Centrifugally cast roll for last finishing stands in hot strip mills

摘要

The invention relates to a process for producing a centrifugally cast composite roll intended for last finishing stands in hot strip mills and its shell composition composed of (weight %); C: 2.5-4.0%, Nb: 1.1-6.0%, V: 0.7-3.0, Ni: 4.2-4.6%, Mo:0.3-1.3%, Cr: 1.5-2.2%, Si: 0.7-1.6%, Mn:0.7-1.0%, Zr: 3% or less, Ti: 3% or less, P: 0.08% or less, S: 0.08% or less and balance with Fe and unavoidable impurities and its use.