Abstract
An amorphous foil has been blanked by a new blanking method, in which a plastic material is used instead of a punch. The plastic is compressed dynamically by electromagnetic transient pressure so as to bulge into the die, the amorphous foil between the plastic and the die being blanked by the die edge. Blanking conditions and their optimization are investigated using such plastics as polycarbonate (PC), nylon 11 (NY) and polypropylene (PP). Punchless micro-blanking is attempted also, the blanking of holes of 0.1 mm diameter being achieved. Experimental results show that the method is suitable for small volume production and fine processing.
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