Deep drawing safety according to Engelhardt
5.2.6
Eqn. 1
| Deep drawing safety | T | = | % |
| Tearing force | FBR | = | kN | |||
| Maximum drawing force | FZ max | = | kN |
Calc 1
Deep drawing safety
Fig. 1
Determination of deep drawing safety
① Deep drawing ② Depths FZB Tearing force Fz max maximum drawing force h Drawing height hmax maximum drawing height T Deep drawing safety
The deep drawing safety according to Engelhardt is a test method. First, a sheet metal cup is pulled beyond the maximum drawing force. Then the rest of the flange is clamped in and the cup is formed down to the cup base fracture. The deep drawing safety results from the difference between the tearing force and the maximum drawing force.16
16
Ostermann, F. / Anwendungstechnologie Aluminium / Springer / Berlin / 1998 / …