SUBMERGED ARC WELDING METHOD FOR STEEL PLATE

Title:

SUBMERGED ARC WELDING METHOD FOR STEEL PLATE

Document Type and Number:

WIPO Patent Application WO/2010/137186

Kind Code:

A1

Abstract:

Disclosed is a submerged arc welding method for a steel plate, which is suitably adopted in welding pipe making of a large diameter steel pipe such as a UOE steel pipe or a spiral steel pipe. Specifically disclosed is a method in which the welding conditions are set so that the cross-sectional area (S1) of an inner surface welding metal and the cross-sectional area (S2) of an outer surface welding metal satisfy the expressions (1): 0.40≤(S1+ S2)/t2≤0.80, (2): S1/t2≤0.35, and (3): S2/t2≤0.45 when submerged arc welding of a steel plate is carried out from the inner and outer surfaces, where t is the plate thickness of the steel plate (mm), S1 is the cross-sectional area of the inner surface welding metal excluding the part which overlaps the outer surface welding metal after the outer surface welding (mm2), and S2 is the cross-sectional area of the outer surface welding metal (mm2).

Inventors:

ISHIGAMI ATSUSHI (JP)
OI KENJI (JP)
HAYAKAWA NAOYA (JP)

Application Number:

PCT/JP2009/065883

Publication Date:

December 02, 2010

Filing Date:

September 04, 2009

Export Citation:

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Assignee:

JFE STEEL CORP (JP)
ISHIGAMI ATSUSHI (JP)
OI KENJI (JP)
HAYAKAWA NAOYA (JP)

International Classes:

B23K9/18; B23K9/025; B23K101/06

Foreign References:

JPS54122670A	1979-09-22
JPS5966978A	1984-04-16
JPH0775876A	1995-03-20
JPH11138266A	1999-05-25
JPH10109171A	1998-04-28
JP2006272377A	2006-10-12

Other References: