CN109239197A - The difference detection method when ultrasonic diffraction of straight tube and elbow banjo fixing butt jointing - Google Patents
The difference detection method when ultrasonic diffraction of straight tube and elbow banjo fixing butt jointing Download PDFInfo
- Publication number
- CN109239197A CN109239197A CN201811122411.2A CN201811122411A CN109239197A CN 109239197 A CN109239197 A CN 109239197A CN 201811122411 A CN201811122411 A CN 201811122411A CN 109239197 A CN109239197 A CN 109239197A
- Authority
- CN
- China
- Prior art keywords
- scanning
- probe
- diffraction
- defect
- away
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 55
- 241000538562 Banjos Species 0.000 title claims description 39
- 239000000523 sample Substances 0.000 claims abstract description 121
- 230000007547 defect Effects 0.000 claims abstract description 64
- 238000012360 testing method Methods 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 11
- 101150003196 PCS1 gene Proteins 0.000 claims description 6
- 101150071172 PCS2 gene Proteins 0.000 claims description 6
- 101100493726 Phalaenopsis sp. BIBSY212 gene Proteins 0.000 claims description 6
- 101100030895 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) RPT4 gene Proteins 0.000 claims description 6
- 238000010408 sweeping Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 abstract description 2
- 210000001503 joint Anatomy 0.000 abstract 4
- 238000007689 inspection Methods 0.000 abstract 1
- 238000003466 welding Methods 0.000 abstract 1
- 208000037656 Respiratory Sounds Diseases 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
本发明提供了一种直管与弯头对接接头的超声衍射时差检测方法，属于焊缝检测领域，包括步骤：根据预设条件确定初始探头间距及发射探头的声束中心距焊缝中心线的距离；将发射探头与接收探头放置于焊缝同一侧，进行扫查；根据扫查图像获取缺陷尺寸。本发明提供的直管与弯头对接接头的超声衍射时差检测方法，利用超声波衍射时差检测技术，并且可以在焊缝单侧进行扫查，只需在直管侧布置两个探头，能够实现直管与弯管对接接头位置的超声波衍射时差检测的单侧扫查方式，进而提高直管与弯管对接接头位置的检测精确度。
The invention provides an ultrasonic diffraction time difference detection method for a butt joint of a straight pipe and an elbow, belonging to the field of welding seam inspection. distance; place the transmitting probe and the receiving probe on the same side of the weld for scanning; obtain the defect size according to the scanning image. The ultrasonic diffraction time difference detection method for the butt joint of a straight pipe and an elbow provided by the present invention utilizes the ultrasonic diffraction time difference detection technology, and can perform scanning on one side of the weld. The single-side scanning method of ultrasonic diffraction time difference detection of the butt joint position of the pipe and the elbow, thereby improving the detection accuracy of the butt joint position of the straight pipe and the elbow.
Description
Technical field
The invention belongs to weld seam detection technical fields, more specifically, are related to a kind of straight tube and elbow banjo fixing butt jointing
Difference detection method when ultrasonic diffraction.
Background technique
Ultrasonic wave diffraction time difference detection technique (TOFD) using increasingly extensive, TOFD is main compared with other detection methods
Wanting advantage includes: that one, defect detection rate is high, and according to ASSOCIATE STATISTICS, the effective recall rate of defect is more than 90%, is more than other each side
Method；Two, insensitive to the angle of defect during detection, it is quantitatively the time based on diffracted signal rather than is based on signal
Wave amplitude；Three, there is very high quantitative accuracy, absolute error is about 1mm.TOFD detection for weld seam, need to be by two TOFD
Probe is respectively placed in weld seam two sides, and usually two probes are across weld seam, and sound beam direction is vertical with weld seam trend.However, for
The butt weld of pressure pipeline (straight tube) and elbow, since weld seam two sides base material is not contour or elbow side is the isostructural original in inclined-plane
Cause tends not to place TOFD probe in elbow side, to cannot achieve the TOFD detection of such weld seam.
Summary of the invention
The purpose of the present invention is to provide difference detection methods when the ultrasonic diffraction of a kind of straight tube and elbow banjo fixing butt jointing, with solution
The technical issues of TOFD detection cannot being carried out to straight tube and elbow banjo fixing butt jointing certainly existing in the prior art.
To achieve the above object, the technical solution adopted by the present invention is that: the super of a kind of straight tube and elbow banjo fixing butt jointing is provided
Difference detection method when sound diffraction, includes the following steps:
Determine that initially the acoustic beam central of probe spacing and transmitting probe is away from the distance of axis of a weld according to preset condition；
Transmitting probe and receiving transducer are placed in weld seam the same side, carry out scanning；
Flaw size is obtained according to scanning image.
Further, described to include: according to scanning image acquisition flaw size
Adjustment probe spacing, repeats scanning；
It determines and lacks according to time in scanning twice of upper diffraction endpoint and lower diffraction endpoint diffracted signal and probe spacing
Fall into length and defect width.
Further, time according to upper diffraction endpoint and lower diffraction endpoint diffracted signal in scanning twice and away from
The horizontal distance of transmitting probe determines defect length and defect width includes:
Determine defect upper extreme point away from sweeping according to time of the upper diffraction endpoint diffracted signal in scanning twice and probe spacing
Look into the depth in face and the horizontal distance away from transmitting probe；
Determine defect lower extreme point away from sweeping according to time of the lower diffraction endpoint diffracted signal in scanning twice and probe spacing
Look into the depth in face and the horizontal distance away from transmitting probe.
Further, the time and probe spacing according to upper diffraction endpoint diffracted signal in scanning twice determines and lacks
Fall into the formula of depth of the upper extreme point away from scanning face and the horizontal distance away from transmitting probe are as follows:
Wherein, c is the longitudinal wave velocity in material, tUpper 1For time of the upper diffraction endpoint diffracted signal in first time scanning,
tUpper 2For time of the upper diffraction endpoint diffracted signal in second of scanning, PCS1 is initial probe spacing, and PCS2 is to visit after adjusting
Head spacing；
Depth h of the defect upper extreme point away from scanning face is obtained according to formula (1) and formula (2)1And the level away from transmitting probe
Distance x1, also, h1< 0, x1> 0；
The time and probe spacing according to lower diffraction endpoint diffracted signal in scanning twice determines defect lower extreme point
The formula of depth away from scanning face and the horizontal distance away from transmitting probe are as follows:
Wherein, c is the longitudinal wave velocity in material, tLower 1For time of the lower diffraction endpoint diffracted signal in first time scanning,
tLower 2For time of the lower diffraction endpoint diffracted signal in second of scanning, PCS1 is initial probe spacing, and PCS2 is to visit after adjusting
Head spacing；
Depth h of the defect lower extreme point away from scanning face is obtained according to formula (3) and formula (4)2And the level away from transmitting probe
Distance x2, also, h2< 0, x2> 0；
Depth h according to defect upper extreme point away from scanning face1And depth h of the defect lower extreme point away from scanning face2Obtain defect length
Formula are as follows:
H=| h1-h2| (5)
Horizontal distance x according to defect upper extreme point away from transmitting probe1And horizontal distance x of the defect lower extreme point away from transmitting probe2
Obtain the formula of defect width are as follows:
W=| x1-x2| (6)。
Further, the acoustic beam central that pop one's head in spacing and transmitting probe are determined according to preset condition is away from axis of a weld
Distance include:
It is determined according to the half-angle of spread of weld width, thickness of workpiece, the half-angle of spread of transmitting probe and receiving transducer
The probe distance of spacing and transmitting probe away from axis of a weld.
Further, described that transmitting probe and receiving transducer are placed in weld seam the same side, after progress scanning further include:
Interpretation is carried out to scanning result, defect image is shown if not finding, completes to scan.
Further, the adjustment probe spacing, repeating scanning includes:
Interpretation is carried out to scanning result, if discovery defect image is shown, the spacing of transmitting probe and receiving transducer is hidden
Big or reduce default adjustment distance, the spacing that makes initially to pop one's head in becomes spacing of popping one's head in after adjusting, and repeats a scanning.
Further, the default adjustment distance is the 8%-12% of initial probe spacing.
Further, the default adjustment distance is the 10% of initial probe spacing.
Further, described that transmitting probe and receiving transducer are placed in weld seam the same side, carrying out scanning includes:
Transmitting probe and receiving transducer are mounted on scanning frame respectively, and are connected respectively with test host；
Scanning frame is placed on base material to be checked according to transmitting probe away from the distance value of axis of a weld；
Starting test host, adjusts separately the velocity of sound, time window, signal gain, encoder step parameter, carries out to weld seam
Scanning.
The beneficial effect of difference detection method is when the ultrasonic diffraction of straight tube provided by the invention and elbow banjo fixing butt jointing: with
The prior art is compared, the difference detection method when ultrasonic diffraction of straight tube of the present invention and elbow banjo fixing butt jointing, when using ultrasonic wave diffraction
Poor detection technique, and can weld seam unilateral side carry out scanning, only need to straight tube side arrange two probe, can be realized straight tube with
The unilateral scanning mode of the ultrasonic wave diffraction time difference detection of bend pipe banjo fixing butt jointing position, and then improve straight tube and bend pipe banjo fixing butt jointing
The detection accuracy of position.
Detailed description of the invention
It to describe the technical solutions in the embodiments of the present invention more clearly, below will be to embodiment or description of the prior art
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only of the invention some
Embodiment for those of ordinary skill in the art without any creative labor, can also be according to these
Attached drawing obtains other attached drawings.
Fig. 1 is the use state diagram of ultrasonic wave diffraction time difference detection device used in the embodiment of the present invention；
The principle of difference detection method when Fig. 2 is the ultrasonic diffraction of straight tube provided in an embodiment of the present invention and elbow banjo fixing butt jointing
Figure one；
The principle of difference detection method when Fig. 3 is the ultrasonic diffraction of straight tube provided in an embodiment of the present invention and elbow banjo fixing butt jointing
Figure two；
When Fig. 4 is the ultrasonic diffraction using straight tube provided in an embodiment of the present invention and elbow banjo fixing butt jointing difference detection method into
When row test, the scanning image that shows on test host.
Wherein, each appended drawing reference in figure:
1- straight tube；2- bend pipe；3- weld seam；4- crackle；5- transmitting probe；6- receiving transducer；7- incidence wave；8- diffracted wave；
9- acoustic beam edge；10- tests host；11- probe wire
Specific embodiment
In order to which technical problems, technical solutions and advantages to be solved are more clearly understood, tie below
Accompanying drawings and embodiments are closed, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only
To explain the present invention, it is not intended to limit the present invention.
Also referring to Fig. 1 to Fig. 3, now the ultrasonic diffraction time difference of straight tube provided by the invention and elbow banjo fixing butt jointing is examined
Survey method is illustrated.The difference detection method when ultrasonic diffraction of the straight tube and elbow banjo fixing butt jointing, includes the following steps:
Determine that initially the acoustic beam central of probe spacing and transmitting probe is away from the distance of axis of a weld, energy according to preset condition
Enough ensure that ultrasonic acoustic can cover welded seam area to the maximum extent but also obtain signal-to-noise ratio high as far as possible；
Transmitting probe and receiving transducer are placed in weld seam the same side, carry out scanning；
Flaw size is obtained according to scanning image.
Test device is made of two probes, a transmitting effect of having popped one's head in, another reception effect of having popped one's head in, principle
It is that the position for calculating crackle is re-emitted by energy after ultrasonic wave diffraction.
The difference detection method when ultrasonic diffraction of straight tube provided by the invention and elbow banjo fixing butt jointing, compared with prior art,
Using ultrasonic wave diffraction time difference detection technique, and scanning can be carried out in weld seam unilateral side, only need to arrange two spies in straight tube side
Head, can be realized the unilateral scanning mode of the ultrasonic wave diffraction time difference detection of straight tube and bend pipe banjo fixing butt jointing position, and then improve
The detection accuracy of straight tube and bend pipe banjo fixing butt jointing position.
A kind of specific reality of difference detection method when as the ultrasonic diffraction of straight tube provided by the invention and elbow banjo fixing butt jointing
Mode is applied, obtaining flaw size according to scanning image includes:
Adjustment probe spacing, repeats scanning；
It determines and lacks according to time in scanning twice of upper diffraction endpoint and lower diffraction endpoint diffracted signal and probe spacing
Fall into length and defect width.
When test, transmitting probe is used as using little refraction angle probe, big refraction angle probe is used as receiving transducer.Due to using
Probe arrangement mode of the invention carries out the scanning of single side unilateral side, cannot receive straight-through wave and bottom as being detected conventional TOFD
Face echo-signal leads to not be accurately positioned defect, therefore by the way of double scannings, unique difference of scanning twice
It is only that the difference of probe spacing.
Referring to Fig. 4, difference detection method when as the ultrasonic diffraction of straight tube provided by the invention and elbow banjo fixing butt jointing
A kind of specific embodiment, according to time in scanning twice of upper diffraction endpoint and lower diffraction endpoint diffracted signal and away from transmitting
The horizontal distance of probe determines defect length and defect width includes:
Determine defect upper extreme point away from sweeping according to time of the upper diffraction endpoint diffracted signal in scanning twice and probe spacing
Look into the depth in face and the horizontal distance away from transmitting probe；
Determine defect lower extreme point away from sweeping according to time of the lower diffraction endpoint diffracted signal in scanning twice and probe spacing
Look into the depth in face and the horizontal distance away from transmitting probe.In Fig. 4, previous (left side) waveform is crackle upper prong diffracted signal,
The latter waveform (right side) is crackle lower prong diffracted signal.
When test, when, there are crack defect, the upper extreme point diffracted signal and lower extreme point diffracted signal of defect will divide in weld seam
It is not received probe to be received, scanning image as shown in Figure 4 is obtained.Relational expression used by testing are as follows:
Wherein, c is the longitudinal wave velocity in material；
T is the flaw indication time difference；
X is horizontal distance of the defect away from transmitting probe center；
H is the buried depth (distance of the defect away from scanning face) of defect；
PCS is two probe spacing.Eventually by solution binary quadratic equation group to realize the accurate positioning to defect.
One kind of difference detection method when specifically, as the ultrasonic diffraction of straight tube provided by the invention and elbow banjo fixing butt jointing
Specific embodiment determines defect upper extreme point according to time of the upper diffraction endpoint diffracted signal in scanning twice and probe spacing
The formula of depth away from scanning face and the horizontal distance away from transmitting probe are as follows:
Wherein, c is the longitudinal wave velocity in material, tUpper 1For time of the upper diffraction endpoint diffracted signal in first time scanning,
tUpper 2For time of the upper diffraction endpoint diffracted signal in second of scanning, PCS1 is initial probe spacing, and PCS2 is to visit after adjusting
Head spacing；
Depth h of the defect upper extreme point away from scanning face is obtained according to formula (1) and formula (2)1And the level away from transmitting probe
Distance x1, also, h1< 0, x1> 0；
The time and probe spacing according to lower diffraction endpoint diffracted signal in scanning twice determines defect lower extreme point
The formula of depth away from scanning face and the horizontal distance away from transmitting probe are as follows:
Wherein, c is the longitudinal wave velocity in material, tLower 1For time of the lower diffraction endpoint diffracted signal in first time scanning,
tLower 2For time of the lower diffraction endpoint diffracted signal in second of scanning, PCS1 is initial probe spacing, and PCS2 is to visit after adjusting
Head spacing；
Depth h of the defect lower extreme point away from scanning face is obtained according to formula (3) and formula (4)2And the level away from transmitting probe
Distance x2, also, h2< 0, x2> 0；
Depth h according to defect upper extreme point away from scanning face1And depth h of the defect lower extreme point away from scanning face2Obtain defect length
Formula are as follows:
H=| h1-h2| (5)
Horizontal distance x according to defect upper extreme point away from transmitting probe1And horizontal distance x of the defect lower extreme point away from transmitting probe2
Obtain the formula of defect width are as follows:
W=| x1-x2| (6)。
A kind of specific reality of difference detection method when as the ultrasonic diffraction of straight tube provided by the invention and elbow banjo fixing butt jointing
Mode is applied, the acoustic beam central for determining probe spacing and transmitting probe according to preset condition includes: away from the distance of axis of a weld
It is determined according to the half-angle of spread of weld width, thickness of workpiece, the half-angle of spread of transmitting probe and receiving transducer
The probe distance of spacing and transmitting probe away from axis of a weld.
The probe that test selects two refraction angles different cooperates, for example, big refraction angle (such as 60 degree) probe is selected to make
For ultrasonic wave receiving transducer, select little refraction angle probe (such as 20 degree) as transmitting probe, wherein transmitting probe is away from Weld pipe mill
The distance of line is expressed as L.Specific mode of choosing is referring to table 1.
The probe of 1 plate banjo fixing butt jointing of table is recommendatory to be select and set
A kind of specific reality of difference detection method when as the ultrasonic diffraction of straight tube provided by the invention and elbow banjo fixing butt jointing
Mode is applied, to improve detection efficiency, transmitting probe and receiving transducer are placed in weld seam the same side, also wrapped after scanning
It includes:
Interpretation is carried out to scanning result, defect image is shown if not finding, completes to scan.
A kind of specific reality of difference detection method when as the ultrasonic diffraction of straight tube provided by the invention and elbow banjo fixing butt jointing
Mode is applied, adjustment probe spacing, repeating scanning includes:
Interpretation is carried out to scanning result, if discovery defect image is shown, the spacing of transmitting probe and receiving transducer is hidden
Big or reduce default adjustment distance, the spacing that makes initially to pop one's head in becomes spacing of popping one's head in after adjusting, and repeats a scanning.
A kind of specific reality of difference detection method when as the ultrasonic diffraction of straight tube provided by the invention and elbow banjo fixing butt jointing
Mode is applied, presets adjustment distance as the 8%-12% of initial probe spacing.
A kind of specific reality of difference detection method when as the ultrasonic diffraction of straight tube provided by the invention and elbow banjo fixing butt jointing
Mode is applied, presets adjustment distance as the 10% of initial probe spacing.
A kind of specific reality of difference detection method when as the ultrasonic diffraction of straight tube provided by the invention and elbow banjo fixing butt jointing
Mode is applied, transmitting probe and receiving transducer are placed in weld seam the same side, carrying out scanning includes:
Transmitting probe and receiving transducer are mounted on scanning frame respectively, and are connected respectively with test host；
Scanning frame is placed on base material to be checked according to transmitting probe away from the distance value of axis of a weld；
Starting test host, adjusts separately the velocity of sound, time window, signal gain, encoder step parameter, carries out to weld seam
Scanning.
Difference detection method is realized using TOFD elder generation when the ultrasonic diffraction of straight tube provided by the invention and elbow banjo fixing butt jointing
Into technology for the defects detection of pressure pipeline (straight tube) and the butt weld of elbow, breach such weld seam because reasons in structure without
Method places probe to be difficult to the limitation detected, has given full play to TOFD defect detection rate height, advantage with high accuracy.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (10)
1. difference detection method when the ultrasonic diffraction of straight tube and elbow banjo fixing butt jointing, which comprises the steps of:
Determine that initially the acoustic beam central of probe spacing and transmitting probe is away from the distance of axis of a weld according to preset condition；
Transmitting probe and receiving transducer are placed in weld seam the same side, carry out scanning；
Flaw size is obtained according to scanning image.
2. difference detection method when the ultrasonic diffraction of straight tube as described in claim 1 and elbow banjo fixing butt jointing, which is characterized in that institute
It states and includes: according to scanning image acquisition flaw size
Adjustment probe spacing, repeats scanning；
Determine that defect is long according to time in scanning twice of upper diffraction endpoint and lower diffraction endpoint diffracted signal and probe spacing
Degree and defect width.
3. difference detection method when the ultrasonic diffraction of straight tube as claimed in claim 2 and elbow banjo fixing butt jointing, which is characterized in that institute
State time according to upper diffraction endpoint and lower diffraction endpoint diffracted signal in scanning twice and away from the horizontal distance of transmitting probe
It determines defect length and defect width includes:
Determine defect upper extreme point away from scanning face according to time of the upper diffraction endpoint diffracted signal in scanning twice and probe spacing
Depth and horizontal distance away from transmitting probe；
Determine defect lower extreme point away from scanning face according to time of the lower diffraction endpoint diffracted signal in scanning twice and probe spacing
Depth and horizontal distance away from transmitting probe.
4. difference detection method when the ultrasonic diffraction of straight tube as claimed in claim 3 and elbow banjo fixing butt jointing, which is characterized in that institute
It states the time according to upper diffraction endpoint diffracted signal in scanning twice and probe spacing determines defect upper extreme point away from scanning face
The formula of depth and the horizontal distance away from transmitting probe are as follows:
Wherein, c is the longitudinal wave velocity in material, tUpper 1For time of the upper diffraction endpoint diffracted signal in first time scanning, tUpper 2For
Time of the upper diffraction endpoint diffracted signal in second of scanning, PCS1 are initial probe spacing, and PCS2 is between popping one's head in after adjusting
Away from；
Depth h of the defect upper extreme point away from scanning face is obtained according to formula (1) and formula (2)1And the horizontal distance away from transmitting probe
x1, also, h1< 0, x1> 0；
Time according to lower diffraction endpoint diffracted signal in scanning twice and probe spacing determine defect lower extreme point away from sweeping
Look into the depth in face and the formula of the horizontal distance away from transmitting probe are as follows:
Wherein, c is the longitudinal wave velocity in material, tLower 1For time of the lower diffraction endpoint diffracted signal in first time scanning, tLower 2For
Time of the lower diffraction endpoint diffracted signal in second of scanning, PCS1 are initial probe spacing, and PCS2 is between popping one's head in after adjusting
Away from；
Depth h of the defect lower extreme point away from scanning face is obtained according to formula (3) and formula (4)2And the horizontal distance away from transmitting probe
x2, also, h2< 0, x2> 0；
Depth h according to defect upper extreme point away from scanning face1And depth h of the defect lower extreme point away from scanning face2Obtain the public affairs of defect length
Formula are as follows:
H=| h1-h2| (5)
Horizontal distance x according to defect upper extreme point away from transmitting probe1And horizontal distance x of the defect lower extreme point away from transmitting probe2It obtains
The formula of defect width are as follows:
W=| x1-x2| (6)。
5. difference detection method when the ultrasonic diffraction of straight tube as described in claim 1 and elbow banjo fixing butt jointing, which is characterized in that institute
It states and includes: away from the distance of axis of a weld according to the acoustic beam central of the determining probe spacing of preset condition and transmitting probe
The probe determined according to the half-angle of spread of weld width, thickness of workpiece, the half-angle of spread of transmitting probe and receiving transducer
The distance of spacing and transmitting probe away from axis of a weld.
6. difference detection method when the ultrasonic diffraction of straight tube as claimed in claim 2 and elbow banjo fixing butt jointing, which is characterized in that institute
It states and transmitting probe and receiving transducer is placed in weld seam the same side, after progress scanning further include:
Interpretation is carried out to scanning result, defect image is shown if not finding, completes to scan.
7. difference detection method when the ultrasonic diffraction of straight tube as claimed in claim 6 and elbow banjo fixing butt jointing, which is characterized in that institute
Adjustment probe spacing is stated, repeating scanning includes:
To scanning result carry out interpretation, if discovery defect image show, by the spacing of transmitting probe and receiving transducer hiding greatly or
Default adjustment distance is reduced, the spacing that makes initially to pop one's head in becomes spacing of popping one's head in after adjusting, and repeats a scanning.
8. difference detection method when the ultrasonic diffraction of straight tube as claimed in claim 7 and elbow banjo fixing butt jointing, it is characterised in that: institute
Default adjustment distance is stated as the 8%-12% of initial probe spacing.
9. difference detection method when the ultrasonic diffraction of straight tube as claimed in claim 8 and elbow banjo fixing butt jointing, it is characterised in that: institute
Default adjustment distance is stated as the 10% of initial probe spacing.
10. difference detection method when the ultrasonic diffraction of straight tube as described in claim 1 and elbow banjo fixing butt jointing, which is characterized in that
Described that transmitting probe and receiving transducer are placed in weld seam the same side, carrying out scanning includes:
Transmitting probe and receiving transducer are mounted on scanning frame respectively, and are connected respectively with test host；
Scanning frame is placed on base material to be checked according to transmitting probe away from the distance value of axis of a weld；
Starting test host, adjusts separately the velocity of sound, time window, signal gain, encoder step parameter, sweeps to weld seam
It looks into.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811122411.2A CN109239197A (en) | 2018-09-26 | 2018-09-26 | The difference detection method when ultrasonic diffraction of straight tube and elbow banjo fixing butt jointing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811122411.2A CN109239197A (en) | 2018-09-26 | 2018-09-26 | The difference detection method when ultrasonic diffraction of straight tube and elbow banjo fixing butt jointing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109239197A true CN109239197A (en) | 2019-01-18 |
Family
ID=65056150
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811122411.2A Pending CN109239197A (en) | 2018-09-26 | 2018-09-26 | The difference detection method when ultrasonic diffraction of straight tube and elbow banjo fixing butt jointing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109239197A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110554089A (en) * | 2019-09-09 | 2019-12-10 | 西安特种设备检验检测院 | Method, device, equipment and storage medium for detecting welding joint |
| CN110568071A (en) * | 2019-09-09 | 2019-12-13 | 西安特种设备检验检测院 | Method, device, equipment and storage medium for detecting welding joint |
| CN110568070A (en) * | 2019-09-09 | 2019-12-13 | 西安特种设备检验检测院 | Method, device, equipment and storage medium for detecting welding joint |
| CN110988132A (en) * | 2019-12-20 | 2020-04-10 | 中国化学工程第三建设有限公司 | Welding seam single-side TOFD detection method |
| CN112578023A (en) * | 2019-09-29 | 2021-03-30 | 中电华创(苏州)电力技术研究有限公司 | Ultrasonic time difference diffraction detection system and method |
| CN114062489A (en) * | 2020-08-06 | 2022-02-18 | 宝山钢铁股份有限公司 | A graded monitoring method for the crack depth of the roll neck of a levelling roll |
| CN115479991A (en) * | 2022-09-30 | 2022-12-16 | 大连理工大学 | Ultrasonic TOFD detection method for structural defects of spherical seal head |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102507734A (en) * | 2011-10-26 | 2012-06-20 | 河北省电力建设调整试验所 | Ultrasonic time-of-flight diffraction (TOFD) detection method for weld seam |
-
2018
- 2018-09-26 CN CN201811122411.2A patent/CN109239197A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102507734A (en) * | 2011-10-26 | 2012-06-20 | 河北省电力建设调整试验所 | Ultrasonic time-of-flight diffraction (TOFD) detection method for weld seam |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110554089A (en) * | 2019-09-09 | 2019-12-10 | 西安特种设备检验检测院 | Method, device, equipment and storage medium for detecting welding joint |
| CN110568071A (en) * | 2019-09-09 | 2019-12-13 | 西安特种设备检验检测院 | Method, device, equipment and storage medium for detecting welding joint |
| CN110568070A (en) * | 2019-09-09 | 2019-12-13 | 西安特种设备检验检测院 | Method, device, equipment and storage medium for detecting welding joint |
| CN110568071B (en) * | 2019-09-09 | 2021-11-02 | 西安特种设备检验检测院 | Method, device, equipment and storage medium for detecting welding joint |
| CN110554089B (en) * | 2019-09-09 | 2022-04-01 | 西安特种设备检验检测院 | Method, device, equipment and storage medium for detecting welding joint |
| CN112578023A (en) * | 2019-09-29 | 2021-03-30 | 中电华创(苏州)电力技术研究有限公司 | Ultrasonic time difference diffraction detection system and method |
| CN110988132A (en) * | 2019-12-20 | 2020-04-10 | 中国化学工程第三建设有限公司 | Welding seam single-side TOFD detection method |
| CN114062489A (en) * | 2020-08-06 | 2022-02-18 | 宝山钢铁股份有限公司 | A graded monitoring method for the crack depth of the roll neck of a levelling roll |
| CN115479991A (en) * | 2022-09-30 | 2022-12-16 | 大连理工大学 | Ultrasonic TOFD detection method for structural defects of spherical seal head |
| CN115479991B (en) * | 2022-09-30 | 2024-05-14 | 大连理工大学 | Ultrasonic TOFD detection method for spherical head structural defect |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109239197A (en) | The difference detection method when ultrasonic diffraction of straight tube and elbow banjo fixing butt jointing | |
| JP4910768B2 (en) | Calibration method of ultrasonic flaw detection, tube quality control method and manufacturing method | |
| JP4910770B2 (en) | Tubular ultrasonic inspection apparatus and ultrasonic inspection method | |
| CN110007003B (en) | Partitioning method for ultrasonic detection of sound velocity non-uniform metal thick plate welding line phased array | |
| JP5535044B2 (en) | Circuit device for ultrasonic nondestructive testing of subjects | |
| CN103969341B (en) | The extraordinary probe of Austenitic stainless steel pipe butt girth welding seam ultrasound examination | |
| CN102507734A (en) | Ultrasonic time-of-flight diffraction (TOFD) detection method for weld seam | |
| CN102914592B (en) | Ultrasonic detection imaging method of diffusion welding connecting interface in tubular compound piece | |
| WO2007058391A1 (en) | Pipe ultrasonic flaw detecting apparatus and ultrasonic flaw detecting method | |
| CN207020131U (en) | Thin-walled tube girth joint phased array ultrasonic detection reference block | |
| CN107870202A (en) | A kind of detection method of cable connector internal flaw | |
| CN106290583A (en) | A kind of ultrasonic phase array detection Small-diameter Tube Seams Special test block | |
| CN110988139A (en) | Phased array ultrasonic detection method for welding buoy base plate and sampan | |
| US5524627A (en) | Ultrasonic imaging system | |
| CN102967654A (en) | Ultrasonic flaw detection method of surfacing steel pipe from base material side | |
| US6125704A (en) | Ultrasonic technique for inspection of weld and heat-affected zone for localized high temperature hydrogen attack | |
| CN108415020A (en) | A kind of improved time-domain ultrasonic signal synthetic aperture algorithm | |
| CN103901104B (en) | TOFD (time of fight diffraction) detection method and TOFD detection system for docking ring welding seams of cylinder | |
| CN113834874B (en) | Method for simulating and analyzing joint fillet weld defects based on CIVA | |
| CN108226292B (en) | Defect detection method, device, storage medium and processor for T-shaped joint weld | |
| CN103487509A (en) | Ultrasonic manual longitudinal-longitudinal-longitudinal wave detection method | |
| CN112924557B (en) | Weld seam full-focus probe device and detection method based on direct longitudinal wave and double-line array | |
| CN105353039A (en) | Phased array longitudinal wave testing method of butt weld joints | |
| CN113884035A (en) | Ultrasonic detection system and detection method for thick-walled pipes | |
| CN108663434A (en) | A kind of coarse grain material total focus detection method of phased array supersonic defectoscope |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190118 |
|
| RJ01 | Rejection of invention patent application after publication |