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Patent Searching and Data


Title:
ROLLING OF METAL STRIP
Document Type and Number:
WIPO Patent Application WO/2011/122070
Kind Code:
A1
Abstract:
Disclosed is a method for rolling in a rolling mill which has a bending decreasing device with a responsivity lower than that of a bending increasing device, the method intended for realizing a quick-response strip crown and shape control function even under a setting condition in which roll bending decreasing force is applied. To solve the aforementioned challenge, the method is executed as follows. Before starting rolling, both bending increasing force and bending decreasing force are applied to allow the resultant force, or roll bending force equivalent to roll balance force, to act upon a work roll chock. At the start of rolling, the bending increasing force is varied with the bending decreasing force kept at a constant value, allowing the resultant force or predetermined roll bending force (bending decreasing force) to act on the work roll chock for rolling. At the end of the rolling, the bending increasing force is reset to the pre-rolling value, and as the resultant force with the bending decreasing force, the roll bending force equivalent to the roll balance force is exerted on the work roll chock, allowing the rolling to end under this condition.

Inventors:
OGAWA SHIGERU (JP)
HIGO TSUYOSHI (JP)
WAKATSUKI KUNIHIKO (JP)
Application Number:
PCT/JP2011/050785
Publication Date:
October 06, 2011
Filing Date:
January 12, 2011
Export Citation:
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Assignee:
NIPPON STEEL CORP (JP)
OGAWA SHIGERU (JP)
HIGO TSUYOSHI (JP)
WAKATSUKI KUNIHIKO (JP)
International Classes:
B21B37/38; B21B13/14; B21B29/00
Foreign References:
JPS63199006A1988-08-17
JPH11267728A1999-10-05
JPS62142403U1987-09-08
JPH02280910A1990-11-16
JPH08215730A1996-08-27
JPH0655207A1994-03-01
JPH08215730A1996-08-27
Other References:
See also references of EP 2554284A4
Attorney, Agent or Firm:
AOKI, Atsushi et al. (JP)
Aoki 篤 (JP)
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Claims: