METHOD FOR TWO-STRAND ROLLING OF REINFORCING SHAPES Russian patent published in 1999 - IPC

FIELD: rolled stock production, particularly process for rolling bar shapes in pairs and subsequently slitting rolled piece in mill line, possibly rolling bar shapes in continuous rolling mill. SUBSTANCE: method comprises steps of rolling flat plate, forming weakened section in place of subsequent separation of shapes by pressing out groove in rolled plate. Pressing out is realized at rolling plate in closed split grooved passes with restricted widening by two stages. At first stage groove is pressed out in one side of rolled plate. At second stage groove is pressed out in opposite side. Separation place is formed along weakened section in the form of bridge. Then rolled plate is separated in lengthwise direction, tilted by 90 degrees, and shapes are rolled by two strands. EFFECT: enhanced accuracy of rolling process, high quality of ready rolled piece. 1 exp, 6 dwg