JPS5639460A - Supersonic flaw detection method for welded portion of pipe - Google Patents

Supersonic flaw detection method for welded portion of pipe

Info

Publication number
JPS5639460A
JPS5639460A JP11479679A JP11479679A JPS5639460A JP S5639460 A JPS5639460 A JP S5639460A JP 11479679 A JP11479679 A JP 11479679A JP 11479679 A JP11479679 A JP 11479679A JP S5639460 A JPS5639460 A JP S5639460A
Authority
JP
Japan
Prior art keywords
seam
flaw detection
detector
pipe
detection
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
Application number
JP11479679A
Other languages
Japanese (ja)
Inventor
Toshiyuki Matsumi
Hisashi Kikuchi
Manabu Matoba
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Steel Corp
Original Assignee
Nippon Steel Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nippon Steel Corp filed Critical Nippon Steel Corp
Priority to JP11479679A priority Critical patent/JPS5639460A/en
Publication of JPS5639460A publication Critical patent/JPS5639460A/en
Pending legal-status Critical Current

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  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)

Abstract

PURPOSE: To enable accurate supersonic flaw detection without the use of numerous probing units by controlling the lock position by means of supersonic flaw detection on the basis of seam position detection signals of the electrically seamed pipe through the seam detector which moves along the circumferential direction.
CONSTITUTION: Seam detector 5 makes reciprocal movement in the circumferentialdirection of electrically seamed pipe 3 through the motor 16, etc., starts up the counting at the expected seam section and detects the position error signal of the seam 4 through the counter, etc. which stops counting at the time of seam detection by means of the detector 5. When the revolution of the motor 11 is controlled on the basis of this signal, the position of the flaw detection block 2 is automatically adjusted and the probing unit is made to face the seam. Thus, it is possible to conduct accurate flaw detection by means of a set of probe unit without providing numerous probes by predicting displacement.
COPYRIGHT: (C)1981,JPO&Japio
JP11479679A 1979-09-07 1979-09-07 Supersonic flaw detection method for welded portion of pipe Pending JPS5639460A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11479679A JPS5639460A (en) 1979-09-07 1979-09-07 Supersonic flaw detection method for welded portion of pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11479679A JPS5639460A (en) 1979-09-07 1979-09-07 Supersonic flaw detection method for welded portion of pipe

Publications (1)

Publication Number Publication Date
JPS5639460A true JPS5639460A (en) 1981-04-15

Family

ID=14646895

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11479679A Pending JPS5639460A (en) 1979-09-07 1979-09-07 Supersonic flaw detection method for welded portion of pipe

Country Status (1)

Country Link
JP (1) JPS5639460A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6165157A (en) * 1984-09-07 1986-04-03 Furukawa Electric Co Ltd:The Detection of defect of metallic pipe
US5454267A (en) * 1990-12-21 1995-10-03 Framatome Multi-element ultrasonic probe for electronic scanning

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6165157A (en) * 1984-09-07 1986-04-03 Furukawa Electric Co Ltd:The Detection of defect of metallic pipe
US5454267A (en) * 1990-12-21 1995-10-03 Framatome Multi-element ultrasonic probe for electronic scanning

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