Title:
ALLOYED HOT-DIP GALVANIZED STEEL SHEET AND METHOD FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2010/053074
Kind Code:
A1
Abstract:
Disclosed is an alloyed hot-dip galvanized steel sheet having an excellent surface appearance, wherein plating failure and non-uniform alloying are suppressed. Also disclosed is a method for producing such an alloyed hot-dip galvanized steel sheet. The alloyed hot-dip galvanized steel sheet is obtained by hot-dip galvanizing a base steel, and then alloying the plating layer. The base steel is obtained by hot rolling a steel which contains 0.02-0.25 mass% of C, 0.5-3 mass% of Si, 1-4 mass% of Mn, 0.03-1 mass% of Cr, not more than 1.5 mass% of Al (excluding 0 mass%), not more than 0.03 mass% of P (excluding 0 mass%), not more than 0.03 mass% of S (excluding 0 mass%) and 0.003-1 mass% Ti, and additionally contains 0.25-5.0 mass% of Cu and 0.05-1.0 mass% of Ni, while satisfying formula (1), with the balance being made up of iron and unavoidable impurities.
[Cu]/[Ni] ≥ 5
In formula (1), [ ] represents the content (mass%) of each element.
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Inventors:
YUSE Fumio (())
湯瀬 文雄 (())
TAKEDA Mikako (())
武田 実佳子 (())
湯瀬 文雄 (())
TAKEDA Mikako (())
武田 実佳子 (())
Application Number:
JP2009/068780
Publication Date:
May 14, 2010
Filing Date:
November 02, 2009
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)
YUSE Fumio (())
湯瀬 文雄 (())
TAKEDA Mikako (())
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)
YUSE Fumio (())
湯瀬 文雄 (())
TAKEDA Mikako (())
International Classes:
C23C2/06; C21D9/46; C22C38/00; C22C38/58; C23C2/28
Attorney, Agent or Firm:
OGURI Shohei et al. (Eikoh Patent Firm, 7-13 Nishi-Shimbashi 1-chome, Minato-k, Tokyo 03, 〒1050003, JP)
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