Title:
PHOSPHATE CHEMICAL TREATMENT CNTROLLER
Document Type and Number:
Japanese Patent JPS544252
Kind Code:
A
Abstract:
PURPOSE: To maintain the concn. of nitrite ions, at a predetermined value, contained in an acidic phosphate film forming liquid as a film forming reaction accelerator in a metal treating apparatus using the liquid by measuring the concn. as oxidation-reduction potential.
Inventors:
FUJITA KOUICHI
MURAKAMI RIYOUICHI
SUEYOSHI AKIKO
MURAKAMI RIYOUICHI
SUEYOSHI AKIKO
Application Number:
JP7016177A
Publication Date:
January 12, 1979
Filing Date:
June 13, 1977
Export Citation:
Assignee:
NIPPON PAINT CO LTD
International Classes:
C23C22/77; G05D21/00; (IPC1-7): C23F7/08