Title:
HIGH STRENGTH WELDED METAL HAVING EXCELLENT CTOD CHARACTERISTICS
Document Type and Number:
WIPO Patent Application WO/2011/148859
Kind Code:
A1
Abstract:
Disclosed is a welded metal which is obtained by submerged arc welding and contains, in mass%, 0.02-0.12% of C, 0.1-0.70% of Si, 1.0-2.0% of Mn, 0.1-2.5% of Cu and/or 0.5-3.5% of Ni, 1.0% or less (excluding 0%) of Cr and/or 0.5-1.5% of Mo, 0.005% or less (including 0%) of Ca, 0.0050% or less (including 0%) of Ti, 0.005-0.050% of Al, and 0.010-0.050% of O. The welded metal satisfies formula (1) below, and has an area ratio of Al-containing oxides of 0.5-2.0% (inclusive). Consequently, the welded metal serves as a high strength welded metal that has excellent CTOD characteristics.
0.45% ≤ [C] + [Mn]/6 + ([Cu] + [Ni])/15 + ([Cr] + [Mo]/5) ≤ 0.75% (1)
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Inventors:
TAMURA Eiichi (())
田村 栄一 (())
KAN Hou (())
田村 栄一 (())
KAN Hou (())
Application Number:
JP2011/061574
Publication Date:
December 01, 2011
Filing Date:
May 19, 2011
Export Citation:
Assignee:
KABUSHIKI KAISHA KOBE SEIKO SHO (10-26, Wakinohama-cho 2-chome Chuo-ku, Kobe-sh, Hyogo 85, 〒6518585, JP)
株式会社神戸製鋼所 (〒85 兵庫県神戸市中央区脇浜町二丁目１０番２６号 Hyogo, 〒6518585, JP)
TAMURA Eiichi (())
田村 栄一 (())
株式会社神戸製鋼所 (〒85 兵庫県神戸市中央区脇浜町二丁目１０番２６号 Hyogo, 〒6518585, JP)
TAMURA Eiichi (())
田村 栄一 (())
International Classes:
B23K35/30; B23K35/362; C22C38/00; C22C38/54
Attorney, Agent or Firm:
OGURI Shohei et al. (Eikoh Patent Firm, Toranomon East Bldg. 10F 7-13, Nishi-Shimbashi 1-chome, Minato-k, Tokyo 03, 〒1050003, JP)
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Claims: