JPS5499488A - Ultrasonic flaw detection method of tube body inside - Google Patents

Ultrasonic flaw detection method of tube body inside

Info

Publication number
JPS5499488A
JPS5499488A JP555978A JP555978A JPS5499488A JP S5499488 A JPS5499488 A JP S5499488A JP 555978 A JP555978 A JP 555978A JP 555978 A JP555978 A JP 555978A JP S5499488 A JPS5499488 A JP S5499488A
Authority
JP
Japan
Prior art keywords
magnet
tube
flaw detection
disposing
close
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
JP555978A
Other languages
Japanese (ja)
Inventor
Kazuo Miyagawa
Yukito Sasaki
Koji Kawamura
Shuichi Sato
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 JP555978A priority Critical patent/JPS5499488A/en
Publication of JPS5499488A publication Critical patent/JPS5499488A/en
Pending legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To realize the method suited to flaw detection of the inside of tube body, by disposing transmission and reception coils opposedly to the magnet being close to the inside of the object being detected, and detecting the surface defect by moving the magnet and transmission and reception coils in harmony.
CONSTITUTION: A magnet 2 is disposed being close to the outer face of the object being detected 3, and has a contact roller 7 in the lower part thereof in a way that it can move parallel to weld part 3', and is suspended by a holding member 17 which is engaged with a screw shaft 16 rotated by a rotation driving device 12 and is designed to move in the direction of arrow L. In the inside of the object 3 provided opposedly to the magnet 2, a transmission/reception coil 1 is disposed being close to the inside of tube. The coil 1 is fitted to the end of a supporting bar 11, and is moved in synchronism with the magnet 2 by means of a rotation driving device 13 which rotates in harmony with the device 12 parallel to the weld part down to the extreme end of the object 3. By disposing the magnet large in dimensions and weight outside of the tube for the convenience of moving and maintenance, and disposing the coil 1 small in both dimensions and weight inside the tube, the flaw detection job may be facilirated.
COPYRIGHT: (C)1979,JPO&Japio
JP555978A 1978-01-20 1978-01-20 Ultrasonic flaw detection method of tube body inside Pending JPS5499488A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP555978A JPS5499488A (en) 1978-01-20 1978-01-20 Ultrasonic flaw detection method of tube body inside

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP555978A JPS5499488A (en) 1978-01-20 1978-01-20 Ultrasonic flaw detection method of tube body inside

Publications (1)

Publication Number Publication Date
JPS5499488A true JPS5499488A (en) 1979-08-06

Family

ID=11614547

Family Applications (1)

Application Number Title Priority Date Filing Date
JP555978A Pending JPS5499488A (en) 1978-01-20 1978-01-20 Ultrasonic flaw detection method of tube body inside

Country Status (1)

Country Link
JP (1) JPS5499488A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5286388A (en) * 1976-01-13 1977-07-18 Nippon Steel Corp Method of detecting flaw by supersonic waves

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5286388A (en) * 1976-01-13 1977-07-18 Nippon Steel Corp Method of detecting flaw by supersonic waves

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