| 摘要 |
PROBLEM TO BE SOLVED: To provide a mixed powder for powder metallurgy which enables acquisition of a sintered body combining excellent lathe machinability and excellent drill machinability.SOLUTION: A mixed powder for powder metallurgy contains a powder for machinability improvement which contains at least one selected from enstatite powder, talc powder, kaolin powder, mica powder, magnesium oxide(MgO) powder, {silica(SiO)+magnesium oxide(MgO)} mixed powder, alkali silicate powders, alkali metal sulfate powders and alkaline earth sulfate powders and an oxide powder containing CaO, AlOand SiO, and the blend ratio of the powder for machinability improvement is 0.01-1.0 mass% in the total amount of the mixed powder for powder metallurgy excluding lubricants. |
