CN208736834U - A kind of adjustable-angle TOFD voussoir - Google Patents
A kind of adjustable-angle TOFD voussoir Download PDFInfo
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- CN208736834U CN208736834U CN201821462402.3U CN201821462402U CN208736834U CN 208736834 U CN208736834 U CN 208736834U CN 201821462402 U CN201821462402 U CN 201821462402U CN 208736834 U CN208736834 U CN 208736834U
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- voussoir
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Abstract
The utility model discloses a kind of adjustable-angle TOFD voussoirs.The utility model includes basic voussoir and angle gasket；Basic voussoir upper surface is provided with probe fixed hole up and down, it basic voussoir lower surface and opens in probe fixed hole two sides there are two screw hole I, angle gasket upper surface is provided with probe fixation hole, fixation hole of popping one's head in is the not parallel oblique circular cylinder of upper bottom surface, two about II screw holes, which run through, is arranged in probe fixation hole two sides, basic voussoir lower surface is screwed with angle gasket upper surface to be connected, and screw passes through screw hole II and tightens the screw hole I for being fixed on basic voussoir.The angle gasket of the utility model has different angles available, according to actually detected needs, the adjustable of wedge angle is realized by replacing different angle gaskets, the angle for making up conventional voussoir is insufficient, the recall rate of near surface flaw can be improved in the optimization for further realizing probe parameter.
Description
Technical field
The utility model relates to the TOFD devices in instrument and meter, more particularly, to a kind of adjustable-angle TOFD wedge
Block.
Background technique
TOFD (Time of Flight Diffraction, diffraction time difference method ultrasound detection) technology is widely used in docking
The internal soundness of weld seam detects.The technology has that work efficiency is high, quantitative accurate advantage, but simultaneously there is also surface blind region this
One technology drawback.The defect of near surface is because " hiding " cannot be found in surface blind region, so as to cause the missing inspection of defect,
And the near surface flaw of these missing inspections is very big to the extent of injury of welding product, therefore, it is blind that detection must be taken into consideration in characterization processes
The problem of area.
The angle of probe is the technological parameter of check frequency height most critical, and it is excellent to choose suitable head angle progress parameter
Change, is to reduce check frequency height most efficient method.Because TOFD probe is longitudinal wave oblique probe, only pass through the angle of voussoir
It realizes the angle probe function of longitudinal wave, still, due to some, often only supplies 45 °, 60 °, 70 ° of voussoirs in the market, it is other
The voussoir of angle needs special order, and these conventional angles are difficult to reach the requirement of probe parameter optimization.
Summary of the invention
In order to solve the problems in background technique, the utility model provides a kind of adjustable-angle TOFD voussoir, with full
The testing requirements of sufficient detection technique personnel.
The technical solution adopted in the utility model is as follows:
The utility model includes basic voussoir and angle gasket；Basic voussoir is that vertical section is trapezoidal voussoir, basic wedge
Block upper face center is provided with probe fixed hole up and down, and probe fixed hole is the not parallel oblique circular cylinder of upper bottom surface,
It basic voussoir lower surface and opens in probe fixed hole two sides there are two screw hole I, about I screw hole does not penetrate through；Angle gasket
It is the voussoir of triangle for vertical section, angle gasket upper face center is provided with probe fixation hole up and down, fixation hole of popping one's head in
For the oblique circular cylinder that upper bottom surface is not parallel, two about II screw holes, which run through, is arranged in probe fixation hole two sides；Under basic voussoir
Surface is screwed with angle gasket upper surface to be connected, and the screw hole II that screw passes through angle gasket, which is tightened, is fixed on basis
The screw hole I of voussoir.
The probe fixed hole and probe fixation hole coaxial communication form a single hole arrangements.
Screw thread is carved in probe fixed hole hole wall bottom end, and probe fixation hole hole wall is carved with screw thread, pops one's head in fixed logical
Hole is connected with the screw thread of probe fixation hole is provided commonly for fixed probe.
The wedge surface angle of the basis voussoir is 16 °, and the wedge surface angle of angle gasket has 1 °, 2 °, 3 °, 4 °, 5 °, 6 ° six
Kind, the TOFD voussoir that basic voussoir connects composition with angle gasket has 17 °, 18 °, 19 °, 20 °, 21 °, 22 ° of six kinds of angle differences
Model.
The angle gasket uses material identical with basic voussoir.
The material of the basis voussoir uses organic glass.
It is coupled with probe in the probe fixation hole frequently with machine oil is added, extra machine oil is from basic voussoir and angle
It spends in the gap between gasket and flows out.
The working principle of the utility model adjustable-angle is as follows:
For the utility model for detecting workpiece material and be steel, ultrasonic wave velocity of sound in steel is 5950m/s, the sound in voussoir
Speed is 2400m/s, and according to Snell law, angle is that 16 ° of basic voussoir can make ultrasonic wave enter workpiece with 43 ° of angle.
The Snell law is c1/c2=sin θ1/sinθ2, c in formula1Indicate the velocity of sound in medium 1, c2It indicates
The velocity of sound in medium 2, θ1Indicate the normal angles in medium 1, θ2Indicate the normal angles in medium 2.
Angle gasket has 1 °, 2 °, 3 °, 4 °, 5 °, 6 ° of six kinds of models, and angle gasket and basic voussoir connect and compose angle can
After mode TOFD voussoir, 17 °, 18 °, 19 °, 20 °, 21 °, 22 ° of six kinds of TOFD voussoirs can be formed, can meet ultrasonic wave with 46 °,
50 °, 54 °, 58 °, 63 °, 68 ° of angle enter workpiece.
The utility model has the beneficial effects that
The utility model realizes the adjustable of TOFD wedge angle by replacing different angle gaskets, makes up conventional voussoir
Angle is insufficient, and the optimization of probe parameter is furthermore achieved, the recall rate of near surface flaw can be improved.
Detailed description of the invention
Fig. 1 is the basic voussoir three-dimensional main view of the utility model.
Fig. 2 is the angle gasket three-dimensional main view of the utility model.
Fig. 3 is the three-dimensional main view of the utility model.
Fig. 4 is the three-dimensional main view that test block is detected in the utility model specific implementation process.
In figure: basic voussoir (1), probe fixed hole (2), screw hole I (3), lower surface (5), angle gasket (6), spiral shell
Wire hole II (7), probe fixation hole (8).
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawings and examples.
As shown in Figure 1, it is trapezoidal voussoir that basic voussoir 1, which is vertical section, basic 1 upper surface of voussoir is provided with up and down
It pops one's head in fixed hole 2, probe fixed hole 2 is the not parallel oblique circular cylinder of upper bottom surface, basic 1 lower surface 5 of voussoir and is being popped one's head in
2 two sides of fixed hole are opened there are two screw hole I 3, and about I 3 screw hole does not penetrate through.
As shown in Fig. 2, angle gasket 6 is the voussoir that vertical section is triangle, 6 upper surface of angle gasket is provided with up and down
Probe fixation hole 8, probe fixation hole 8 is the not parallel oblique circular cylinder of upper bottom surface, and two about II 7 screw holes, which run through, to be arranged in
Probe 8 two sides of fixation hole；Basic 1 lower surface of voussoir is screwed with 6 upper surface of angle gasket to be connected, and screw passes through angle
The screw hole II 7 of gasket 6 tightens the screw hole I 3 for being fixed on basic voussoir 1.
As shown in Figure 3: adjustable TOFD voussoir includes basic voussoir 1 and angle gasket 6, pop one's head in fixed hole 2 and probe
Fixation hole 8 is coaxially connected to form an entirety, and screw thread is carved in the bottom end of probe fixed hole 2, is carved with spiral shell inside fixation hole 8 of popping one's head in
The screw thread of line, probe fixed hole 2 and fixation hole 8 of popping one's head in is used to fixed probe.
Specific embodiment of the utility model is as follows:
Step 1: as shown in figure 4, the test block weld seam to thickness 20mm carries out TOFD detection, using diameter for the fiber crops of 1.5mm
Flower is bored to drill in test block upper surface, and the depth in hole is 4.0mm.According to the calculation formula of check frequency height, in conjunction with other optimal
The technological parameter of change, the head angle calculated when guaranteeing acoustic beam all standing and check frequency height minimum is 58 °, and frequency is
8MHz, wafer diameter 2mm.This technological parameter check frequency height calculated is 4.0mm.
Step 2: ultrasonic wave need to be entered in workpiece known to step 1 with 58 °, be calculated according to Snell law, corresponding TO FD wedge
The angle of block is 20 °.1 angle of basic voussoir of the utility model is 16 °, and therefore, to add angle gasket 6 is 4 °, is just able to satisfy
The angle for forming TOFD voussoir is 20 °.
Step 3: basic voussoir 1 being connected with 4 ° of angle gaskets 6 of model by screw, is fixed after connection in probe
A little machine oil is added in hole 8, in probe threaded through bores, extra machine oil is oozed out from faying face gap.Connected with probe signal line
Probe and detecting instrument are connect, detection is come into effect, ultrasonic wave enters workpiece with 58 °, meets technique requirement.
Step 4: after work, the map analyzed by software can clearly show that the image in hole, and read depth
For 4.01mm, almost without error compared with the actual depth 4.0mm of step 1.
Claims (6)
1. a kind of adjustable-angle TOFD voussoir, which is characterized in that including basic voussoir (1) and angle gasket (6)；Basic voussoir
It (1) be vertical section is trapezoidal voussoir, basic voussoir (1) upper face center is provided with probe fixed hole (2) up and down, visits
Head fixed hole (2) is the not parallel oblique circular cylinder of upper bottom surface, basic voussoir (1) lower surface (5) and in probe fixed hole (2)
It opens there are two screw hole I (3) two sides；Angle gasket (6) is the voussoir that vertical section is triangle, in angle gasket (6) upper surface
Centre is provided with probe fixation hole (8), and probe fixation hole (8) is the not parallel oblique circular cylinder of upper bottom surface, and two screw holes II (7) are up and down
Through be arranged in probe fixation hole (8) two sides；Basic voussoir (1) lower surface is screwed with angle gasket (6) upper surface
It is connected, the screw hole II (7) that screw passes through angle gasket (6) tightens the screw hole I (3) for being fixed on basic voussoir (1).
2. adjustable-angle TOFD voussoir according to claim 1, which is characterized in that the probe fixed hole (2)
A single hole arrangements are formed with probe fixation hole (8) coaxial communication.
3. adjustable-angle TOFD voussoir according to claim 1, which is characterized in that probe fixed hole (2) hole wall bottom
Screw thread is carved at end, and probe fixation hole (8) hole wall is carved with screw thread, and probe fixed hole (2) and the screw thread of probe fixation hole (8) are held in the mouth
It connects and is provided commonly for fixed probe.
4. adjustable-angle TOFD voussoir according to claim 1, which is characterized in that the wedge surface of the basis voussoir (1)
Angle is 16 °, and the wedge surface angle of angle gasket (6) has 1 °, 2 °, 3 °, 4 °, 5 °, 6 ° six kinds, basic voussoir (1) and angle gasket
(6) the TOFD voussoir of connection composition has 17 °, 18 °, 19 °, 20 °, 21 °, 22 ° of different models of six kinds of angles.
5. adjustable-angle TOFD voussoir according to claim 1, which is characterized in that the angle gasket (6) uses
Material identical with basic voussoir.
6. adjustable-angle TOFD voussoir according to claim 1, which is characterized in that the material of the basis voussoir uses
Organic glass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821462402.3U CN208736834U (en) | 2018-09-07 | 2018-09-07 | A kind of adjustable-angle TOFD voussoir |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821462402.3U CN208736834U (en) | 2018-09-07 | 2018-09-07 | A kind of adjustable-angle TOFD voussoir |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208736834U true CN208736834U (en) | 2019-04-12 |
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ID=66034129
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821462402.3U Active CN208736834U (en) | 2018-09-07 | 2018-09-07 | A kind of adjustable-angle TOFD voussoir |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111721838A (en) * | 2020-05-26 | 2020-09-29 | 江苏省特种设备安全监督检验研究院 | Probe fixing seat |
-
2018
- 2018-09-07 CN CN201821462402.3U patent/CN208736834U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111721838A (en) * | 2020-05-26 | 2020-09-29 | 江苏省特种设备安全监督检验研究院 | Probe fixing seat |
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