CN203595688U - T-shaped welded joint TOFD (Time of Flight Diffraction) detection comparison test block - Google Patents
T-shaped welded joint TOFD (Time of Flight Diffraction) detection comparison test block Download PDFInfo
- Publication number
- CN203595688U CN203595688U CN201320805457.0U CN201320805457U CN203595688U CN 203595688 U CN203595688 U CN 203595688U CN 201320805457 U CN201320805457 U CN 201320805457U CN 203595688 U CN203595688 U CN 203595688U
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- tofd
- reference block
- test block
- comparison test
- wing plate
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Abstract
A T-shaped welded joint TOFD (Time of Flight Diffraction) detection comparison test block is suitable for the check of an instrument during T-shaped welding seam TOFD detection. The comparison test block is formed by cutting a steel board according to the practical welding angle dimension line of a checked welding seam, the thickness of the steel board is greater than the width of a TOFD probe wedge, three through holes being Phi 2 mm in diameter are located in a simulated T-shaped joint region of the comparison test block from top to bottom, which are used for identifying the covering of a TOFD detection acoustic beam, and meanwhile used for regulating the detection sensitivity. The comparison test block is easy to process, convenient to carry, and can fully satisfy the T-shaped welding seam TOFD detection demand.
Description
Technical field
The utility model belongs to the reference block that Ultrasonic Detection is used, and particularly a kind of T-shaped welding joint TOFD detects the reference block of use.
Background technology
At present, NB/T47013.10 " bearing device Non-Destructive Testing Part X: diffraction time difference method (TOFD) Ultrasonic Detection " does not make regulation to the detection of T-shaped welding joint, the existing detection for T-shaped welding joint adopts conventional Ultrasound wave technology more, utilize pulse reflection method to detect, need to be in multiple positions of T-shaped welding joint when detection, use the ultrasonic probe of different K values to detect, detect loaded down with trivial details, easily cause defect undetected, it is high that TOFD detection technique has work efficiency, defect detection ability is strong, positioning precision advantages of higher, but must formulate corresponding technique to the detection of T-shaped welding joint and can complete the covering completely of Welded Joints to guarantee acoustic beam, reference block described in the utility model can be verified the acoustic beam spreadability of T-shaped welding joint TOFD characterization processes, assist to formulate TOFD characterization processes, utilize this reference block can complete the adjusting of detection sensitivity simultaneously, can greatly improve on-the-spot work efficiency and defect detection rate.
Utility model content
The purpose of this utility model is to provide a kind of T-shaped welding joint TOFD to detect reference block, and this reference block can be used in assists to formulate TOFD characterization processes, and checking TOFD detects the coverage of acoustic beam, simultaneously for regulating detection sensitivity.
The purpose of this utility model realizes by following invention mode:
A kind of T-shaped welding joint TOFD detects reference block, it is characterized in that: this reference block is formed by steel plate warp cutting processing, have horizontal wing plate, with horizontal wing plate web connected vertically, there are left leg and backhand welding angle in the left and right corner being connected with web at wing plate; The thickness T of steel plate is greater than the voussoir width of TOFD probe; Wing plate thickness T 1, web thickness T2 and the fillet weld size of in reference block, simulating T-shaped welding joint are identical with the corresponding size of workpiece to be checked; There are three Φ 2mm through holes in the T-shaped welding joint of simulation region in reference block, three Φ 2mm through holes lay respectively on the center line of two toe of weld lines of simulation wing plate, two simulation fillet weld sectional areas are larger one is upper, and apart from hypotenuse mid point 1mm place, simulate on the center line of two toe of weld lines of web.
Advantage of the present utility model:
This reference block forms by steel plate line cutting processing, easy to process, the consistent size of its processing dimension and actual welding joint to be checked, and arranging of three Φ 2mm through holes can detect the validity that acoustic beam covers by effective checking TOFD, therefore can guarantee that the defect in welding joint effectively detects, detect without frequent replacing probe as conventional Ultrasound, greatly improved the detecting property of work on the spot efficiency and defect.
Accompanying drawing explanation:
Fig. 1 is the front elevation that the T-shaped welding joint TOFD of the utility model detects reference block.
Fig. 2 is the vertical view that the T-shaped welding joint TOFD of the utility model detects reference block.
In figure: the through hole, 3 that the through hole, 2 on the center line of two toe of weld lines of 1 wing plate is arranged on larger one of two simulations fillet weld sectional area S1 and S2 is positioned at through hole, T steel plate thickness, T1 wing plate thickness, T2 web thickness, the wide size of the left leg of K1, the high size of the left leg of K2, K3 backhand welding angular width size, the high size in K4 backhand welding angle on the center line of simulating two toe of weld lines of web.
Embodiment
A kind of T-shaped welding joint TOFD detects reference block as shown in the figure, this reference block is formed by steel plate warp cutting processing, steel plate thickness T is greater than the width of TOFD probe voussoir, the T-shaped welding joint type of reference block simulating shape shape, its web thickness T2, wing plate thickness T 1, fillet weld size: the wide size K1 of left leg, the high size K2 of left leg, backhand welding angular width size K3, the high size K4 in backhand welding angle require consistent with actual T-shaped welding joint to be checked.
Described reference block should be greater than the center distance of TOFD probe in the length of wing plate.
Described reference block has three Φ 2mm through holes in simulation in welding joint region, simulates respectively the covering of lack of penetration, sidewall incomplete fusion and checking TOFD probe acoustic beam, assists to formulate characterization processes.
T-shaped welding joint TOFD detects reference block, formed by steel plate warp cutting processing, the thickness T of steel plate is greater than the voussoir width of TOFD probe, the thickness T 1 of simulating wing plate and simulation web in reference block and T2 are identical with the thickness of actual web and wing plate respectively, simulation fillet weld size K1 in reference block, K2, K3, K4 is identical with each fillet weld size of actual T-shaped welding joint to be checked, in the region of the T-shaped welding joint of simulation, there are three Φ 2mm through holes, wherein through hole 1 is positioned on the center line of two toe of weld lines of simulation wing plate, through hole 3 is positioned on the center line of two toe of weld lines of simulation web, through hole 2 is arranged on two simulation fillet weld sectional area S1 and larger one of S2, apart from hypotenuse mid point 1mm place.
Before examinations, select suitable TOFD probe and voussoir, be placed on wing plate, regulate probe spacing, there is the diffracted wave of through hole 1, through hole 2 and through hole 3, illustrate that now acoustic beam can complete the covering to T-shaped welding joint, wherein weak diffracted signal is adjusted to the 40%-80% of screen, now detection sensitivity mixes up.
Claims (1)
1. a T-shaped welding joint TOFD detects reference block, it is characterized in that: this reference block is formed by steel plate warp cutting processing, have horizontal wing plate, with horizontal wing plate web connected vertically, there are left leg and backhand welding angle in the left and right corner being connected with web at wing plate; The thickness T of steel plate is greater than the voussoir width of TOFD probe; Wing plate thickness T 1, web thickness T2 and the fillet weld size of in reference block, simulating T-shaped welding joint are identical with the corresponding size of workpiece to be checked; There are three Φ 2mm through holes in the T-shaped welding joint of simulation region in reference block, three Φ 2mm through holes lay respectively on the center line of two toe of weld lines of simulation wing plate, two simulation fillet weld sectional areas are larger one is upper, and apart from hypotenuse mid point 1mm place, simulate on the center line of two toe of weld lines of web.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320805457.0U CN203595688U (en) | 2013-12-06 | 2013-12-06 | T-shaped welded joint TOFD (Time of Flight Diffraction) detection comparison test block |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320805457.0U CN203595688U (en) | 2013-12-06 | 2013-12-06 | T-shaped welded joint TOFD (Time of Flight Diffraction) detection comparison test block |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203595688U true CN203595688U (en) | 2014-05-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320805457.0U Expired - Fee Related CN203595688U (en) | 2013-12-06 | 2013-12-06 | T-shaped welded joint TOFD (Time of Flight Diffraction) detection comparison test block |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203595688U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104215693A (en) * | 2014-09-30 | 2014-12-17 | 中国能源建设集团湖南省火电建设公司 | TOFD (Time of Flight Diffraction) detection method for butt weld defects of steel structures and middle-thick-walled tubes of power station |
| CN109100427A (en) * | 2018-09-05 | 2018-12-28 | 中国电建集团山东电力建设第工程有限公司 | A kind of detection test block of small diameter tube Nozzle weld phased array and its application method |
| CN109765301A (en) * | 2019-03-21 | 2019-05-17 | 江苏省特种设备安全监督检验研究院 | It is a kind of can obstacle detouring TOFD detection voussoir |
| CN109780453A (en) * | 2019-02-21 | 2019-05-21 | 北京隆盛泰科石油管科技有限公司 | Reference block is used in the detection of oil-gas pipeline Type B sleeve angle weld joint ultrasonic |
| CN110568070A (en) * | 2019-09-09 | 2019-12-13 | 西安特种设备检验检测院 | Method, device, equipment and storage medium for detecting welding joint |
| CN110834150A (en) * | 2019-12-02 | 2020-02-25 | 中车长春轨道客车股份有限公司 | Laser-arc hybrid welding ultrasonic detection process for thick plates of bogies |
| WO2020047775A1 (en) * | 2018-09-05 | 2020-03-12 | 中国电建集团山东电力建设第一工程有限公司 | Phase control array detection test block for tube socket fillet weld of small-diameter tube and use method therefor |
| 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 |
-
2013
- 2013-12-06 CN CN201320805457.0U patent/CN203595688U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104215693A (en) * | 2014-09-30 | 2014-12-17 | 中国能源建设集团湖南省火电建设公司 | TOFD (Time of Flight Diffraction) detection method for butt weld defects of steel structures and middle-thick-walled tubes of power station |
| CN109100427A (en) * | 2018-09-05 | 2018-12-28 | 中国电建集团山东电力建设第工程有限公司 | A kind of detection test block of small diameter tube Nozzle weld phased array and its application method |
| WO2020047775A1 (en) * | 2018-09-05 | 2020-03-12 | 中国电建集团山东电力建设第一工程有限公司 | Phase control array detection test block for tube socket fillet weld of small-diameter tube and use method therefor |
| CN109780453A (en) * | 2019-02-21 | 2019-05-21 | 北京隆盛泰科石油管科技有限公司 | Reference block is used in the detection of oil-gas pipeline Type B sleeve angle weld joint ultrasonic |
| CN109765301A (en) * | 2019-03-21 | 2019-05-17 | 江苏省特种设备安全监督检验研究院 | It is a kind of can obstacle detouring TOFD detection voussoir |
| CN109765301B (en) * | 2019-03-21 | 2023-08-22 | 江苏省特种设备安全监督检验研究院 | But voussoir is used in TOFD detection of barrier |
| CN110568070A (en) * | 2019-09-09 | 2019-12-13 | 西安特种设备检验检测院 | Method, device, equipment and storage medium for detecting welding joint |
| CN110834150A (en) * | 2019-12-02 | 2020-02-25 | 中车长春轨道客车股份有限公司 | Laser-arc hybrid welding ultrasonic detection process for thick plates of bogies |
| 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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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140514 Termination date: 20181206 |
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| CF01 | Termination of patent right due to non-payment of annual fee |