Title:
PRE-PHOSPHATED STEEL SHEET AND MANUFACTURING METHOD THEREFOR
Document Type and Number:
Japanese Patent JP2005248242
Kind Code:
A
Abstract:
To provide a pre-phosphated steel sheet which has improved sliding properties and balances the adequate sliding properties with weldability and chemical conversion coating properties, and to provide a manufacturing method therefor.
The phosphate-coated galvanized steel sheet is a galvanized steel sheet having the pre-phosphated film on at least one plated surface, wherein the pre-phosphated film has a coating weight of 1 mmol/m2 to 5 mmol/m2 in P terms, has a mole ratio Zn/P of Zn to P contained therein in an amount of 1.0 to 2.0, and a mole ratio Zn(II)/P of Zn(II) to P on the surface of the pre-phosphated film in an amount of less than 1.0.
Inventors:
TOMIYASU TAKESHI
MORIKAWA MASAHIRO
KASHIWAGI HIROYUKI
IWASE JIRO
MORIKAWA MASAHIRO
KASHIWAGI HIROYUKI
IWASE JIRO
Application Number:
JP2004059410A
Publication Date:
September 15, 2005
Filing Date:
March 03, 2004
Export Citation:
Assignee:
SUMITOMO METAL IND
International Classes:
C23C22/12; C23C28/00; (IPC1-7): C23C22/12; C23C28/00
Attorney, Agent or Firm:
Tetsuro Hoshino
Akihiko Yamashita
Kishimoto Tatsuto
Akihiko Yamashita
Kishimoto Tatsuto
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