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Title:
STEEL T-BAR
Document Type and Number:
WIPO Patent Application WO/2009/154299
Kind Code:
A1
Abstract:
Provided is a steel T-bar having a web height of at least 150 mm and having no welds. The cross-sectional shape, in the bar width direction, of a fillet section formed at the joint between the web and the flange is an arc that contacts the web and the flange. The radius of the arc is between 2 and 10 mm, and the shape and size of the fillet section are optimized. This configuration allows substantial improvement in work efficiency when welding ends together, when the T-bars are used as T-longitudinals in shipbuilding.

Inventors:
TAKEMASA, Mineyasu (JFE STEEL CORPORATION 2-3, Uchisaiwai-cho 2-chome, Chiyoda-k, Tokyo 11, 〒1000011, JP)
竹正峰康 (〒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)
HORITA, Tomoo (JFE STEEL CORPORATION 2-3, Uchisaiwai-cho 2-chome, Chiyoda-k, Tokyo 11, 〒1000011, JP)
堀田知夫 (〒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)
TAKASHIMA, Yukio (JFE STEEL CORPORATION 2-3, Uchisaiwai-cho 2-chome, Chiyoda-k, Tokyo 11, 〒1000011, JP)
Application Number:
JP2009/061437
Publication Date:
December 23, 2009
Filing Date:
June 17, 2009
Export Citation:
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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)
TAKEMASA, Mineyasu (JFE STEEL CORPORATION 2-3, Uchisaiwai-cho 2-chome, Chiyoda-k, Tokyo 11, 〒1000011, JP)
竹正峰康 (〒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)
HORITA, Tomoo (JFE STEEL CORPORATION 2-3, Uchisaiwai-cho 2-chome, Chiyoda-k, Tokyo 11, 〒1000011, JP)
堀田知夫 (〒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:
B21B1/092; B21B27/10; B21B1/08; B21B27/06
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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