MONITORING DEVICE, METHOD, AND PROGRAM FOR SEAM WELDING, AND STORAGE MEDIUM

Title:

MONITORING DEVICE, METHOD, AND PROGRAM FOR SEAM WELDING, AND STORAGE MEDIUM

Document Type and Number:

WIPO Patent Application WO/2013/069748

Kind Code:

A1

Abstract:

A monitoring device for seam welding, in which a band-shaped steel plate is formed into a continuous cylindrical shape by means of a roll group while the plate is transported and the two ends are hot welded together in the circumferential direction of the plate that converges to a V shape, is provided with: an image acquisition unit for capturing an image of the region including the V convergence location where both ends in the circumferential direction converge in the V shape; either a butt point detection unit for detecting the butt point or a V convergence point detection unit for detecting the V convergence point; a temperature measurement region setting unit for setting the temperature measurement region including the welded part where the welded part in the thickness of the plate starts to discharge at the surface; a brightness level calculation unit for calculating the brightness level; a temperature converter for converting to temperature; and a decision unit for determining whether the temperature of said temperature measurement region is greater than the specified minimum value.

Inventors:

HASEGAWA NOBORU (JP)
NAKAJI TOMOHIRO (JP)
KARUBE YOSHIFUMI (JP)
YAMAMOTO KAZUTO (JP)

Application Number:

PCT/JP2012/079036

Publication Date:

May 16, 2013

Filing Date:

November 08, 2012

Export Citation:

Click for automatic bibliography generation Help

Assignee:

NIPPON STEEL & SUMITOMO METAL CORP (JP)

International Classes:

B23K13/08; B21C37/08; B23K13/00

Domestic Patent References:

WO2011118560A1

2011-09-29

Foreign References:

JP2011000642A	2011-01-06
JPH1133621A	1999-02-09
JP2009113070A	2009-05-28
JP2011036892A	2011-02-24

Other References: