sich verjüngen (v)

Verjüngen (Reduzieren), Pressen eines Werkstoffes durch eine sich verjüngende Matrize.

taper (v)

The rest of the tap, which is slightly tapered, serves as a guide.

Tapering (reducing), when a material is pressed through a tapered die.

Forming takes place in the area below the blank holder as far as the tapered edge of the drawing die.