Indefinite chill cast iron is a material between chill cast iron and grey cast iron. The working layer of this material consists of flake graphites, while the depth below the barrel surface increases, the number of graphites will increase too, but the hardness will decrease.
According to different rolling conditions, the matrix of the rolls could be controlled as perlite, bainite, martensite, or tempered sorbite by adjusting the chemical composition. The rolls of this material possess excellent wear resistance, thermal cracking resistance, spall resistance, and biting properties. ICDP rolls are primarily used in the section, wire, rod, strip mills, and the rolls of ICIV, ICV could be used in the hot strip mills, intermediate stands of tempered mills.
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