CN104713949A - Ultrasonic testing method for full penetration welds of rebars - Google Patents
Ultrasonic testing method for full penetration welds of rebars Download PDFInfo
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- CN104713949A CN104713949A CN201510158024.4A CN201510158024A CN104713949A CN 104713949 A CN104713949 A CN 104713949A CN 201510158024 A CN201510158024 A CN 201510158024A CN 104713949 A CN104713949 A CN 104713949A
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Abstract
The invention provides an ultrasonic testing method for full penetration welds of rebars. The method comprises the specific steps of selecting proper probes and processing a reference block, verifying sensitivity by utilizing the reference block after the surface condition is confirmed to reach the detection condition, then projecting a weld area to the back surface of a steel plate, scanning base metal and welds at the weld area at the back surface of the steel plate, finally assessing incontinuity in reference to a sensitivity curve after incontinuity size and position are finally measured, and determining whether the incontinuity is qualified or not. The ultrasonic testing method for the full penetration welds of the rebars disclosed by the invention is applicable to ultrasonic testing of the full penetration welds of the rebars.
Description
Technical field
The present invention relates to a kind of ultrasonic detection method can applied reinforcing bar full penetration weld and detect, be particularly useful for carrying out ultrasound examination to AP1000 nuclear island reinforcing bar full penetration weld.
Background technology
The reinforcement welding form of current nuclear power station is all fillet weld and partial penetrated weld seam, does not have the weld seam form of full penetration.The part reinforcing bar of AP1000 nuclear power station adopts the Type of Welding of full penetration, and design side requires to carry out carrying out ultrasound examination to it.The detection technique of rebar of original nuclear power station can not be applied to AP1000 nuclear power station.
Current existing ultrasonic detection technology mainly for the detection of sheet material and pipe welding seam, the not special detection technique for reinforcing bar full penetration weld.Therefore, existing ultrasonic detection technology can not meet the requirement of AP1000 nuclear power station reinforcing bar ultrasound examination.
Summary of the invention
The object of this invention is to provide a kind of ultrasonic detection method being applicable to reinforcing bar full penetration weld and detecting.
In order to achieve the above object, technical scheme of the present invention there is provided a kind of ultrasonic detection method for reinforcing bar full penetration weld, and reinforcing bar is welded on mother metal by full penetration weld, it is characterized in that, comprises the steps:
The first step, select suitable straight probe of single crystal or double-crystal normal probe as the probe of ultrasonic scanning;
Second step, detection weld seam before, probe is utilized to carry out the ultrasonic testing with or without laminar type discontinuity reflection to the mother metal region including welded seam area, if disappear at mother metal area discover Bottom echo, or the instruction that is equal to or greater than former Bottom echo height is had in a certain position, and affect normal weld seam scanning process, then must determine its size, position and the degree of depth;
3rd step, welded seam area is projected in the one side of mother metal weld seam dorsad, and this view field is marked on the face of mother metal weld seam dorsad, the reference sensitivity of ultrasonic scanning is set, the basis of reference sensitivity increases corresponding dB number as Scanning sensitivity, under Scanning sensitivity, utilize probe to carry out 100% scanning to view field, and determine discontinuous size and position, wherein, the regulative mode of reference sensitivity is:
Select material test block one and the reference block two as a comparison with reinforcing bar and mother metal with identical type and Technology for Heating Processing, embed standard reflection body in reference block one and the joint of reference block two, utilize standard reflection body to regulate reference sensitivity;
4th step, qualification determination, if the amplification level of uncontinuity is X, then
If X > is SSL+AdB, then this weld seam is judged to be defective, and SSL is reference sensitivity curve, and A is positive integer;
If SSL≤X≤SSL+AdB, if then the length of uncontinuity is no more than 20mm, it is qualified that this weld seam is judged to be, otherwise this weld seam is judged to be defective;
If DRL < X < is SSL, if then the length of uncontinuity is no more than 50mm, it is qualified that this weld seam is judged to be, otherwise this weld seam is judged to be defective, and DRL is the sensitivity curve lower than SSL BdB, and B is positive integer;
If X≤DRL, then this weld seam be judged to be qualified.
Preferably, described A=5.
Preferably, described B=6.
A kind of ultrasonic detection method provided by the invention can be used for detecting reinforcing bar full penetration weld.
Accompanying drawing explanation
Fig. 1 is steel plate in the present embodiment and reinforcing bar full penetration weld form;
Fig. 2 A is the contrast block form in the present embodiment;
Fig. 2 B is that the A-A of Fig. 2 A is to cut-open view;
Fig. 3 is detection method schematic diagram;
Fig. 4 is sensitivity curve.
Embodiment
For making the present invention become apparent, hereby with preferred embodiment, and accompanying drawing is coordinated to be described in detail below.
The present embodiment, for AP1000 nuclear island reinforcing bar full penetration weld, further illustrates a kind of ultrasonic detection method provided by the invention.
In AP1000 nuclear island, steel plate 3 is T-shaped full penetration weld with the welding joint of reinforcing bar 1, and wherein reinforcing bar 1 is screw-thread steel, and specific constructive form is shown in Fig. 1.
Before testing, should be qualified through visual examination by inspection surface, the surface of all probe contacts must welding splashings, dirt, lipid, oils (except couplant), paint and loose oxide skin, and must have and allow closely-coupled profile.The irregular status on surface must not affect correctness and the integrality of testing result, otherwise should do suitable process.
Due to scanning cannot be carried out from reinforcing bar 1, so adopt the rear surface regions of weld seam on steel plate 3 to carry out scanning.Compared with the ultrasonic detection method of routine, probe of the present invention is different with the selection of reference block, and concrete steps are as follows:
The first step, select suitable straight probe of single crystal or double-crystal normal probe as the probe 4 of ultrasonic scanning.
Second step, detection weld seam before, utilize probe 4 to the mother metal region including welded seam area carry out with or without laminar type discontinuity reflection ultrasonic testing, composition graphs 3, the mother metal region in the present embodiment is D1.If disappear at mother metal area discover Bottom echo, or the instruction having to be equal to or greater than former Bottom echo height in a certain position, and affect normal weld seam scanning process, then must determine its size, position and the degree of depth.
3rd step, to be projected to by welded seam area in the one side of mother metal weld seam dorsad, and to mark this view field, composition graphs 3 on the face of mother metal weld seam dorsad, the view field in the present embodiment is D2.The reference sensitivity of ultrasonic scanning is set, the basis of reference sensitivity increases corresponding dB number as Scanning sensitivity, under Scanning sensitivity, utilize probe to carry out 100% scanning to view field, and determine discontinuous size and position.Wherein, the regulative mode of reference sensitivity is:
Composition graphs 2A and Fig. 2 B, select material test block one and the reference block two as a comparison with reinforcing bar 1 and steel plate 3 with identical type and Technology for Heating Processing, embed standard reflection body 2 in reference block one and the joint of reference block two, utilize standard reflection body 2 pairs of reference sensitivities to regulate.
The degree of depth (horizontal scanning) should use the indicated value of multiple reflections gained, and these reflections are from the mother metal of welded seam area non-in reference block.Inspection mother metal interlayer (uncontinuity) time, calibration accuracy should its actual (real) thickness ± 5% within; Then should within ± 2% when determining size (highly) and the position of uncontinuity.
Composition graphs 4, the 4th step, qualification determination (see table 1).When uncontinuity is greater than transducer, Bottom echo disappears completely, and decreased amplitude 6dB, with locating the edge that usually can be defined as uncontinuity corresponding to transducer center line.But, approximate size assessment to be carried out to the reflecting body being less than transducer dimensions, transducer is moved towards uncontinuity position, until there is instruction on screen.Now pop one's head in residing for front end that be the edge of uncontinuity.If the amplification level of uncontinuity is X, then
If X > is SSL+5dB, then this weld seam is judged to be defective, and SSL is reference sensitivity curve;
If SSL≤X≤SSL+5dB, if then the length of uncontinuity is no more than 20mm, it is qualified that this weld seam is judged to be, otherwise this weld seam is judged to be defective;
If DRL < X < is SSL, if then the length of uncontinuity is no more than 50mm, it is qualified that this weld seam is judged to be, otherwise this weld seam is judged to be defective, and DRL is the sensitivity curve lower than SSL 6dB, and B is positive integer;
If X≤DRL, then this weld seam be judged to be qualified.
Table 1 acceptance criteria
Claims (3)
1., for a ultrasonic detection method for reinforcing bar full penetration weld, reinforcing bar (1) is welded on mother metal by full penetration weld, it is characterized in that, comprises the steps:
The first step, select suitable straight probe of single crystal or double-crystal normal probe as the probe of ultrasonic scanning;
Second step, detection weld seam before, probe is utilized to carry out the ultrasonic testing with or without laminar type discontinuity reflection to the mother metal region including welded seam area, if disappear at mother metal area discover Bottom echo, or the instruction that is equal to or greater than former Bottom echo height is had in a certain position, and affect normal weld seam scanning process, then must determine its size, position and the degree of depth;
3rd step, welded seam area is projected in the one side of mother metal weld seam dorsad, and this view field is marked on the face of mother metal weld seam dorsad, the reference sensitivity of ultrasonic scanning is set, the basis of reference sensitivity increases corresponding dB number as Scanning sensitivity, under Scanning sensitivity, utilize probe to carry out 100% scanning to view field, and determine discontinuous size and position, wherein, the regulative mode of reference sensitivity is:
Select material test block one and the reference block two as a comparison with reinforcing bar (1) and mother metal with identical type and Technology for Heating Processing, embed standard reflection body (2) in reference block one and the joint of reference block two, utilize standard reflection body (2) to regulate reference sensitivity;
4th step, qualification determination, if the amplification level of uncontinuity is X, then
If X > is SSL+AdB, then this weld seam is judged to be defective, and SSL is reference sensitivity curve, and A is positive integer;
If SSL≤X≤SSL+AdB, if then the length of uncontinuity is no more than 20mm, it is qualified that this weld seam is judged to be, otherwise this weld seam is judged to be defective;
If DRL < X < is SSL, if then the length of uncontinuity is no more than 50mm, it is qualified that this weld seam is judged to be, otherwise this weld seam is judged to be defective, and DRL is the sensitivity curve lower than SSL BdB, and B is positive integer;
If X≤DRL, then this weld seam be judged to be qualified.
2. a kind of ultrasonic detection method for reinforcing bar full penetration weld as claimed in claim 1, is characterized in that, described A=5.
3. a kind of ultrasonic detection method for reinforcing bar full penetration weld as claimed in claim 1, is characterized in that, described B=6.
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| CN201510158024.4A CN104713949B (en) | 2015-04-03 | 2015-04-03 | A kind of ultrasonic detection method for reinforcing bar full penetration weld |
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| CN201510158024.4A CN104713949B (en) | 2015-04-03 | 2015-04-03 | A kind of ultrasonic detection method for reinforcing bar full penetration weld |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105717199A (en) * | 2016-01-26 | 2016-06-29 | 陆雷俊 | Ultrasonic transverse and longitudinal section element-separating detection method for stainless steel and nickel-based steel weld joint |
| CN108828075A (en) * | 2018-07-04 | 2018-11-16 | 山东汇科工程检测有限公司 | Composite board soldering joint compares test plate (panel) to the verification method of ultrasound examination transmission rate |
| CN109507301A (en) * | 2018-12-17 | 2019-03-22 | 西安建筑科技大学 | Measure the test block of comparison reflector and method of thicker plate material weld defect |
| CN113484423A (en) * | 2021-06-22 | 2021-10-08 | 中铁山桥集团有限公司 | T-shaped welded joint TOFD detection reference block and detection method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1594415A1 (en) * | 1988-10-31 | 1990-09-23 | Институт Электросварки Им.Е.О.Патона | Method of ultrasonic inspection of tee welded joints with full penetration of wall |
| JPH10221309A (en) * | 1997-02-10 | 1998-08-21 | Kajima Corp | Determining method of welded part, measuring method of unwelded part, and inspecting device of the welded part |
| CN101441198A (en) * | 2008-11-28 | 2009-05-27 | 中国航天空气动力技术研究院 | Ultrasonic wave detection method of wind tunnel body structure butt-jointed seam |
-
2015
- 2015-04-03 CN CN201510158024.4A patent/CN104713949B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1594415A1 (en) * | 1988-10-31 | 1990-09-23 | Институт Электросварки Им.Е.О.Патона | Method of ultrasonic inspection of tee welded joints with full penetration of wall |
| JPH10221309A (en) * | 1997-02-10 | 1998-08-21 | Kajima Corp | Determining method of welded part, measuring method of unwelded part, and inspecting device of the welded part |
| CN101441198A (en) * | 2008-11-28 | 2009-05-27 | 中国航天空气动力技术研究院 | Ultrasonic wave detection method of wind tunnel body structure butt-jointed seam |
Non-Patent Citations (4)
| Title |
|---|
| 崔卫民 等: "钢结构全熔透T型及角接接头的超声波检测", 《山西建筑》 * |
| 胡城: "钢构件全熔透角焊缝的超声波检测", 《广船科技》 * |
| 郑晖 等: "《中华人民共和国国家标准GB/T 11354-2013》", 18 September 2013 * |
| 顾正学 等: "全熔透T形焊缝超声波探伤在钢结构中的应用", 《钢结构》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105717199A (en) * | 2016-01-26 | 2016-06-29 | 陆雷俊 | Ultrasonic transverse and longitudinal section element-separating detection method for stainless steel and nickel-based steel weld joint |
| CN105717199B (en) * | 2016-01-26 | 2018-11-16 | 陆雷俊 | A kind of stainless steel, Ni-based steel the welding line ultrasonic first detection method in face point in length and breadth |
| CN108828075A (en) * | 2018-07-04 | 2018-11-16 | 山东汇科工程检测有限公司 | Composite board soldering joint compares test plate (panel) to the verification method of ultrasound examination transmission rate |
| CN109507301A (en) * | 2018-12-17 | 2019-03-22 | 西安建筑科技大学 | Measure the test block of comparison reflector and method of thicker plate material weld defect |
| CN109507301B (en) * | 2018-12-17 | 2021-01-26 | 西安建筑科技大学 | Contrast reflector test block and method for determining weld defects of thick plate |
| CN113484423A (en) * | 2021-06-22 | 2021-10-08 | 中铁山桥集团有限公司 | T-shaped welded joint TOFD detection reference block and detection method |
| CN113484423B (en) * | 2021-06-22 | 2023-02-21 | 中铁山桥集团有限公司 | T-shaped welded joint TOFD detection reference block and detection method |
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| CN104713949B (en) | 2018-04-20 |
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Effective date of registration: 20210126 Address after: No. 29 Hong Cao Road, Xuhui District, Shanghai Patentee after: SHANGHAI NUCLEAR ENGINEERING RESEARCH & DESIGN INSTITUTE Co.,Ltd. Address before: 200233 Building 2, 888 Tianlin Road, Xuhui District, Shanghai Patentee before: STATE NUCLEAR POWER ENGINEERING Co. |
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Address after: No. 29 Hong Cao Road, Xuhui District, Shanghai Patentee after: Shanghai Nuclear Engineering Research and Design Institute Co.,Ltd. Address before: No. 29 Hong Cao Road, Xuhui District, Shanghai Patentee before: SHANGHAI NUCLEAR ENGINEERING RESEARCH & DESIGN INSTITUTE Co.,Ltd. |