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Title:
METHOD OF CONTROLLING COOLING IN HOT ROLLING AND METHOD OF MANUFACTURING HOT-ROLLED METAL STRIP
Document Type and Number:
Japanese Patent JP2009208123
Kind Code:
A
Abstract:

To provide a method of controlling cooling by which temperature just before coiling of a hot-rolled metal strip of a product is brought near to a desired value as much as possible when cooling a material to be rolled by using cooling water before coiling as the hot-rolled metal strip after hot-rolling a metal material (material to be rolled) and a method of manufacturing the hot-rolled metal strip using the same.

By providing a flow meter 265 on every control unit (262 or 261) for injecting cooling water w from cooling equipment 26, measuring the flow of the cooling water w which is injected actually in every cooling unit (262 or 261), the number of the control units (262 or 261) for injecting the cooling water w is adjusted so as to reduce the difference of temperature between the temperature of the material to be rolled (hot-rolled metal strip) 8 just before coiling and the target temperature of the metal to be rolled (hot-rolled metal strip) 8 just before coiling, which is predicted from the difference between the measured flow and target flow.


Inventors:
YAMAMOTO ATSUSHI
OKAZAKI SHINJI
MATSUURA MITSUTAKA
Application Number:
JP2008054287A
Publication Date:
September 17, 2009
Filing Date:
March 05, 2008
Export Citation:
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Assignee:
JFE STEEL CORP
International Classes:
B21B45/02; B21B37/76
Domestic Patent References:
JPH0890036A1996-04-09
JPH06179010A1994-06-28
JP2004130353A2004-04-30
JPS62109807U1987-07-13
JPH0890036A1996-04-09
JPH06179010A1994-06-28
Attorney, Agent or Firm:
Kenichiro Ochiai
Kazuhiro Mori