| 摘要 |
An abrasion-resistant cast iron material having a chemical composition comprising in wt. %: 1.0-3.0% of C, 0.1-2.0% of Si, 0.1-2.0% of Mn, 3.0-10.0% of Cr, 0.1-9.0% of Mo, 1.5-10.0% of W, one or both of V and Nb in a combined amount of 3.0-10.0%, and Fe in a substantial amount. The invention also provides a composite roll which comprises an outer layer made of the abrasion-resistant cast iron material, and an inner layer made of flaky graphite cast iron, spheroidal graphite cast iron or spheroical graphite cast steel. <IMAGE> |
