CN2157518Y - Water-film coupling double-crystal plate probe for supersonic flaw detecting - Google Patents
Water-film coupling double-crystal plate probe for supersonic flaw detecting Download PDFInfo
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- CN2157518Y CN2157518Y CN 93209067 CN93209067U CN2157518Y CN 2157518 Y CN2157518 Y CN 2157518Y CN 93209067 CN93209067 CN 93209067 CN 93209067 U CN93209067 U CN 93209067U CN 2157518 Y CN2157518 Y CN 2157518Y
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- crystal plate
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- double crystal
- probe
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Abstract
The utility model relates to a supersonic water film coupling double crystal plate probe for flaw detection. The performance of the existing water film coupling double crystal plate probe for flaw detection for the steel plates with the thickness of 6 to 20mm is not ideal and is not suitable for the flaw detection of the steel plate with the thickness of more than 20mm. The utility model provides a double crystal plate probe with the best combination of various parameters, and the performance of the double crystal plate probe completely satisfies the requirements of the international universal standard of the ultrasonic flaw detection of the steel plates. The utility model has the parameters that the thickness of a sound isolating layer a is from 0.5 to 1.2mm, the width b of a crystal plate is from 4 to 6mm, the distance c between the crystal plate and the isolating layer is from 0.2 to 0.3mm, the thickness d of a delay block is from 12 to 15mm, the ridge angle c is from 6 to 8 DEG, and the length f of the crystal plate is from 20 to 25mm.
Description
The utility model belongs to steel plate nondestructive examination field, especially for 6～20mm or thicker slab UT (Ultrasonic Testing) with the moisture film double crystal probe that is coupled.
Along with market is more and more higher to the requirement of steel product quality, various countries have all formulated the UT (Ultrasonic Testing) standard to plate quality.As GB/T2970, JISG0801, standards such as JBZ74003 are all stipulated, when steel plate thickness is 6～20mm, must detect a flaw with double crystal probe, and this kind probe has been stipulated four technical requirements, the most important thing is that wherein distance one wave amplitude family curve flatness must not surpass 6dB.These standards are general in the world.
Present employed moisture film coupling double crystal probe is difficult to satisfy fully the requirement of act.std, more is difficult to satisfy stricter requirement.When these double crystal probes were 19mm at the detection thickness of slab, the wave height fall was that flatness just reaches 6dB, and when thickness of slab continued to increase, wave height descended fast.Therefore can only survey 20mm with interior steel plate with present double crystal probe.
The UT (Ultrasonic Testing) that the purpose of this utility model provides a kind of function admirable is with the moisture film double crystal probe that is coupled, by optimum matching to each parameter of double crystal probe, the reasonable distribution that realizes sound field makes it to meet and exceed the requirement of standards such as GB/T2970, JISG0801 to the double crystal probe defined to improve the performance of probe.
According to the utility model, each parameter to double crystal probe, be sound insulating layer thickness, wafer to the best value and the assembly of the distance of sound insulating layer, ridge angle, wafer width, wafer length, delay block thickness, realize the reasonable distribution of sound field, thereby improve the performance of double crystal probe.
Utilize double crystal probe of the present utility model, at the surface echo height, detect sensitivity and effectively under the sound Mi Kuandu conformance with standard defined terms, its distance one wave height family curve is in 6～50mm thickness range, flatness is no more than 6dB, has realized the once breakthrough of double crystal probe technology.
Double crystal probe function admirable of the present utility model can not only satisfy the act.std requirement, and can will survey thickness of slab and expand 50mm under the condition of not using depth compensation.
Below in conjunction with accompanying drawing the utility model is elaborated.
Fig. 1 is each parameter synoptic diagram of moisture film coupling double crystal probe.
Fig. 2 is the distance-wave amplitude family curve of this kind double crystal probe.
As shown in Figure 1, the characteristic of double crystal probe is to be determined by each parameter of popping one's head in, according to the utility model, the parameter value of double crystal probe is: sound insulating layer thickness a=0.5～1.2mm, the wafer width is b=4～6mm, and wafer is to the distance c=0.2～0.3mm of sound insulating layer, delay block thickness d=12～15mm, ridge angle e=6～8 °, f(is not shown for wafer length)=20～25mm.
Select the above-mentioned parameter combination for use, can make double crystal probe obtain optimum performance.
Table 1 has been listed the parameter value of two embodiment of the present utility model.The double crystal probe parameter value of embodiment 1 is: sound insulating layer thickness a=0.6mm, wafer width b=4.5mm, wafer is to sound insulating layer distance c=0.2mm, delay block thickness d=14mm, wafer length f=22mm, e=6.5 ° at ridge angle, its distance (steel plate thickness) width of cloth (wave height) curve is shown in Fig. 2 curve 1.
The double crystal probe parameter value of embodiment 2 is: sound insulating layer thickness a=0.6mm, and wafer width b=4.0mm, wafer is to sound insulating layer distance c=0.3mm, delay block thickness d=13.5mm, wafer length f=22mm, e=7 ° at ridge angle, its distance one width of cloth curve is shown in the curve among Fig. 22.
Claims (3)
1, a kind of steel-plate ultrasound wave inspection is with the moisture film double crystal probe that is coupled, it is characterized in that this each parameter value of popping one's head in is: sound insulating layer thickness a=0.5～1.2mm, the wafer width is b=4～6mm, wafer is to the distance c=0.2～0.3mm of sound insulating layer, delay block thickness d=12～15mm, ridge angle e=6～8 °, wafer length f=20～25mm.
2, according to the double crystal probe of claim 1, it is characterized in that said parameter value is: sound insulating layer thickness a=0.6mm, wafer width b=4.5mm, wafer is to sound insulating layer distance c=0.2mm, delay block thickness d=14mm, e=6.5 ° at ridge angle, wafer length f=22mm.
3, according to the double crystal probe of claim 1, it is characterized in that said parameter value is: sound insulating layer thickness a=0.6mm, wafer width b=4.0mm, wafer is to sound insulating layer distance c=0.3mm, delay block thickness d=13.5mm, e=7 ° at ridge angle, wafer length f=22mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93209067 CN2157518Y (en) | 1993-04-09 | 1993-04-09 | Water-film coupling double-crystal plate probe for supersonic flaw detecting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93209067 CN2157518Y (en) | 1993-04-09 | 1993-04-09 | Water-film coupling double-crystal plate probe for supersonic flaw detecting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2157518Y true CN2157518Y (en) | 1994-02-23 |
Family
ID=33791347
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93209067 Expired - Fee Related CN2157518Y (en) | 1993-04-09 | 1993-04-09 | Water-film coupling double-crystal plate probe for supersonic flaw detecting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2157518Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109254084A (en) * | 2018-11-07 | 2019-01-22 | 国网四川省电力公司成都供电公司 | A kind of implementation method based on GIS tank body ultrasonic test |
-
1993
- 1993-04-09 CN CN 93209067 patent/CN2157518Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109254084A (en) * | 2018-11-07 | 2019-01-22 | 国网四川省电力公司成都供电公司 | A kind of implementation method based on GIS tank body ultrasonic test |
| CN109254084B (en) * | 2018-11-07 | 2021-01-01 | 国网四川省电力公司成都供电公司 | GIS tank body ultrasonic testing-based implementation method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |