Title:
QUENCHING DEVICE, QUENCHING METHOD, AND METAL PLATE PRODUCTION METHOD
Document Type and Number:
WIPO Patent Application WO/2020/085352
Kind Code:
A1
Abstract:
Provided are a quenching device, a rapid-cooling quenching method, and metal plate production method, whereby shape defects in metal plates during quenching can be suppressed, reduction in metal plate cooling speed can be suppressed, and lack of cooling speed uniformity in the plate width direction of the metal plates can be prevented. This quenching device immerses and cools a high-temperature metal plate in liquid and comprises: a tank housing the liquid in which the metal plate is immersed; a jetting device having at least part thereof provided inside the liquid in the tank and comprising a plurality of nozzles that jet the liquid on to both surfaces of the metal plate; and a restraining roll provided between an entry side end section and an exit side end section of the jetting device and pinching the metal plate from both sides. The jetting device is characterized by: at least a nozzle adjacent to the restraining roll being inclined from the vertical direction relative to the metal plate, towards the restraining roll; and the restraining roll having a groove that causes the liquid jetted from the adjacent nozzle to escape in the longitudinal direction of the metal plate.
Inventors:
YOSHIMOTO SOSHI (JP)
HASHIMUKAI TOMOHIRO (JP)
SUZUKI MUNESUKE (JP)
HASHIMUKAI TOMOHIRO (JP)
SUZUKI MUNESUKE (JP)
Application Number:
PCT/JP2019/041433
Publication Date:
April 30, 2020
Filing Date:
October 23, 2019
Export Citation:
Assignee:
JFE STEEL CORP (JP)
International Classes:
C21D9/573; C21D1/63; C22C38/00; C22C38/06; C22C38/60
Foreign References:
| JP2018135552A | 2018-08-30 | |||
| JP2017119912A | 2017-07-06 | |||
| CN101993995A | 2011-03-30 | |||
| KR20180130032A | 2018-12-06 |
Attorney, Agent or Firm:
KUMASAKA Akira et al. (JP)
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