Method and apparatus for manufacturing electroplated steel sheet
AssigneeJfe Steel Corporation
InventorsGentaro Takeda, Yoshimichi Hino, Soshi Yoshimoto, Hideyuki Takahashi
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Abstract
A method for manufacturing an electroplated steel sheet by continuously performing electroplating on a steel sheet, the method including disposing a slit gas nozzle having an ejection port having a width wider than a width of the steel sheet in a width direction of the steel sheet on a side of an exit of an electroplating cell for the steel sheet to pass through, and ejecting a gas through the slit gas nozzle toward the steel sheet.
Claims14
A method for manufacturing an electroplated steel sheet, the method comprising:
- continuously performing electroplating on a steel sheet;
- and, during the performing,
- disposing slit gas nozzles having an ejection port having a width wider than a width of the steel sheet in a width direction of the steel sheet on a side of an exit of an electroplating cell for the steel sheet to pass through, and ejecting a gas through the slit gas nozzles toward the steel sheet,
- wherein the slit gas nozzles are disposed on sides of front and back surfaces of the steel sheet, and there is a first offset of 100 mm or more in a longitudinal direction of the steel sheet between a first slit gas nozzle and a second slit gas nozzle, the first slit gas nozzle being one of the slit gas nozzles disposed on the side of the front surface of the steel sheet and the second slit gas nozzle being one of the slit gas nozzles disposed on the side of the back surface of the steel sheet.
A method for manufacturing an electroplated steel sheet by continuously performing electroplating on a steel sheet, the method comprising:
- continuously performing electroplating on a steel sheet in an electroplating cell;
- and
- disposing a spray nozzle in a width direction of the steel sheet on a side of an exit of an electroplating cell for the steel sheet to pass through, ejecting a solution having a pH of 4 to 7 through the spray nozzle toward the steel sheet, further disposing slit gas nozzles having an ejection port having a width wider than a width of the steel sheet in the width direction of the steel sheet downstream of the spray nozzle, and ejecting a gas through the slit gas nozzles toward the steel sheet,
- wherein the slit gas nozzles are disposed on sides of front and back surfaces of the steel sheet, and there is a first offset of 100 mm or more in a longitudinal direction of the steel sheet between a first slit gas nozzle and a second slit gas nozzle, the first slit gas nozzle being one of the slit gas nozzles disposed on the side of the front surface of the steel sheet and the second slit gas nozzle being one of the slit gas nozzles disposed on the side of the back surface of the steel sheet.
Dependencies are inferred from the claim text.