SHEET MILL QUARTO Russian patent published in 2010 - IPC B21B13/00 

FIELD: metallurgy.

SUBSTANCE: invention relates to metallurgy field, particularly to regulation of strip profile, rolled on sheet mill quarto. In sheet mill quarto, containing operating and backup rolls, interacting to each other and installed by necks in chocks, in system of counter-bending and additional bending of operating rolls, implemented in the form of hydraulic actuators of counter-bending and hydraulic actuators of additional bending, located with ability of interaction with chocks of rolls and connected to its hydraulic actuators and oil box, diametre of hydraulic actuators of additional bending is defined by formula d = (9…12)D:(np)^0.5 where d - diametre of hydraulic actuators, mm, D - work roll diametre, mm, n - general number of hydraulic actuators of additional bending in both chocks of working roll, p - pressure of oil in hydraulic actuators of additional bending of working roll, kilogram-force/cm², herewith hydraulic actuators of additional bending are located with ability of interaction to chocks of top operating and backup rolls.

EFFECT: there is provided rising of performance of system of additional bending of rolls and design simplification of stand.

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