METHOD AND DEVICE FOR COOLING STEEL SHEET AND METHOD OF MANUFACTURING STEEL SHEET

Title:

METHOD AND DEVICE FOR COOLING STEEL SHEET AND METHOD OF MANUFACTURING STEEL SHEET

Document Type and Number:

WIPO Patent Application WO/2003/097263

Kind Code:

A1

Abstract:

A method for cooling a steel sheet, comprising the steps of horizontally conveying the steel sheet while the surface thereof is being arrested by multiple sets of upper and lower rolls and water-cooling the steel sheet during conveyance from the upper and lower directions of the surface of the steel sheet, wherein a steel sheet arresting force (t) by the upper and lower rolls for each set is P1 (= 6.85 x 10^-7S³L^0.65) to less than P2 (= 1.2 x 10^-6S³L^0.65) where L (mm) is a distance between the sets of the upper and lower rolls adjacent to each other and S (mm) is the thickness of the steel sheet, whereby the hot-rolled steel sheet can be uniformly cooled without producing warpage due to nonuniform cooling and buckling by the arresting force.

Inventors:

FUJIBAYASHI AKIO
TAGANE AKIRA
UEOKA SATOSHI

Application Number:

PCT/JP2003/005933

Publication Date:

November 27, 2003

Filing Date:

May 13, 2003

Export Citation:

Click for automatic bibliography generation Help

Assignee:

JFE STEEL CORP (JP)

International Classes:

B21B45/02; C21D1/00; C21D9/46; C21D9/573; B21B15/00; B21B39/00; C21D1/667; C21D1/673; (IPC1-7): B21B45/02

Domestic Patent References:

WO2001064362A1

2001-09-07

Foreign References:

JP2000001719A	2000-01-07
JPH10263670A	1998-10-06
JPH11290933A	1999-10-26

Other References: