3. Forming processes and technology

3.1 Stamping

SCROLL TO TOP

3.1.1 Stamping with blank holder

Blank-holder stamping is mainly used to manufacture dished ends. It is cold-formed for thicknesses up to 10 mm, and hot-formed for thicknesses over 10 mm.

Deep-drawing large-diameter dished ends differs significantly from deep-drawing cylindrical parts. When deep-drawing dished ends, there is a risk of wrinkles or dents appearing in the annular zone that is not in contact with the tooling. In this zone, the metal is subjected to tangential compressive...