BUTT WELDED JOINT OF WELDED STRUCTURE, AND METHOD FOR MANUFACTURING SAME

Title:

BUTT WELDED JOINT OF WELDED STRUCTURE, AND METHOD FOR MANUFACTURING SAME

Document Type and Number:

WIPO Patent Application WO/2011/068155

Kind Code:

A1

Abstract:

Disclosed is a butt welded joint (1A) of a welded structure provided with: a pair of metallic materials to be welded (11A), a weld bead (12A), and a pair of alteration zones (13A). The weld bead (12A) is formed by irradiating the butted part between the metallic materials to be welded (11A) with the first high-energy density beam and has a width W on the irradiated-side surface. The alteration zones (13A), which each consist of only a heat affected section and a melted and solidified metal, are formed on the first high-energy density beam irradiated-side of the butt welded joint (1A) by irradiating the surface with a second high-energy density beam, respectively have a shape of a belt parallel to the weld bead, and are respectively positioned on the right and left of the center in the width direction of the weld bead.

Inventors:

ISHIKAWA TADASHI (JP)
HONMA RYUICHI (JP)
ICHIKAWA KAZUTOSHI (JP)

Application Number:

PCT/JP2010/071564

Publication Date:

June 09, 2011

Filing Date:

December 02, 2010

Export Citation:

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Assignee:

NIPPON STEEL CORP (JP)
ISHIKAWA TADASHI (JP)
HONMA RYUICHI (JP)
ICHIKAWA KAZUTOSHI (JP)

International Classes:

B23K31/00; B23K15/00; B23K15/06; F03D11/04

Foreign References:

JPS53141140A	1978-12-08
JPH01205892A	1989-08-18
JP2005046858A	2005-02-24
JPH11350042A	1999-12-21
JPS5492541A	1979-07-21

Other References: