Title:
METHOD FOR MANUFACTURING HOT-DIP ZINC-PLATED STEEL SHEET, AND METHOD FOR OPERATING MOLTEN ZINC PLATING BATH
Document Type and Number:
WIPO Patent Application WO/2020/213671
Kind Code:
A1
Abstract:
A method for manufacturing a hot-dip zinc-plated steel sheet is a method for manufacturing a hot-dip zinc-plated steel sheet by dipping a steel sheet in a molten zinc plating bath continuously to form a hot-dip zinc plating layer. In the method for manufacturing a hot-dip zinc-plated steel sheet, the bath temperature T and the free Al concentration CAl of the molten zinc plating bath are adjusted so that top dross can be generated and the top dross in the molten zinc plating bath is removed when the hot-dip zinc plating facility is halted, and the bath temperature T and the free Al concentration CAl of the molten zinc plating bath are adjusted so that a δ1 phase can cause the generation of nuclei when the hot-dip zinc plating facility is operated.
Inventors:
FURUKAWA NAOTO (JP)
KONISHI TAKESHI (JP)
KONISHI TAKESHI (JP)
Application Number:
PCT/JP2020/016686
Publication Date:
October 22, 2020
Filing Date:
April 16, 2020
Export Citation:
Assignee:
NIPPON STEEL CORP (JP)
International Classes:
C23C2/06; C23C2/28; C23C2/40
Foreign References:
| JPH0499258A | 1992-03-31 | |||
| JPH04362167A | 1992-12-15 | |||
| CN110592514A | 2019-12-20 |
Attorney, Agent or Firm:
TANAI Sumio et al. (JP)
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