| 摘要 |
Disclosed are a part for a power generating facility and a manufacturing method thereof. The part for a power generating facility according to the present invention comprises the steps of: inputting, into a mold, and solidifying molten metal composed of 0.16-0.18 wt% of carbon (C), 0.3-0.4 wt% of silicon (Si), 0.6-0.8 wt% of manganese (Mn), 0.001-0.015 wt% of phosphorus (P), 0.001-0.008 wt% of sulfur (S), 0.001-0.035 wt% of aluminum (Al), 0.55-0.75 wt% of nickel (Ni), 1.35-1.45 wt% of chromium (Cr), 0.95-1.05 wt% of molybdenum (Mo), 0.2-0.3 wt% of vanadium (V), the remainder consisting of iron (Fe), and inevitable impurities; normalizing the solidified output at temperatures equal to or higher than Ac3; cooling the normalized output; and tempering the normalized output, wherein the cooling is conducted at an average cooling speed of 0.25-0.40°C/sec. |
