MIXED POWDER FOR POWDER METALLURGY, SINTERED METAL COMPONENT USING THE SAME, AND METHOD FOR PRODUCING THE MIXED POWDER FOR POWDER METALLURGY

摘要

PROBLEM TO BE SOLVED: To provide mixed powder for powder metallurgy capable of obtaining a sintered metal component having homogeneity and high density, in which the fluidity of the mixed powder is increased for increasing powder packing properties.SOLUTION: Provided is mixed powder for powder metallurgy containing iron-based powder and carbon powder, being the powder subjected to stirring and mixing under the conditions (the number of revolution and stirring time) where fluidity reaches below 30 s/50 g after charing to a mixing machine, in which the Vickers hardness (Hv) of the iron-based powder is 100 or lower, the particle diameter of the carbon powder D90 is 4 to 10 μm, and a sintered metal component formed using the mixed powder has a density of 7.6 g/cm3 or higher.SELECTED DRAWING: Figure 3