| 摘要 |
<p>A process for producing a powder part involves the step of compacting a powder metal composition substantially comprising 1.0 - 2.5% Ni, 0.3 - 0.7% Mo, 0.15 - 0.30% Mn, 0.3 - 0.7% C, and 0.5 - 1.0% zinc stearate, the balance being Fe; and is characterised in that the composition additionally comprises substantially 0.5 to 1.5% Cu and in that the compressed part is sintered at a temperature ranging from about 2000 DEG F (1093 DEG C) to about 2150 DEG F (1177 DEG C) for about 15 to about 30 minutes in a furnace having a dew point ranging from about 20 DEG F (-6.7 DEG C) to about 61 DEG F (16 DEG C) and under an endothermic atmosphere.</p> |
