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 (JFE STEEL CORPORATION 2-3, Uchisaiwai-cho 2-chome, Chiyoda-k, Tokyo 11, 〒1000011, JP)
石神篤史 (〒11 東京都千代田区内幸町二丁目２番３号JFEスチール株式会社 知的財産部内 Tokyo, 〒1000011, JP)
OI, Kenji (JFE STEEL CORPORATION 2-3, Uchisaiwai-cho 2-chome, Chiyoda-k, Tokyo 11, 〒1000011, JP)
石神篤史 (〒11 東京都千代田区内幸町二丁目２番３号JFEスチール株式会社 知的財産部内 Tokyo, 〒1000011, JP)
OI, Kenji (JFE STEEL CORPORATION 2-3, Uchisaiwai-cho 2-chome, Chiyoda-k, Tokyo 11, 〒1000011, JP)
Application Number:
JP2009/065883
Publication Date:
December 02, 2010
Filing Date:
September 04, 2009
Export Citation:
Assignee:
JFE STEEL CORPORATION (2-3Uchisaiwai-cho 2-chome, Chiyoda-ku Tokyo, 11, 〒1000011, JP)
JFEスチール株式会社 (〒11 東京都千代田区内幸町二丁目２番３号 Tokyo, 〒1000011, JP)
ISHIGAMI, Atsushi (JFE STEEL CORPORATION 2-3, Uchisaiwai-cho 2-chome, Chiyoda-k, Tokyo 11, 〒1000011, JP)
石神篤史 (〒11 東京都千代田区内幸町二丁目２番３号JFEスチール株式会社 知的財産部内 Tokyo, 〒1000011, JP)
JFEスチール株式会社 (〒11 東京都千代田区内幸町二丁目２番３号 Tokyo, 〒1000011, JP)
ISHIGAMI, Atsushi (JFE STEEL CORPORATION 2-3, Uchisaiwai-cho 2-chome, Chiyoda-k, Tokyo 11, 〒1000011, JP)
石神篤史 (〒11 東京都千代田区内幸町二丁目２番３号JFEスチール株式会社 知的財産部内 Tokyo, 〒1000011, JP)
International Classes:
B23K9/18; B23K9/025; B23K101/06
Attorney, Agent or Firm:
OCHIAI, Kenichiro (JFE TECHNO-RESEARCH CORPORATION 7th floor, Yanagiya building, 1-10, Nihonbashi 2-chome, Chuo-k, Tokyo 27, 〒1030027, JP)
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