HOT ROLLING FACILITY OF STEEL PLATE AND HOT ROLLING METHOD

Title:

HOT ROLLING FACILITY OF STEEL PLATE AND HOT ROLLING METHOD

Document Type and Number:

WIPO Patent Application WO/2007/026905

Kind Code:

A1

Abstract:

Hot rolling facility and method of steel plate excellent in facility cost and maintainability of facility and having good cooling capacity which can produce a steel plate having excellent characteristics efficiently by controlling the temperature of a rolling material properly. At a position where the inlet side and the outlet side of a mill (12) are close to each other, a cooling facility (20), for supplying cooling water to the upper and lower surfaces of the steel plate (10) that is being passed, is arranged. The cooling facility (20) is provided with an upper header (21) having an upper nozzle (22) for ejecting rod-shaped cooling water (23) toward the upper surface of the steel plate (10) at an inclination angle θU=30°-60° at such a position that the stagnant cooling water (24) supplied to the upper surface of the steel plate (10) is dammed by a work roll (12a), and provided with a lower header (31) having a lower nozzle (32) for ejecting rod-shaped cooling water (33) toward the lower surface of the steel plate (10) at an angle of elevation θL=45°-90° between the work roll (12a) and a table roller (13a) adjacent thereto.

Inventors:

NAKATA NAOKI (JP)
KUROKI TAKASHI (JP)
FUJIBAYASHI AKIO (JP)
TOMITA SHOGO (JP)

Application Number:

PCT/JP2006/317394

Publication Date:

March 08, 2007

Filing Date:

August 29, 2006

Export Citation:

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Assignee:

JFE STEEL CORP (JP)
NAKATA NAOKI (JP)
KUROKI TAKASHI (JP)
FUJIBAYASHI AKIO (JP)
TOMITA SHOGO (JP)

International Classes:

B21B45/02

Foreign References:

JP2005193258A	2005-07-21
JP2002361315A	2002-12-17
JPS62260022A	1987-11-12
JP2003211205A	2003-07-29
JP2002361315A	2002-12-17
JPS62260022A	1987-11-12
JP2002079304A	2002-03-19

Other References: