CN106248797A - A kind of small diameter tube surface straight way Measure of the deep of the defects method - Google Patents
A kind of small diameter tube surface straight way Measure of the deep of the defects method Download PDFInfo
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- CN106248797A CN106248797A CN201610785222.8A CN201610785222A CN106248797A CN 106248797 A CN106248797 A CN 106248797A CN 201610785222 A CN201610785222 A CN 201610785222A CN 106248797 A CN106248797 A CN 106248797A
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- small diameter
- diameter tube
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- straight way
- surface wave
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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
- G01N29/11—Analysing solids by measuring attenuation of acoustic waves
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/023—Solids
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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
- G01N2291/263—Surfaces
- G01N2291/2634—Surfaces cylindrical from outside
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- Life Sciences & Earth Sciences (AREA)
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- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
- Length Measuring Devices Characterised By Use Of Acoustic Means (AREA)
Abstract
The invention discloses a kind of small diameter tube surface straight way Measure of the deep of the defects method, comprise the following steps: 1) use Visual detection methods to find the straight way defect on small diameter tube surface to be measured；2) clear up rust and the foreign body on small diameter tube surface to be measured, and choose couplant and surface wave probe；3) on small diameter tube to be measured, intercept reference block vertically, the more artificial wire casing that the degree of depth is Nmm is offered on the surface of reference block, and draw the distance gain size curve of reference block；4) small diameter tube to be measured is detected by surface wave probe and reflectoscope, and according to the result of detection and step 3) distance gain size curve drawn contrasts, judge that whether the straight way depth of defect on small diameter tube surface to be measured is more than or equal to Nmm, completing the measurement of small diameter tube surface straight way depth of defect, the method can interpolate that out that whether the straight way defect on small diameter tube surface is more than or equal to the straight way defect depth capacity allowed.
Description
Technical field
The invention belongs to Measure of the deep of the defects technical field, relate to a kind of straight way Measure of the deep of the defects side, small diameter tube surface
Method.
Background technology
The small diameter tubes such as station boiler heating surface pipe often can use hot rolling, cold-drawn (rolling) technique manufacture, if quality control
Bad, in steel tube surface, straight way defect can occur, crackle easily germinates exhibition at this, until steel pipe leakage causes unplanned outage thing
Therefore.
The 6.13.1 article of GB 5310-2008 " the lossless steel pipe of high-pressure boiler " to straight way in cold-drawn (rolling) steel tube surface
The degree of depth that defect allows is not more than the 4% of wall thickness, and is 0.2mm to the maximum；Straight way defect on hot finished steel pipe (extruding) steel pipe is permitted
The degree of depth permitted is not more than the 5% of wall thickness, and is 0.4mm to the maximum.The wall thickness of Utility Boiler Superheater and reheater pipe is 4.5mm
～13.5mm, perform GB 5310-2008 " the lossless steel pipe of high-pressure boiler ", typically to superheater and the small diameter tube of reheater
On surface, straight way defect allows to there is straight way defect depth capacity is 0.2mm or 0.4mm.Visual detection methods is used easily to find
Heating surface small diameter tube surface straight way defect, it can be difficult to determine the degree of depth until defect.Accordingly, it would be desirable to a kind of small diameter tube surface is straight
Road Measure of the deep of the defects method, it is possible to detect whether the straight way defect on small diameter tube surface is more than or equal to allow depth capacity, from
And judge that the quality on small diameter tube surface is the most qualified.
Summary of the invention
It is an object of the invention to the shortcoming overcoming above-mentioned prior art, it is provided that a kind of small diameter tube surface straight way defect is deep
Degree measuring method, the method can quickly judge that whether the straight way defect on small diameter tube surface is more than or equal to the straight way defect allowed
Depth capacity.
For reaching above-mentioned purpose, small diameter tube surface of the present invention straight way Measure of the deep of the defects method includes following step
Rapid:
1) Visual detection methods is used to find the straight way defect on small diameter tube surface to be measured；
2) clear up rust and the foreign body on small diameter tube surface to be measured, and choose couplant and surface wave probe, wherein, surface wave
In probe, the bottom surface of sound penetrating wedge is the concave surface matched with small diameter tube surface to be measured；
3) on small diameter tube to be measured, intercept reference block vertically, then the people that the degree of depth is Nmm is offered on the surface of reference block
Work wire casing, and toward the surface-coated couplant of reference block, then detected having a competition by surface wave probe and reflectoscope
Artificial wire casing on block, and draw distance-amplitude curve according to the data of detection；
4) at the surface-coated couplant of small diameter tube to be measured more to be measured little by surface wave probe and reflectoscope detection
Footpath is managed, and according to the result of detection and step 3) distance-amplitude curve of drawing contrasts, it is judged that small diameter tube surface to be measured
Straight way depth of defect, whether more than or equal to Nmm, completes the measurement of small diameter tube surface straight way depth of defect.
Rust and the foreign body on small diameter tube surface to be measured is cleaned by steel wire lump, and by angle grinding machine polishing small diameter tube table to be measured
The pointed structures in face.
The frequency of the surface wave that surface wave probe sends is 1.25～5MHz, and in surface wave probe, the quantity of wafer is 1,
Wafer be the length of side be the square structure of 6mm.
When small diameter tube to be measured is cold rolling small diameter tube, the degree of depth of artificial wire casing is 2mm；When small diameter tube to be measured is hot rolling path
Guan Shi, the degree of depth of artificial wire casing is 4mm.
Step 3) concrete operations be:
Small diameter tube to be measured intercepts reference block vertically, then offers the people that the degree of depth is Nmm on the surface of reference block
Work wire casing, and toward the surface-coated couplant of reference block, then surface wave probe is placed in boostrap slot pitch from for 1/4 week
Long position, the ripple after the surface wave test block by contrast reflection that surface wave probe produces is 80% echo all over the screen, by this 80%
Echo all over the screen is as the starting point of distance-amplitude curve；
Surface wave probe is placed in and the position of 1/2 girth of manually slotting, measures the surface wave warp that surface wave probe produces
The amplitude of the ripple after reference block reflection is a, then is placed in by surface wave probe and the position of 3/4 girth of manually slotting, and measures table
The amplitude of the ripple after the surface wave test block by contrast reflection that ripple probe in face produces is b, then according to boostrap slot pitch from for 1/4
The amplitude of the position measurement of the position of girth, the position of 1/2 girth and 3/4 girth draws distance-amplitude curve.
Step 4) concrete operations be:
The straight way defect of visual finding small diameter tube to be measured, and at surface markers A point, B point and the C point of small diameter tube to be measured, its
In, A point, B point and the C point distance away from described straight way defect are respectively 1/4 girth, 1/2 girth and 3/4 girth, then to be measured
The surface-coated couplant of small diameter tube；
Surface wave probe is respectively placed in the position of A point, the position of B point and the position of C point, and detection surface wave probe produces
The amplitude of ripple that reflects through small diameter tube surface to be measured of surface wave, then according to position, the position of B point and the C point of A point
Amplitude and the step 3 of position detection) distance-amplitude curve of drawing contrasts, it is judged that and the straight way on small diameter tube surface to be measured is scarce
The sunken degree of depth, whether more than or equal to Nmm, completes the measurement of small diameter tube surface straight way depth of defect.
The method have the advantages that
Small diameter tube surface of the present invention straight way Measure of the deep of the defects method, when measuring, first intercepts reference block, then
Manufacturing artificial wire casing in reference block, wherein, the degree of depth of artificial wire casing is that straight way defect maximum fills the degree of depth perhaps, and passes through surface
Ripple probe detection reference block, and draw the distance-amplitude curve of reference block, detected to be measured the most again by surface wave probe
Straight way defect on small diameter tube, and use the method for contrast to be carried out by the distance-amplitude curve of the result of detection with reference block
Contrast, can judge whether the straight way defect on small diameter tube surface is more than or equal to the straight way defect depth capacity allowed, thus sentences
Breaking, it is the most qualified this small diameter tube, easy to operate, and it is the most accurate to measure.
Accompanying drawing explanation
Fig. 1 is distance-amplitude curve figure that the present invention draws.
Detailed description of the invention
Below in conjunction with the accompanying drawings the present invention is described in further detail:
With reference to Fig. 1, small diameter tube surface of the present invention straight way Measure of the deep of the defects method comprises the following steps:
1) Visual detection methods is used to find the straight way defect on small diameter tube surface to be measured；
2) clear up rust and the foreign body on small diameter tube surface to be measured, and choose couplant and surface wave probe, wherein, surface wave
In probe, the bottom surface of sound penetrating wedge is the concave surface matched with small diameter tube surface to be measured；
3) on small diameter tube to be measured, intercept reference block vertically, then the people that the degree of depth is Nmm is offered on the surface of reference block
Work wire casing, and toward the surface-coated couplant of reference block, then detected having a competition by surface wave probe and reflectoscope
Artificial wire casing on block, and draw distance-amplitude curve according to the data of detection；
4) at the surface-coated couplant of small diameter tube to be measured more to be measured little by surface wave probe and reflectoscope detection
Footpath is managed, and according to the result of detection and step 3) distance-amplitude curve of drawing contrasts, it is judged that small diameter tube surface to be measured
Straight way depth of defect, whether more than or equal to Nmm, completes the measurement of small diameter tube surface straight way depth of defect.
Rust and the foreign body on small diameter tube surface to be measured is cleaned by steel wire lump, and by angle grinding machine polishing small diameter tube table to be measured
The pointed structures in face.
The frequency of the surface wave that surface wave probe sends is 1.25～5MHz, and in surface wave probe, the quantity of wafer is 1,
Wafer be the length of side be the square structure of 6mm.
When small diameter tube to be measured is cold rolling small diameter tube, the degree of depth of artificial wire casing is 2mm；When small diameter tube to be measured is hot rolling path
Guan Shi, the degree of depth of artificial wire casing is 4mm.
Step 3) concrete operations be:
Small diameter tube to be measured intercepts reference block vertically, then offers the people that the degree of depth is Nmm on the surface of reference block
Work wire casing, and toward the surface-coated couplant of reference block, then surface wave probe is placed in boostrap slot pitch from for 1/4 week
Long position, the ripple after the surface wave test block by contrast reflection that surface wave probe produces is 80% echo all over the screen, by this 80%
Echo all over the screen is as the starting point of distance-amplitude curve；
Surface wave probe is placed in and the position of 1/2 girth of manually slotting, measures the surface wave warp that surface wave probe produces
The amplitude of the ripple after reference block reflection is a, then is placed in by surface wave probe and the position of 3/4 girth of manually slotting, and measures table
The amplitude of the ripple after the surface wave test block by contrast reflection that ripple probe in face produces is b, then according to boostrap slot pitch from for 1/4
The amplitude of the position measurement of the position of girth, the position of 1/2 girth and 3/4 girth draws distance-amplitude curve.
Step 4) concrete operations be:
The straight way defect of visual finding small diameter tube to be measured, and at surface markers A point, B point and the C point of small diameter tube to be measured, its
In, A point, B point and the C point distance away from described straight way defect are respectively 1/4 girth, 1/2 girth and 3/4 girth, then to be measured
The surface-coated couplant of small diameter tube；
Surface wave probe is respectively placed in the position of A point, the position of B point and the position of C point, and detection surface wave probe produces
The amplitude of ripple that reflects through small diameter tube surface to be measured of surface wave, then according to position, the position of B point and the C point of A point
Amplitude and the step 3 of position detection) distance-amplitude curve of drawing contrasts, it is judged that and the straight way on small diameter tube surface to be measured is scarce
The sunken degree of depth, whether more than or equal to Nmm, completes the measurement of small diameter tube surface straight way depth of defect.
With reference to Fig. 1, when the point of the amplitude that small diameter tube to be measured detects Yu position is positioned at below distance-amplitude curve,
Then illustrating that the straight way depth of defect on small diameter tube surface to be measured is less than Nmm, small diameter tube the most to be measured is qualified；When small diameter tube to be measured detects
When the amplitude come and the point of position are positioned at above distance-amplitude curve, then the straight way depth of defect on small diameter tube surface to be measured is described
More than Nmm, i.e. small diameter tube is defective；The amplitude detected when small diameter tube to be measured is positioned at distance-amplitude curve with the point of position
Time upper, then illustrated that the straight way depth of defect on small diameter tube surface to be measured was qualified equal to Nmm, i.e. small diameter tube, but there is risk.
Claims (6)
1. a small diameter tube surface straight way Measure of the deep of the defects method, it is characterised in that comprise the following steps:
1) Visual detection methods is used to find the straight way defect on small diameter tube surface to be measured；
2) clear up rust and the foreign body on small diameter tube surface to be measured, and choose couplant and surface wave probe, wherein, surface wave probe
The bottom surface of middle sound penetrating wedge is the concave surface matched with small diameter tube surface to be measured；
3) on small diameter tube to be measured, intercept reference block vertically, then the boostrap that the degree of depth is Nmm is offered on the surface of reference block
Groove, and toward the surface-coated couplant of reference block, then by surface wave probe and reflectoscope detection reference block
Artificial wire casing, and according to detection data draw distance-amplitude curve；
4) at the surface-coated couplant of small diameter tube to be measured, then path to be measured is detected by surface wave probe and reflectoscope
Pipe, and according to the result of detection and step 3) distance-amplitude curve of drawing contrasts, it is judged that small diameter tube surface to be measured straight
Road depth of defect, whether more than or equal to Nmm, completes the measurement of small diameter tube surface straight way depth of defect.
Small diameter tube surface the most according to claim 1 straight way Measure of the deep of the defects method, it is characterised in that pass through steel wire lump
Clean rust and the foreign body on small diameter tube surface to be measured, and the pointed structures on small diameter tube surface to be measured of being polished by angle grinding machine.
Small diameter tube surface the most according to claim 1 straight way Measure of the deep of the defects method, it is characterised in that surface wave probe
The frequency of the surface wave sent is 1.25～5MHz, and in surface wave probe, the quantity of wafer is 1, wafer be the length of side be 6mm's
Square structure.
Small diameter tube surface the most according to claim 1 straight way Measure of the deep of the defects method, it is characterised in that when path to be measured
When pipe is for cold rolling small diameter tube, the degree of depth of artificial wire casing is 2mm；When small diameter tube to be measured is hot rolling small diameter tube, artificial wire casing deep
Degree is 4mm.
Small diameter tube surface the most according to claim 1 straight way Measure of the deep of the defects method, it is characterised in that step 3) tool
Gymnastics conduct:
Small diameter tube to be measured intercepts reference block vertically, then offers the boostrap that the degree of depth is Nmm on the surface of reference block
Groove, and toward the surface-coated couplant of reference block, is then placed in surface wave probe with boostrap slot pitch from for 1/4 girth
Position, the ripple after the surface wave test block by contrast reflection that surface wave probe produces is 80% echo all over the screen, and this is 80% all over the screen
Echo is as the starting point of distance-amplitude curve；
Surface wave probe is placed in and the position of 1/2 girth of manually slotting, measures the surface wave of surface wave probe generation by contrast
The amplitude of the ripple after test block reflection is a, then is placed in by surface wave probe and the position of 3/4 girth of manually slotting, and measures surface wave
The amplitude of ripple after the surface wave test block by contrast reflection that probe produces is b, then according to boostrap slot pitch from for 1/4 girth
Position, the position of 1/2 girth and 3/4 girth position measurement amplitude draw distance-amplitude curve.
Small diameter tube surface the most according to claim 1 straight way Measure of the deep of the defects method, it is characterised in that step 4) tool
Gymnastics conduct:
The straight way defect of visual finding small diameter tube to be measured, and at surface markers A point, B point and the C point of small diameter tube to be measured, wherein, A
Point, B point and the C point distance away from described straight way defect are respectively 1/4 girth, 1/2 girth and 3/4 girth, then at path to be measured
The surface-coated couplant of pipe；
Surface wave probe is respectively placed in the position of A point, the position of B point and the position of C point, the table that detection surface wave probe produces
The amplitude of the ripple that face ripple reflects through small diameter tube surface to be measured, then according to position, the position of B point and the position of C point of A point
The amplitude of detection and step 3) distance-amplitude curve of drawing contrasts, it is judged that and the straight way defect on small diameter tube surface to be measured is deep
Degree, whether more than or equal to Nmm, completes the measurement of small diameter tube surface straight way depth of defect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610785222.8A CN106248797A (en) | 2016-08-30 | 2016-08-30 | A kind of small diameter tube surface straight way Measure of the deep of the defects method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610785222.8A CN106248797A (en) | 2016-08-30 | 2016-08-30 | A kind of small diameter tube surface straight way Measure of the deep of the defects method |
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| CN106248797A true CN106248797A (en) | 2016-12-21 |
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| CN201610785222.8A Pending CN106248797A (en) | 2016-08-30 | 2016-08-30 | A kind of small diameter tube surface straight way Measure of the deep of the defects method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111458408A (en) * | 2020-04-30 | 2020-07-28 | 国电锅炉压力容器检验有限公司 | Method for judging longitudinal defect of small-diameter pipe through ultrasonic guided wave detection |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101509899A (en) * | 2009-03-18 | 2009-08-19 | 天津市电力公司 | Ultrasonic detecting method for electric power pylon steel angle |
| CN103063745A (en) * | 2012-12-31 | 2013-04-24 | 河北省电力公司电力科学研究院 | Method for measuring inner arc ultrasonic sound energy loss of small diameter tube |
| CN105203635A (en) * | 2015-10-29 | 2015-12-30 | 西安热工研究院有限公司 | Surface wave detection method for longitudinal defect on outer surface of small-diameter tube |
-
2016
- 2016-08-30 CN CN201610785222.8A patent/CN106248797A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101509899A (en) * | 2009-03-18 | 2009-08-19 | 天津市电力公司 | Ultrasonic detecting method for electric power pylon steel angle |
| CN103063745A (en) * | 2012-12-31 | 2013-04-24 | 河北省电力公司电力科学研究院 | Method for measuring inner arc ultrasonic sound energy loss of small diameter tube |
| CN105203635A (en) * | 2015-10-29 | 2015-12-30 | 西安热工研究院有限公司 | Surface wave detection method for longitudinal defect on outer surface of small-diameter tube |
Non-Patent Citations (1)
| Title |
|---|
| 张红军 等: "T91钢管外表面纵向缺陷超声检测技术", 《热力发电》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111458408A (en) * | 2020-04-30 | 2020-07-28 | 国电锅炉压力容器检验有限公司 | Method for judging longitudinal defect of small-diameter pipe through ultrasonic guided wave detection |
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Application publication date: 20161221 |