Title:
CONTINUOUS MANGANESE ELECTROPLATING METHOD OF STEEL MATERIAL
Document Type and Number:
Japanese Patent JPS55141589
Kind Code:
A
Abstract:
PURPOSE:To conduct excellent manganese electroplating continuously while maintaining high productivity by restraining electrochemically noble cations contained in a plating bath to a prescribed range, and by introducing a procedure for removing various reaction products out of the bath system. CONSTITUTION:In conducting continuous, non-diaphragm type electroplating using insoluble anode, cations which are electrochemically nobler than manganese are restrained at low content by additon of sulfide such as H2S, or by addition of alkaline earth metal salt to the plating bath, or by controlling the plating bath at a pH 6-8, for example, Cr>300, Zn>300, Sn>100, Fe>100, Cd>100, Co>100, Ni> 100, Pb>100, As>50, Sb>50, Cu>50, Ag>50, all being expressed in ppm. The reaction products accumulated in the bath are removed by the adsorption with activated carbon, by cleaning with ion exchange membrane or with reverse osmotic membrane, or by heating the bath to boil etc.
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Inventors:
IKENO TERUO
KADO SATOSHI
AYUSAWA SABUROU
KAWASAKI HIRONOBU
WATANABE TAKASHI
KADO SATOSHI
AYUSAWA SABUROU
KAWASAKI HIRONOBU
WATANABE TAKASHI
Application Number:
JP4683979A
Publication Date:
November 05, 1980
Filing Date:
April 17, 1979
Export Citation:
Assignee:
NIPPON STEEL CORP
International Classes:
C25D5/26; C25D3/54; C25D21/16; C25D21/18; (IPC1-7): C25D3/54; C25D21/18