Title:
HOT ROLLED STEEL SHEET COOLING DEVICE AND COOLING METHOD
Document Type and Number:
Japanese Patent JP2021062386
Kind Code:
A
Abstract:
To provide a hot rolled steel sheet cooling device which can be used between conveyance rolls on an undersurface of a hot rolled steel sheet after finish rolling in a hot rolling process, has a compact and simple structure, and can perform uniform cooling in a steel sheet width direction, and a cooling method.SOLUTION: A cooling device, which cools an undersurface of a hot rolled steel sheet 2 conveyed on a run-out table, comprises: at least one cooling water nozzle 21 which is provided between adjacent conveyance rolls 18, and injects cooling water to the undersurface of the hot rolled steel sheet 2; and a cooling water stream control mechanism 30 which controls stream of cooling water injected from the cooling water nozzle 21. The cooling water stream control mechanism 30 has a rotor 31 which extends in a width direction of the run-out table, and is rotatably provided with a rolling width direction as an axis; an opening 31a and a blocking part 31b which are provided on a peripheral surface of the rotor 31. The cooling water stream control mechanism 30 controls collision and non-collision of cooling water with the hot rolled steel sheet 2 by the cooling water nozzle 21 by rotational drive of the rotor 31.SELECTED DRAWING: Figure 2
Inventors:
DAIMON YASUHIKO
SERIZAWA YOSHIHIRO
SERIZAWA YOSHIHIRO
Application Number:
JP2019187331A
Publication Date:
April 22, 2021
Filing Date:
October 11, 2019
Export Citation:
Assignee:
NIPPON STEEL CORP
International Classes:
B21B45/02
Domestic Patent References:
| JPS5617115A | 1981-02-18 | |||
| JPS591414U | 1984-01-07 | |||
| JPS59171808U | 1984-11-16 | |||
| JP2015160240A | 2015-09-07 | |||
| JPS5554208A | 1980-04-21 |
Attorney, Agent or Firm:
Tetsuo Kanamoto
Koji Hagiwara
Naoki Ogita
Takashi Saito
Takuya Mine
Koji Hagiwara
Naoki Ogita
Takashi Saito
Takuya Mine