CN110261475B - Manual ultrasonic precise positioning method for inclusions in round steel - Google Patents
Manual ultrasonic precise positioning method for inclusions in round steel Download PDFInfo
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- CN110261475B CN110261475B CN201910401152.5A CN201910401152A CN110261475B CN 110261475 B CN110261475 B CN 110261475B CN 201910401152 A CN201910401152 A CN 201910401152A CN 110261475 B CN110261475 B CN 110261475B
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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
- G01N29/048—Marking the faulty objects
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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
- G01N29/06—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
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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
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/225—Supports, positioning or alignment in moving situation
- G01N29/226—Handheld or portable devices
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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
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/227—Details, e.g. general constructional or apparatus details related to high pressure, tension or stress conditions
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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
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/26—Arrangements for orientation or scanning by relative movement of the head and the sensor
- G01N29/265—Arrangements for orientation or scanning by relative movement of the head and the sensor by moving the sensor relative to a stationary material
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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
- G01N2291/0234—Metals, e.g. steel
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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
- G01N2291/028—Material parameters
- G01N2291/0289—Internal structure, e.g. defects, grain size, texture
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Abstract
The invention relates to the technical field of material detection, in particular to a manual ultrasonic precise positioning method for inclusions in round steel, which has the technical scheme that: carry out first location and sign with conventional manual ultrasonic flaw detector and conventional probe to inclusion in the round steel, two parallel planes of perpendicular to scanning direction processing around inclusion position, make inclusion position contain between two parallel planes, the two parallel plane intervals of precision measurement round steel, the location scanning parameter of calibration ultrasonic flaw detector on the round steel according to two parallel plane intervals of round steel, scan the defect and find out the highest signal of inclusion on the round steel, show inclusion signal position and probe position precision location inclusion position and sign on the defect appearance in the round steel according to the instrument. The invention has the advantages of economy, high efficiency, high positioning precision, simple and safe operation, convenience, flexibility and convenient popularization and application.
Description
Technical Field
The invention relates to the technical field of material detection, in particular to a manual ultrasonic precise positioning method for inclusions in round steel.
Background
Ultrasonic flaw detection is an important means for detecting the internal quality of workpieces made of compact elastic materials such as metal materials, ultrasonic waves are transmitted into a coupling medium and the workpieces by a probe during flaw detection, the ultrasonic waves encounter reflectors with different acoustic characteristics in the workpieces, part of the reflected ultrasonic waves are received by the probe and converted into voltage signals to be transmitted to an ultrasonic flaw detector, and corresponding flaw position signals and amplitude are displayed on a screen of the flaw detector, so that the quality condition of the workpieces is judged.
The special steel production has strict requirements on internal quality, and micro defects such as inclusions in steel are often sampled and anatomically verified in research on development and quality improvement of special steel products. Before the defect sample is dissected, inclusions in steel need to be accurately positioned and identified so as to facilitate accurate dissection and microscopic search. Due to the small size of inclusions in steel (typically in the tens to hundreds of microns), accurate positioning of inclusions in steel is a challenge for anatomical testing.
At present, in 2009 08 th month, at volume 29, No. 4 of the bulletin and arrow and guidance bulletin, research on ultrasonic detection methods for rod-shaped blanks of alloy elastomers is proposed: the defect reconstruction method adopting a water immersion focusing probe detection method and a C scanning mode is adopted, and automatic detection can be realized by an automatic detection device, so that the position, the shape and the size of a defect can be visually judged; in the No. 1 of 2001, the electronic measurement technology, the digital imaging method and the precise positioning technology of defects in ultrasonic detection, proposes: the ultrasonic detection digital imaging system does not directly use the defect signal for defect positioning, echo envelope detection is carried out by Hilbert transform, the problems of noise suppression and multi-peak envelope detection are solved, modeling and spectrum estimation analysis of an AR time sequence are carried out, so that the envelope main peak of the echo signal becomes sharper, in-band noise is further suppressed, and finally the position of the defect is determined by the finally obtained main peak envelope, and the positioning precision is greatly superior to that of the traditional ultrasonic flaw detector.
The technical scheme has the defects that: the method needs special supporting equipment facilities, high and deep theoretical knowledge and detection operation skills with high technical level, has the defects of limitation of the test by equipment and fields, high cost, complex procedure, long flow, long time consumption, large workload, poor operation flexibility and the like, and is difficult to popularize and apply in general enterprises, so the improvement is needed.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the manual ultrasonic precise positioning method for the inclusions in the round steel, which has the advantages of economy, high efficiency, high positioning precision, simple and safe operation, convenience, flexibility and convenience in popularization and application.
The technical purpose of the invention is realized by the following technical scheme: a manual ultrasonic precise positioning method for inclusions in round steel comprises the following steps:
(1) intercepting a round steel inclusion defect sample, and placing an ultrasonic probe on the cylindrical surface of the round steel to check the sound velocity and scan the display range at a defect-free position according to the specification of the round steel;
(2) moving the probe on the round steel column surface to scan to obtain the maximum echo signal of the inclusions, and determining the center position of the probe at the moment;
(3) making a straight line in the direction of the center of the probe on the section of the round steel passing through the center of a circle to determine a main sound beam line of ultrasonic scanning, and marking the position of the inclusion on the main sound beam line according to the depth value displayed by an instrument to complete the primary positioning of the inclusion;
(4) making two parallel lines perpendicular to the main sound beam line on the section of the round steel to enable the inclusion mark to be positioned between the two parallel lines;
(5) processing two parallel longitudinal smooth planes on the round steel along two parallel lines, and measuring the distance between the two parallel planes by using a vernier caliper;
(6) placing the probe on a plane close to the primary positioning direction, applying constant pressure to the probe, adjusting scanning parameters of an instrument according to the distance between the two parallel surfaces, and repeatedly adjusting the sound velocity and the zero value of the probe in the ultrasonic flaw detector to enable the display positions of the primary bottom wave and the secondary bottom wave to respectively correspond to one time and two times of the distance between the two parallel surfaces of the round steel;
(7) keeping the pressure of the probe unchanged, adjusting the sensitivity of the instrument, moving the probe on the round steel to find out the maximum reflection signal of the inclusions, adjusting the sensitivity of the instrument to enable the peak value of the signal of the inclusions to be slightly lower than the height of the gate, and reading the depth value of the signal of the inclusions in the instrument;
(8) marking the position of the inclusion on the round steel according to the central position of the probe on the scanning plane and the depth value of the inclusion signal, and finishing secondary accurate positioning of the inclusion.
In conclusion, the invention has the following beneficial effects:
firstly, the economy is good, the test efficiency is high, the operation is simple, safe, convenient and flexible, and the learning and the use are easy;
secondly, the positioning precision is high, and the foreign substance dissection searching efficiency is high;
and thirdly, the popularization and the application are convenient.
Drawings
FIG. 1 is a schematic front view of the round steel positioning by the probe in this embodiment;
fig. 2 is a schematic side view of the probe positioning on the round steel in this embodiment.
In the figure: 1. a probe; 2. round steel; 3. and (4) inclusion.
Detailed Description
The invention is described in detail below with reference to the figures and examples.
As shown in fig. 1 and 2, a manual ultrasonic precise positioning method for inclusions in round steel comprises the following steps:
(1) intercepting a defect sample of inclusions 3 in the round steel 2, and placing the ultrasonic probe 1 on the cylindrical surface of the round steel 2 to check the sound velocity and scan the display range at the defect-free part according to the specification of the round steel 2;
(2) the probe 1 is operated to move on the cylindrical surface of the round steel 2 to scan to obtain the maximum echo signal of the inclusion 3, and the center position of the probe 1 at the moment is determined;
(3) determining a main sound beam line of ultrasonic scanning by making a straight line in the position where the center of the probe 1 is located on the section of the round steel 2 passing through the center of a circle, and marking the position of the inclusion 3 on the main sound beam line according to the depth value displayed by an instrument to complete the primary positioning of the inclusion 3;
(4) two parallel lines perpendicular to the main sound beam line are made on the section of the round steel 2, so that the foreign substance 3 mark is positioned between the two parallel lines;
(5) processing two parallel longitudinal smooth planes on the round steel 2 along two parallel lines, and measuring the distance between the two parallel planes by using a vernier caliper;
(6) placing the probe 1 on a plane close to the primary positioning direction, applying constant pressure to the probe 1, adjusting scanning parameters of an instrument according to the distance between the two parallel surfaces, and repeatedly adjusting the sound velocity in the ultrasonic flaw detector and the zero value of the probe 1 to enable the display positions of the primary bottom wave and the secondary bottom wave to respectively correspond to one time and two times of the distance between the two parallel surfaces of the round steel 2;
(7) keeping the pressure of the probe 1 unchanged, adjusting the sensitivity of the instrument, moving the probe 1 on the round steel 2 to find out the maximum reflection signal of the inclusion 3, adjusting the sensitivity of the instrument to enable the signal peak value of the inclusion 3 to be slightly lower than the height of a gate, and reading the signal depth value of the inclusion 3 in the instrument;
(8) marking the position of the inclusion 3 on the round steel 2 according to the central position of the probe 1 on the scanning plane and the signal depth value of the inclusion 3, and finishing the secondary accurate positioning of the inclusion 3.
The implementation principle of the embodiment is as follows: use inclusion 3 location in the round steel 2 as an example, carry out first location and sign with inclusion 3 in the manual ultrasonic flaw detector of conventionality and conventional probe 1 pair round steel 2, two parallel planes of perpendicular to scanning direction processing around inclusion 3 position, make inclusion 3 position contain between two parallel planes, two parallel plane intervals of accurate measurement round steel 2, the location scanning parameter of calibration ultrasonic flaw detector on round steel 2 according to round steel 2's two parallel plane intervals, find out the highest signal of inclusion 3 on round steel 2, show inclusion 3 signal position and round steel probe 1 position accurate positioning round steel 2 in inclusion 3 signal position and the round steel probe according to the instrument and sign on round steel 2.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (1)
1. A manual ultrasonic precise positioning method for inclusions in round steel is characterized by comprising the following steps:
(1) intercepting a round steel inclusion defect sample, and placing an ultrasonic probe on the cylindrical surface of the round steel to check the sound velocity and scan the display range at a defect-free position according to the specification of the round steel;
(2) moving the probe on the round steel column surface to scan to obtain the maximum echo signal of the inclusions, and determining the center position of the probe at the moment;
(3) making a straight line in the direction of the center of the probe on the section of the round steel passing through the center of a circle to determine a main sound beam line of ultrasonic scanning, and marking the position of the inclusion on the main sound beam line according to the depth value displayed by an instrument to complete the primary positioning of the inclusion;
(4) making two parallel lines perpendicular to the main sound beam line on the section of the round steel to enable the inclusion mark to be positioned between the two parallel lines;
(5) processing two parallel longitudinal smooth planes on the round steel along two parallel lines, and measuring the distance between the two parallel planes by using a vernier caliper;
(6) placing the probe on a plane close to the primary positioning direction, applying constant pressure to the probe, adjusting scanning parameters of an instrument according to the distance between the two parallel surfaces, and repeatedly adjusting the sound velocity and the zero value of the probe in the ultrasonic flaw detector to enable the display positions of the primary bottom wave and the secondary bottom wave to respectively correspond to one time and two times of the distance between the two parallel surfaces of the round steel;
(7) keeping the pressure of the probe unchanged, adjusting the sensitivity of the instrument, moving the probe on the round steel to find out the maximum reflection signal of the inclusions, adjusting the sensitivity of the instrument to enable the peak value of the signal of the inclusions to be slightly lower than the height of the gate, and reading the depth value of the signal of the inclusions in the instrument;
(8) marking the position of the inclusion on the round steel according to the central position of the probe on the scanning plane and the depth value of the inclusion signal, and finishing secondary accurate positioning of the inclusion.
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| CN113352041B (en) * | 2021-06-10 | 2022-10-25 | 山东塔高矿业机械装备制造有限公司 | Method for ensuring position and size of hydraulic support small column nest sphere center and connecting lug plate hole axis |
| TWI774546B (en) * | 2021-09-02 | 2022-08-11 | 中國鋼鐵股份有限公司 | Steel defect sample preparation method for ultrasonic flaw detector-assisted positioning |
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| CN104569159A (en) * | 2013-10-15 | 2015-04-29 | 济南大学 | Accurate positioning method for concrete crack |
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| CN107102063A (en) * | 2017-06-20 | 2017-08-29 | 东北轻合金有限责任公司 | A kind of 7 ××× line aluminium alloy side ingot casting defect detection on ultrasonic basis |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB930687A (en) * | 1960-10-25 | 1963-07-10 | Atomic Energy Authority Uk | Improvements in or relating to ultrasonic methods of testing |
| US9829468B2 (en) * | 2012-01-12 | 2017-11-28 | Siemens Aktiengesellschaft | Method and device for detecting defects within a test object |
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- 2019-05-15 CN CN201910401152.5A patent/CN110261475B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102944610A (en) * | 2012-11-30 | 2013-02-27 | 湖南省湘电锅炉压力容器检验中心有限公司 | Method for detecting weld defect of stainless steel runner blade of water turbine |
| CN104569159A (en) * | 2013-10-15 | 2015-04-29 | 济南大学 | Accurate positioning method for concrete crack |
| CN104730145A (en) * | 2015-03-06 | 2015-06-24 | 中国航空工业集团公司北京航空材料研究院 | Method for accurately positioning defects of material during ultrasonic detection |
| CN104807884A (en) * | 2015-04-30 | 2015-07-29 | 南京迪威尔高端制造股份有限公司 | Ultrasonic flaw detection grading method for internal defects of steel ingot |
| CN105675727A (en) * | 2016-01-20 | 2016-06-15 | 北京科技大学 | Sensitivity compensation method of defects in defocusing area of ultrasonic focusing probe |
| CN107102063A (en) * | 2017-06-20 | 2017-08-29 | 东北轻合金有限责任公司 | A kind of 7 ××× line aluminium alloy side ingot casting defect detection on ultrasonic basis |
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Address after: MABA Shaogang, Qujiang District, Shaoguan City, Guangdong Province Patentee after: Baowu jiefuyi Special Steel Co.,Ltd. Address before: MABA Shaogang, Qujiang District, Shaoguan City, Guangdong Province Patentee before: BAOSTEEL SPECIAL STEEL SHAOGUAN Co.,Ltd. |
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