ROLLER OF SHEET MILL Russian patent published in 2008 - IPC B21B27/02 

FIELD: metallurgy.

SUBSTANCE: roller is in preference operable for hot rolling contains barrel of diameter D with external hardened case of determined thickness and hardness and inner layer. Counteraction to roller rotation by means of external layer braking, leading to destruction of roller microstructure, is excluded at the expense of that between external and internal layer of barrel it is located interlayer made of heavy-duty steel, placed in barrel at casting of roller at distance (0.050...0.035) D from its surface; hardness of interlayer is 0.95...1.05 of external surface hardness of barrel, and it is made from corrugated sheet steel, involuted as cylinder, with corrugations, which are parallel to longitudinal axis of roller, and thickness of sheet steel can be (0.0085...0.0095) D at height of semicircular corrugations, equal to (0.035...0.040) D.

EFFECT: prolongation of working run of sheet mill rollers.

2 cl, 1 dwg, 1 ex