CROWN ROLLER CONTROLLING PROFILE AND ROLLED STRIP FLATNESS Russian patent published in 2010 - IPC B21B13/14 

FIELD: metallurgy.

SUBSTANCE: invention refers to pressure metal processing, particularly to shape of mill frame rollers for strip manufacturing. Mill frame for rolled strip (1) manufacturing includes work rollers (10, 11) supported by bearing rollers (30, 31) or by intermediate rollers (20, 21) and bearing rollers (30, 31), if required. Work rollers (10, 11) and/or intermediate rollers (20, 21) and/or bearing rollers (30, 31) can perform axial movement. Body length (L) of each intermediate roller (20, 21) in six-roller frame or of each work roller in four-roller frame is comprised by cylindrical body section (Z) and curved convex body section R(x). Transition point (A) between cylindrical and curved sections is set within L/2<=x<L distance from cylindrical body section end. Curved contour running along a part of roller length in direction of body end and on respectively opposite sides of both rollers (20, 21) is described by polynomial formula R(x)=a₀+…a_nxⁿ, where n>=5.

EFFECT: homogeneous change of effort applied to rolls from metal side, resulting in prolonged service life of crown rollers.

8 cl, 8 dwg