CN101458229A - Phi 20mm-phi 38mm aluminum alloy thin walled pipe eddy current inspection method - Google Patents
Phi 20mm-phi 38mm aluminum alloy thin walled pipe eddy current inspection method Download PDFInfo
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- CN101458229A CN101458229A CNA2008102098579A CN200810209857A CN101458229A CN 101458229 A CN101458229 A CN 101458229A CN A2008102098579 A CNA2008102098579 A CN A2008102098579A CN 200810209857 A CN200810209857 A CN 200810209857A CN 101458229 A CN101458229 A CN 101458229A
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Abstract
The invention discloses a phi 20mm-phi 38mm aluminum alloy thin-wall tube eddy current test method, and relates to an aluminum alloy thin-wall tube eddy current test method. The method solves the problem that the existing aluminum alloy thin-wall tube eddy current test method is not available for the non-destructive test of large-sized aluminum alloy thin-wall tubes. The method comprises the followings steps: step 1: selecting an eddy current defect detector; step 2: fabricating and commissioning an eddy current probe; step 3: selecting control sample tubes: intercepting tubes with the length not more than 2000mm from the non-defective aluminum alloy thin-wall tubes having the same specification, the same alloy and the same batch as the control sample tubes; step 4: fabricating through holes for manual defect inspection: sequentially arranging three groups of through holes for the manual defect inspection which are da, db and dc, from top to bottom along the axial direction of the control sample tubes; and step 5: commisioning the eddy current defect detector. The method realizes automatic eddy current test of the large-sized aluminum alloy thin-wall tubes, reaches good detection effects by visual inspection and eddy current defect detection comparison tests in the production field, and meets the quality requirements of fuel oil system conduits and aluminum alloy thin-wall tubes which are taken as national defense military supplies.
Description
Technical field
The present invention relates to a kind of aluminum alloy thin walled pipe eddy current inspection method.
Background technology
Summary of the invention
The objective of the invention is to carry out the problem of Non-Destructive Testing to the aluminum alloy thin walled pipe of big specification, and then provide a kind of in order to solve existing aluminum alloy thin walled pipe eddy current inspection method
Aluminum alloy thin walled pipe eddy current inspection method.
Of the present invention
The step of aluminum alloy thin walled pipe eddy current inspection method is:
Step 1: select eddy current flaw detec;
Step 2: make and the debugging eddy current probe;
Step 3: the selection of control sample pipe: same specification, with alloy and with batch the zero defect aluminum alloy thin walled pipe on intercepting≤2000mm grow coupon as a comparison;
Step 4: the making of people's industrial injury through hole: axially offer da, db and three groups of people's industrial injuries of dc through hole from top to bottom successively along the control sample pipe, distance in described three groups every group between adjacent two people's industrial injury through holes is 150mm ± 10mm, every group of people's industrial injury through hole is three holes, and three holes of every group of people's industrial injury through hole are along circumferential 120 ° ± 5 ° arrangements of control sample pipe;
Step 5: debugging eddy current flaw detec: the probe of 1. the control sample pipe being put into eddy current flaw detec, eddy current flaw detec is carried out the balance adjustment, 2. the fixedly inspection speed of eddy current flaw detec and frequency filtering, adjust the flaw detection phase place, debug out best flaw detection signal to noise ratio (S/N ratio) with the control sample pipe: make three people's industrial injury through holes of dc group high-visible, three people's industrial injury through hole flaw detection signal to noise ratio (S/N ratio)s that make the da group are greater than 3,3. fixing flaw detection phase place, adjust inspection speed and frequency filtering, debug out best flaw detection signal to noise ratio (S/N ratio) with the control sample pipe: make three people's industrial injury through holes of dc group high-visible, three people's industrial injury through hole flaw detection signal to noise ratio (S/N ratio)s that make the da group are greater than 3,4. adjust the warning storage battery of eddy current flaw detec, three people's industrial injury through holes of da group are just all reported to the police, three people's industrial injury through holes of dc group are not reported to the police entirely, 5. the mark time-delay according to inspection speed adjustment eddy current flaw detec is just in time beaten on defective the mark position, and the time delayed signal end to end of 6. adjusting eddy current flaw detec is not just reported to the police the signal end to end of control sample pipe.
The present invention compared with prior art has following beneficial effect: the present invention is by setting the debugging of defect-detecting equipment, instrument parameter, the selection of different size probe parameter, making and people's industrial injury of different size control sample pipe, realized than the automatic eddy current test of large-size aluminum alloy thin walled tube, through production scene visual check and eddy current test contrast test, reach good detection effect, satisfied fuel system conduit and national defence military products aluminum alloy thin walled pipe quality requirements.Tubing after the visual check is again through the testing result such as the table 1 of eddy current test:
Table 1
Embodiment
Embodiment one: present embodiment is finished by following steps:
Step 1: select eddy current flaw detec;
Step 2: make and the debugging eddy current probe;
Step 3: the selection of control sample pipe: same specification, with alloy and with batch the zero defect aluminum alloy thin walled pipe on intercepting≤2000mm long tube material coupon as a comparison;
Step 4: the making of people's industrial injury through hole: axially offer da, db and three groups of people's industrial injuries of dc through hole from top to bottom successively along the control sample pipe, distance in every group between adjacent two people's industrial injury through holes is 150mm ± 10mm, every group of people's industrial injury through hole is three holes, and three holes of people's industrial injury through hole are along circumferential 120 ° ± 5 ° arrangements of control sample pipe in described every group;
Step 5: debugging eddy current flaw detec: the probe of 1. the control sample pipe being put into eddy current flaw detec, eddy current flaw detec is carried out the balance adjustment, 2. the fixedly inspection speed of eddy current flaw detec and frequency filtering, adjust the flaw detection phase place, debug out best flaw detection signal to noise ratio (S/N ratio) with the control sample pipe: make three people's industrial injury through holes of dc group high-visible, three people's industrial injury through hole flaw detection signal to noise ratio (S/N ratio)s that make the da group are greater than 3,3. fixing flaw detection phase place, adjust inspection speed and frequency filtering, debug out best flaw detection signal to noise ratio (S/N ratio) with the control sample pipe: make three people's industrial injury through holes of dc group high-visible, three people's industrial injury through hole flaw detection signal to noise ratio (S/N ratio)s that make the da group are greater than 3,4. adjust the warning storage battery of eddy current flaw detec, three people's industrial injury through holes of da group are just all reported to the police, three people's industrial injury through holes of db group are not reported to the police entirely, 5. the mark time-delay according to inspection speed adjustment eddy current flaw detec is just in time beaten on defective the mark position, and the time delayed signal end to end of 6. adjusting eddy current flaw detec is not reported to the police the signal end to end of control sample pipe.
Making parameter and the tuning parameter such as the table 2 of the eddy current probe of the different size of present embodiment:
Table 2
| Sequence number | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| Probe internal diameter (mm) | 20.6 | 22.6 | 24.6 | 26.6 | 28.6 | 30.6 | 32.6 | 34.6 | 36.6 | 38.6 |
| Measure groove depth (mm) | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Measure groove width (mm) | 1.3 | 1.3 | 1.3 | 1.3 | 1.3 | 1..5 | 1.5 | 1.5 | 1.5 | 1.5 |
| Measuring flume spacing (mm) | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Slotted line diameter (mm) | 0.05 | 0.05 | 0..05 | 0.05 | 0.05 | 0.05 | 0.05 | 0.05 | 0.05 | 0.05 |
| Measure coil turn | 320 | 320 | 320 | 320 | 320 | 340 | 340 | 340 | 340 | 340 |
| Excitation groove width (mm) | 20 | 20 | 20 | 20 | 20 | 24 | 24 | 24 | 24 | 24 |
| Excitation linear diameter (mm) | 0.33 | 0.33 | 0.33 | 0.33 | 0.33 | 0.35 | 0.35 | 0.35 | 0.35 | 0.35 |
| The drive coil number of turn | 340 | 340 | 340 | 340 | 340 | 350 | 350 | 350 | 350 | 350 |
| Zero load has the differential voltage of carrying less than (mm) | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 |
| Zero load has the differential voltage difference of carrying less than (mm) | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 |
| Activity coefficient | 0.78 | 0.80 | 0.81 | 0.83 | 0.84 | 0.85 | 0.86 | 0.86 | 0.87 | 0.88 |
The making parameter such as the table 3 of people's industrial injury through hole of the control sample pipe of the different size of present embodiment:
Table 3:
Embodiment two: the difference of present embodiment and embodiment one is: present embodiment distance between every adjacent two groups of people's industrial injury through holes in step 4 is 150mm ± 5mm.So be provided with, detect better effects if.
Claims (2)
1, a kind of
Aluminum alloy thin walled pipe eddy current inspection method is characterized in that steps of the method are:
Step 1: select eddy current flaw detec;
Step 2: make and the debugging eddy current probe;
Step 3: the selection of control sample pipe: same specification, with alloy and with batch the zero defect aluminum alloy thin walled pipe on intercepting≤2000mm grow coupon as a comparison;
Step 4: the making of people's industrial injury through hole: axially offer da, db and three groups of people's industrial injuries of dc through hole from top to bottom successively along the control sample pipe, distance in described three groups every group between adjacent two people's industrial injury through holes is 150mm ± 10mm, every group of people's industrial injury through hole is three holes, and three holes of every group of people's industrial injury through hole are along circumferential 120 ° ± 5 ° arrangements of control sample pipe;
Step 5: debugging eddy current flaw detec: the probe of 1. the control sample pipe being put into eddy current flaw detec, eddy current flaw detec is carried out the balance adjustment, 2. the fixedly inspection speed of eddy current flaw detec and frequency filtering, adjust the flaw detection phase place, debug out best flaw detection signal to noise ratio (S/N ratio) with the control sample pipe: make three people's industrial injury through holes of dc group high-visible, three people's industrial injury through hole flaw detection signal to noise ratio (S/N ratio)s that make the da group are greater than 3,3. fixing flaw detection phase place, adjust inspection speed and frequency filtering, debug out best flaw detection signal to noise ratio (S/N ratio) with the control sample pipe: make three people's industrial injury through holes of dc group high-visible, three people's industrial injury through hole flaw detection signal to noise ratio (S/N ratio)s that make the da group are greater than 3,4. adjust the warning storage battery of eddy current flaw detec, three people's industrial injury through holes of da group are just all reported to the police, three people's industrial injury through holes of dc group are not reported to the police entirely, 5. the mark time-delay according to inspection speed adjustment eddy current flaw detec is just in time beaten on defective the mark position, and the time delayed signal end to end of 6. adjusting eddy current flaw detec is not just reported to the police the signal end to end of control sample pipe.
2, according to claim 1
Aluminum alloy thin walled pipe eddy current inspection method is characterized in that: the distance in step 4 between every adjacent two groups of people's industrial injury through holes is 150mm ± 5mm.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102141541A (en) * | 2010-12-28 | 2011-08-03 | 东北轻合金有限责任公司 | Equipment and method for automatically marking defects during eddy current testing of aluminum alloy thin wall pipe |
| CN103913509A (en) * | 2014-04-19 | 2014-07-09 | 中国人民解放军第五七二一工厂 | Defect detection method of paint aluminum alloy frame plate |
| CN105699483A (en) * | 2016-03-15 | 2016-06-22 | 南昌航空大学 | Aluminum alloy plate defect detection technology achieved through array eddy current detection |
| CN108181146A (en) * | 2017-12-21 | 2018-06-19 | 石家庄钢铁有限责任公司 | It is a kind of choose and using hinder naturally stick as detect a flaw sample method |
| CN108469468A (en) * | 2018-06-29 | 2018-08-31 | 中国航发哈尔滨轴承有限公司 | Eddy-current method flaw detection steel ball control sample responsiveness determination method |
| CN110308210A (en) * | 2019-07-26 | 2019-10-08 | 吉林省电力科学研究院有限公司 | It is used for the Sensitivity Calibration sample pipe of far-field eddy harmony pulse detection nonferromagnetic Tube Sheet of Heat Exchanger harness defects simultaneously |
| CN110308209A (en) * | 2019-07-26 | 2019-10-08 | 吉林省电力科学研究院有限公司 | It is used for the Sensitivity Calibration sample pipe of far-field eddy harmony pulse detection heat exchanger tube harness defects simultaneously |
-
2008
- 2008-12-31 CN CNA2008102098579A patent/CN101458229A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102141541A (en) * | 2010-12-28 | 2011-08-03 | 东北轻合金有限责任公司 | Equipment and method for automatically marking defects during eddy current testing of aluminum alloy thin wall pipe |
| CN103913509A (en) * | 2014-04-19 | 2014-07-09 | 中国人民解放军第五七二一工厂 | Defect detection method of paint aluminum alloy frame plate |
| CN103913509B (en) * | 2014-04-19 | 2016-02-10 | 中国人民解放军第五七二一工厂 | A kind of defect inspection method with paint aluminium alloy deckle board |
| CN105699483A (en) * | 2016-03-15 | 2016-06-22 | 南昌航空大学 | Aluminum alloy plate defect detection technology achieved through array eddy current detection |
| CN108181146A (en) * | 2017-12-21 | 2018-06-19 | 石家庄钢铁有限责任公司 | It is a kind of choose and using hinder naturally stick as detect a flaw sample method |
| CN108469468A (en) * | 2018-06-29 | 2018-08-31 | 中国航发哈尔滨轴承有限公司 | Eddy-current method flaw detection steel ball control sample responsiveness determination method |
| CN110308210A (en) * | 2019-07-26 | 2019-10-08 | 吉林省电力科学研究院有限公司 | It is used for the Sensitivity Calibration sample pipe of far-field eddy harmony pulse detection nonferromagnetic Tube Sheet of Heat Exchanger harness defects simultaneously |
| CN110308209A (en) * | 2019-07-26 | 2019-10-08 | 吉林省电力科学研究院有限公司 | It is used for the Sensitivity Calibration sample pipe of far-field eddy harmony pulse detection heat exchanger tube harness defects simultaneously |
| CN110308210B (en) * | 2019-07-26 | 2024-04-09 | 吉林省电力科学研究院有限公司 | Sensitivity calibration sample tube for detecting tube bundle defects of nonferromagnetic heat exchanger by far-field eddy current and acoustic pulse |
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