解説
充填密度に及ぼす粉に与えた動きの履歴の影響と高精度粉末充填
2017 年 64 巻 2 号 p. 55-60
詳細
2017 年 64 巻 2 号 p. 55-60
The filling density in production becomes stable after it decreases rapidly in the initial stage of the consecutive compacting. Flowability fluctuation caused by history of powder movement was assumed to be one of the causes and experiments were conducted with pre-mixed powder of Fe-2 mass%Cu-0.9 mass%C-0.8 masss%Lubric ant. The experiments of this work verified that filling density is greatly affected by the history of the powder movement right before filling. Based upon the results, a highly precise filling system was developed. The new system enabled to abolish adjustment of compacting condition and to reduce defective compacts.
