CN104698081A - Ultrasonic flaw detection method for interference bolt of engine drive gear - Google Patents
Ultrasonic flaw detection method for interference bolt of engine drive gear Download PDFInfo
- Publication number
- CN104698081A CN104698081A CN201310684071.3A CN201310684071A CN104698081A CN 104698081 A CN104698081 A CN 104698081A CN 201310684071 A CN201310684071 A CN 201310684071A CN 104698081 A CN104698081 A CN 104698081A
- Authority
- CN
- China
- Prior art keywords
- scanning
- contrast specimen
- probe
- detection method
- flaw detection
- 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.)
- Granted
Links
Landscapes
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The invention discloses an ultrasonic flaw detection method for an interference bolt of an engine drive gear. The method comprises the steps of manufacturing a contrast test piece, clamping the contrast test piece, carrying out calibration by a point focusing probe, determining the detection distance, programming a scanning program, scanning the contrast test piece, carrying out calibration on the scanning program, clamping a part to be detected, scanning the part to be detected and recording the scanning result. According to the method, the bolt is scanned by utilizing incident transverse wave, and the detection is completed under the condition that disassembly is not carried out, so that the method is simple, convenient, accurate and efficient; the method is realized by the 5MHz focusing probe which is not sharp; no related abnormal wave is displayed in the detection area, so that the detection accuracy is effectively improved, and misjudgement is avoided; automatic detection is realized by programming the scanning program, so that the accuracy reduction caused by human factor can be reduced; the detection results are visual, so that defects can be easily judged and located; the detection image can be stored for a long time for rechecking.
Description
Technical field
The present invention relates to engine components crack detection technical field, be specifically related to a kind of driving engine gear interference bolt ultrasonic flaw detection method.
Background technology
Interference bolt on connecting engine transmission gear, condition of work is severe, easily there is fracture defect, fracture location is positioned at the polished rod position of bolt, and due to this bolt, to be that interference fit causes non-dismountable, how to carry out in situ detection to worked bolt, be the important means ensureing this gear Subsequent secure work.Little and the complex structure of common bolt, when single-piece detects, can adopt magnetic powder detection method, but magnetic powder detection method is helpless on subassembly.The unique method in the cards of in situ detection is exactly ultrasound examination, but when ultrasound examination, general ultrasonic probe is difficult to realize, even if choose special probe once in a while, because display is not directly perceived, interference noise and defect waves is distinguished very difficult, causes a lot of erroneous judgements.Water seaoning focusing probe is as shown in Figure 1 selected to detect, by common vertical incidence scanning, because acoustic beam is not dispersed, the defect of acoustic beam incidence position can only be detected, namely the defect in relief groove diameter range, and the defect that bolt shank is greater than relief groove diameter range cannot detect.
Summary of the invention
The object of the invention is to: a kind of driving engine gear interference bolt ultrasonic flaw detection method is provided, with to solve in conventional ultrasound wave detecting method existing acoustic beam and disperse, problem that the low and interference noise of accuracy of detection and defect waves distinguish difficulty.
The object of the invention is to realize by following technical solution:
A kind of driving engine gear interference bolt ultrasonic flaw detection method, the method comprises the following steps:
(1) contrast specimen is made: make 6 contrast specimen measure-alike with tested bolt design of part, getting wherein 3 contrast specimen is A group, and remaining 3 is B group; The face of cylinder B of each contrast specimen all engraves an artificial defect groove;
(2) contrast specimen clamping: A, B two groups of group contrast specimen are respectively charged into transmission gear, then by transmission gear clamping on the turntable of water logging ultrasonic equipment;
(3) point focusing probe calibration: point focusing probe is vertically moved on to one of them top of A group contrast specimen, water distance is adjusted to the focal length of probe, makes probe focus drop on contrast specimen surface;
(4) detecting distance is determined: point focusing probe axial deflection angle [alpha] moved radially along deflection plane, when water is apart from when changing, obtains a radial moving distance value L;
(5) work out scanning program: according to moving distance value L, starting point a and the terminating point b of detection can be determined; Arrange gate scope, gate scope control is in the scope that need detect face of cylinder B; Adjustment yield value, making the artificial defect wave height on contrast specimen minimum is 80%, arranges radial and rotates scanning step distance;
(6) contrast specimen scanning: 6 contrast specimen are carried out scanning by scanning program one by one that work out by step (5);
(7) scanning programmed calibration: after all contrast specimen scannings, observes the artificial defect display on scintigram; Then adjust probe deflection angle, repeat step (4), (5), until obtain the artificial defect display on the scintigram of complete display;
(8) parts fixation to be measured: take off the transmission gear that contrast specimen is housed, by part to be measured, is namely equipped with the transmission gear clamping of interference bolt on the turntable of water logging ultrasonic equipment;
(9) part scanning to be measured: the scanning program of calibrating by step (7) carries out ultrasonic scanning to part to be measured;
(10) record scanning result and complete detection.
The artificial defect groove depth in described step (1), A group contrast specimen scribed is the artificial defect groove depth that 0.5mm, B group contrast specimen is scribed is 1mm.
The artificial defect slot of scribing in described step (1) is in the middle part of contrast specimen face of cylinder B or apart from end face 1 ~ 5mm place.
The point focusing probe adopted in described step (3) is the probe of model IS0519GB frequency 2.5 ~ 7.5MHz.
In described step (4), point focusing probe axial deflection angle [alpha] is 2.5 ~ 5 °.
In described step (5), adjustment ultrasound wave yield value makes artificial defect wave height >=80% on contrast specimen.
Radial in described step (5) is 0.1mm with rotating scanning step distance.
The invention has the beneficial effects as follows:
Compared with prior art, driving engine gear interference bolt ultrasonic flaw detection method provided by the invention, utilizing incident shear wave to carry out scanning to bolt, can complete detection when not splitting, simple and convenient, precise and high efficiency; And probe is selected not harsh, 5MHz focusing probe can realize; Show without uncorrelated X-wave in surveyed area, effectively can improve accuracy of detection, avoid erroneous judgement; Automatic detection can be realized by establishment scanning program, reduce the precision reduction that human factor causes; Testing result is intuitively easy to differentiation and the location of defect; Detected image can be preserved for a long time, in order to check.
Accompanying drawing explanation
Fig. 1 is traditional vertical incidence ultrasound examination schematic diagram;
Fig. 2 is ultrasound examination process schematic in the present invention;
Fig. 3 is the scheme of installation of part to be measured in the present invention;
In figure: 1-bolt to be measured, 2-transmission gear, 3-turntable claw, 4-turntable, 5-artificial defect groove.
Embodiment
Below in conjunction with drawings and Examples, technical scheme of the present invention is described further, but described in required protection domain is not limited to;
By detection method provided by the invention for detecting the interference bolt on certain driving engine gear, the diameter of this interference bolt circle cylinder B is φ 8.5mm, and the length of face of cylinder B is 14mm.
Embodiment 1: make 6 contrast specimen according to the physical dimension of tested bolt part; Getting wherein 3 contrast specimen is A group, and remaining 3 is B group; The face of cylinder B of each contrast specimen all engraves an artificial defect groove, the dark 1mm of the cutting of A group dark 0.5mm, B group cutting, be engraved on the face of cylinder B of 6 contrast specimen respectively, position chooses the middle part of face of cylinder B respectively.Contrast specimen is loaded transmitting gear 2, then by turntable claw 3 by transmitting gear 2 clamping on the turntable 4 of water logging ultrasonic equipment; 5MHz point focusing probe vertically to be moved on in the A group contrast specimen being carved with the cutting of 0.5mm artificial defect the top of any one, water, apart from the focal length being adjusted to probe, makes probe focus drop on piece surface.By probe deflection 3 °, move radially point focusing probe along deflection plane, when water is apart from when changing, record a radial moving distance value L=12mm; According to moving distance value L, starting point and ending point position a, b of detecting can be determined; Then arrange gate scope, gate scope control is in the scope that need detect face of cylinder B; Adjustment yield value, makes the artificial defect wave height in test block be 80%, arranges radial direction and rotate scanning stepping to be 0.1mm; Carry out scanning, obtain the artificial defect display on the scintigram of complete display.Take off the transmission gear 2 that contrast specimen is housed, also clamping is on the turntable 4 of water logging ultrasonic equipment bolt 1 to be measured to be loaded transmission gear 2, and starting outfit carries out scanning, and record testing result, detects and terminate.
Embodiment 2: make 6 contrast specimen according to the physical dimension of tested bolt part; Getting wherein 3 contrast specimen is A group, and remaining 3 is B group; The face of cylinder B of each contrast specimen all engraves an artificial defect groove, the dark 1mm of the cutting of A group dark 0.5mm, B group cutting, be engraved on the face of cylinder B of 6 contrast specimen respectively, position chooses the middle part of face of cylinder B respectively.Contrast specimen is loaded transmitting gear 2, then by turntable claw 3 by transmitting gear 2 clamping on the turntable 4 of water logging ultrasonic equipment; 2.5MHz point focusing probe vertically to be moved on in the A group contrast specimen being carved with the cutting of 0.5mm artificial defect the top of any one, water, apart from the focal length being adjusted to probe, makes probe focus drop on piece surface.By probe deflection 4 °, move radially point focusing probe along deflection plane, when water is apart from when changing, record a radial moving distance value L=13mm; According to moving distance value L, starting point and ending point position a, b of detecting can be determined; Then arrange gate scope, gate scope control is in the scope that need detect face of cylinder B; Adjustment yield value, makes the artificial defect wave height in test block be 90%, arranges radial direction and rotate scanning stepping to be 0.1mm; Carry out scanning, obtain the artificial defect display on the scintigram of complete display.Take off the transmission gear 2 that contrast specimen is housed, also clamping is on the turntable 4 of water logging ultrasonic equipment bolt 1 to be measured to be loaded transmission gear 2, and starting outfit carries out scanning, and record testing result, detects and terminate.
Embodiment 3: make 6 contrast specimen according to the physical dimension of tested bolt part; Getting wherein 3 contrast specimen is A group, and remaining 3 is B group; The face of cylinder B of each contrast specimen all engraves an artificial defect groove, the dark 1mm of the cutting of A group dark 0.5mm, B group cutting, be engraved on the face of cylinder B of 6 contrast specimen respectively, position chooses the middle part of face of cylinder B respectively.Contrast specimen is loaded transmitting gear 2, then by turntable claw 3 by transmitting gear 2 clamping on the turntable 4 of water logging ultrasonic equipment; 7.5MHz point focusing probe vertically to be moved on in the A group contrast specimen being carved with the cutting of 0.5mm artificial defect the top of any one, water, apart from the focal length being adjusted to probe, makes probe focus drop on piece surface.By probe deflection 5 °, move radially point focusing probe along deflection plane, when water is apart from when changing, record a radial moving distance value L=14mm; According to moving distance value L, starting point and ending point position a, b of detecting can be determined; Then arrange gate scope, gate scope control is in the scope that need detect face of cylinder B; Adjustment yield value, makes the artificial defect wave height in test block be 86%, arranges radial direction and rotate scanning stepping to be 0.1mm; Carry out scanning, obtain the artificial defect display on the scintigram of complete display.Take off the transmission gear 2 that contrast specimen is housed, also clamping is on the turntable 4 of water logging ultrasonic equipment bolt 1 to be measured to be loaded transmission gear 2, and starting outfit carries out scanning, and record testing result, detects and terminate.
Claims (7)
1. a driving engine gear interference bolt ultrasonic flaw detection method, is characterized in that: the method comprises the following steps:
(1) contrast specimen is made: make 6 contrast specimen measure-alike with tested bolt design of part, getting wherein 3 contrast specimen is A group, and remaining 3 is B group; The face of cylinder B of each contrast specimen all engraves an artificial defect groove;
(2) contrast specimen clamping: A, B two groups of group contrast specimen are respectively charged into transmission gear, then by transmission gear clamping on the turntable of water logging ultrasonic equipment;
(3) point focusing probe calibration: point focusing probe is vertically moved on to one of them top of A group contrast specimen, water distance is adjusted to the focal length of probe, makes probe focus drop on contrast specimen surface;
(4) detecting distance is determined: point focusing probe axial deflection angle [alpha] moved radially along deflection plane, when water is apart from when changing, obtains a radial moving distance value L;
(5) work out scanning program: according to moving distance value L, starting point a and the terminating point b of detection can be determined; Arrange gate scope, gate scope control is in the scope that need detect face of cylinder B; Adjust ultrasound wave yield value, radial direction is set and rotates scanning step distance;
(6) contrast specimen scanning: 6 contrast specimen are carried out scanning by scanning program one by one that work out by step (5);
(7) scanning programmed calibration: after all contrast specimen scannings, observes the artificial defect display on scintigram; Then adjust probe deflection angle, repeat step (4), (5), until obtain the artificial defect display on the scintigram of complete display;
(8) parts fixation to be measured: take off the transmission gear that contrast specimen is housed, by part to be measured, is namely equipped with the transmission gear clamping of interference bolt on the turntable of water logging ultrasonic equipment;
(9) part scanning to be measured: the scanning program of calibrating by step (7) carries out ultrasonic scanning to part to be measured;
(10) record scanning result and complete detection.
2. driving engine gear interference bolt ultrasonic flaw detection method according to claim 1, it is characterized in that: the artificial defect groove depth in described step (1), A group contrast specimen scribed is the artificial defect groove depth that 0.5mm, B group contrast specimen is scribed is 1mm.
3. driving engine gear interference bolt ultrasonic flaw detection method according to claim 1, is characterized in that: the artificial defect slot of scribing in described step (1) is in the middle part of contrast specimen face of cylinder B or apart from end face 1 ~ 5mm place.
4. driving engine gear interference bolt ultrasonic flaw detection method according to claim 1, is characterized in that: the point focusing probe adopted in described step (3) is the probe of model IS0519GB frequency 2.5 ~ 7.5MHz.
5. driving engine gear interference bolt ultrasonic flaw detection method according to claim 1, is characterized in that: in described step (4), point focusing probe axial deflection angle [alpha] is 2.5 ~ 5 °.
6. driving engine gear interference bolt ultrasonic flaw detection method according to claim 1, is characterized in that: in described step (5), adjustment ultrasound wave yield value makes artificial defect wave height >=80% on contrast specimen.
7. driving engine gear interference bolt ultrasonic flaw detection method according to claim 1, is characterized in that: radial in described step (5) is 0.1mm with rotating scanning step distance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310684071.3A CN104698081B (en) | 2013-12-10 | 2013-12-10 | A kind of driving engine gear interference bolt ultrasonic flaw detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310684071.3A CN104698081B (en) | 2013-12-10 | 2013-12-10 | A kind of driving engine gear interference bolt ultrasonic flaw detection method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104698081A true CN104698081A (en) | 2015-06-10 |
| CN104698081B CN104698081B (en) | 2018-01-23 |
Family
ID=53345426
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310684071.3A Active CN104698081B (en) | 2013-12-10 | 2013-12-10 | A kind of driving engine gear interference bolt ultrasonic flaw detection method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104698081B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105277626A (en) * | 2015-11-09 | 2016-01-27 | 成都发动机（集团）有限公司 | Simulation standard part for water-logging ultrasonic C scanning detection of turbine case electron beam welds |
| CN114858920A (en) * | 2022-05-17 | 2022-08-05 | 东方电气集团东方电机有限公司 | Ultrasonic-based generator end tooth root crack identification method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1136663A (en) * | 1995-05-19 | 1996-11-27 | 中国科学院声学研究所 | Reflectoscope and method for gear weld seam |
| CN2528012Y (en) * | 2001-09-10 | 2002-12-25 | 范洪斌 | Supersonic automatic flaw detector for testing diesel engine gas valve and connecting rod bolt |
| CN1447115A (en) * | 2002-03-25 | 2003-10-08 | 中国科学院金属研究所 | Non-contact type water soaked ultrasonic detection method and apparatus for detecting cracks in pumping rods |
| CN101419194A (en) * | 2008-12-04 | 2009-04-29 | 北京航空航天大学 | Device for detecting section tube damage by water immersion transverse wave method and damage detecting method thereof |
| CN102095799A (en) * | 2010-12-21 | 2011-06-15 | 东北轻合金有限责任公司 | Method for detecting defect of 7 series aluminium alloy forge piece by ultrasonic testing with immersion type probe |
| CN202870041U (en) * | 2011-11-28 | 2013-04-10 | 广东电网公司电力科学研究院 | Ultrasound C/A scanning imaging device for small diameter tubes |
-
2013
- 2013-12-10 CN CN201310684071.3A patent/CN104698081B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1136663A (en) * | 1995-05-19 | 1996-11-27 | 中国科学院声学研究所 | Reflectoscope and method for gear weld seam |
| CN2528012Y (en) * | 2001-09-10 | 2002-12-25 | 范洪斌 | Supersonic automatic flaw detector for testing diesel engine gas valve and connecting rod bolt |
| CN1447115A (en) * | 2002-03-25 | 2003-10-08 | 中国科学院金属研究所 | Non-contact type water soaked ultrasonic detection method and apparatus for detecting cracks in pumping rods |
| CN101419194A (en) * | 2008-12-04 | 2009-04-29 | 北京航空航天大学 | Device for detecting section tube damage by water immersion transverse wave method and damage detecting method thereof |
| CN102095799A (en) * | 2010-12-21 | 2011-06-15 | 东北轻合金有限责任公司 | Method for detecting defect of 7 series aluminium alloy forge piece by ultrasonic testing with immersion type probe |
| CN202870041U (en) * | 2011-11-28 | 2013-04-10 | 广东电网公司电力科学研究院 | Ultrasound C/A scanning imaging device for small diameter tubes |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105277626A (en) * | 2015-11-09 | 2016-01-27 | 成都发动机（集团）有限公司 | Simulation standard part for water-logging ultrasonic C scanning detection of turbine case electron beam welds |
| CN114858920A (en) * | 2022-05-17 | 2022-08-05 | 东方电气集团东方电机有限公司 | Ultrasonic-based generator end tooth root crack identification method |
| CN114858920B (en) * | 2022-05-17 | 2023-06-30 | 东方电气集团东方电机有限公司 | Ultrasonic-based generator end part root crack identification method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104698081B (en) | 2018-01-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8453509B2 (en) | Method for the non-destructive testing of a test object by way of ultrasound and apparatus therefor | |
| CN104345092A (en) | Scanning type laser ultrasonic detection method and system | |
| CN103529128B (en) | A kind of fatigue crack on-line detecting system and detection method | |
| CN103336055B (en) | Method for ultrasonically detecting weld quality of main loop pipeline of nuclear power plant by phased array | |
| CN111122702B (en) | Water immersion ultrasonic detection method for internal defects of aviation bearing ring forge piece | |
| US20120024067A1 (en) | Method for the non-destructive testing of a test object by way of ultrasound and corresponding device | |
| WO2009087004A1 (en) | Method for the non-destructive testing of a test object by way of ultrasound and apparatus therefor | |
| CN104280459A (en) | Ultrasonic wave phased array testing method for internal defect at bent axle R | |
| CN102539532B (en) | Ultrasonic C scanning imaging method based on two-dimensional neighborhood synthetic aperture focusing | |
| CN104155367A (en) | Reference block of ultrasonic flaw detection and application method thereof | |
| CN105973177B (en) | A kind of lossless detection method and PCB lossless detection method of back drill stub | |
| CN105445374A (en) | Ultrasonic phased array detection method for fir type blade roots of nuclear main turbine | |
| CN110625166B (en) | Numerical control nondestructive testing method for hob holder of heading machine | |
| CN104007181A (en) | Single crystal silicon rod defect ultrasonic-detection system and method | |
| CN105510441A (en) | Linkage detection method adopting multi-channel combined probes | |
| CN104634876A (en) | Method for detecting inclusions in metal material by virtue of ultrasonic scanning microscope | |
| CN104374825A (en) | Device and method for automatically detecting ultrasonic phased array of gas storage well | |
| CN111610256A (en) | Method for detecting surface blind area defects of bar by using ultrasonic water immersion flaw detection system | |
| CN106556645A (en) | A kind of ultrasonic synthetic aperture focusing detection means of solid shafting and imaging method | |
| CN108956775A (en) | A kind of high-sensitivity ultrasonic detection method of engine complex profile bearing part | |
| US9921186B2 (en) | Method and device for the non-destructive inspection of a rotationally symmetric workpiece having sections with difference diameters | |
| CN103675098A (en) | Ultrasonic flaw detection method of cracks of connecting rod pin of locomotive wheel set | |
| CN104698081A (en) | Ultrasonic flaw detection method for interference bolt of engine drive gear | |
| CN104849351A (en) | Surface acoustic impedance detection method and system based on non-contact air coupling | |
| CN105510442A (en) | Dynamic linkage focus detection method adopting multiple phased array probes |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 550014 No. 1111 Liyang Road, Baiyun District, Guiyang City, Guizhou Province Patentee after: Chinese Hangfa Guizhou Liyang aero Power Co. Ltd. Address before: 561102 Science and Technology Management Department of 5 Mailbox in Pingba County, Guizhou Province Patentee before: Guizhou Liyang Aerospace Power Co., Ltd. |