Pearlitic rolls are composed by nodular graphite and carbides arranged in a pearlitic matrix. It's properties are similar to Indefinite Chill except that the graphite structure is changed from flake to spheroidal forms. Pearlitic rolls will have higher strength than Indefinite Chill. Pearlitic roll can be produced by static casting (Monoblock) or by using the centrifugal cast (CC) Double-pour method.
Acicular roll, alloyed with the nickel, manganese and chromium with a bainitic-acicular-martensitic matrix has a higher UTS, hardness and wear resistance is more than the SGP quality. Semi-continuous carbides maintain the wear resistance, while at the same time exhibiting high strength and resistance to fire-cracks. The extensive heat treatment procedure ensures an acicular matrix. Acicular roll can be produced by static casting (Monoblock) or by using the centrifugal cast (CC) Double-pour method.
Graphite steel rolls are composed mainly of pearlite with spherical graphite and some carbide. Graphite steel rolls are stronger than cast iron rolls and harder than other steel rolls. The feature of graphite rolls that is better resistance to fire crack and scale adhesion.
Adamite rolls and rings are performance steel rolls with an optimum combination of wear and fire-crack resistance. This quality has a short range of carbon content, plus varying quantities of Nickel, Chromium and Molybdenum to achieve higher hardness levels. It can be produced either by the Static Monoblock conventional method, or by the horizontal Centrifugal Cast method.
