Press Forming of Porous Sintered Metal Fiber Sheets

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  • 多孔質金属繊維焼結板のプレス加工
  • タコウシツ キンゾク センイ ショウケツバン ノ プレス カコウ

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Abstract

In this paper, we discuss the possibilities of burr-free blanking and deep drawing of sintered metal fiber sheets. In the blanking, the experimental results showed that a conventional blanking technique can reduce the height of the burr under the conditions of small tool clearance. However, there is still small burr. Then, the authors proposed a new method that can realize burr-free blanking of the sheet. The method proved to be effective also for the dimensionally accurate blanking of the sheet. In the deep drawing, it was found that a technique using a die with a fixed blank holder can realize high-aspect-ratio drawing of the sheet. Moreover, with the use of the holder, a deep-drawn product with no defect like folds can be produced consistently by making the gap between the blank-holding plate and die nearly equal to the thickness of the sheet to be drawn.

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