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Title:
PRODUCTION METHOD OF ELECTROGALVANIZED STEEL SHEET HAVING EXCELLENT PLATING APPEARANCE
Document Type and Number:
Japanese Patent JP2006206928
Kind Code:
A
Abstract:

To provide a method for manufacturing electrogalvanized steel sheet capable of enhancing lightness without addition of fresh components into a plating bath.

In the stage of manufacturing the electrogalvanized steel sheet having a galvanizing coating weight of 10 to 40 g/m2 by subjecting a steel sheet to electrogalvanizing a plurality of times in a plurality of plating baths, the method has a preceding stage plating process of applying electrogalvanizing to the steel sheet in at least one or more plating baths, and a post stage plating process of applying electrogalvanizing to the steel sheet in the at least one or more plating baths, and further has a dipping process of dipping and passing the steel sheet without energizing through a zinc plating solution in the at least one or more plating baths, between the preceding stage plating process and the post stage plating process.


Inventors:
KAWADA AKIRA
WATANABE YUKIO
OTSUKA SHINJI
OGAWA TAKASHI
BABA NOBUTAKE
Application Number:
JP2005016592A
Publication Date:
August 10, 2006
Filing Date:
January 25, 2005
Export Citation:
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Assignee:
JFE STEEL KK
International Classes:
C25D5/26; C25D21/12; C25D21/18
Domestic Patent References:
JPS62294198A1987-12-21
JPH0941187A1997-02-10
JPH08277488A1996-10-22
JPH08120485A1996-05-14
JPS6314891A1988-01-22
Attorney, Agent or Firm:
Yasumitsu Nakahama