JPS57137083A - Cross-sectional shape detector for inside surface weld zone of welded pipe - Google Patents

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

Info

Publication number
JPS57137083A
JPS57137083A JP2289681A JP2289681A JPS57137083A JP S57137083 A JPS57137083 A JP S57137083A JP 2289681 A JP2289681 A JP 2289681A JP 2289681 A JP2289681 A JP 2289681A JP S57137083 A JPS57137083 A JP S57137083A
Authority
JP
Japan
Prior art keywords
weld zone
light
sectional shape
reflected light
profile
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
JP2289681A
Other languages
Japanese (ja)
Other versions
JPS6010835B2 (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 JP2289681A priority Critical patent/JPS6010835B2/en
Publication of JPS57137083A publication Critical patent/JPS57137083A/en
Publication of JPS6010835B2 publication Critical patent/JPS6010835B2/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
    • B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Length Measuring Devices By Optical Means (AREA)

Abstract

PURPOSE:To make sectional shape detection possible in real time by irradiating slit light to the inside surface weld zone of a welded pipe, receiving the reflected light thereof and detecting the sectional shape of the weld zone. CONSTITUTION:Laser light is passed through an optical fiber 11 and is projected as slit light from a cylindrical lens 6. This light is curved by mirrors 8, 9 and is irradiated along the circumference of a pipe to the parts A, B to be examined. The reflected light corresponding to the profile of the build-up part 1A of the beads passed by the movement of a pipe body 2 and the reflected light corresponding to the profile of the weld zone after cutting are obtained by the irradiated slit light, and the beams of the reflected light are curved by a mirror 10 and are made incident to an ITV camera 7. The shape detection signal obtained in the camera 7 is inputted to a CRT, where the accurate shape corresponding to the profile there is obtained. On the basis of the results thereof, the control of welding conditions is accomplished in real time, whereby the control of the cutting conditions with a cutter is accomplished.
JP2289681A 1981-02-20 1981-02-20 A device for detecting the cross-sectional shape of the inner weld of a welded pipe Expired JPS6010835B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2289681A JPS6010835B2 (en) 1981-02-20 1981-02-20 A device for detecting the cross-sectional shape of the inner weld of a welded pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2289681A JPS6010835B2 (en) 1981-02-20 1981-02-20 A device for detecting the cross-sectional shape of the inner weld of a welded pipe

Publications (2)

Publication Number Publication Date
JPS57137083A true JPS57137083A (en) 1982-08-24
JPS6010835B2 JPS6010835B2 (en) 1985-03-20

Family

ID=12095406

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2289681A Expired JPS6010835B2 (en) 1981-02-20 1981-02-20 A device for detecting the cross-sectional shape of the inner weld of a welded pipe

Country Status (1)

Country Link
JP (1) JPS6010835B2 (en)

Also Published As

Publication number Publication date
JPS6010835B2 (en) 1985-03-20

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