DEVICE AND METHOD FOR COOLING HOT-ROLLED STEEL SHEET

DEVICE AND METHOD FOR COOLING HOT-ROLLED STEEL SHEET

To make the temperature of a hot rolled steel sheet more uniform in the rolling direction and the sheet width direction by properly cooling the undersurface of the hot rolled steel sheet after finish rolling in a hot rolling step, a cooling device cooling an undersurface of a hot rolled steel sheet...

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Hauptverfasser: TANAKA, Koki, HONDA, Tatsuro, SERIZAWA, Yoshihiro, TACHIBANA, Hisayoshi, NAKAGAWA, Susumu, ISHITSUKA, Shota, HARAGUCHI, Yohichi
Format: Patent
Sprache:eng ; fre ; ger
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MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL
PERFORMING OPERATIONS
PUNCHING METAL
ROLLING OF METAL
TRANSPORTING
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creator TANAKA, Koki
HONDA, Tatsuro
SERIZAWA, Yoshihiro
TACHIBANA, Hisayoshi
NAKAGAWA, Susumu
ISHITSUKA, Shota
HARAGUCHI, Yohichi
description To make the temperature of a hot rolled steel sheet more uniform in the rolling direction and the sheet width direction by properly cooling the undersurface of the hot rolled steel sheet after finish rolling in a hot rolling step, a cooling device cooling an undersurface of a hot rolled steel sheet that is being transported on transport rolls after finish rolling of a hot rolling step includes: width divided cooling zones that are a plurality of cooling zones into which a whole cooling zone is divided in a sheet width direction, the whole cooling zone being a cooling zone partitioned by all of a width of an undersurface of a sheet transport zone in the sheet width direction and a predetermined length of the undersurface of the sheet transport zone in a rolling direction; divided cooling sections that are a plurality of cooling zones into which each of the width divided cooling zones is divided in the rolling direction; at least one cooling water nozzle spraying cooling water over each of undersurfaces of the divided cooling sections; a switching mechanism switching the cooling water sprayed from the cooling water nozzle between impinging and not impinging on the divided cooling sections; a width direction thermometer measuring a temperature distribution in the sheet width direction; and a controller controlling operation of the switching mechanism based on a result of measurement with the width direction thermometer.
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subjects MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL
PERFORMING OPERATIONS
PUNCHING METAL
ROLLING OF METAL
TRANSPORTING
title DEVICE AND METHOD FOR COOLING HOT-ROLLED STEEL SHEET
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