CAST IRON Russian patent published in 2007 - IPC C22C37/10 

FIELD: ferrous metallurgy.

SUBSTANCE: the present innovation deals with the composition of chromous cast iron and manufacturing the rollers. The cast iron in question contains the components in the following ratio, weight%: carbon 3.5-4.0; silicon 0.8-1.2; manganese 1.0-2.0; chromium 9.0-11.0; nickel 0.3-0.8; titanium 0.05-0.15; cobalt 1.0-2.0; nitrogen 0.01-0.03; hafnium 4.0-5.0; iron - the rest. The innovation provides increased resistance to twisting at increased temperatures.

EFFECT: increased resistance to twisting.

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