METHOD OF ROLLING METAL STRIPS AND DEVICE FOR ITS EMBODIMENT Russian patent published in 1999 - IPC

FIELD: methods and devices for rolling metal strips in hot-rolling strip mill or in reversing rolling stand. SUBSTANCE: hot rolling mill has at least two rolling stands with horizontally adjustable top and bottom working rolls. Each roll rests directly or through intermediate roll on backup roll. In the course of deformation, state of rolled strip is regulated. The strip is acted upon by two groups of actuating members, shaping and planeness imparting ones. Desired contour of strip profile is preset. To attain the contour, the actuating members of the first group are engaged in cases when the thickness of rolled strip exceeds the critical one with respect to change of metal flow region. The actuating members of the first group act mainly on strip contour in its middle region. The actuating members of the second group are engaged when strip thickness is less than said critical value. The actuating members of the second group act on contour of strip in its edge region. EFFECT: realization of flexible programs of rolling with observation of requirements for accuracy of profile and planeness of rolled strip. 14 cl, 8 dwg