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Scrap Retention Reverse Taper Button Dies -Straight Type-



In recent years, more and more high-tension materials with high pulling capacity are undergoing the punching process as a part of weight reduction activities. Generally, in high tensile materials the compression amount of the scrap is large whereas the length of the cross section shortens. Thus there has been a rise in cases where the existing countermeasures are failing to control the scrap lifting.

Reverse taper die has been developed where the taper is provided inside the die considering the compression amount of the scrap. By providing a very small taper, even the compressed slug produces friction with the die which proves effective against scrap lifting.


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