Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
PLATED STEEL SHEET TO BE HOT-PRESS-FORMED, AND METHOD FOR MANUFACTURING THE SAME
Document Type and Number:
Japanese Patent JP2010090463
Kind Code:
A
Abstract:

To provide a plated steel sheet to be hot-press-formed which has superior oxidation resistance.

This manufacturing method includes: bringing the plated steel sheet into contact with an acidic solution containing Zr ions; holding the plated steel sheet for 1-90 seconds after the contact treatment; and then washing the plated steel sheet with water and drying the plated steel sheet to form an oxide layer having an average thickness of 10 nm or more on the surface of the plated steel sheet. When containing the Zr ions, the acidic solution preferably contains at least one or more compounds among sulfate, nitrate, chloride and phosphate of Zr, in a range of 0.1-100 g/l by Zr ion concentration.


Inventors:
MASUOKA HIROYUKI
NAKAMARU HIROKI
OI TOSHIHIKO
OTSUKA SHINJI
Application Number:
JP2008263888A
Publication Date:
April 22, 2010
Filing Date:
October 10, 2008
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
JFE STEEL CORP
International Classes:
C23C22/06; B21D22/20; C23C2/26; C23C28/00; C25D5/48
Domestic Patent References:
JP2003129209A2003-05-08
JP2007138231A2007-06-07
Attorney, Agent or Firm:
Kenichiro Ochiai
Kazuhiro Mori