Title:
METAL SHEET QUENCH-HARDENING APPARATUS AND QUENCH-HARDENING METHOD, AND STEEL SHEET PRODUCTION METHOD
Document Type and Number:
WIPO Patent Application WO/2022/163044
Kind Code:
A1
Abstract:
Provided are: a metal sheet quench-hardening apparatus and a metal sheet quench-hardening method, whereby it becomes possible to prevent the deterioration in shape of a metal sheet which may occur during quench-hardening; and a steel sheet production method. The metal sheet quench-hardening apparatus is provided with: a cooling fluid injector which is provided on the outlet port side of a soaking area in a continuous annealing furnace and has a plurality of injection nozzles through which mists are injected onto both surfaces of a metal sheet that is conveyed continuously; and at least a pair of restraining rolls for restraining the metal sheet on both surfaces thereof in a range laying between a start point of cooling with the cooling fluid injector and an end point of the cooling.
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Inventors:
YOSHIMOTO SOSHI (JP)
Application Number:
PCT/JP2021/039666
Publication Date:
August 04, 2022
Filing Date:
October 27, 2021
Export Citation:
Assignee:
JFE STEEL CORP (JP)
International Classes:
C21D9/52; C21D1/18; C21D1/26; C21D9/573; C22C38/00; C22C38/06; C22C38/60
Foreign References:
| JPS5695573U | 1981-07-29 | |||
| JP2008150685A | 2008-07-03 | |||
| JP2019090106A | 2019-06-13 | |||
| JPS62501300A | 1987-05-21 | |||
| US20160304984A1 | 2016-10-20 | |||
| JP2000178658A | 2000-06-27 | |||
| JP2009127060A | 2009-06-11 | |||
| JP6094722B2 | 2017-03-15 |
Other References:
See also references of EP 4257709A4
Attorney, Agent or Firm:
KUMASAKA Akira et al. (JP)
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