Title:
冷延鋼板の製造方法
Document Type and Number:
Japanese Patent JP6720943
Kind Code:
B2
Abstract:
To provide a production method of cold rolled steel sheet that can perform uniform and very thin zinc plating with high efficiency and good anticorrosion up to press molding.SOLUTION: A production method of cold rolled steel sheet comprises: sequentially performing in a same line, a continuous annealing step; a steel sheet shape correction step; and an optional surface activation step; and an electric zinc plating treatment step using a horizontal-cell-system electric plating cell with the length of an anode electrode of 500 mm or shorter in a longitudinal direction thereof. The zinc plating is performed with the coating weight of zinc per one-sided surface of the cold rolled steel sheet is 300-3000 mg/m. In the electric zinc plating treatment step, plating solution is provided at the jet speed of 1.5×V or more where, V is a steel sheet passing speed (m/s).SELECTED DRAWING: None
Inventors:
Gentaro Takeda
▲高▼橋 秀行
Hino Zendo
Kazuaki Tsuchimoto
Akira Matsuzaki
▲高▼橋 秀行
Hino Zendo
Kazuaki Tsuchimoto
Akira Matsuzaki
Application Number:
JP2017165406A
Publication Date:
July 08, 2020
Filing Date:
August 30, 2017
Export Citation:
Assignee:
jfe Steel Corporation
International Classes:
C25D21/00; C25D5/08; C25D7/06; C25D17/12; C25D21/10
Domestic Patent References:
| JP2000087257A | ||||
| JP48070632A | ||||
| JP63293200A | ||||
| JP58161792A | ||||
| JP2228494A |
Attorney, Agent or Firm:
Isomura Tetsuro
Akira Kumasaka
Tetsuya Sakai
Kazuhiro Mori
Akira Kumasaka
Tetsuya Sakai
Kazuhiro Mori