Title:
METHOD FOR MANUFACTURING HOT-DIP GALVANIZED STEEL SHEET AND METHOD FOR MANUFACTURING ALLOYED HOT-DIP GALVANIZED STEEL SHEET
Document Type and Number:
WIPO Patent Application WO/2022/191008
Kind Code:
A1
Abstract:
According to the present invention, it is possible to provide a method for manufacturing a hot-dip galavanized steel sheet which has a high Si content and which has good plating adhesion. This method for manufacturing a hot-dip galavanized steel sheet includes: a step of hot rolling a steel raw material containing 1.0 mass% or more of Si and then winding the same at 500℃-700℃; a step of subjecting the surface of the steel sheet after the winding to an oxidation treatment at a heating temperature of no more than a steel plate temperature of 750℃ and then subjecting this surface to a reduction treatment; and a step of subjecting the steel sheet after the reduction treatment to a hot-dip galvanizing treatment to form a hot-dip galvanization layer on the surface of the steel sheet.
Inventors:
KAWAKAMI AKIRA
SHIGE HIROO
IRIE HIROSHI
MAEDA TAKAYUKI
YU HANG
SHIGE HIROO
IRIE HIROSHI
MAEDA TAKAYUKI
YU HANG
Application Number:
PCT/JP2022/008964
Publication Date:
September 15, 2022
Filing Date:
March 02, 2022
Export Citation:
Assignee:
KOBE STEEL LTD (JP)
International Classes:
C21D9/46; C21D9/52; C22C38/00; C22C38/02; C22C38/60; C23C2/02; C23C2/06; C23C2/40
Domestic Patent References:
| WO2012165661A1 | 2012-12-06 | |||
| WO2017057570A1 | 2017-04-06 | |||
| WO2015005191A1 | 2015-01-15 | |||
| WO2016038801A1 | 2016-03-17 |
Foreign References:
| JP2010116590A | 2010-05-27 | |||
| JP2016504490A | 2016-02-12 | |||
| JP2010132975A | 2010-06-17 | |||
| JP2007239012A | 2007-09-20 | |||
| JPH06136500A | 1994-05-17 | |||
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| JP2006233333A | 2006-09-07 | |||
| JP2000309824A | 2000-11-07 | |||
| JP2021036226A | 2021-03-04 | |||
| JP2022014412A | 2022-01-19 |
Attorney, Agent or Firm:
KOTANI, Masataka et al. (JP)
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