JPS5566754A - Automatic ultrasonic flaw detection for welded steel pipe - Google Patents
Automatic ultrasonic flaw detection for welded steel pipeInfo
- Publication number
- JPS5566754A JPS5566754A JP13978478A JP13978478A JPS5566754A JP S5566754 A JPS5566754 A JP S5566754A JP 13978478 A JP13978478 A JP 13978478A JP 13978478 A JP13978478 A JP 13978478A JP S5566754 A JPS5566754 A JP S5566754A
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- probe
- flaw
- point
- examination
- 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
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
PURPOSE: To improve the quality by reducing the length of unexamined end portion of welded pipes by employing a pipe-end examination step and suitably selecting the lap examination distance.
CONSTITUTION: A flaw detector truck 10 is adapted to run on a column 9, under the control of a controller 13. As the examined steel pipe 4 is transported into the flaw-detection bed 5, a probe 1 is attached to a point a on the pipe 4 and the flaw- detection is started after stabilization of the water film. After each probe 1 has passed thr pipe end 4a, the probe 1 is lifted by a manipulator 2 to complete the step A of examining the pipe end. Then, the probe 1 is placed at a point b which is spaced by a predetermined distance from the point a and the examination B of the central part of the pipe is effected after the stabilization of the water film. A lap flaw-detection region LR is preserved between the points a and b. The length of this region LR is selected to be longer than the distance corresponding to the water-film stabilization times in the steps A and B so that the unexamined portion is eliminated.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13978478A JPS5566754A (en) | 1978-11-15 | 1978-11-15 | Automatic ultrasonic flaw detection for welded steel pipe |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13978478A JPS5566754A (en) | 1978-11-15 | 1978-11-15 | Automatic ultrasonic flaw detection for welded steel pipe |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5566754A true JPS5566754A (en) | 1980-05-20 |
Family
ID=15253336
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13978478A Pending JPS5566754A (en) | 1978-11-15 | 1978-11-15 | Automatic ultrasonic flaw detection for welded steel pipe |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5566754A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100424507C (en) * | 2001-10-17 | 2008-10-08 | 中国石油天然气管道科学研究院 | Large-bore pipe ring welded seam phased-array ultrasonic automatic detection system |
JP2020091156A (en) * | 2018-12-04 | 2020-06-11 | 日本製鉄株式会社 | Ultrasonic flaw detection apparatus |
-
1978
- 1978-11-15 JP JP13978478A patent/JPS5566754A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100424507C (en) * | 2001-10-17 | 2008-10-08 | 中国石油天然气管道科学研究院 | Large-bore pipe ring welded seam phased-array ultrasonic automatic detection system |
JP2020091156A (en) * | 2018-12-04 | 2020-06-11 | 日本製鉄株式会社 | Ultrasonic flaw detection apparatus |
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