Title:
BUTT WELDING METHOD FOR THIN WALL TUBE AND THE LIKE
Document Type and Number:
Japanese Patent JP2928737
Kind Code:
B2
Abstract:
PURPOSE: To enable stable butt welding by maintaining at high precision the out-of-roundness, flatness, etc., of the butt end face in each opening in a thin wall tube and the like.
CONSTITUTION: Flaring working is performed on the end part of the butt welding side of a tube 1; then, the end face of the flaring part 1A is trued up vertically to the center line of the tube with the out-of-roundness held and with the end faces of the flaring part 1A facing each other; the flaring parts 1A are held by each taper chuck 8 and abutted on each other; and the abutted part is welded from outside while the end faces are held in contact with each other.
Inventors:
UNNO HISASHI
Application Number:
JP33447694A
Publication Date:
August 03, 1999
Filing Date:
December 19, 1994
Export Citation:
Assignee:
SANKEI GIKEN KOGYO KK
International Classes:
B23D21/00; B21D19/04; B21D41/02; B23K9/028; B23K33/00; B23K37/053; (IPC1-7): B23K9/028; B21D41/02; B23D21/00; B23K33/00; B23K37/053
Domestic Patent References:
| JP4123871A | ||||
| JP61186135A | ||||
| JP419008A | ||||
| JP5930486A |
Attorney, Agent or Firm:
Naoto Kan (1 person outside)
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