| 摘要 |
<p>PURPOSE: An alloy cast iron and a method for manufacturing a rolling piston of a rotary using the same are provided to reduce manufacturing cost with enough mechanical properties by removing or minimizing the content of expensive Ni, Cr, Mo, and others. CONSTITUTION: An alloy cast iron is composed of 3.0-3.5 wt.% of C, 2.2-2.4 wt.% of Si, 0.5-1.0 wt.% of Mn, 0.1-0.3 wt.% of P, 0.06-0.08 wt.% of S, 0.7-1.0 wt.% of Cr, 0.6-1.0 wt.% of Cu, and the rest of Fe and inevitable impurities. The alloy cast iron includes 3-8% of stenadite in volume ratio. The alloy cast iron is heat-treated by quenching and tempering.</p> |
