Title:
PRODUCTION OF ELECTROGALGANIZED STEEL SHEET HAVING EXCELLENT CORROSION RESISTANCE
Document Type and Number:
Japanese Patent JPS6089592
Kind Code:
A
Abstract:
PURPOSE:To obtain a galvanized steel sheet having excellent corrosion resistance as compared to the conventional galvanized steel sheet by performing electrolysis by using a galvanizing bath added with a prescribed ratio of Ti compd. to form a specified amt. or above of a galvanizing layer on the steel sheet. CONSTITUTION:A galvanizing bath added with 0.01-1.5g/l Ti compd. in terms of Ti metal in the conventional electrogalvanizing bath such as sulfuric acid (salt) bath, chloride bath or the like is prepd. The Ti compd. is preferably a bivalent or tervalent Ti compd. haing water solubility and reducing property for which chloride, sulfate, fluoride, etc. are used. Electrolysis is performed by using such galvanizing bath to form >=3g/m<2> galvanizing layer on the steel sheet. The electrogalvanized steel sheet obtd. by such galvanization exhibits better corrosion resistance without painting and after painting than the conventional electroplated steel sheet. The Ti compd. is exemplified by, for example, TiCl3.
Inventors:
HOSODA HIROSHI
KOBAYASHI SHIGERU
KIMURA HAJIME
IRIE TOSHIO
KOBAYASHI HIDEO
KOBAYASHI SHIGERU
KIMURA HAJIME
IRIE TOSHIO
KOBAYASHI HIDEO
Application Number:
JP19589983A
Publication Date:
May 20, 1985
Filing Date:
October 19, 1983
Export Citation:
Assignee:
KAWASAKI STEEL CO
International Classes:
C25D3/56; C25D3/22; (IPC1-7): C25D3/22
Attorney, Agent or Firm:
Watanabe Noboru Minoru
Previous Patent: The packaging medium which laminates the printer's ink for heat contraction films, and hot melt adhe...
Next Patent: JPS6089593
Next Patent: JPS6089593