Title:
SUPPLY METHOD TO CHEMICAL CONVERSION TREATMENT BATH
Document Type and Number:
Japanese Patent JP2017141495
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a supply method to a chemical conversion treatment bath, which can keep a corrosion resistance and a film adhesion of a chemical film to be formed, even if an aluminum metal chemical conversion treatment bath is continuously used.SOLUTION: In a supply method of supplying a supplement to an aluminum metal chemical conversion treatment bath, a supplement contains at least one of a zirconium salt and a titanium salt, and an effective fluoride. The supplement is supplied so that the ratio F/A of a fluoride ion concentration (mg/L) to the aluminum ion concentration (mg/L) in an aluminum system treatment bath may be 1.8 to 4.5.SELECTED DRAWING: None
Inventors:
KAMIMURA MASAYUKI
MATSUKAWA MASAHIKO
MATSUKAWA MASAHIKO
Application Number:
JP2016023854A
Publication Date:
August 17, 2017
Filing Date:
February 10, 2016
Export Citation:
Assignee:
NIPPON PAINT SURF CHEMICALS CO LTD
International Classes:
C23C22/86; C23C22/34
Attorney, Agent or Firm:
Masayuki Masabayashi
Hayashi Ichiyoshi
Hayashi Ichiyoshi
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