| 摘要 |
An iron-based powder for powder metallurgy, wherein: an alloying component and/or a machinability improver are adhered to the surface of an iron powder with a binder having a melting point of 150ºC or lower; carbon black is adhered to the surface of the binder; and the amount of a free binder is adjusted to 0.02 mass% or less. In this iron-based powder, the aggregation of a lubricant is inhibited. Therefore, the iron-based powder exhibits excellent fluidity, can be uniformly filled into a thin cavity for forming a thin-wall product, permits a reduction in the withdrawal force necessitated after molding, and does not cause the strength degradation of a sintered body. |
