Title:
COMPLEX METHOD OF WELDING INCOMBINATION OF GAS-SHIELD ARK WELDING WITH SUBMERGED ARK WELDING
Document Type and Number:
WIPO Patent Application WO/2010/098499
Kind Code:
A1
Abstract:
In a gas-shield ark welding using multiple electrodes combined with a submerged ark welding, electric current density is maintained in a proper range both for the gas-shield ark welding and the submerged ark welding thereby providing a method of gas-shield ark welding combined with a submerged ark welding having a high productivity while preventing deterioration of toughness of HAZ. In an embodiment, a butt welding of steel plates is carried out using the gas-shield ark welding device combined with the submerged ark welding device at the rear thereof. The gas-shield ark welding is carried out using more than two electrodes, the preceding electrode in the gas-shield ark welding being a welding wire having the diameter of 1.4mm or more while maintaining the electric current density of the first electrode at 320A/mm2 or more.
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Inventors:
HAYAKAWA, Naoya (JFE STEEL CORPORATION 2-3, Uchisaiwai-cho 2-chome, Chiyoda-k, Tokyo 11, 〒1000011, JP)
早川直哉 (〒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)
大井健次 (〒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)
ISHIGAMI, Atsushi (JFE STEEL CORPORATION 2-3, Uchisaiwai-cho 2-chome, Chiyoda-k, Tokyo 11, 〒1000011, JP)
早川直哉 (〒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)
大井健次 (〒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)
ISHIGAMI, Atsushi (JFE STEEL CORPORATION 2-3, Uchisaiwai-cho 2-chome, Chiyoda-k, Tokyo 11, 〒1000011, JP)
Application Number:
JP2010/053479
Publication Date:
September 02, 2010
Filing Date:
February 25, 2010
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)
HAYAKAWA, Naoya (JFE STEEL CORPORATION 2-3, Uchisaiwai-cho 2-chome, Chiyoda-k, Tokyo 11, 〒1000011, JP)
早川直哉 (〒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)
大井健次 (〒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)
HAYAKAWA, Naoya (JFE STEEL CORPORATION 2-3, Uchisaiwai-cho 2-chome, Chiyoda-k, Tokyo 11, 〒1000011, JP)
早川直哉 (〒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)
大井健次 (〒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:
B23K9/16; B23K9/09; B23K9/173; B23K9/18; B23K103/04
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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