| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a method for producing an electrogalvanized steel sheet which can produce an electrogalvanized steel sheet having no deterioration in the properties of a plating layer, and having high whiteness without reducing current efficiency upon electrogalvanizing. <P>SOLUTION: A plating layer is formed on a steel sheet by an electrogalvanizing process, thereafter, it is contacted with an acidic aqueous solution with a pH of≤4,5 comprising at least one kind selected from nitrate ions, iodate ions, bromate ions and chlorite ions in the range of 0.002 to 0.05 mol/L in total for≥0.5 s, and, after the application of water washing and drying, a chemical film is formed on the surface of the plating film. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
