COOLING SYSTEM FOR HOT-ROLLED STEEL STRIP - MITSUBISHI HITACHI METALS

Title:

COOLING SYSTEM FOR HOT-ROLLED STEEL STRIP

Document Type and Number:

WIPO Patent Application WO/2012/039270

Kind Code:

A1

Abstract:

Provided is a cooling system for a hot-rolled steel strip capable of increasing the cooling rate for rapidly cooling a rolled steel immediately after rolling and suitable for an apparatus for manufacturing a hot-rolled steel strip having a fine-grained structure. For this purpose, guides (16A, 16B) having guiding surfaces (16a, 16b) to guide a rolled steel (W) exiting work rolls (12A, 12B) in the conveyance direction are provided at exits of the work rolls in a final stand (Sn) of a finish rolling mill line in a manner that the guides can follow a change in the diameter of the work rolls, a number of injection holes (21A, 21B) are formed in the guides, and a number of rolled steel cooling nozzles (23A, 23B) are provided to spray a large amount of cooling water through the injection holes directly onto the rolled steel.

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Inventors:

MATSUMOTO KOICHI (JP)
IKEMOTO YUJI (JP)
HARAGUCHI YOICHI (JP)
KOBAYASHI KAZUAKI (JP)

Application Number:

PCT/JP2011/070107

Publication Date:

March 29, 2012

Filing Date:

September 05, 2011

Export Citation:

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Assignee:

MITSUBISHI HITACHI METALS (JP)
SUMITOMO METAL IND (JP)
MATSUMOTO KOICHI (JP)
IKEMOTO YUJI (JP)
HARAGUCHI YOICHI (JP)
KOBAYASHI KAZUAKI (JP)

International Classes:

B21B45/02; B21B13/14; B21B27/10; B21B39/14; B21B39/16

Foreign References:

JPS6241404U	1987-03-12
JPH0460304U	1992-05-25
JP2009526653A	2009-07-23
JPH08323405A	1996-12-10
JP2005342767A	2005-12-15
JPS6043434A	1985-03-08
JP2005193258A	2005-07-21
JPS627247B2	1987-02-16
JP2002273501A	2002-09-25

Other References: