COMPOSITE ROLL Russian patent published in 2011 - IPC B21B27/03 

FIELD: technological processes.

SUBSTANCE: roll (1), in particular, a working or support one for a rolling mill, such as a plane mill, a rolling mill for manufacturing of flat billets has a cartridge (2), the left semi-journal (3) and the right semi-journal (4), at the same time the semi-journals (3, 4) in the area covered with a cartridge (2), are made in the form of a truncated cone and form the left surface (12) at the left semi-journal (3), and the right surface (13) at the right semi-journal. Prevention of shrinkage stresses formation at the roller is ensured by the fact that the left semi-journal (3) and the right semi-journal (4) are made with holes (24) and communicating slots (11), besides, slots (11) are made on the specified surfaces (12, 13). The method to manufacture a roller (1) is characterised by the fact that the left semi-journal (3) and the right semi-journal (4) are inserted into the cartridge (2), tightened to each other, at least with one tightening bolt (5), discharge oil is sent to holes (22) and slots (11) accordingly of the left semi-journal and the right semi-journal; the discharge oil acts with pressure at the cartridge (2), as a result the cartridge (2) expands; and thrust surfaces (18, 19) with the expanded cartridge (2) using a tightening bolt (5) are pressed to the end sides (20, 21) of the cartridge (2).

EFFECT: elimination of roller deformation during rolling.

12 cl, 6 dwg