Title:
WELDING METHOD AND ITS WELDING DEVICE
Document Type and Number:
Japanese Patent JP2000141044
Kind Code:
A
Abstract:
To provide a welding method which can be suitably applied to a long pipe joint which connects e.g. tubular pipes each other, and a welding device used in the welding method.
In a welding method with which tubular pipe stocks 11 are butt welded each other using a torch 14, the tubular pipe stocks 11 are rotated with rotational steps divided into at least five, initial TIG welding is executed without using an adding wire, next finish welding is executed using the adding wire, and welding whose welded layer is composed of an initial layer and a finish welded layer is applied.
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Inventors:
INOUE KOBO
KOBAYASHI HIDEHARU
KAMITO YOSHIMI
MIYAKUBI AKIHIKO
ITO NAOYUKI
KOBAYASHI HIDEHARU
KAMITO YOSHIMI
MIYAKUBI AKIHIKO
ITO NAOYUKI
Application Number:
JP32337998A
Publication Date:
May 23, 2000
Filing Date:
November 13, 1998
Export Citation:
Assignee:
MITSUBISHI HEAVY IND LTD
International Classes:
B23K9/167; B23K9/028; B23K9/12; (IPC1-7): B23K9/167; B23K9/028; B23K9/12
Attorney, Agent or Firm:
Toshiro Mitsuishi (2 outside)