Title:
溶接状態監視装置及び溶接状態監視方法
Document Type and Number:
Japanese Patent JP6720507
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a technique which can correctly monitor an electro-resistance-welded state of a steel pipe by use of an imaging device having high durability.SOLUTION: A bore scope 10 is located at a position on an upstream side of a V-shaped convergence region 5 of a steel plate 1 curved into a cylindrical shape at which an abutting region 5a of the steel plate 1 can be photographed from an obliquely upper side. The bore scope 10 has an inner sheath 11 for accommodating a relay lens 12, a protective sheath 16 made of ceramic which covers an outside of the inner sheath. Nis made up between the inner sheath 11 and the protective sheath 16 and is discharged from a light entrance window 16a, whereby cooling for the sheathes 11, 16 and purging for prevention of sputtering can be simultaneously performed.SELECTED DRAWING: Figure 3
Inventors:
Noboru Hasegawa
High Shima Futoshi
High Shima Futoshi
Application Number:
JP2015224384A
Publication Date:
July 08, 2020
Filing Date:
November 17, 2015
Export Citation:
Assignee:
Nippon Steel Corporation
International Classes:
B23K13/08; B23K13/00
Domestic Patent References:
| JP2011642A | ||||
| JP62287214A |
Foreign References:
| WO2011132664A1 |
Attorney, Agent or Firm:
Patent Business Corporation Najima Patent Office