ROLLER OF MACHINE FOR CONTINUOUS CASTING OF BILLETS Russian patent published in 2000 - IPC

FIELD: metallurgy. SUBSTANCE: longitudinal protrusions in the form of dovetail are made with same spacing in rings of sleeve put on barrel of roller. They form grooves. Two trapezoidal inserts produced from wear-resistant material are placed in each groove. External side faces of inserts contact corresponding side faces of longitudinal protrusion and their internal side faces contact spacing member put between them. Spacing member is fabricated in the form of truncated cone with wedge-shaped angle equal to angle between internal side faces of inserts. Spacing member is rigidly fixed in body of sleeve against radial displacement. Rings of sleeve are put on barrel of roller from side of thrust journal with displacement by angle of 18-20 degrees one relative to another. Length of shrouded section of roller amounts to 0.30-0.35 length of its barrel. Invention makes it possible to increase wear resistance of rollers by factor of 1.6-1.8 and to improve their maintainability. EFFECT: increased wear resistance and improved maintainability of rollers. 1 cl, 6 dwg, 1 tbl