CN101806779A - Method for calibrating small-diameter probe for ultrasonic flaw detector - Google Patents
Method for calibrating small-diameter probe for ultrasonic flaw detector Download PDFInfo
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- CN101806779A CN101806779A CN 201010161316 CN201010161316A CN101806779A CN 101806779 A CN101806779 A CN 101806779A CN 201010161316 CN201010161316 CN 201010161316 CN 201010161316 A CN201010161316 A CN 201010161316A CN 101806779 A CN101806779 A CN 101806779A
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Abstract
The invention discloses a method for calibrating a small-diameter probe for an ultrasonic flaw detector, belonging to the method for calibrating an instrument. The method for calibrating the small-diameter probe for the ultrasonic flaw detector comprises the following steps in sequence: manufacturing a test block for calibrating the small-diameter probe for the ultrasonic flaw detector; moving the external circular arc probe near the point O1 on the surface of the arc of the test block back and force, wherein the arc of the test block is drawn by adopting the radius R2; obtaining the range S1 of the echo of a radius R1; measuring the distance between the point O1 and the foremost edge of the small-diameter probe, wherein the distance is the front edge b of the small-diameter probe; adjusting the direction of the small-diameter probe to make the small-diameter probe aligned to the direction of the hole, and obtaining the range S of the echo of the hole; and obtaining the range a of the echo in the small-diameter probe and the value K of the small-diameter probe. The invention makes up the blank of the calibration of the value K of the small-diameter probe, the front edge b of small-diameter probe and the range a of the echo in the small-diameter probe and reduces the loss cost of the small-diameter probe.
Description
Technical field
The present invention relates to a kind of instrument calibration method, relate in particular to a kind of ratio that is applicable to inside and outside footpath greater than 55%, external diameter is less than 100.0mm cylindrical forged piece, weldless steel tube, longitudinal welded pipe or the shaft-like workpiece excircle method for calibrating small-diameter probe for ultrasonic flaw detector to calibration.
Background technology
At present the K value that provides according to probe manufacturer is provided the flaw detection user of service, the forward position b of measuring sonde and ultrasound wave walked in probe inside apart from a, the position at calculating defective place.But often pop one's head in the target K of institute value, there are certain deviation in probe forward position b and ultrasound wave in the inner value of being walked apart from a and reality of probe, add in the probe use and caused loss, corresponding variation can take place in K value and a, but the user of service can't judge and calibrate, when probe may wear to a certain degree, deviation can appear in the location of defective, when deviation increases to a certain degree, the flaw detection user of service can only change probe, has so just improved user's cost greatly.
Summary of the invention
Problem at above-mentioned prior art existence, the object of the invention is to provide a kind of method for calibrating small-diameter probe for ultrasonic flaw detector, remedied prior art to small-diameter probe calibration K value, the blank of probe forward position b and the inner sound path a of probe, the cost depletions of reduction probe simultaneously.
Technical scheme of the present invention is: a kind of method for calibrating small-diameter probe for ultrasonic flaw detector, comprise a ultra-sonic defect detector, and it carries out the workpiece flaw detection by probe emission ultrasound wave, may further comprise the steps successively:
1) makes test block: get the acoustical behavior sheet material identical of a material, thereon with O with tested workpiece
2Point is for the center of circle, with tested excircle of workpiece radius R
2Draw arc, with this arc mid point O
1Be the center of circle, get radius R
1Draw another arc, to be that the center of circle drills through the hole a bit in the two arcs institute enclosing region, this bore dia is φ again, and this hole is to radius R
2The distance of arc is h, and radius R
2The normal in this hole of mistake and this arc intersection point are to O on the arc
1Arc length is 1/4 of this arc arc length, and part mill off beyond the two arcs institute enclosing region had both been formed calibration block;
2) use the external arc probe at the test block radius R
2Put O on the arc cambered surface
1Near move around, show that on ultra-sonic defect detector ultrasound wave is at radius R
1The arc place produces the highest reflection wave, obtains echo sound path S
1, measure O this moment
1Point is to the distance of probe forefront, and this distance is probe forward position b, continues mobile external arc probe and shows that on ultra-sonic defect detector ultrasound wave produces the highest reflection wave at the place, hole, obtains echo sound path S;
3) according to following mathematical model obtain popping one's head in inner sound path a and probe K value:
Inner sound path a:a=S pops one's head in
1-R
1
Probe K value: β=COS
-1[R
2 2+ (S+ φ/2)
2-(R
2-h)
2]/2R
2(S+ φ/2), tg β=K.
The invention has the beneficial effects as follows: first is to provide for the user method for making of test block, and the user need not oneself design test block again.Second is to be applicable to that test block volume of the present invention is little, in light weight, easy to carry, is applicable to that the user who finishes open-air flaw detection engineering finishes calibration at any time.The 3rd has been to remedy the function that present UT (Ultrasonic Testing) instrument does not possess the small-diameter probe calibration, improved the life cycle of probe greatly and to the probe K value, the accuracy of probe forward position b and the inner sound path a of probe, thus the location to defective will be more accurate in the flaw detection process.
Description of drawings
Fig. 1 is the operation chart of the embodiment of the invention.
Embodiment
As one embodiment of the present invention, as shown in Figure 1, a kind of method for calibrating small-diameter probe for ultrasonic flaw detector comprises a ultra-sonic defect detector, and it carries out the workpiece flaw detection by probe emission ultrasound wave, may further comprise the steps successively:
1) makes test block: get the acoustical behavior sheet material identical of a material, thereon with O with tested workpiece
2Point is for the center of circle, with tested excircle of workpiece radius R
2Draw arc, with this arc mid point O
1Be the center of circle, get radius R
1Draw another arc, to be that the center of circle drills through hole 3 a bit in the two arcs institute enclosing region, these hole 3 diameters are φ again, and this hole 3 is to radius R
2The distance of arc is h, and radius R
2The normal in this hole 3 of mistake and this arc intersection point are to O on the arc
1Arc length is 1/4 of this arc arc length, and part mill off beyond the two arcs institute enclosing region had both been formed calibration block 1;
2) use external arc probe 2 at test block 1 radius R
2Put O on the arc cambered surface
1Near move around, show that on ultra-sonic defect detector ultrasound wave is at radius R
1The arc place produces the highest reflection wave, obtains echo sound path S
1, measure O this moment
1Point is to the distance of probe 2 forefronts, and this distance is probe forward position b, continues mobile external arc probe 2 and shows that on ultra-sonic defect detector 3 places produce the highest reflection wave to ultrasound wave in the hole, obtain echo sound path S;
3) according to following mathematical model obtain popping one's head in inner sound path a and probe K value:
Inner sound path a:a=S pops one's head in
1-R
1
Probe K value: β=COS
-1[R
2 2+ (S+ φ/2)
2-(R
2-h)
2]/2R
2(S+ φ/2), tg β=K.
More than a kind of method for calibrating small-diameter probe for ultrasonic flaw detector provided by the present invention has been carried out detailed introduction, used specific case herein principle of the present invention and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (1)
1. a method for calibrating small-diameter probe for ultrasonic flaw detector comprises a ultra-sonic defect detector, and it carries out the workpiece flaw detection by probe emission ultrasound wave, it is characterized in that may further comprise the steps successively:
1) makes test block: get the acoustical behavior sheet material identical of a material, thereon with O with tested workpiece
2Point is for the center of circle, with tested excircle of workpiece radius R
2Draw arc, with this arc mid point O
1Be the center of circle, get radius R
1Draw another arc, to be that the center of circle drills through the hole a bit in the two arcs institute enclosing region, this bore dia is φ again, and this hole is to radius R
2The distance of arc is h, and radius R
2The normal in this hole of mistake and this arc intersection point are to O on the arc
1Arc length is 1/4 of this arc arc length, and part mill off beyond the two arcs institute enclosing region had both been formed calibration block;
2) use the external arc probe at the test block radius R
2Put O on the arc cambered surface
1Near move around, show that on ultra-sonic defect detector ultrasound wave is at radius R
1The arc place produces the highest reflection wave, obtains echo sound path S
1, measure O this moment
1Point is to the distance of probe forefront, and this distance is probe forward position b, adjusts probe orientation, makes alignment probe hole direction, continues mobile external arc probe and shows that on ultra-sonic defect detector ultrasound wave produces the highest reflection wave at the place, hole, obtains echo sound path S;
3) according to following mathematical model obtain popping one's head in inner sound path a and probe K value:
Inner sound path a:a=S pops one's head in
1-R
1
Probe K value: β=COS
-1[R
2 2+ (S+ φ/2)
2-(R
2-h)
2]/2R
2(S+ φ/2), tg β=K.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010161316 CN101806779A (en) | 2010-04-30 | 2010-04-30 | Method for calibrating small-diameter probe for ultrasonic flaw detector |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010161316 CN101806779A (en) | 2010-04-30 | 2010-04-30 | Method for calibrating small-diameter probe for ultrasonic flaw detector |
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|---|---|
| CN101806779A true CN101806779A (en) | 2010-08-18 |
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ID=42608669
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|---|---|---|---|
| CN 201010161316 Pending CN101806779A (en) | 2010-04-30 | 2010-04-30 | Method for calibrating small-diameter probe for ultrasonic flaw detector |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103913516A (en) * | 2014-03-29 | 2014-07-09 | 国家电网公司 | Method for detecting high-alloy steel by using ultrasonic instrument calibrated by general carbon steel test block |
| CN105021707A (en) * | 2015-06-01 | 2015-11-04 | 宁波江丰生物信息技术有限公司 | Focusing method for ultrasonic fault detector used for detection of welds of semiconductor target materials |
| CN105116057A (en) * | 2015-09-18 | 2015-12-02 | 安徽省特种设备检测院 | Ultrasonic probe for detecting rolling defects of small-bore pipes and test block used with ultrasonic probe |
| CN105467008A (en) * | 2015-12-15 | 2016-04-06 | 攀钢集团成都钢钒有限公司 | URP350 flaw detection machine long water column correction method |
| CN110763770A (en) * | 2019-11-06 | 2020-02-07 | 南京迪威尔高端制造股份有限公司 | Drum-shaped test block |
| CN111965261A (en) * | 2020-07-09 | 2020-11-20 | 大唐东北电力试验研究院有限公司 | Method for calculating machining position of circumferential guided wave ultrasonic transducer |
| CN112630300A (en) * | 2020-12-11 | 2021-04-09 | 东莞先知大数据有限公司 | Intelligent Internet of things ultrasonic probe system and ultrasonic probe replacement prompting method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3662482B2 (en) * | 2000-07-31 | 2005-06-22 | 財団法人鉄道総合技術研究所 | Calibration specimen for ultrasonic inspection of rail welds |
| CN201311412Y (en) * | 2008-10-27 | 2009-09-16 | 上海宝钢工业检测公司 | Medium-high temperature ultrasound transverse wave detecting checking testing block |
-
2010
- 2010-04-30 CN CN 201010161316 patent/CN101806779A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3662482B2 (en) * | 2000-07-31 | 2005-06-22 | 財団法人鉄道総合技術研究所 | Calibration specimen for ultrasonic inspection of rail welds |
| CN201311412Y (en) * | 2008-10-27 | 2009-09-16 | 上海宝钢工业检测公司 | Medium-high temperature ultrasound transverse wave detecting checking testing block |
Non-Patent Citations (1)
| Title |
|---|
| 《NDT无损检测》 2005 刘英和 小径管内壁纵向裂纹的外圆周向超声波检测 1 第27卷, 第3期 * |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103913516A (en) * | 2014-03-29 | 2014-07-09 | 国家电网公司 | Method for detecting high-alloy steel by using ultrasonic instrument calibrated by general carbon steel test block |
| CN105021707A (en) * | 2015-06-01 | 2015-11-04 | 宁波江丰生物信息技术有限公司 | Focusing method for ultrasonic fault detector used for detection of welds of semiconductor target materials |
| CN105116057A (en) * | 2015-09-18 | 2015-12-02 | 安徽省特种设备检测院 | Ultrasonic probe for detecting rolling defects of small-bore pipes and test block used with ultrasonic probe |
| CN105467008A (en) * | 2015-12-15 | 2016-04-06 | 攀钢集团成都钢钒有限公司 | URP350 flaw detection machine long water column correction method |
| CN105467008B (en) * | 2015-12-15 | 2018-08-14 | 攀钢集团成都钢钒有限公司 | URP350 flaw detection captain's water column proof methods |
| CN110763770A (en) * | 2019-11-06 | 2020-02-07 | 南京迪威尔高端制造股份有限公司 | Drum-shaped test block |
| CN111965261A (en) * | 2020-07-09 | 2020-11-20 | 大唐东北电力试验研究院有限公司 | Method for calculating machining position of circumferential guided wave ultrasonic transducer |
| CN111965261B (en) * | 2020-07-09 | 2023-03-24 | 大唐东北电力试验研究院有限公司 | Method for calculating machining position of circumferential guided wave ultrasonic transducer |
| CN112630300A (en) * | 2020-12-11 | 2021-04-09 | 东莞先知大数据有限公司 | Intelligent Internet of things ultrasonic probe system and ultrasonic probe replacement prompting method |
| CN112630300B (en) * | 2020-12-11 | 2021-10-12 | 东莞先知大数据有限公司 | Intelligent Internet of things ultrasonic probe system and ultrasonic probe replacement prompting method |
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Application publication date: 20100818 |