CONTINUOUS ANNEALING UNIT ROLLER Russian patent published in 1997 - IPC

FIELD: metallurgy, in particular, repair and manufacture of annealing unit roller. SUBSTANCE: roller has pins provided with inner layer of austenitic stainless steel and outer layer of martensitic stainless steel. Thickness of outer layer does not exceed 0.5 of total thickness of hollow pin wall. Alloy , which may be used as material for inner layer, contains, % by weight: carbon 0.01-0.12; manganese 0.1-2.0; chromium 16.0-20.0; silicon 0.01-0.08; nickel 8.0-11.0; iron the balance. Alloy used as material for outer layer contains, % by weight: carbon 0.09-0.25; silicon 0.10-0.80; manganese 0.10-0.80; chromium 12.00-14.00; nickel 0.01-0.60; iron the balance. EFFECT: increased efficiency, simplified construction and enhanced reliability in operation. 4 cl, 1 dwg