FOUR-ROLL SYSTEMS FOR HOT-ROLLING FINISHING STRIP MILL STANDS

摘要

FIELD: mechanical engineering, particularly, rolling facilities. SUBSTANCE: backing-up rolls have rigidity varying in length of roll barrels, with ratio between rigidity of their terminal portions and that of central portions being 0.8 to 0.85. Length of terminal portions of roll barrels is to be selected using prescribed mathematical expression. EFFECT: durability of rolls raised by 20 to 25 %. 3 tbl