Title:
RESIN-COATED HIGH-STRENGTH HOT-DIP GALVANNEALED STEEL SHEET SUPERIOR IN PRESS FORMABILITY
Document Type and Number:
Japanese Patent JP2010196088
Kind Code:
A
Abstract:
To provide a resin-coated high-strength hot-dip galvannealed steel sheet superior in press formability, which does not cause die galling and can be press-formed stably for a long period of time.
In the resin-coated high-strength hot-dip galvannealed steel sheet superior in press formability, the ratio ζ/δ1 of peak intensities of the ζ phase to the δ1 phase in the hot-dip galvannealed layer by an X-ray diffraction analysis is 0.22-0.70, and PPI/25 μinch after having been coated with an organic resin film is 200 or less.
Inventors:
YOSHIDA TAKATOSHI
IRIE KOJI
IRIE KOJI
Application Number:
JP2009039788A
Publication Date:
September 09, 2010
Filing Date:
February 23, 2009
Export Citation:
Assignee:
KOBE STEEL LTD
International Classes:
C23C2/06; B32B15/08; B32B15/082; C23C2/28
Domestic Patent References:
| JPH03243755A | 1991-10-30 | |||
| JP2004190074A | 2004-07-08 | |||
| JP2004277876A | 2004-10-07 | |||
| JPH04235266A | 1992-08-24 | |||
| JPH09241815A | 1997-09-16 | |||
| JP2002004018A | 2002-01-09 |
Attorney, Agent or Firm:
Kyuichi Ueki
Tadashi Sugakawa
Osamu Futakuchi
Hiroaki Ito
Hisahiko Ueki
Yukari Shibata
Tadashi Sugakawa
Osamu Futakuchi
Hiroaki Ito
Hisahiko Ueki
Yukari Shibata