自動車焼結部品の高付価値化 粉末充填におけるすりきり時の粉末挙動

書誌事項

タイトル別名
  • Powder Behavior in Feed-shoe Movement During Powder Filling.
  • フンマツ ジュウテン ニ オケル スリキリジ ノ フンマツ キョドウ

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抄録

Dimensional tolerance of P/M parts is improved by uniformly filling powders in a die cavity. In this study, the moving behavior of the powders filled into a rectangular die cavity during the pullback or shaking of a feed-shoe has been investigated using a newly devised visual apparatus. It is clarified that the powder behavior in the feedshoe movement during powder filling is divided into three regions; where the powders move as rolling, where the powders slide, and where the powders do not slide with the movement of the feed-shoe. As the width of the cavity becomes thinner, the powders are more difficult to move; therefore, the none-sliding region increases. When shaking of the feed-shoe is repeated, the moving distance of powders in a vertical direction becomes larger, and the filling density increases. However, the increasing moving distance of powders is greatly affected by the width of the die cavity.

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