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AssigneeSumitomo Metal Industries, Lt.
InventorsShigeru Wakano, Akito Sakoda, Kunihiro Fukui, Minoru Nishihara
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A process for producing one-side electroplated steel sheet with the non-electroplating side having a high affinity for chemical conversion treatment is disclosed. The process comprises preparing a one-side electroplated steel sheet by applying a cathodic current thereto in an acidic plating bath simultaneously while slightly electroplating the non-electroplating surface thereof with a coating weight of 0.5 to 5 g/m.sup.2 by applying a cathodic current through said non-electroplating surface, and then applying electrolysis to said non-electroplating surface by passing an anodic current through said non-electroplating surface to thoroughly remove said electrodeposition on said non-electroplating surface.
A process for producing one-side electroplated steel sheet with the non-electroplating side having a high affinity for chemical conversion treatment, which comprises preparing a one-side electroplated steel sheet by applying a cathodic current to the electroplating side in an acidic plating bath, simultaneously slightly electroplating the non-electroplating surface thereof with a coating weight of 0.5 to 5 g/m.sup.2 by applying a cathodic current through said non-electroplating surface, and then applying electrolysis to said non-electroplating surface by passing an anodic current through said non-electroplating surface to thoroughly remove the electrodeposits on said non-electroplating surface.
A process for producing one-side electroplated steel sheet with the non-electroplating side having a high affinity for chemical conversion treatment, which comprises preparing a one-side electroplated steel sheet by applying a cathodic current to the electroplating side in an acidic plating bath, simultaneously slightly electroplating the non-electroplating surface thereof with a coating weight of 0.5 to 5 g/m.sup.2 by applying a cathodic current through said non-electroplating surface, then applying electrolysis to said non-electroplating surface by passing an anodic current through said non-electroplating surface to thoroughly remove the electrodeposits on said non-electroplating surface, and applying a cathodic current in an amount of 10 A/dm.sup.2 or less to said electroplating side during the application of said anodic current to the non-electroplating surface.
Dependencies are inferred from the claim text.