DOUBLE ELECTROPLATING METHOD OF STRIP

摘要

PURPOSE: A double electroplating method of strip is provided which not only increases productivity of electroplating but also produces an electroplated steel sheet having fine surface appearance by plating the surface of the plating layer in a vertical or horizontal electroplating equipment after plating a steel sheet in a radial type electroplating equipment so that most of target plating amount is plated on a plating layer. CONSTITUTION: In a double electroplating method of strip in which a plating solution, the anode(4) and the cathode are constructed so as to continuously plate both surfaces of a strip(1), the double electroplating method comprises a preplating step of plating one surface of the strip to 60% or more of a target plating amount; and a finishing plating step of simultaneously plating both surfaces of the one surface plated strip, wherein a minimum plating amount which is plated on both surfaces of the strip in the finishing plating step is 2 g/m¬2 or more, wherein both surfaces of the strip are plated in such a manner that two single surfaces are sequentially plated in the preplating step, and wherein plating solutions of plating baths used in the preplating and finishing plating steps are identical.