| 摘要 |
PROBLEM TO BE SOLVED: To provide alloy steel powder mixed powder with small variation of sintering strength.SOLUTION: The alloy-steel-powder mixed powder with small variation of sintering strength is composed of iron-based mixed powder for powder metallurgy obtained by mixing an iron powder, an alloy steel powder and further a compound powder. The alloy steel powder is composed of molybdenum-based alloy steel powder. The compound powder is made of borax and/or boric acid, and the compound powder is added by 0.05 to 0.5%, by mass, against the total amount of the iron powder, the alloy steel powder and the compound powder. |
