THICK SHEET ROLLING METHOD Russian patent published in 1998 - IPC

FIELD: rolled stock production, namely thick sheet rolling processes. SUBSTANCE: method comprises steps of heating initial blank, longitudinally rolling it between horizontal and vertical rolls of universal four-high rolling stand until receiving sheet of necessary thickness. Edge of sheet is subjected to three-dimensional compression due to arrangement of rolls in the same plane. In order to prevent burr formation on edges of rolled sheet, in zone of parting of vertical and horizontal rolls blank is preventively reduced at inclination 20% to the side. Rolling process is realized in flat pass and in three edging box passes for subsequently rolling rolled piece in one or two groups of universal and additional rolling stands. Method allows to make rolled sheets with thickness range 6-160 mm. EFFECT: enhanced quality of rolled thick sheets with edge rolled without flaws and burrs, high accuracy of sheet geometry according to given allowances, enlarged range of sheet thickness. 3 cl, 3 dwg, 8 tbl