C - Chemistry – Metallurgy – 22 – C
Patent
C - Chemistry, Metallurgy
22
C
80/37
C22C 21/00 (2006.01) B21B 37/28 (2006.01)
Patent
CA 1038662
ABSTRACT OF THE DISCLOSURE A method is disclosed for controlling the flatness of a metal sheet in rolling through rolling mill rolls. It involves the use of a flatness controller which comprises several rollers with a barrel length shorter than the width of the sheet. The flatness controller is arranged downstream of the mill rolls. The tension distribution in the sheet during rolling of the sheet through the rolling mill rolls in the width direction is changed by vertically moving some or all of the rollers forming the flatness controller and thereby giving vertical displacement to the corresponding part of the sheet during rolling. This thereby increases the draft in that part of the sheet during rolling. In order effectively to change the tension distribution, an auxiliary roller is arranged, if necessary, downstream of the mill rolls and at a location more distant from the mill rolls than the flatness controller rollers.
232697
Arimura Toru
Fujita Fumio
Na
Nippon Kokan Kabushiki Kaisha
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