GROOVED PASS SYSTEM OF ROLLING MILL ROLLS Russian patent published in 2005 - IPC

FIELD: rolled stock production, namely roll grooved passes for triple rolling at slitting rolled piece in line of rolling mill, mainly in reversing cogging mills, billet and large-bar rolling mills.

SUBSTANCE: system includes rough, intermediate and finish three-groove passes cut in rolling rolls. Rough three-groove pass is in the form of triple ovals cut in roll along their large axes. Intermediate three-groove pass is in the form of triple rhombs cut in rolls along their large diagonals. Finish three-groove pass is in the form of triple diagonal squares. Relation of width of finish pass to width of intermediate pass is in range 1.05 - 1.10. Relation of width of rough, intermediate and finish passes to width of central groove is normalized.

EFFECT: lowered wear of members of rolled grooved passes for rolling triple piece, less loss of yield due to prevention of cracking caused by temperature stresses on surface of rolled piece, reliable slitting and high accuracy of geometry of blank cross sections.

1 dwg