| abstract |
Disclosed are alloy cast iron, and a method of manufacturing a rolling piston for a rotary compressor using the same. The alloy cast iron consists of, by weight, 3.0 ~ 3.5% carbon (C), 2.2 ~ 2.4% silicone (Si), 0.5 ~ 1.0% manganese (Mn), 0.1 ~ 0.3% phosphorus (P), 0.06 ~ 0.08% sulfur (S), 0.7 ~ 1.0% chrome (Cr), 0.6 ~ 1.0% copper (Cu), and a residue formed of Fe and inevitable impurities, wherein 3 ~ 8% steadite structure is formed by volume. |