amplitude of defect, sound path data can be read by sweeping image, find the maximum echo of defect.
（7）Detecting system is calibrated using reference block, display position of the defect in each scan image can be made
It sets more accurate.
（8）Detecting system is calibrated using reference block, defect quantifying more in each scan image can be made
It is accurate.
（9）Using said detecting system, software and accessory cooperate, can expeditiously, high detection rate to iron element
Body class butt welding of steel tube seam carries out quality testing, achievees the purpose that phased array ultrasonic detection technical substitution X-ray Testing Technology.
Description of the drawings
Fig. 1 detecting system operating diagrams；
Fig. 2 voussoirs and workpiece/test block gap schematic diagram；
Fig. 3 beam path models A；
Fig. 4 beam path Model Bs；
Mechanical scanning direction diagram of Fig. 5 probes on pipe fitting；
Fig. 6 reference block legends；
Fig. 7 sound velocity calibrations illustrate；
Fig. 8 voussoirs delay calibration diagram；
Fig. 9 reference block legends；
Figure 10 ACG calibration diagrams；
Figure 11 TCG calibration diagrams；
Figure 12 carries out E scanning diagrams using linear array probe；
Figure 13 flaw indications position（A sweep image+S sweep image+B sweep/C sweeps image）；
Figure 14 flaw indications position（S sweeps image）；
Figure 15 flaw indication linear measure longimetrys.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Term and definition：
A-scan is shown
A kind of ultrasound echo signal amplitude received at any time or the display of sound path variation, i.e. waveform, referred to as A sweep.
B-scan is shown
A kind of 2D views of display ultrasound data, usual abscissa is scanning position, and ordinate is sound path.
C-scan is shown
A kind of 2D views of display ultrasound data, abscissa and ordinate are respectively stepping axis and scanning axis.
S is scanned
Also referred to as sectoring, angle scanning or azimuth sweep, it is related with the deflection of wave beam and data display format.Work as progress
When wave beam deflects, fixed chipset is encouraged, makes acoustic beam in the angular range of restriction by implementing a series of focusing rule
Carry out deflection scanning；Shown as data, it is the two dimension view that all angles A is swept, and the delay by being swept to each A and
Refraction angle is modified, and keeps the instruction on view corresponding with the actual position on workpiece.
E is scanned
Also referred to as linear scan or line is swept, and electronically realizes the scanning to workpiece, and phase is applied to identical focusing rule
The different chips group in battle array probe is controlled, every group of activation chip generates the acoustic beam of a certain special angle, brilliant by changing starting activation
The position of piece makes the acoustic beam be moved forward and backward along cell array direction, to realize similar to before and after conventional manual ultrasonic detecting probe
Mobile detection result.Line scanning includes that the scanning of vertical incidence line and oblique incidence line scan two kinds.
（Machinery）Scanning
It mechanically realizes the scanning to workpiece, i.e., realizes the movement of wave beam by mobile probe, be allowed to quilt in inswept workpiece
Detection zone.
ACG (Angle Corrected Gain)
I.e. angle gain is calibrated.When fan sweeping is retouched, because between voussoir difference in attenuation, chip difference and acoustic pressure reciprocate through rate difference etc. because
Element causes different angle acoustic beam to have differences the echo amplitude of the reflector of identical size at identical sound path, using software to this
Difference is modified, and makes up to identical amplitude.
TCG (Time Corrected Gain)
Also referred to as time gain is calibrated, in the calibration of sector/linear scan, to the echo of the identical size reflector of different sound paths into
Row gain-boosted op amp makes up to identical amplitude.It is equivalent to the DAC calibration curves to all scanning beam progress.
Detect datum line
Equipment shows in a-scan and schemes by TCG calibrations and corresponding gain compensation（A pan figures）Wave all over the screen within the scope of sound path
High 80% magnitude line.
Embodiment 1
Ferrite type steel small diameter tube butt girth welding seam phased array ultrasonic detecting method, ultrasonic phase array detector, phased array operation
System, high-frequency linear array shear wave probe and calibration block constitute the inspection of the butt weld of detection 2.5~45mm thickness ferrite type steel pipes
Examining system, detecting system operating diagram are shown in Fig. 1, by taking pipe thickness Φ 114*8.5mm as an example, it use the step of it is as follows：
（1）According to the trade mark, welding method, WPS techniques and the requirement for being detected ferrite type steel pipe fitting, to being detected ferrite type steel
Pipe fitting weld seam both sides base material surface is modified, and finishing ranging from from the outside both sides 120mm of Weld pipe mill, should remove grease, rust
The dietary fibres of the influences such as spot, splashing, oxide skin probe rotation, surface roughness is less than or equal to 6.3 μm, and does various clear
Scanning starting point, axis of a weld and reference line of the mark as marked weld seam；
（2）The selected ultrasonic phase array detector of connection, probe, voussoir；
（3）The voussoir for detecting curved surface use should be almost the same with tested ferritic steel tubes curvature.If contact of the voussoir with workpiece
There are any point gaps to be more than 0.5mm at position, need to carry out surfacing so that surface curvature matches, refer to Fig. 2；
（4）Beam path model is established in SetupBuilder or EsBeamTool operating softwares and refers to Fig. 3, Fig. 4, is determined tested
The acoustic beam coverage area in region is surveyed, applicable scanning angle is determined, focuses rule, starting and terminate the parameters such as chip.It will be related
Parameter inputs phased array ultrasound measuring instrument；
（5）Acoustic beam is calibrated using test block, calibration includes the velocity of sound, voussoir delay, ACG, TCG calibration；
Using reference block, R30mm the and R50mm circular arcs calibration materials velocity of sound on Fig. 6 is referred to.
The sound velocity calibration interface of equipment is initially entered, sound path value 30mm, 50mm is inputted, by probe placement in reference block
On, so that intermediate angle wave beam is generated echo-signal in R30 and R50 cambered surfaces, mobile probe finds centre on A pan figures
Angle wave beam generates the highest wave of echo-signal in R30 and R50 cambered surfaces, and first echo will be generated in R30 cambered surfaces using gate believes
Number highest wave entangle, click get position buttons, reuse gate will in R50 cambered surfaces generate echo-signal highest wave
It entangles, clicks get position buttons, complete the calibration to acoustic velocity of material, as shown in Figure 7.
Then it needs progress voussoir delay calibration using R30 circular arcs calibration voussoir delay in reference block, sees Fig. 8.It is required that
Voussoir delay error is within the scope of ± 0.5mm.The voussoir delay calibration interface for initially entering equipment tries probe placement in standard
On block, mobile probe makes all angle wave beams that can generate echo-signal in R30 cambered surfaces, clicks calibration knob, completes school
It is accurate.
ACG calibrations use reference block（Refer to Fig. 9）On cross-drilled hole carry out ACG calibrations, see Figure 10：Initially enter equipment
ACG Calibration interfaces, by probe placement in reference block, mobile probe makes all angle wave beams that can be generated back on cross-drilled hole
Wave signal.Calibration knob is clicked, calibration is completed.It is required that the wave beam of all angles obtains approximately uniform wave height, wave on cross-drilled hole
Width deviation is in ± 5% altitude range all over the screen.
TCG time gains are calibrated, and are equivalent to addition DAC curves, are seen Figure 11.Use the cross-drilled hole of different depth in reference block
TCG is calibrated, it is amplitude reference to be arranged the 80% of height all over the screen, it is desirable that for wave amplitude error within the scope of ± 5%FSH, TCG curves should be at least
3 points of addition should be calibrated at least using 3 cross-drilled holes；TCG curves should at least be calibrated to 2 times of plate thickness depths under normal circumstances
Degree, TCG curves should at least be calibrated to 3 times of plate thickness depth when according to multiple echo method.
（5）According to beam path model, determines applicable scanning angle, focuses rule, starting and terminate the parameters such as chip,
Relevant parameter is inputted into phased array ultrasound measuring instrument；
（6）Scanning starting point, axis of a weld and the reference line of weld seam are marked on workpiece.Pipe butt welded joint is swept
It looks into, should ensure that scanning zone beginning and end has certain overlapping.Overlapping region is set as the width 40mm of a probe, to quilt
Weld seam and the base material of each 10mm ranges in weld seam both sides are examined, the scanning that probe mechanical scanning direction is 90 ° to 270 ° is carried out, refers to figure
5, to obtain scanning imaging；Scanning direction is opposite when probe is located at 90 degree and 270 degree of positions.90 degree of position probe scanning directions
For：It is reference, counter clockwise direction scanning with acoustic beam exit direction；270 degree of position probe scanning directions are：With acoustic beam exit direction
For reference, clockwise direction scanning.Rotational scan device is to detect weld seam and HAZ, and probe motion track is relative to the inclined of reference line
± 2mm is not to be exceeded in difference, and 50mm/s is not to be exceeded in probe scanning speed.After this scanning, freezing data assesses data
Validity, and preserve scanning file.After all scannings, workpiece surface is cleaned.As shown in Fig. 3/4 and Figure 12, below
It is swept for S and sweeps into capable be described in detail below with E：S is swept：The chipset for several chips composition of popping one's head in is excited, activation is brilliant
The acoustic beam of piece group launch angle range, the acoustic beam are transmitted by couplant, voussoir into workpiece, and direct projection acoustic beam carries out angle in workpiece
Spend range in by angle scanning, cover the lower half portion of weld dimensions；Meanwhile acoustic beam will generate reflection in bottom surface,
Primary event wave beam covers the top half of weld dimensions.E is swept：The chipset for several chips composition of popping one's head in is carried out
Excitation, every group of activation chip generate the acoustic beam of a certain special angle, and the position of activation chip is originated by changing, makes the acoustic beam edge
Cell array direction is moved forward and backward, to realize the detection result of similar conventional manual ultrasonic detecting probe back-and-forth motion.Acoustic beam
It is transmitted into workpiece by couplant, voussoir, acoustic beam should be incident perpendicular to weld seam and base material fusion face as possible.
（7）The scanning file generated in phased array ultrasonic detection instrument is imported into computer, utilizes analysis software TomoView's
2.10R or following versions analyze the scanning image of acquisition, and by combining, calibrated S sweeps image, E sweeps image, A sweeps figure
Picture, B sweep image etc. and realize positioning, quantitatively to defect；
（8）Repeat whether calibration changes, it is ensured that the correctness of testing result.
Above-mentioned ferrite type steel small diameter tube butt girth welding seam phased array ultrasonic detecting method, it is preferable that the probe
Using energy converter model 10CCEV35-32 either energy converter model 10L32-A1/A10 or energy converter model
7.5CCEV35-16；Olympus OmniScan MX2 32:128PR phased array detectors, it is preferable that use OmniScan
MXU 4.2R2 and the above Edition operating system.
Above-mentioned ferrite type steel small diameter tube butt girth welding seam phased array ultrasonic detecting method, it is preferable that the step（3）
In, the test block for the curvature that matches is chosen according to diameter of work, voussoir curvature, in principle workpiece of the test block diameter at 0.9 ~ 1.5 times
Within the scope of caliber, test block surface roughness must not exceed 6.3 μm.
Above-mentioned ferrite type steel small diameter tube butt girth welding seam phased array ultrasonic detecting method, it is preferable that step（4）In,
When using Semiautomatic scanning mode, it is also necessary to use encoder, therefore encoder calibration need to be carried out in the plane.Flat
The distance of 500mm or more is measured on face, and records the distance values.To encoder tanks, encoder is made steadily to move the distance,
By distance values input coding device Calibration interface, encoder calibration is completed.Encoder should be accurate to total scanning length 1% or
10mm takes smaller value.
Above-mentioned ferrite type steel small diameter tube butt girth welding seam phased array ultrasonic detecting method, it is preferable that tested ferrite
When class thickness of steel pipe is between 6mm-15mm, energy converter model 10CCEV35-32 either 7.5CCEV35-16 or
10L32-A1/A10, voussoir are SA15-N60S-IH or SA1/SA10-N60S/N55S-IHC, and acoustic beam angle of coverage is 40o ~ 80
2.2T deep focus can be used in o, focus method.
Above-mentioned ferrite type steel small diameter tube butt girth welding seam phased array ultrasonic detecting method, it is preferable that swept using bilateral
Mode is looked into be detected weld seam and heat-affected zone；If weld seam side is unreachable, coordinate two groups using unilateral scanning mode
Scanning is arranged, and difference lies in the offset distance of probe placement differences for two groups of scanning settings, or use no chipset.
Above-mentioned ferrite type steel small diameter tube butt girth welding seam phased array ultrasonic detecting method, it is preferable that using no
Chipset carries out single scanning in unilateral side.For 8.5mm wall thickness tubes, using 10CCEV35-32 10L32-A1/A10 models
Probe, totally 32 chips, each scanning use 16 chips for one group, then is organized as 1 ~ 16 according to the different chip of starting chip
Number chip, 2 ~ No. 17 chips, 3 ~ No. 18 chips, 17 ~ No. 32 chips generally use 1 ~ No. 16 chip, 17 ~ 32
Two chipset of number chip carry out scannings；Using the probe of 7.5CCEV35-16 models, totally 16 chip, then two groups of settings are generally adopted
Excite two kinds of scanning offsets of cooperation simultaneously with 16 chips.
Such as Figure 13-15 data interpretations, flaw indication positioning is specific location of the defect in weld seam：It is visited including defect distance
The position in head forward position, defect buried depth.The figure for observing direct wave and primary reflection under normal circumstances is judged for defect,
Also the image of observable multiple reflection if necessary.（Weld groove information can be added by the interpretations such as TomoView software
Figure, differentiation of the assist operators to flaw indication are swept to S.）As shown in Figure 13, Figure 14, flaw indication is located in S and sweeps on figure just
After step determines that the reflection of the geometry in view, voussoir fixation involve flaw indication, we can drag the angle indicator in fan sweeping,
It places it in defect to show at highest wave amplitude (wave amplitude, which is shown, can see that A is swept), the highest wave amplitude that defect is shown in fan sweeping view at this time
Position will appear two pointers of red right-angled intersection, can determine that flaw indication is welding by the number display of red vertical needle
Horizontal position in seam can determine that the depth of flaw indication is shown by the number display of red horizontal pointer.Flaw indication is fixed
Amount includes flaw indication quantitative-length, can be measured by following principles：If only there are one peaks for the defects of B pan figures echo
Value can reduce the relative sensitivity method of 6dB to measure, if flaw echo has multiple peak values, with endpoint with defect peak value or so
The relative sensitivity method that peak value reduces 6dB measures.6dB methods, also referred to as half value method, reflector diameter（Length, height and（Or）
Width）Evaluation Method, i.e., probe is moved to from maximum reflection wave height maximum wave height reduces at half, with the mobile distance of probe come
Assess reflector diameter.In PAUT detections, if maximum wave height is more than range all over the screen, this wave height is contemplated that as height all over the screen.Base
Color coding system is established in reflection wave height, is displayed in red more than 100% height all over the screen, it is green more than 60% height display all over the screen,
It is displayed in blue more than 30% height all over the screen.As shown in figure 15.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
Understanding without departing from the principles and spirit of the present invention can carry out these embodiments a variety of variations, modification, replace
And modification, the scope of the present invention is defined by the appended.
Claims (8)
- It is setting ultrasonic phase array detector, phased 1. ferrite type steel small diameter tube butt girth welding seam phased array ultrasonic detecting method Battle array operating system, high-frequency linear array shear wave probe and calibration block constitute the docking of detection 2.5~45mm wall thickness ferrite type steel pipes The step of detecting system of weld seam, it is used, is as follows：（1）According to the trade mark, welding method, WPS techniques and the requirement for being detected ferrite type steel pipe fitting, to being detected ferrite type steel Pipe fitting weld seam both sides base material surface is modified, and finishing ranging from from the outside both sides of Weld pipe mill at least 120mm, should be removed and be deoiled The dietary fibres of the influences such as dirt, rust staining, splashing, oxide skin probe rotation, surface roughness are less than or equal to 6.3 μm, and do each Scanning starting point, axis of a weld and reference line of the kind clearly mark as marked weld seam；（2）The selected ultrasonic phase array detector of connection, probe, voussoir；（3）The voussoir for detecting curved surface use should be almost the same with tested ferritic steel tubes curvature.If contact of the voussoir with workpiece There are any point gaps to be more than 0.5mm at position, need to carry out surfacing so that surface curvature matches；（4）Beam path model is established in SetupBuilder or EsBeamTool operating softwares, determines the sound in detected region Beam coverage area determines applicable scanning angle, focuses rule, starting and terminate the parameters such as chip.By relevant parameter the input phase Control battle array ultrasound measuring instrument；（5）Acoustic beam is calibrated using test block, calibration includes the velocity of sound, voussoir delay, ACG, TCG calibration；（6）To the base material of each 10 mm ranges of detected weld and weld seam both sides, it is 90 ° to 270 ° to carry out probe mechanical scanning direction Scanning.Storage name is carried out to scanning file after each scanning；（7）The scanning file generated in phased array ultrasonic detection instrument is imported into computer, using analysis software TomoView to obtaining Scanning image analyzed, by combine calibrated S sweeps image, A sweeps image, B sweep image etc. realize to the positioning of defect, It is quantitative；（8）Repeat whether calibration changes, it is ensured that the correctness of testing result.
- 2. ferrite type steel small diameter tube butt girth welding seam phased array ultrasonic detecting method according to claim 1, it is characterised in that： The probe uses energy converter model 10CCEV35-32 either energy converter model 5L64-A2/A12 or transducing type Number be 10L32-A1/A10 or energy converter model 7.5CCEV35-16.
- 3. ferrite type steel small diameter tube butt girth welding seam phased array ultrasonic detecting method according to claim 1, which is characterized in that The step（3）In, the test block for the curvature that matches is chosen according to diameter of work, voussoir curvature, test block diameter is at 0.9 ~ 1.5 times Workpiece caliber within the scope of, if workpiece caliber be more than or equal to 500mm, plane test block can be used, test block surface roughness must not More than 6.3 μm.
- 4. ferrite type steel small diameter tube butt girth welding seam phased array ultrasonic detecting method according to claim 1, it is characterised in that： Step（4）In, when using Semiautomatic scanning mode, it need to first carry out the calibration of encoder.
- 5. special according to Claims 2 or 3 or 4 ferrite type steel small diameter tube butt girth welding seam phased array ultrasonic detecting method Sign is：When tested ferrite type thickness of steel pipe is between 2.5mm-6mm, shear wave multiple echo method, transducing type should be used Number be 10CCEV35-32 or 10L32-A1/A10, voussoir be SA15-N60S-IH or SA1/SA10- N60S/N55S-IHC, Acoustic beam angle of coverage is 50o ~ 85o, and 2.2T deep focus can be used in focus method.
- 6. special according to Claims 2 or 3 or 4 ferrite type steel small diameter tube butt girth welding seam phased array ultrasonic detecting method Sign is：When tested ferrite type thickness of steel pipe is between 6mm-15mm, energy converter model 10CCEV35-32 or 7.5CCEV35-16 10L32-A1/A10, voussoir are SA15-N60S-IH or SA1/SA10-N60S/N55S-IHC, acoustic beam Angle of coverage is 40o ~ 80o, and 2.2T deep focus can be used in focus method.
- 7. special according to Claims 2 or 3 or 4 ferrite type steel small diameter tube butt girth welding seam phased array ultrasonic detecting method Sign is：When tested ferrite type thickness of steel pipe 15-40mm, energy converter model 5L64-A2/A12, voussoir SA1/SA10- N60S/N55S-IHC, acoustic beam angle of coverage are 40o ~ 70o, focus method can be used 2.2T deep focus or sound path focus and Focusing length includes entire weld dimensions.
- 8. according to the ferrite type steel small diameter tube butt girth welding seam phased array ultrasonic detecting method of claim 5,6,7, feature It is：When welded seam area allows bilateral scanning, should be detected using bilateral scanning wave beam；When welded seam area only allows unilateral side When scanning, unilateral scanning mode should be used to coordinate two groups of scanning settings, difference lies in the inclined of probe placement for two groups of scanning settings It is different to move distance, or uses no chipset.
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| CN109298074A (en) * | 2018-10-23 | 2019-02-01 | 南京高速齿轮制造有限公司 | By ultrasonic wave to the detection method of the gear teeth of gear in process |
| CN109946387A (en) * | 2019-03-27 | 2019-06-28 | 东方电气集团东方锅炉股份有限公司 | The reference block of small diameter tube phased array ultrasonic detection and the detection check method for using the test block |
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| CN111537612A (en) * | 2020-05-26 | 2020-08-14 | 山东丰汇工程检测有限公司 | Phased array detection and evaluation method for austenitic stainless steel small-diameter pipe welding joint |
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