JPS57137084A - Cross-sectional shape detector for outside surface weld zone of welded pipe - Google Patents

Cross-sectional shape detector for outside surface weld zone of welded pipe

Info

Publication number
JPS57137084A
JPS57137084A JP2289781A JP2289781A JPS57137084A JP S57137084 A JPS57137084 A JP S57137084A JP 2289781 A JP2289781 A JP 2289781A JP 2289781 A JP2289781 A JP 2289781A JP S57137084 A JPS57137084 A JP S57137084A
Authority
JP
Japan
Prior art keywords
light
beads
refracted
sectional shape
weld zone
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.)
Granted
Application number
JP2289781A
Other languages
Japanese (ja)
Other versions
JPS606755B2 (en
Inventor
Kazuo Sano
Yutaka Mihara
Katsujiro Watanabe
Toshio Okawa
Koji Suzuki
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.)
JFE Engineering Corp
Original Assignee
NKK Corp
Nippon Kokan Ltd
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 NKK Corp, Nippon Kokan Ltd filed Critical NKK Corp
Priority to JP2289781A priority Critical patent/JPS606755B2/en
Publication of JPS57137084A publication Critical patent/JPS57137084A/en
Publication of JPS606755B2 publication Critical patent/JPS606755B2/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K11/00—Resistance welding; Severing by resistance heating
    • B23K11/24—Electric supply or control circuits therefor
    • B23K11/25—Monitoring devices

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Length Measuring Devices By Optical Means (AREA)

Abstract

PURPOSE:To adapt an optical cutting method in an extremely narrow place as well and to perform accurate welding cross-sectional shape detection by dispposing a curving means in such a way as to irradiate the slit light from a light projecting means to the optical axis position of a photodetecting means on a weld zone. CONSTITUTION:The laser light generated in a laser light generator 14 is passed through an optical fiber 15 and is projected as slit light 10' from a cylindrical lens 10. This light is refracted by a mirror 13 to refracted light 10'' which is irradiated along the circumference of a pipe to the optical axis position 6A of an ITV camera 8' on beads 6. The reflected light 10''' corresponding to the profile of the beads 6 passing here in accordance with the movement of a pipe body 2 is obtained by the refracted light 10'' irradiated to the position 6A, and is made incident to the camera 8'. In this way, the shape detection signal corresponding to the profile of the beads 6 is inputted to a cathode ray tube 17, by which the accurate shape is obtained. Further, it is inputted to an analytic device 18, by which welding conditions such as quantity of heat input, squeeze quantity and the like are controlled in accordance with the information.
JP2289781A 1981-02-20 1981-02-20 Device for detecting cross-sectional shape of external welded part of welded pipe Expired JPS606755B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2289781A JPS606755B2 (en) 1981-02-20 1981-02-20 Device for detecting cross-sectional shape of external welded part of welded pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2289781A JPS606755B2 (en) 1981-02-20 1981-02-20 Device for detecting cross-sectional shape of external welded part of welded pipe

Publications (2)

Publication Number Publication Date
JPS57137084A true JPS57137084A (en) 1982-08-24
JPS606755B2 JPS606755B2 (en) 1985-02-20

Family

ID=12095432

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2289781A Expired JPS606755B2 (en) 1981-02-20 1981-02-20 Device for detecting cross-sectional shape of external welded part of welded pipe

Country Status (1)

Country Link
JP (1) JPS606755B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6362288U (en) * 1986-09-05 1988-04-25
EP0727273A1 (en) * 1995-02-14 1996-08-21 Nkk Corporation Method of manufacturing optical fiber cable covered with metal pipe, and apparatus for manufacturing this optical fiber cable
JP2007187634A (en) * 2006-01-16 2007-07-26 Moritex Corp Three-dimensional shape measuring device
US7619750B2 (en) * 2002-04-30 2009-11-17 Jfe Steel Corporation Measurement method and device for bead cutting shape in electric resistance welded pipes

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62147660U (en) * 1986-03-12 1987-09-18

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6362288U (en) * 1986-09-05 1988-04-25
JPH0341908Y2 (en) * 1986-09-05 1991-09-03
EP0727273A1 (en) * 1995-02-14 1996-08-21 Nkk Corporation Method of manufacturing optical fiber cable covered with metal pipe, and apparatus for manufacturing this optical fiber cable
US5653898A (en) * 1995-02-14 1997-08-05 Nkk Corporation Method of manufacturing optical fiber cable covered with metal pipe, and apparatus for manufacturing this optical fiber cable
US7619750B2 (en) * 2002-04-30 2009-11-17 Jfe Steel Corporation Measurement method and device for bead cutting shape in electric resistance welded pipes
JP2007187634A (en) * 2006-01-16 2007-07-26 Moritex Corp Three-dimensional shape measuring device

Also Published As

Publication number Publication date
JPS606755B2 (en) 1985-02-20

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