MANUFACTURING FACILITY AND MANUFACTURING METHOD FOR THICK STEEL PLATE

Title:

MANUFACTURING FACILITY AND MANUFACTURING METHOD FOR THICK STEEL PLATE

Document Type and Number:

WIPO Patent Application WO/2021/033723

Kind Code:

A1

Abstract:

Provided are a manufacturing facility and a manufacturing method for a thick steel plate capable of precisely controlling a first-stage rapid cooling and a second-stage rapid cooling when a thick steel plate is rapidly cooled in two stages. In a manufacturing facility (1) for a thick steel plate, a cooling apparatus (3) comprises a rapid cooling area (4) having a first rapid cooling zone (5) where a thick steel plate (S) extracted from a heating furnace (2) is rapidly cooled, an air cooling zone (6) where the thick steel plate (S) is air-cooled, and a second rapid cooling zone (7) where the air-cooled thick steel plate (S) is rapidly cooled. In the rapid cooling area (4), radiation thermometers (11a) and (11b) arranged at the upper side and/or lower side of the thick steel plate (S) are installed side by side along the conveying direction of the thick steel plate (S) in at least one zone including the air cooling zone (6). The radiation thermometers (11a) and (11b) installed in the air cooling zone (6) measure the temperature of the upper surface and/or lower surface of the thick steel plate (S).

Inventors:

NOJIMA YUSUKE (JP)
UEOKA SATOSHI (JP)
TAMURA YUTA (JP)
HIRANO TAKAHIRO (JP)
MIURA KEN (JP)
KUMANO ORI (JP)

Application Number:

PCT/JP2020/031314

Publication Date:

February 25, 2021

Filing Date:

August 19, 2020

Export Citation:

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Assignee:

JFE STEEL CORP (JP)

International Classes:

C21D1/00; B21B1/38; B21B38/00; B21B45/02; B21C51/00

Domestic Patent References:

WO2011125221A1	2011-10-13
WO2019087805A1	2019-05-09

Foreign References:

JP2019119905A	2019-07-22
JP2011206793A	2011-10-20
JPS62139824A	1987-06-23
JPH11169941A	1999-06-29

Other References: