CN109374737A - A kind of non-destructive testing technique - Google Patents

A kind of non-destructive testing technique Download PDF

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Publication number
CN109374737A
CN109374737A CN201811352709.2A CN201811352709A CN109374737A CN 109374737 A CN109374737 A CN 109374737A CN 201811352709 A CN201811352709 A CN 201811352709A CN 109374737 A CN109374737 A CN 109374737A
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CN
China
Prior art keywords
thickness
scanning
probe
instrument
detection
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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.)
Pending
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CN201811352709.2A
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Chinese (zh)
Inventor
陶远波
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zunyi Jingkexin Testing Co Ltd
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Zunyi Jingkexin Testing Co Ltd
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Priority to CN201811352709.2A priority Critical patent/CN109374737A/en
Publication of CN109374737A publication Critical patent/CN109374737A/en
Pending legal-status Critical Current

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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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B17/00—Measuring arrangements characterised by the use of infrasonic, sonic or ultrasonic vibrations
    • G01B17/02—Measuring arrangements characterised by the use of infrasonic, sonic or ultrasonic vibrations for measuring thickness
    • 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
    • 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
    • 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
    • G01N2291/2632—Surfaces flat
    • 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
    • G01N2291/267—Welds
    • G01N2291/2675—Seam, butt welding

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)

Abstract

, ultrasonic inspection technics the invention discloses a kind of non-destructive testing techniques, comprise the following steps: 1)；2), adjustment of sensitivity；3) ultrasonic thickness measurement；4), weld seam supersonic detection；4.4) instrument and equipment.Operation of the present invention is simple, low to operator's skill requirement, and product quality is high.

Description

A kind of non-destructive testing technique
Technical field
The present invention relates to a kind of non-destructive testing techniques.
Background technique
Existing non-destructive testing technique processing step and in terms of adjustment there is also certain empirical With it is technical, for the operator newly to start with, it is also necessary to which carrying out a large amount of practice could grasp operation skill, production pledge Measure preferable product.
Summary of the invention
In order to achieve the object of the present invention, the present invention provides the non-destructive testing work that one kind is easy to operate, quick, is easy to operate Skill；
In order to solve the above technical problems, the present invention adopts the following technical scheme: a kind of non-destructive testing technique, comprises the following steps:
1), ultrasonic inspection technics
1.1) standard: JB/T4730.3-2005 is executed；
1.2) scanning mode: for probe vertical in steel plate rolling direction, the parallel lines that spacing is 100mm carry out scanning；Groove periphery Make 100% scanning；
1.3) surface requirements: flaw detection portion faces are polishing to exposing metallic luster；
1.4) instrument and equipment:
1.4.1) PXUT-350, PXUT-320C, CTS-22A, CTS-23 supersonic detector；
1.4.2) pop one's head in: when plate thickness δ≤20mm, double-crystal normal probe, chip area is not less than 150mm2, nominal frequency of popping one's head in 5.0MHz；When δ > 20mm, straight probe of single crystal, circular wafer 14~25mm of diameter phi, pop one's head in nominal frequency 2.5MHz；
1.4.3) couplant: chemical paste or machine oil；
2), adjustment of sensitivity
2.1) when plate thickness≤20mm, with step bar, workpiece uniform thickness position first time bottom wave height is adjusted to full-scale 50%, then 10dB is improved as detection sensitivity；
2.2) when plate thickness > 20mm, it is sensitive as detecting that test block flat-bottom hole first reflection wave height should be adjusted to full scale 50% Degree；
3) ultrasonic thickness measurement
3.1) surface requirements: tested portion faces should degrease, oxide skin, paint, expose metallic luster；
3.1) instrument and equipment: LA-30 or UTM-101H, precision should reach ± (T%+0.1) mm (T is wall thickness)；
3.1.1) couplant: chemical paste or machine oil
3.1.2) instrument regulation: probe is placed in and in the suitable test block of Thickness Measurement by Microwave, is calibrated shown number and test block thickness Unanimously；
3.1.3) when thickness measuring, apply certain pressure, generally 20~30N to probe；6.3.2.6 acceptance requirement: every block of steel plate Five points need to be surveyed, one of point is located at steel plate center, and four additional point is located at steel plate quadrangle, away from steel plate edge away from From for 250mm or so；Institute's drafting board actual measurement thickness cannot be less than the minus deviation that nominal thickness subtracts steel plate thickness；
4), weld seam supersonic detection
4.1) standard: JB/T4730.3-2005 is executed；
4.2) detect a flaw opportunity: after welding terminates 36 hours, the position that need to do ray detection should be after ray detection；
4.3) surface requirements: two sides polishing is clean, and surface roughness reaches 6.3 μm, and every side width is 2TK+50mm；
4.4) instrument and equipment:
4.4.1) PXUT-350, PXUT-320C, CTS-22A, CTS-23 supersonic detector；
4.4.2 it) pops one's head in, K value is chosen referring to table 1；Table 1: the selection of probe K value:
Plate thickness T (mm) K value
8~25 3.0~2.0
> 25~46 2.5~1.5
> 46~120 2.0~1.0
> 120~300 2.0~1.0
4.4.3) test block: CSK-IA, CSK-IIIA；6.3.3.5 couplant: chemical paste or machine oil；
4.4.4) combine adjustment of sensitivity: according to table 2, by probe and instrument used, the measured data in test block is depicted as evaluating Line quantifies line and sentences scrap wire；Scanning sensitivity of detecting a flaw is not lower than the evaluation line sensitivity at maximum sound path；
Table 2: combination adjustment of sensitivity
4.4.5) scanning mode: according to plate thickness, slope type and welding method, sawtooth pattern scanning can be used, lateral scan with oblique angle is put down The basic scanning mode such as front and rear, left and right, corner, circular can be used in row scanning, probe；Scanning is carried out using single side bilateral, is guaranteed Scanning is to whole section of weld joint；When mother metal thickness > 46mm, detected using the direct wave of two-sided bilateral；
4.5) JB/T4730.3-2005 standard requirements, I grades of examinations defect quantitative and ranking: are pressed；
4.6) processing of abnormal phenomenon in detecting: the every detection of instrument should check once for 3 hours, if detection data is more than to allow
Error, then the detection data in first 3 hours should give repetition measurement.
Operation of the present invention is simple, low to operator's skill requirement, and product quality is high.
Specific embodiment
Below with reference to embodiment, the invention will be further described: a kind of non-destructive testing technique comprises the following steps:
1), ultrasonic inspection technics
1.1) standard: JB/T4730.3-2005 is executed；
1.2) scanning mode: for probe vertical in steel plate rolling direction, the parallel lines that spacing is 100mm carry out scanning；Groove periphery Make 100% scanning；
1.3) surface requirements: flaw detection portion faces are polishing to exposing metallic luster；
1.4.1) PXUT-350, PXUT-320C, CTS-22A, CTS-23 supersonic detector；
1.4.2) pop one's head in: when plate thickness δ≤20mm, double-crystal normal probe, chip area is not less than 150mm2, nominal frequency of popping one's head in 5.0MHz；When δ > 20mm, straight probe of single crystal, circular wafer 14~25mm of diameter phi, pop one's head in nominal frequency 2.5MHz；
1.4.3) couplant: chemical paste or machine oil；
2), adjustment of sensitivity
2.1) when plate thickness≤20mm, with step bar, workpiece uniform thickness position first time bottom wave height is adjusted to full-scale
50%, then 10dB is improved as detection sensitivity；
2.2) when plate thickness > 20mm, it is sensitive as detecting that test block flat-bottom hole first reflection wave height should be adjusted to full scale 50% Degree；
3) ultrasonic thickness measurement
3.1) surface requirements: tested portion faces should degrease, oxide skin, paint, expose metallic luster；
3.1) instrument and equipment: LA-30 or UTM-101H, precision should reach ± (T%+0.1) mm (T is wall thickness)；
3.1.1) couplant: chemical paste or machine oil
3.1.2) instrument regulation: probe is placed in and in the suitable test block of Thickness Measurement by Microwave, is calibrated shown number and test block thickness Unanimously；
3.1.3) when thickness measuring, apply certain pressure, generally 20~30N to probe；6.3.2.6 acceptance requirement: every block of steel plate Five points need to be surveyed, one of point is located at steel plate center, and four additional point is located at steel plate quadrangle, away from steel plate edge away from From for 250mm or so；Institute's drafting board actual measurement thickness cannot be less than the minus deviation that nominal thickness subtracts steel plate thickness；
4), weld seam supersonic detection
4.1) standard: JB/T4730.3-2005 is executed；
4.2) detect a flaw opportunity: after welding terminates 36 hours, the position that need to do ray detection should be after ray detection；
4.3) surface requirements: two sides polishing is clean, and surface roughness reaches 6.3 μm, and every side width is 2TK+50mm；
4.4) instrument and equipment:
4.4.1) PXUT-350, PXUT-320C, CTS-22A, CTS-23 supersonic detector；
4.4.2 it) pops one's head in, K value is chosen referring to table 1；Table 1: the selection of probe K value
Plate thickness T (mm) K value
8~25 3.0~2.0
> 25~46 2.5~1.5
> 46~120 2.0~1.0
> 120~300 2.0~1.0
4.4.3) test block: CSK-IA, CSK-IIIA；6.3.3.5 couplant: chemical paste or machine oil；
4.4.4) combine adjustment of sensitivity: according to table 2, by probe and instrument used, the measured data in test block is depicted as evaluating Line quantifies line and sentences scrap wire；Scanning sensitivity of detecting a flaw is not lower than the evaluation line sensitivity at maximum sound path；
Table 2: combination adjustment of sensitivity
4.4.5) scanning mode: according to plate thickness, slope type and welding method, sawtooth pattern scanning can be used, lateral scan with oblique angle is put down The basic scanning mode such as front and rear, left and right, corner, circular can be used in row scanning, probe；Scanning is carried out using single side bilateral, is guaranteed Scanning is to whole section of weld joint；When mother metal thickness > 46mm, detected using the direct wave of two-sided bilateral；
4.5) JB/T4730.3-2005 standard requirements, I grades of examinations defect quantitative and ranking: are pressed；
4.6) processing of abnormal phenomenon in detecting: the every detection of instrument should check once for 3 hours, if detection data is more than to allow to miss Difference, then the detection data in first 3 hours should give repetition measurement.

Claims (1)

1. a kind of non-destructive testing technique, it is characterized in that: comprising the following steps:
1), ultrasonic inspection technics
1.1) standard: JB/T4730.3-2005 is executed；
1.2) scanning mode: for probe vertical in steel plate rolling direction, the parallel lines that spacing is 100mm carry out scanning；Groove periphery Make 100% scanning；
1.3) surface requirements: flaw detection portion faces are polishing to exposing metallic luster；
1.4) instrument and equipment:
1.4.1) PXUT-350, PXUT-320C, CTS-22A, CTS-23 supersonic detector；
1.4.2) pop one's head in: when plate thickness δ≤20mm, double-crystal normal probe, chip area is not less than 150mm2, nominal frequency of popping one's head in 5.0MHz；When δ > 20mm, straight probe of single crystal, circular wafer 14~25mm of diameter phi, pop one's head in nominal frequency 2.5MHz；
1.4.3) couplant: chemical paste or machine oil；
2), adjustment of sensitivity
2.1) when plate thickness≤20mm, with step bar, workpiece uniform thickness position first time bottom wave height is adjusted to full-scale 50%, then 10dB is improved as detection sensitivity；
2.2) when plate thickness > 20mm, it is sensitive as detecting that test block flat-bottom hole first reflection wave height should be adjusted to full scale 50% Degree；
3) ultrasonic thickness measurement
3.1) surface requirements: tested portion faces should degrease, oxide skin, paint, expose metallic luster；
3.1) instrument and equipment: LA-30 or UTM-101H, precision should reach ± (T%+0.1) mm (T is wall thickness)；
3.1.1) couplant: chemical paste or machine oil
3.1.2) instrument regulation: probe is placed in and in the suitable test block of Thickness Measurement by Microwave, is calibrated shown number and test block thickness Unanimously；
3.1.3) when thickness measuring, apply certain pressure, generally 20~30N to probe；6.3.2.6 acceptance requirement: every block of steel plate Five points need to be surveyed, one of point is located at steel plate center, and four additional point is located at steel plate quadrangle, away from steel plate edge away from From for 250mm or so；Institute's drafting board actual measurement thickness cannot be less than the minus deviation that nominal thickness subtracts steel plate thickness；
4), weld seam supersonic detection
4.1) standard: JB/T4730.3-2005 is executed；
4.2) detect a flaw opportunity: after welding terminates 36 hours, the position that need to do ray detection should be after ray detection；
4.3) surface requirements: two sides polishing is clean, and surface roughness reaches 6.3 μm, and every side width is 2TK+50mm；
4.4) instrument and equipment:
4.4.1) PXUT-350, PXUT-320C, CTS-22A, CTS-23 supersonic detector；
4.4.2 it) pops one's head in, K value is chosen；
4.4.3) test block: CSK-IA, CSK-IIIA；6.3.3.5 couplant: chemical paste or machine oil；
4.4.4) combine adjustment of sensitivity: according to table 2, by probe and instrument used, the measured data in test block is depicted as evaluating Line quantifies line and sentences scrap wire；Scanning sensitivity of detecting a flaw is not lower than the evaluation line sensitivity at maximum sound path；
4.4.5) scanning mode: according to plate thickness, slope type and welding method, sawtooth pattern scanning can be used, lateral scan with oblique angle is put down The basic scanning mode such as front and rear, left and right, corner, circular can be used in row scanning, probe；Scanning is carried out using single side bilateral, is guaranteed Scanning is to whole section of weld joint；When mother metal thickness > 46mm, detected using the direct wave of two-sided bilateral；
4.5) JB/T4730.3-2005 standard requirements, I grade of examination defect quantitative and ranking: are pressed；
4.6) processing of abnormal phenomenon in detecting: the every detection of instrument should check once for 3 hours, if detection data is more than to allow to miss Difference, then the detection data in first 3 hours should give repetition measurement.
CN201811352709.2A 2018-11-14 2018-11-14 A kind of non-destructive testing technique Pending CN109374737A (en)

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Publications (1)

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CN109374737A true CN109374737A (en) 2019-02-22

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105628789A (en) * 2014-11-28 2016-06-01 重庆伊曼环保设备有限公司 Nondestructive detection technology

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105628789A (en) * 2014-11-28 2016-06-01 重庆伊曼环保设备有限公司 Nondestructive detection technology

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