CAST IRON Russian patent published in 1999 - IPC

FIELD: metallurgy. SUBSTANCE: proposed cast iron has components at the following ratio, wt.-%: carbon 2.5-2.9; silicon 2.2-8.2; manganese 0.47-0.9; zirconium 0.2-6.17; phosphorus 0.1-0.15; sulfur 0.02-0.05; chrome 0-0.13; nickel 0-0.14, and iron - the rest. Addition of zirconium provides the graphite grinding and its improved uniform distribution in perlite. Invention is used in production of cast iron used under conditions of friction with lubrication at high dynamic loading. EFFECT: improved quality and properties of cast iron. 1 tbl, 1 dwg, 3 ex