| 摘要 |
According to the present invention, a spheroidal graphite cast iron alloy is additionally composed of 3.5-7 wt% of nickel (Ni), 0.5-3 wt% of copper (Cu), 0.15-1 wt% of molybdenum (Mo), 0.15-1 wt% of iron (Fe), and the rest of inevitable impurities. The present invention is applied to manufacture cowheels and gear rims. Cast parts are cooled and thermally treated in a mold. |
