PURPOSE: To facilitate and speed up switching of production of a plated steel sheet and a cold rolled steel sheet and switching of plating kinds by providing a flow rate controller in plating baths and regulating the flow rate of the plating metal which flows down from slits and is splashed by brush rolls.
CONSTITUTION: The plating device is disposed on both sides of the transporting path for the steel sheet 1. The flow rate controllers 15 are provided in the plating liquid 13 to regulate the down flow rate of the plating metal flowing in the lower slits 14. The plating metal flowing down from bath cells 11 is splashed toward the surface of the steel sheet 1 by the brush rolls 16 provided below the bath cells 11 and is stuck to both the surfaces of the steel sheet 1. Only the one plating device is used in case of plating on one side. The kinds of the plating metals to be poured into the respective bath cells 11 are changed in case of applying different platings on the front and rear of the steel sheet 1. The steel sheet is passed through both the plating devices without using said devices in case of producing the cold rolled steel sheet.
UEMATSU NOBUO
MIKI TOSHIHIKO
FURUYAMA TERUO
