JPS5550998A - Weld zone inspection apparatus of spiral pipe - Google Patents
Weld zone inspection apparatus of spiral pipeInfo
- Publication number
- JPS5550998A JPS5550998A JP12342878A JP12342878A JPS5550998A JP S5550998 A JPS5550998 A JP S5550998A JP 12342878 A JP12342878 A JP 12342878A JP 12342878 A JP12342878 A JP 12342878A JP S5550998 A JPS5550998 A JP S5550998A
- Authority
- JP
- Japan
- Prior art keywords
- weld zone
- pipe
- boom
- generator
- defect
- Prior art date
- 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
Links
Landscapes
- Analysing Materials By The Use Of Radiation (AREA)
Abstract
PURPOSE: To inspect the weld zone for defect on the spot in the course of pipe fabrication and enable to set the radiation generator and other devices in the specified positions, by providing the radiation generator at the boom end positioned at the side of pipe conveying direction, and providing a fluoroscopic unit to obtain videosignal opposedly thereto.
CONSTITUTION: A pipe prototype is formed while letting off a strip plate 21 spirally, and the plate butt part is welded by weldig machines 22, 23 from inside and outside. A boom 27 is extended in the pipe growth direction from a boom supporting device 26, and an X-ray generator 28 provided at the end thereof is set in the position of weld line 25, and radiates X-rays. Transforming into video signal by a fluoroscopic unit 28 opposedly provided thereto, defect of weld zone 25 is inspected for. At this time, if there is positional deviation between the generator 28 and weld zone 25, a video signal a is fed in the setting circuit of slice level b, and a weld zone position signal c is obtained. By feeding horizontal synchronising signals d1, d2 to the both sides thereof at equal distance, the deviation direction is discriminated, which is processed in an electric circuit, and supplied to motors 29, 32, so that the positional deviation may be corrected.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12342878A JPS5550998A (en) | 1978-10-06 | 1978-10-06 | Weld zone inspection apparatus of spiral pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12342878A JPS5550998A (en) | 1978-10-06 | 1978-10-06 | Weld zone inspection apparatus of spiral pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5550998A true JPS5550998A (en) | 1980-04-14 |
Family
ID=14860313
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12342878A Pending JPS5550998A (en) | 1978-10-06 | 1978-10-06 | Weld zone inspection apparatus of spiral pipe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5550998A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4640453A (en) * | 1984-10-13 | 1987-02-03 | Mitsubishi Jukogyo Kabushiki Kaisha | Apparatus for fabricating multi-layer spiral tubes |
| WO1995001273A1 (en) * | 1993-06-29 | 1995-01-12 | Hitachi, Ltd. | Method for manufacturing vehicle structural bodies |
| US5388129A (en) * | 1993-09-01 | 1995-02-07 | Westinghouse Electric Corporation | Apparatus and method for radiographic inspection of welds |
-
1978
- 1978-10-06 JP JP12342878A patent/JPS5550998A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4640453A (en) * | 1984-10-13 | 1987-02-03 | Mitsubishi Jukogyo Kabushiki Kaisha | Apparatus for fabricating multi-layer spiral tubes |
| WO1995001273A1 (en) * | 1993-06-29 | 1995-01-12 | Hitachi, Ltd. | Method for manufacturing vehicle structural bodies |
| US5388129A (en) * | 1993-09-01 | 1995-02-07 | Westinghouse Electric Corporation | Apparatus and method for radiographic inspection of welds |
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